Station Overview Station Location
Station Number MD-MG-103 Latitude 39.152565
Station Name Dickerson 6.6 SW Longitude -77.510361
County Montgomery Elevation (ft) 228



Month 30 Yr Avg by PRISM Total Prcp Sum Days Covered By All Observations Daily Prcp Sum Daily Observation Count Multiday Prcp Sum Days Covered by Multiday Observations Multiday Observation Count Days With Prcp Days With Trace Total Snowfall Days With Snowfall Days With Snow On Ground
Oct 16 3.19 0.94 30 0.94 30 0.00 0 0 7 1 0.0 0 0
Nov 16 3.40 0.90 30 0.90 28 0.00 2 1 8 0 0.0 0 0
Dec 16 2.94 3.47 30 3.47 30 0.00 0 0 12 2 0.0 0 0
Jan 17 2.58 2.99 30 2.99 27 0.00 3 1 13 5 0.3 1 1
Feb 17 2.53 0.37 28 0.37 26 0.00 2 1 4 3 0.0 0 0
March 17 3.52 4.29 31 4.29 31 0.00 0 0 18 3 4.0 2 3
April 17 3.32 4.89 30 4.89 30 0.00 0 0 19 1 0.0 0 0
May 17 4.46 6.24 31 6.24 31 0.00 0 0 21 1 0.0 0 0
June 17 3.77 2.39 30 2.38 28 0.01 2 1 6 1 0.0 0 0
July 17 3.65 9.04 31 9.04 31 0.00 0 0 9 4 0.0 0 0
Aug 17 3.22 5.30 31 5.30 29 0.00 2 1 15 0 0.0 0 0
Sept 17 3.89 3.62 29 3.62 29 0.00 0 0 7 1 0.0 0 0
Water Year Totals: 40.47" 44.44" 361 days 44.43" 350 0.01" 11 days 5 139 days 22 days 4.3" 3 days 4 days



Days in Water Year Cell Color Key
        Daily Observation with Prcp         Missing Day
        Multiday Observation         Daily/Multiday Observation Conflict

Day of Year Daily Prcp Multiday Prcp
10/1/2016 0.31
10/2/2016 0.10
10/3/2016
10/4/2016 0.00
10/5/2016 0.00
10/6/2016 0.00
10/7/2016 0.00
10/8/2016 0.20
10/9/2016 0.11
10/10/2016 0.00
10/11/2016 0.00
10/12/2016 0.00
10/13/2016 0.00
10/14/2016 0.00
10/15/2016 0.00
10/16/2016 0.00
10/17/2016 0.00
10/18/2016 0.00
10/19/2016 0.00
10/20/2016 0.00
10/21/2016 0.00
10/22/2016 0.14
10/23/2016 T
10/24/2016 0.00
10/25/2016 0.00
10/26/2016 0.00
10/27/2016 0.00
10/28/2016 0.03
10/29/2016 0.00
10/30/2016 0.00
10/31/2016 0.05
11/1/2016 0.00
11/2/2016 0.00
11/3/2016 0.02
11/4/2016 0.00
11/5/2016 0.00
11/6/2016 0.00
11/7/2016 0.00
11/8/2016 0.00
11/9/2016 0.15
11/10/2016 0.07
11/11/2016 0.00
11/12/2016 0.00
11/13/2016 0.00
11/14/2016 0.00
11/15/2016 0.05
11/16/2016 0.00
11/17/2016 **
11/18/2016 0.00
11/19/2016 0.00
11/20/2016 0.04
11/21/2016 0.00
11/22/2016 0.00
11/23/2016 0.00
11/24/2016 0.01
11/25/2016 0.00
11/26/2016 0.00
11/27/2016 0.00
11/28/2016 0.00
11/29/2016 0.04
11/30/2016 0.52
12/1/2016 1.23
12/2/2016 0.00
12/3/2016 0.00
12/4/2016 0.00
12/5/2016 0.26
12/6/2016 0.01
12/7/2016 0.89
12/8/2016
12/9/2016 0.00
12/10/2016 0.00
12/11/2016 T
12/12/2016 0.14
12/13/2016 0.00
12/14/2016 0.00
12/15/2016 0.00
12/16/2016 0.00
12/17/2016 0.20
12/18/2016 0.02
12/19/2016 0.00
12/20/2016 0.00
12/21/2016 0.00
12/22/2016 0.00
12/23/2016 0.00
12/24/2016 0.47
12/25/2016 0.03
12/26/2016 0.00
12/27/2016 0.01
12/28/2016 0.00
12/29/2016 0.19
12/30/2016 0.02
12/31/2016 T
Day of YearDaily PrcpMultiday Prcp
1/1/2017 0.00
1/2/2017 0.23
1/3/2017 0.35
1/4/2017 0.75
1/5/2017 0.00
1/6/2017 T
1/7/2017 M
1/8/2017 0.00
1/9/2017 0.00
1/10/2017 0.00
1/11/2017 T
1/12/2017 0.13
1/13/2017 0.00
1/14/2017 0.00
1/15/2017 0.25
1/16/2017 0.00
1/17/2017 0.02
1/18/2017 0.17
1/19/2017 0.01
1/20/2017 0.00
1/21/2017 0.03
1/22/2017 0.01
1/23/2017 0.11
1/24/2017 0.92
1/25/2017 0.01
1/26/2017 T
1/27/2017 **
1/28/2017 **
1/29/2017 0.00
1/30/2017 T
1/31/2017 T
2/1/2017 0.00
2/2/2017 0.00
2/3/2017 0.00
2/4/2017 **
2/5/2017 0.00
2/6/2017 0.00
2/7/2017 0.00
2/8/2017 T
2/9/2017 0.23
2/10/2017 0.02
2/11/2017 0.00
2/12/2017 T
2/13/2017 0.10
2/14/2017 0.00
2/15/2017 0.00
2/16/2017 0.00
2/17/2017 T
2/18/2017 0.00
2/19/2017 0.02
2/20/2017 0.00
2/21/2017 0.00
2/22/2017 0.00
2/23/2017 0.00
2/24/2017 0.00
2/25/2017 0.00
2/26/2017 0.00
2/27/2017 0.00
2/28/2017 0.00
3/1/2017 0.45
3/2/2017 0.00
3/3/2017 0.02
3/4/2017 T
3/5/2017 0.00
3/6/2017 0.00
3/7/2017 0.03
3/8/2017 0.16
3/9/2017 0.01
3/10/2017 0.11
3/11/2017 0.07
3/12/2017 0.00
3/13/2017 0.00
3/14/2017 1.64
3/15/2017 T
3/16/2017 0.00
3/17/2017 0.00
3/18/2017 0.02
3/19/2017 0.43
3/20/2017 0.02
3/21/2017 T
3/22/2017 0.00
3/23/2017 0.00
3/24/2017 0.00
3/25/2017 0.22
3/26/2017 0.01
3/27/2017 0.05
3/28/2017 0.02
3/29/2017 0.72
3/30/2017 0.01
3/31/2017 0.30
Day of YearDaily PrcpMultiday Prcp
4/1/2017 1.41
4/2/2017 0.01
4/3/2017 0.00
4/4/2017 0.08
4/5/2017 0.00
4/6/2017 0.02
4/7/2017 0.99
4/8/2017 0.01
4/9/2017 0.00
4/10/2017 0.00
4/11/2017 0.00
4/12/2017 0.00
4/13/2017 0.03
4/14/2017 0.00
4/15/2017 0.00
4/16/2017 0.05
4/17/2017 T
4/18/2017 0.16
4/19/2017 0.03
4/20/2017 0.10
4/21/2017 0.42
4/22/2017 0.56
4/23/2017 0.43
4/24/2017 0.06
4/25/2017 0.30
4/26/2017 0.20
4/27/2017 0.02
4/28/2017 0.00
4/29/2017 0.01
4/30/2017 0.00
5/1/2017 0.22
5/2/2017 0.02
5/3/2017 0.00
5/4/2017 0.00
5/5/2017 0.98
5/6/2017 0.43
5/7/2017 0.12
5/8/2017 0.02
5/9/2017 0.00
5/10/2017 0.00
5/11/2017 0.14
5/12/2017 0.96
5/13/2017 0.51
5/14/2017 0.02
5/15/2017 0.00
5/16/2017 0.00
5/17/2017 0.00
5/18/2017 0.00
5/19/2017 0.08
5/20/2017 0.32
5/21/2017 0.00
5/22/2017 0.21
5/23/2017 0.03
5/24/2017 0.32
5/25/2017 1.17
5/26/2017 0.40
5/27/2017 T
5/28/2017 0.12
5/29/2017 0.03
5/30/2017 0.01
5/31/2017 0.13
6/1/2017 **
6/2/2017 0.01
6/3/2017 0.00
6/4/2017 0.00
6/5/2017 0.00
6/6/2017 0.13
6/7/2017 0.00
6/8/2017 0.03
6/9/2017 0.00
6/10/2017 0.00
6/11/2017 0.00
6/12/2017 0.00
6/13/2017 0.00
6/14/2017 0.00
6/15/2017 0.00
6/16/2017 0.00
6/17/2017 0.01
6/18/2017 T
6/19/2017 0.00
6/20/2017 1.85
6/21/2017 0.00
6/22/2017 0.00
6/23/2017 0.08
6/24/2017 0.28
6/25/2017 0.00
6/26/2017 0.00
6/27/2017 0.00
6/28/2017 0.00
6/29/2017 0.00
6/30/2017 0.00
Day of YearDaily PrcpMultiday Prcp
7/1/2017 T
7/2/2017 0.20
7/3/2017 0.00
7/4/2017 0.00
7/5/2017 T
7/6/2017 1.02
7/7/2017 0.70
7/8/2017 0.05
7/9/2017 0.00
7/10/2017 0.00
7/11/2017 0.00
7/12/2017 T
7/13/2017 T
7/14/2017 0.00
7/15/2017 1.20
7/16/2017 0.00
7/17/2017 0.00
7/18/2017 0.00
7/19/2017 0.00
7/20/2017 0.00
7/21/2017 0.00
7/22/2017 0.00
7/23/2017 0.57
7/24/2017 0.51
7/25/2017 0.00
7/26/2017 0.00
7/27/2017 0.00
7/28/2017 0.00
7/29/2017 4.67
7/30/2017 0.12
7/31/2017 0.00
8/1/2017 0.00
8/2/2017 0.00
8/3/2017 0.00
8/4/2017 0.09
8/5/2017 0.13
8/6/2017 0.00
8/7/2017 0.04
8/8/2017 0.25
8/9/2017 0.00
8/10/2017 0.00
8/11/2017 0.00
8/12/2017 1.60
8/13/2017 0.53
8/14/2017 0.00
8/15/2017 0.04
8/16/2017 0.10
8/17/2017 0.00
8/18/2017 0.02
8/19/2017 1.54
8/20/2017 0.20
8/21/2017 **
8/22/2017 0.00
8/23/2017 0.09
8/24/2017 0.00
8/25/2017 0.07
8/26/2017 0.00
8/27/2017 0.00
8/28/2017 0.00
8/29/2017 0.12
8/30/2017 0.48
8/31/2017 0.00
9/1/2017 0.04
9/2/2017 0.09
9/3/2017 0.25
9/4/2017 0.00
9/5/2017 0.00
9/6/2017 2.42
9/7/2017 0.67
9/8/2017 0.00
9/9/2017 0.00
9/10/2017 0.00
9/11/2017 0.00
9/12/2017 0.00
9/13/2017 0.11
9/14/2017 0.04
9/15/2017 T
9/16/2017 0.00
9/17/2017 0.00
9/18/2017 0.00
9/19/2017 0.00
9/20/2017 0.00
9/21/2017 0.00
9/22/2017 0.00
9/23/2017 0.00
9/24/2017 0.00
9/25/2017 0.00
9/26/2017
9/27/2017 0.00
9/28/2017 0.00
9/29/2017 0.00
9/30/2017 0.00



Observation Date Observation Time Precipitation Snowfall Snowfall SWE Snow Depth Snow SWE Notes
10/1/2016 7:15 AM 0.31 M M M M It is still raining lightly.
10/2/2016 8:00 AM 0.10 M M M M
10/4/2016 8:00 AM 0.00 0.0 M M M
10/5/2016 8:00 AM 0.00 0.0 M M M
10/6/2016 7:40 AM 0.00 0.0 M M M Fog. Visibility was about 400 feet.
10/7/2016 7:30 AM 0.00 0.0 M M M
10/8/2016 7:00 AM 0.20 M M M M
10/9/2016 8:00 AM 0.11 M M M M It was cloudy and raining all day but only measured amount was 0.11". This rain was not due to Hurricane Matthew.
10/10/2016 7:00 AM 0.00 0.0 M M M It will be bright and sunny with a few clouds today and cooler than it has been since Spring.
10/11/2016 7:10 AM 0.00 0.0 M M M Slightly foggy. Visibility on the ground to about 225'. Fog lifted by 0725.
10/12/2016 6:45 AM 0.00 0.0 M M M Foggy with visibility to about 250 feet.
10/13/2016 6:45 AM 0.00 0.0 M M M Very foggy - visibility to 250'. It cleared by 0730.
10/14/2016 8:00 AM 0.00 0.0 M M M No fog.
10/15/2016 8:40 AM 0.00 0.0 M M M Very foggy even at this late time - 0840. Visibility to about 250'.
10/16/2016 8:00 AM 0.00 0.0 M M M At 0645 fog existed only at tree top level and visibility was to about 2000'. By 0800 fog settled to the ground and visibility was about 350'.
10/17/2016 7:00 AM 0.00 0.0 M M M Dense fog with visibility about 200'.
10/18/2016 6:45 AM 0.00 0.0 M M M Foggy - visibility 200-250 feet.
10/19/2016 8:00 AM 0.00 0.0 M M M
10/20/2016 8:00 AM 0.00 0.0 M M M
10/21/2016 7:00 AM 0.00 0.0 M M M Still no rain. Some was expected overnight but it didn't come. It looks like rain today by the afternoon.
10/22/2016 7:00 AM 0.14 M M M M There were some light sprinkles as I emptied the rain gauge. I shall report that tomorrow. It is very blustery and that was beginning last evening. It is expected to remain blustery today. Lastly it is very cloudy - it might rain some more.
10/23/2016 7:30 AM T M M M M From yesterday - as I finished reading the rain measurement for the previous period, there was a light sprinkle. So I am reporting a Trace for today. The very cloudy sky cleared up yesterday so that it was mostly sunny and very blustery.
10/24/2016 8:00 AM 0.00 0.0 M M M
10/25/2016 8:00 AM 0.00 0.0 M M M First frost this morning, still at 0800 with the sun up.
10/26/2016 7:30 AM 0.00 0.0 M M M A freeze this morning as opposed to a light frost yesterday morning.
10/27/2016 7:40 AM 0.00 0.0 M M M Cloudy now.
10/28/2016 8:00 AM 0.03 M M M M
10/29/2016 8:00 AM 0.00 0.0 M M M
10/30/2016 8:00 AM 0.00 0.0 M M M
10/31/2016 8:00 AM 0.05 M M M M
11/1/2016 7:15 AM 0.00 0.0 M M M
11/2/2016 8:00 AM 0.00 0.0 M M M
11/3/2016 8:00 AM 0.02 M M M M There were two periods of rain: + 1122-1124 - Trace; + 1219-1246 - 0.02.
11/4/2016 8:00 AM 0.00 0.0 M M M
11/5/2016 8:00 AM 0.00 0.0 M M M
11/6/2016 7:50 AM 0.00 0.0 M M M Clear blue sky.
11/7/2016 7:00 AM 0.00 0.0 M M M Frost everywhere.
11/8/2016 6:45 AM 0.00 0.0 M M M Coldest morning this fall and month, 29°F with fog visibility just beyond 150' and frost everywhere. However at 0650 the fog was lifting as the sun was rising.
11/9/2016 7:00 AM 0.15 M M M M Time of rain is unknown, except it happened over night and into the morning, just after I awoke.
11/10/2016 8:00 AM 0.07 M M M M The amount of rain that continued after I took the AM measurement yesterday was 0.03". That means during the day to this AM it rained 0.04".
11/11/2016 7:50 AM 0.00 0.0 M M M Bright morning, partly cloudy. Temp still in 60s during the day and 40s at night.
11/12/2016 8:00 AM 0.00 0.0 M M M Below freezing temp but no frost.
11/13/2016 8:00 AM 0.00 0.0 M M M Extensive frost this morning and it is the coldest since last winter. Temp was 23.4°F.
11/14/2016 7:55 AM 0.00 0.0 M M M Frost
11/15/2016 7:00 AM 0.05 M M M M A light rain began the night before at 1844.
11/16/2016 8:00 AM 0.00 0.0 M M M
11/19/2016 8:00 AM 0.00 0.0 M M M slight frost
11/20/2016 8:00 AM 0.04 M M M M Greatest wind gust yesterday was 26 MPH. Fair skies today, still windy with scattered Cirrostratus clouds.
11/21/2016 7:30 AM 0.00 0.0 M M M The highest wind gust today was 31.5 MPH.
11/22/2016 8:00 AM 0.00 0.0 M M M
11/23/2016 7:00 AM 0.00 0.0 M M M
11/24/2016 8:00 AM 0.01 M M M M Time NA
11/25/2016 8:00 AM 0.00 0.0 M M M
11/26/2016 8:00 AM 0.00 0.0 M M M
11/27/2016 8:00 AM 0.00 0.0 M M M Bright and sunny with very few clouds. The lack of precipitation continues.
11/28/2016 8:00 AM 0.00 0.0 M M M Frost report
11/29/2016 7:30 AM 0.04 M M M M It was raining slightly as I took today's measurement. Hope that it rains more than a few hundreds of an inch.
11/30/2016 9:00 AM 0.52 M M M M IT is raining pretty steadily. Slight fog at 0700.
12/1/2016 7:40 AM 1.23 M M M M This is the most rain we have had since Sep 29th when we had 1.65" and before that 1.85" on Aug 18th. We have had a drought and this alleviates some of the conditions. Rain began yesterday (previously reported) at about 0600 and continued off and on all day. The last of the rain ended about midnight last night. The heaviest rain was about 2000 when the digital rain gauge recorded 0.10" in five minutes. Between 1950 and 2040 it rained 0.56".
12/2/2016 8:00 AM 0.00 0.0 M M M
12/3/2016 7:00 AM 0.00 0.0 M M M
12/4/2016 8:00 AM 0.00 0.0 M M M
12/5/2016 7:15 AM 0.26 M M M M
12/6/2016 8:15 AM 0.01 M M M M The wintry mix began at 0810, but turned to rain about 0830.
12/7/2016 8:00 AM 0.89 M M M M It rained nearly all day.
12/9/2016 8:00 AM 0.00 0.0 M M M
12/10/2016 7:30 AM 0.00 0.0 M M M
12/11/2016 7:05 AM T T T T T The first snow was just a dusting overnight.
12/12/2016 7:45 AM 0.14 M M M M It is drizzling lightly.
12/13/2016 8:00 AM 0.00 0.0 M M M Frost
12/14/2016 8:00 AM 0.00 0.0 M M M some frost; see report.
12/15/2016 7:50 AM 0.00 0.0 M M M No pptn but it surely is windy here. Winds gust max are frequently 20MPH.
12/16/2016 8:00 AM 0.00 0.0 M M M
12/17/2016 8:00 AM 0.20 0.0 0.22 0.0 0.22 Overnight there was freezing rain. It was difficult to get an accurate reading so the depth is about 0.20" +/- a few hundredths of an inch. It is sleeting as of the measurement time.
12/18/2016 8:00 AM 0.02 M M M M
12/19/2016 8:00 AM 0.00 0.0 M M M
12/20/2016 8:00 AM 0.00 0.0 M M M Frost report.
12/21/2016 7:45 AM 0.00 0.0 M M M Frost report.
12/22/2016 8:00 AM 0.00 0.0 M M M
12/23/2016 7:00 AM 0.00 0.0 M M M
12/24/2016 8:25 AM 0.47 M M M M It is still raining as of this time.
12/25/2016 8:00 AM 0.03 M M M M Rained ended about 0900 yesterday morning. Frost report.
12/26/2016 8:00 AM 0.00 0.0 M M M Happy First Day of Christmas!
12/27/2016 8:00 AM 0.01 M M M M Rain occurred before 0630.
12/28/2016 8:00 AM 0.00 0.0 M M M
12/29/2016 8:00 AM 0.19 M M M M Rain has stopped for now anyway.
12/30/2016 8:00 AM 0.02 M M M M It is difficult to determine when it stops raining.
12/31/2016 8:00 AM T T T T T There were several periods of brief snow squallels: I. From NW, 0940-0950, covered ground white with areas in sun melted by 1030; II. From W, 1005-1027; III. From NW, 1317-1325; IV. From W, 1411-1423, with snow pellets beginning at 1413 with visibility reduced to about 1000' due to blowing snow and at 1417 there were large flakes while the sun came out; V: From the West, 1451-1505. Never any accumulation except as stated in the morning at 0940.
1/1/2017 8:00 AM 0.00 0.0 M M M
1/2/2017 8:20 AM 0.23 M M M M It is still drizzling.
1/3/2017 8:00 AM 0.35 M M M M It is still raining fairly consistently and firmly.
1/4/2017 8:00 AM 0.75 M M M M Although I am reporting 12 hours late, at 0800 I read 0.75" of rain.
1/5/2017 8:00 AM 0.00 0.0 M M M
1/6/2017 7:55 AM T T T T T As for snow yesterday after I reported pptn. See below. Snow began at 1353 for an hour or so off and on and not amounting to much. At 1850 it began again and snowed until 2020 and it stuck all over but the ground and flat surfaces are not totally covered. See 7 Jan's report for more info. At 0755 it began snowing this morning.
1/7/2017 8:00 AM M 0.3 M 0.3 M The snow of 0.3" has to do with snow falling in the evening and night of 6 Jan 2017. I lost the melted snow measurement.
1/8/2017 8:00 AM 0.00 0.0 M M M
1/9/2017 8:00 AM 0.00 0.0 M M M
1/10/2017 8:00 AM 0.00 0.0 M M M
1/11/2017 7:50 AM T T T T T Between 0915 and 0930 there were flurries. Then at 2050-2100 there was pptn (either snow or rain).
1/12/2017 8:00 AM 0.13 M M M M Rain began about 1620 and off-and-on throughout the evening. My LaCrosse digital rain gauge reported rain between 1635 and 2050.
1/13/2017 8:00 AM 0.00 0.0 M M M Yesterday was a very warm day for the middle of January. It was 70.2°F.
1/14/2017 7:35 AM 0.00 0.0 M M M No rain, sleet or snow yet.
1/15/2017 8:00 AM 0.25 M M M M The freezing rain, sleet and/or snow did not materialize. It only rained, but was cold, The temp hovered between 33.1° and 39.8°F all day.
1/16/2017 8:00 AM 0.00 0.0 M M M
1/17/2017 7:45 AM 0.02 M M M M There were two periods of very brief showers. One yesterday between 1700 and 1715 for 0.01" and another sometime this morning before 0700. It was not raining at 0700 though.
1/18/2017 8:00 AM 0.17 M M M M
1/19/2017 8:00 AM 0.01 M M M M
1/20/2017 8:00 AM 0.00 0.0 M M M
1/21/2017 7:35 AM 0.03 M M M M Yesterday there was rain (per the digital rain gauge at 0820 for 0.01", then the other two hundredths of an inch fell as indicated below. This morning before 0735 it rained a Trace.
1/22/2017 8:00 AM 0.01 M M M M It misted very light rain off-and-on nearly all day.
1/23/2017 7:15 AM 0.11 M M M M Rain began at 1721 yesterday and this morning at collection time it was still misting, perhaps we are in a cloud but visibility is pretty good.
1/24/2017 7:45 AM 0.92 M M M M Rain began yesterday morning and was light all day long. The local farmer's fields are still retaining water. Our pond which in August was 85-90% dried up is now full to withing 4 inches of flooding over. At 1525 for 5 minutes it sleeted.
1/25/2017 7:35 AM 0.01 M M M M
1/26/2017 7:35 AM T M M M M At 0735 there was a trace of rain for a minute or two.
1/30/2017 8:00 AM T T T T T At 1726 last night, there was slight pttn and stopped. This morning there was a Trace of snow and not enough to melt and pour out of the large cylinder.
1/31/2017 7:45 AM T T T T T Snow began steadily at 0832, made the ground white, then stopped after less than 30 minutes. By 0930 it was all melted. About 5-10 minutes of flurries occurred at 1226 and stopped. By 0700 on 1/31, there were slight traces of round snow pebbles.
2/1/2017 8:00 AM 0.00 0.0 M M M
2/2/2017 8:00 AM 0.00 0.0 M M M
2/3/2017 8:00 AM 0.00 0.0 M M M
2/6/2017 7:40 AM 0.00 0.0 M M M
2/7/2017 7:10 AM 0.00 0.0 M M M No rain yet, but it is coming today, probably within the next several minutes.
2/8/2017 8:00 AM T M M M M There was a good amount of rain predicted for today but only a trace fell
2/9/2017 7:50 AM 0.23 M M M M As of now I don't know when the rain stopped. My weather station has the data but cannot recover it at this time.
2/10/2017 8:00 AM 0.02 T 0.02 T 0.02 The snow barely touched us. There were flurries at 0915-0920 and periodic snow squalls between 1530 and 1600. In the first part it was very windy and visibility was reduced to about 1/2 mile on the Potomac River and the farm. The ground turned white, but it did not last long. Then again squalls appeared between 1630 and 1640.
2/11/2017 8:00 AM 0.00 0.0 M M M
2/12/2017 8:00 AM T M M M M At 0800 today 2/12/2017, it was still raining, but it is a very, very light rain, yet not a drizzle.
2/13/2017 8:00 AM 0.10 M M M M No thunderstorm as predicted, but he have had high winds over night with continuous gusts (every minute recorded) over 12 MPH and in early morning hours between 15 and 28 MPH.
2/14/2017 8:00 AM 0.00 0.0 M M M
2/15/2017 8:00 AM 0.00 0.0 M M M
2/16/2017 8:00 AM 0.00 0.0 M M M Slight flurries began at 0750 and was continuing while I was looking at the rain gauge.
2/17/2017 8:00 AM T T T T T Light flurries began at 0750 and ended at 0815. No accumulation and not enough to melt into liquid.
2/18/2017 8:00 AM 0.00 0.0 M M M
2/19/2017 8:00 AM 0.02 M M M M
2/20/2017 8:00 AM 0.00 0.0 M M M
2/21/2017 8:00 AM 0.00 0.0 M M M
2/22/2017 8:00 AM 0.00 0.0 M M M
2/23/2017 7:15 AM 0.00 0.0 M M M Fog with visibility to about only 150'.
2/24/2017 7:55 AM 0.00 0.0 M M M
2/25/2017 8:00 AM 0.00 0.0 M M M
2/26/2017 8:00 AM 0.00 0.0 M M M
2/27/2017 7:35 AM 0.00 0.0 M M M See frost report.
2/28/2017 8:00 AM 0.00 0.0 M M M
3/1/2017 8:00 AM 0.45 M M M M
3/2/2017 8:00 AM 0.00 0.0 M M M
3/3/2017 8:00 AM 0.02 0.2 0.02 0.2 0.02 There was 0.2" inch of snow by day break. It most likely snowed in the early morning hours because the temp dropped to 31.9°F at 0135. This is probably the end of snow for this winter.
3/4/2017 8:00 AM T T T T T At this time (1110) yesterday, I could see snow coming down at the Potomac River and northward. At the same time the snow was blowing toward us
3/5/2017 8:00 AM 0.00 0.0 M M M
3/6/2017 7:40 AM 0.00 0.0 M M M
3/7/2017 7:10 AM 0.03 M M M M There were two periods of rain. The first was on 6 March between 1544 and 1555. This left only a trace. This morning at 0710 there was 0.03" in the rain gauge and it was drizzling. The digital rain gauge must be stuck because the whole area is wet and the digital rain gauge reported only 0.01" at 0735.
3/8/2017 7:30 AM 0.16 M M M M Very light rain began at 1438, but then at about 1710 it came down sporadically and harder.
3/9/2017 8:00 AM 0.01 M M M M
3/10/2017 8:15 AM 0.11 M M M M Rain began at 0655 and is raining during the collection. It could rain all day with a possibility of a bit of snow today.
3/11/2017 8:00 AM 0.07 T 0.07 T 0.07 At 0940-0945 on 3/10, it sleeted. Then at 1023-1135 it snowed. Nothing stuck as the ground was warm. The sun came out when the snow stopped. PLEASE NOTE: Yesterday morning there was some rain around the time that I recorded the rain pptn. It might be combined with yesterday's snow fall.
3/12/2017 8:00 AM 0.00 0.0 M M M
3/13/2017 8:00 AM 0.00 0.0 M M M
3/14/2017 8:00 AM 1.64 3.8 1.64 3.8 1.64 Snow in the CoCoRaHS gauge measured 2.0 inches, however on the white board and around the field the average measurement was 3.8 inches. The first snow was between 1855 and 1858. Then at 2000 it began raining and the outside temp was 35°F. At 2035 it began snowing steadily and the temp was 34.6°F. The snow was sticking on the deck and grassy areas, but not the stone walk. At 2210, snow on the deck measured 0.5".
3/15/2017 8:00 AM T T T 3.8 1.64 it was snowing as of yesterday's reading. That snow stopped at 1120.
3/16/2017 7:55 AM 0.00 0.0 M M M No pptn, but cold - never above freezing.
3/17/2017 8:00 AM 0.00 0.0 M M M
3/18/2017 8:30 AM 0.02 0.0 0.00 M M Most of the snow has melted, leaving 1-2 inches where it was piled up. There is still about 1" of snow scattered in the flatter, field areas of the farms.
3/19/2017 7:50 AM 0.43 M M M M It is still raining lightly after rain began at 1808 yesterday.
3/20/2017 8:00 AM 0.02 M M M M
3/21/2017 7:45 AM T M M M M Just a few drops fell, probably early this morning, before 0700.
3/22/2017 8:00 AM 0.00 0.0 M M M
3/23/2017 7:00 AM 0.00 0.0 M M M
3/24/2017 8:00 AM 0.00 0.0 M M M
3/25/2017 8:00 AM 0.22 M M M M
3/26/2017 8:00 AM 0.01 M M M M
3/27/2017 7:40 AM 0.05 M M M M A light mist began at 2030 yesterday and it is still misty this morning. It is also foggy this AM.
3/28/2017 7:50 AM 0.02 M M M M It either rained sometime during the night a bit or this is due to very heavy condensation.
3/29/2017 7:50 AM 0.72 M M M M A light rain began at 0811 and quit about 1005. Light rain again between 1100 and 1200. More rain between 1955 and 2035. Skywarn report: There is a thunderstorm out here with 3 thunderclaps per 10 minutes for the past 20 minutes. There could be water run off from the farm fields due to this rain. A light rain began at 0811 and the most significant pptn occurred between 0845 and now (0905).
3/30/2017 7:00 AM 0.01 M M M M There were dark gray clouds overhead, but not much of a sign that it rained before taking the 0700 reading because the deck was dry. There was nothing recorded in the digital rain gauge, but the the two seldomly agree.
3/31/2017 8:00 AM 0.30 M M M M It is raining steadily when this measurement was taking.
4/1/2017 8:00 AM 1.41 M M M M Yesterday I reported 0.30" of rain between 0605 and 0800. During the day and evening it rained another 1.41" for a total of 1.71". I made two Skywarn reports. One was at 0800 for the first 3/10 of an inch then again at reporting on an additional 0.92" at 1725. According to the digital rain gauge the last 0.01" of rain was recorded at 0145 this morning for a total of 1.71" of rain on 31 March 2017. Field flooding is seen every time there is about 1" or rain or greater, unless the farm fields are very dry.
4/2/2017 8:00 AM 0.01 M M M M
4/3/2017 8:00 AM 0.00 0.0 M M M
4/4/2017 8:00 AM 0.08 M M M M At 0758 while I was walking to the rain gauge, it began raining. By 0800 it stopped. So that was a Trace amount of rain, besides what is reported here. However the digital rain gauge reported 0.01: between 0800 and 0805. (NOTE: The two rain gauges are separated by about 300 feet.) The of "Pptn Ended" time reported below was taken from the digital rain gauge.
4/5/2017 8:00 AM 0.00 0.0 M M M
4/6/2017 7:30 AM 0.02 M M M M It rained sometime overnight. The weather station isn't reporting data to determine when the pptn came down.
4/7/2017 7:30 AM 0.99 M M M M Reported to Skywarn twice. Once was with reporting greater than 0.30" rain per hour and the other was after a thunderstorm during a weather warning of a possible tornado. There was no tornado in my area, no hail and the greatest wind gust was 15 MPH. It rained throughout the day. The farm fields are saturated so there was a lot of water run off during the downpours.
4/8/2017 8:00 AM 0.01 M M M M I don't know whether the pptn is due to actual rain or condensation.
4/9/2017 8:00 AM 0.00 0.0 M M M
4/10/2017 8:00 AM 0.00 0.0 M M M
4/11/2017 8:00 AM 0.00 0.0 M M M
4/12/2017 6:45 AM 0.00 0.0 M M M No rain yet.
4/13/2017 8:00 AM 0.03 M M M M
4/14/2017 8:00 AM 0.00 0.0 M M M
4/15/2017 8:00 AM 0.00 0.0 M M M
4/16/2017 7:30 AM 0.05 M M M M
4/17/2017 7:15 AM T M M M M There were two instances of pptn in the last 24 hours. One about 1605 yesterday and another about 0530 today. The total was a Trace.
4/18/2017 8:00 AM 0.16 M M M M
4/19/2017 7:30 AM 0.03 M M M M It rained sometime before 0615.
4/20/2017 7:25 AM 0.10 M M M M It was raining while I took this mornings measurements. Between 0655 and 0700 there were 3 lightning flashes with thunder with 3 seconds between the flashes and thunder. There was some rain during the day (0.03" or less) and the remainder was for today.
4/21/2017 7:15 AM 0.42 M M M M During this storm (heard no lightning however) 0.28" of rain fell in 5-10 minutes per my digital rain gauge.
4/22/2017 7:15 AM 0.56 M M M M Submitted a Skywarn report of 0.42" of rain in 10 minutes. No major flooding, just minor road run off as usual. The maximum wind gust was 25.69 MPH at 1555.
4/23/2017 7:50 AM 0.43 M M M M It essentially rained all day stopping about 1755. It began about 0505. Time is based on the digital rain gauge.
4/24/2017 7:55 AM 0.06 M M M M It rained sometime overnight, most likely in the morning hours. If I can figure it out when, I'll amend this report.
4/25/2017 7:50 AM 0.30 M M M M It was misting while I was reading the rain pptn.
4/26/2017 8:00 AM 0.20 M M M M Rain continued from yesterday morning about 0300 until about 0640 this morning. It appears to be raining still across the Potomac River. Don't know if it will come this way as the wind is blowing NW-NNE.
4/27/2017 8:00 AM 0.02 M M M M It is slightly foggy and misty. The digital rain gauge recorded pptn about 0545 of 0.01".
4/28/2017 7:20 AM 0.00 0.0 M M M The 0.01" recording of pptn is due to condensation. At 0630 there was ground fog towards the river and there was a good amount of dew on the grass and in the CoCoRaHS rain gauge.
4/29/2017 7:00 AM 0.01 M M M M It rained sometime just after 0400.
4/30/2017 7:10 AM 0.00 0.0 M M M It is overcast.
5/1/2017 8:00 AM 0.22 M M M M Cannot determine a more accurate rain period at this time.
5/2/2017 8:00 AM 0.02 M M M M Light rain for only a short time.
5/3/2017 7:55 AM 0.00 0.0 M M M No pptn and again very windy likes it been for the previous two days.
5/4/2017 7:30 AM 0.00 0.0 M M M
5/5/2017 7:35 AM 0.98 M M M M It has been raining off and on since 2006 last night. Since it is still raining and the 1" mark for Skywarn will be achieved, there will be a Skywarn report from MO-319. There is minor field flooding.
5/6/2017 7:50 AM 0.43 M M M M Yesterday it rained another 0.40" and stopped. The last 0.03" fell between 2300 and 2315 last night
5/7/2017 8:00 AM 0.12 M M M M There was a trace of rain at 0754.
5/8/2017 7:20 AM 0.02 M M M M I quick dump of rain occurred in the late afternoon leaving 0.02" between 1715 and 1727. In addition between 1730 and 1735 there was a 1/3 rainbow to the NW.
5/9/2017 8:00 AM 0.00 0.0 M M M Frost this morning. Although the LaCrosse thermometer registered 33.1°F, in the shady areas and cars there was frost.
5/10/2017 8:00 AM 0.00 0.0 M M M
5/11/2017 8:00 AM 0.14 M M M M The rain as predicted for today began at 0725 delivering 0.14" in the first 30+ minutes.
5/12/2017 7:00 AM 0.96 M M M M FYI: My LaCrosse digital thermometer registered 1.11" of rain. This is located ~180' NE of the CoCoRaHS rain gauge. Minor street and field flooding, as usual. There is still standing water.
5/13/2017 8:00 AM 0.51 M M M M While in Poolesville, MD, at 1503 it began raining lightly. I called home and there was no rain at MD-MG-103. By the time I got to my destination at the intersection of MD #28 and Seneca Road, there was no rain. At 1630 when I left this intersection rain began and I had light rain all the way home.
5/14/2017 7:00 AM 0.02 M M M M Rain times are approximate: 0810 on 5/13 and 0545 on 5/14.
5/15/2017 8:00 AM 0.00 0.0 M M M
5/16/2017 8:00 AM 0.00 0.0 M M M
5/17/2017 7:30 AM 0.00 0.0 M M M
5/18/2017 8:00 AM 0.00 0.0 M M M
5/19/2017 8:00 AM 0.08 M M M M Initial rain began at 1723 with large drops (perhaps melted hail). Then at 1736 more of the same for a minute or less. At 1858 a light rain began until 1905. There was thunder from the south and slightly overhead. Some lightning appears at 1910 with lots of rolling thunder with a light to medium rain. At 1928 a hazy sun appeared in the west with rain rain. Rain stopped at 1950.
5/20/2017 8:00 AM 0.32 M M M M The heaviest rain occurred between 1810 and 1815 delivering 0.26" of rain. SKYWARN: Thunderstorm report. 1715 Dark clouds overhead, from the other side of the Potomac River towards Poolesville. 1800 Very loud thunder clap. 1803 Sudden down pour with sun shining in the west and thunder overhead every five minutes. 1815 Stopped raining. 1829 Heavy rain seen across the river ESE but not near the river. 1834 Rain is coming eastward as it is now raining at the Potomac River. It is also raining towards Poolesville MD. 1835-1843 More rain again.
5/21/2017 8:00 AM 0.00 0.0 M M M
5/22/2017 7:30 AM 0.21 M M M M It is raining as I collected today's data. It has been light and off-and-on.
5/23/2017 8:00 AM 0.03 M M M M
5/24/2017 7:00 AM 0.32 M M M M Rain began at 1510 and lasted for 35 minutes. It began again at 1410 for one hour, then again at 1759 till 1820 and again began at 2015. These were actual observations. The digital rain gauge recorded more stops, starts and stops after 2015.
5/25/2017 7:30 AM 1.17 M M M M It is raining lightly as I took today's rain data. Rain began last night and continued throughout the night, off and on. In 10 minutes between 0540 and 0550 it rained 0.24".
5/26/2017 7:30 AM 0.40 M M M M At 1645 it got very, very dark and at 1646 rain began lightly then in 2 mins. it was heavy with continuous thunder. Could not see across the Potomac River (to the west) because it was raining so heavily there. At 1705 the heavy rain began here with lots of wind - 11 MPH max. gust. Heavy rain stopped at 1720 with all rain stopping at 1826. There was about 10 minutes of rolling thunder at 1815.
5/27/2017 7:00 AM T M M M M At 0650 there was a trace of rain (drops on the deck).
5/28/2017 8:00 AM 0.12 M M M M It rained off-and-on all day beginning at 1002 till the afternoon.
5/29/2017 8:00 AM 0.03 M M M M
5/30/2017 7:15 AM 0.01 M M M M When I got up this AM, the deck was covered with water, but the rain was very, very light. When I checked the rain gauge, it measured 0.01". The digital rain gauge has not recorded any pptn.
5/31/2017 7:30 AM 0.13 M M M M It rained off-and-on throughout the day. The heaviest was in the evening. There were only a few lightning flashes and hardly any thunder.
6/3/2017 7:30 AM 0.00 0.0 M M M
6/4/2017 8:00 AM 0.00 0.0 M M M
6/5/2017 8:00 AM 0.00 0.0 M M M
6/6/2017 7:15 AM 0.13 M M M M
6/7/2017 8:00 AM 0.00 0.0 M M M
6/8/2017 7:45 AM 0.03 M M M M It rained off-and-on during the morning. Nothing in the afternoon except an occasional trace total.
6/9/2017 8:00 AM 0.00 0.0 M M M
6/10/2017 7:55 AM 0.00 0.0 M M M
6/11/2017 7:00 AM 0.00 0.0 M M M
6/12/2017 7:35 AM 0.00 0.0 M M M
6/13/2017 7:55 AM 0.00 0.0 M M M
6/14/2017 8:00 AM 0.00 0.0 M M M
6/15/2017 8:00 AM 0.00 0.0 M M M
6/16/2017 8:00 AM 0.00 0.0 M M M
6/17/2017 8:00 AM 0.01 M M M M Precipitation yesterday began with light rain for 1 1/2 to 2 hours,leaving only 0.01" of rain. This AM when I was checking the rain gauge at 0800 a drizzle began.
6/18/2017 8:00 AM T M M M M Rain began at 0800 yesterday and only left a Trace.
6/19/2017 7:25 AM 0.00 0.0 M M M
6/20/2017 7:00 AM 1.85 M M M M In one hour and 10 minutes the temp dropped from 21 deg. There was 1.85" in the CoCoRaHS gauge and 2.24" from my LaCrosse digital gauge. At 1645 till 1700 there was a trace of rain or perhaps a few hundreds of an inch. The heaviest rain occurred at 1440 for 0.19" and 1447-1457 for 0.74". The flooding is typical for an inch or greater. It flows off the fields and floods River Road, as though it were a river.
6/21/2017 7:00 AM 0.00 0.0 M M M
6/22/2017 7:30 AM 0.00 0.0 M M M
6/23/2017 8:00 AM 0.08 M M M M
6/24/2017 7:30 AM 0.28 M M M M The period of rain is unknown at this time
6/25/2017 7:20 AM 0.00 0.0 M M M
6/26/2017 7:00 AM 0.00 0.0 M M M
6/27/2017 7:20 AM 0.00 0.0 M M M
6/28/2017 8:00 AM 0.00 0.0 M M M
6/29/2017 8:00 AM 0.00 0.0 M M M
6/30/2017 8:00 AM 0.00 0.0 M M M
7/1/2017 6:45 AM T M M M M There was a trace of rain at 1645 and then early this morning before 0600.
7/2/2017 7:30 AM 0.20 M M M M The strongest gust during the period of the storm was 15 MPH at 1445 from the NW. Rain fell between 1440 and 1445 per the digital rain gauge. At 1430 I was approaching Poolesville, MD, from the east along White's Ferry Road and saw very dark clouds and several cloud-to-ground lightning strikes. At 1443 a light rain began as I entered the border of Poolesville. At 1447 when I approached Edwards Ferry Road on White' Ferry Road, traveling west, the rain dumped, flooding the street and causing major large puddles every where. At 1452 as I approached Elmer School Road the heavy rain slowed down a lot. When I got home about 1500 there was evidence of a cloud burst with many green leaves one the ground and puddles everywhere, as is typical when such a rain comes.
7/3/2017 7:15 AM 0.00 0.0 M M M
7/4/2017 7:00 AM 0.00 0.0 M M M
7/5/2017 6:30 AM T M M M M Rain began this AM at ~0620.
7/6/2017 8:00 AM 1.02 M M M M Rain began lightly and increased pptn began about 1930. Rain stopped for about 1 hour or so in the late evening and picked up again after midnight. Between 1930 and 2030 it rained 0.35". Skywarn reports submitted.
7/7/2017 8:00 AM 0.70 M M M M It rained off and on all day ending about 0420 this morning. It looks like it'll rain a bit more today, at least this morning.
7/8/2017 8:00 AM 0.05 M M M M
7/9/2017 8:00 AM 0.00 0.0 M M M
7/10/2017 7:35 AM 0.00 0.0 M M M
7/11/2017 7:00 AM 0.00 0.0 M M M
7/12/2017 7:00 AM T M M M M Between 1728 and 1940 there were periods of a few drops to a light rain at 1929. There was no accumulation in the CoCoRaHS gauge. I heard distant thunder at 1728 and then it turned to rolling thunder several minutes later. Thunder just stopped at 1840 exactly.
7/13/2017 8:00 AM T M M M M Light rain at 1349 for a few minutes.
7/14/2017 7:30 AM 0.00 0.0 M M M Although rain was predicted for the greater WDC area, we saw nothing.
7/15/2017 7:45 AM 1.20 M M M M It was expected to rain, about 30%, last night about midnight and it produced 0.01". The rest, as seen above, was from the storm that passed through just before 1600. SKYWARN Report: At 1543 I was in Gaithersburg-Darnestown-Kentlands (MD) area when it began raining, slowly at first then heavily. There was cloud-to-cloud lightning and cloud-to-ground lightning. As I proceeded west on White's Ferry Road towards my residence the heavy rain stopped at 1548. As I was about 1 mile before Edward's Ferry and Wasche Roads and White's Ferry Road there was a lot of debris on the road from tree twigs and leaves. There was also one 3-4" branch down that someone moved off the road. Once I got to River Road, just after 1600, there was some tree debris on it. The roads showed only minor, typical road flooding such a storm produces. No other damage or road issues were noticed.
7/16/2017 8:00 AM 0.00 0.0 M M M
7/17/2017 7:50 AM 0.00 0.0 M M M
7/18/2017 7:00 AM 0.00 0.0 M M M Yesterday at 1634 I was in Poolesville, MD, and it rained a few drops for a few minutes. Earlier at 1600 my sister-in-law told me that it was raining very hard and hailing in the Darnestown area of Gaithersburg. Meanwhile at my location MD-MG-103 there was not even a trace of rain. This is probably due to the Potomac River and even the islands in the river both north and south of White's Ferry on the river. There were dark clouds to the north and Frederick, MD, and to the south and Gaithersburg. At 0700 there was fog limiting visibility to 250-275'.
7/19/2017 7:00 AM 0.00 0.0 M M M In the latter part of the afternoon, I received a NWS weather advisory of a severe thunderstorm and flash flood. About 1700 there was thunder activity, but it amounted to nothing in my area.
7/20/2017 7:00 AM 0.00 0.0 M M M
7/21/2017 8:00 AM 0.00 0.0 M M M
7/22/2017 8:00 AM 0.00 0.0 M M M
7/23/2017 7:40 AM 0.57 M M M M For the heaviest rain at 1350, it was 0.21". Rain was periodic: 1350-1445 for 0.24"; 1651-1820; and 2045-0030 on 7/23/17. Wind gust max just before the storm at 1345 was 18 MPH and 12 MPH at 1350.
7/24/2017 7:50 AM 0.51 M M M M There were a couple periods (not recorded) where the rain came down in droves. A few large, dead branches came down on River Road. Thunder began the same time that rain started. Street flooding was profuse, causing vehicles to go quite slowly due to the water's depth. This street flooding is seen frequently when it rains 0.30" in an hour or less, like it did yesterday.
7/25/2017 8:00 AM 0.00 0.0 M M M
7/26/2017 8:00 AM 0.00 0.0 M M M
7/27/2017 8:00 AM 0.00 0.0 M M M
7/28/2017 7:00 AM 0.00 0.0 M M M
7/29/2017 7:00 AM 4.67 M M M M There were 3 periods of very heavy rain: 1705-1800, 1.22"; 2120-2220, 1.02"; 2240-2355, 1.63". Rain began lightly at 0813 for about one hour, then again 1150 for short time and again at 1656, when it began raining heavily. The heavy pptn periods were taken from the digital rain gauge, whereas the other rain period recordings were actual observations. The farm fields began flooding around 1730 yesterday. There was some slight gravel road (River Road) damage in the early evening, but very heavy rain later in the evening caused more gravel movement. Only one large, dead branch came down and there was no electricity outage. My pond which was two feet below the drain pipe had overflowed. There is still standing water in some farm fields. Skywarn report submitted. The flooding reported is typical when it rains one inch or greater, especially during a short period.
7/30/2017 7:30 AM 0.12 M M M M Rain blowing from the N-NW began at 0934 and about 1110 it began lightly and steadily, then sporadically until about 1420.
7/31/2017 8:00 AM 0.00 0.0 M M M
8/1/2017 7:45 AM 0.00 0.0 M M M
8/2/2017 8:00 AM 0.00 0.0 M M M
8/3/2017 7:30 AM 0.00 0.0 M M M
8/4/2017 8:00 AM 0.09 M M M M Later in the afternoon and earlier in the evening there was thunderstorm activity towards DC, the rest of Mntgomery County and Prince George's County, MD, but nothing up here. About 2000, there was very interesting dark cloud activity overhead and towards Virginia across the Potomac River, especially toward the SW. At 2020 it began raining; at 2028 rain came down in large drops; at 2032 it rained rather heavily for a few minutes. Visibility at the tree line of the Potomac River was cut off. This morning even at 0800, fog reduced visibility to 225-250', fence lines.
8/5/2017 8:00 AM 0.13 M M M M It rained over night.
8/6/2017 8:00 AM 0.00 0.0 M M M
8/7/2017 6:45 AM 0.04 M M M M It rained over night sometime, but the big rain has not yet begun. It was supposed to begin about midnight and rain 50%+ all morning. At 0644, a very light rain began. Flooding is expected based upon the amount of rain that should be coming all day today
8/8/2017 6:20 AM 0.25 M M M M It rained till the early afternoon and was light enough that not much rain was collected and there was no flooding here. Rain stopped about 1330, after beginning with my rain report collection time yesterday.
8/9/2017 7:30 AM 0.00 0.0 M M M No rain. Before sunrise, fog visibility was 100 feet, but after sunrise it moved to about 500-750 feet.
8/10/2017 7:45 AM 0.00 0.0 M M M
8/11/2017 7:00 AM 0.00 0.0 M M M
8/12/2017 7:45 AM 1.60 M M M M Rain began very lightly at 1725 and then later in the evening it became heavier with thunderstorms. No record available at this time as to when it stopped raining and when the heaviest rain occurred. There is a low lying cloud with visibility about 400-500 feet.
8/13/2017 7:00 AM 0.53 M M M M At 1830ish very dark clouds, possibly rain S towards Poolesville; N towards Frederick and in VA W past the river. Overhead clouds were lighter and higher; some thunder. When rain began at 1834 there was some thunder; at 1850 rolling thunder and lightning overhead. At 1856 rain was so heavy that I could not see across the Potomac River at tree level.
8/14/2017 7:30 AM 0.00 0.0 M M M
8/15/2017 7:30 AM 0.04 M M M M It rained two times. First at 1256 for a few minutes to give 0.02", then at 1732 for another 0.02",
8/16/2017 7:30 AM 0.10 M M M M
8/17/2017 7:30 AM 0.00 0.0 M M M
8/18/2017 7:30 AM 0.02 M M M M
8/19/2017 7:30 AM 1.54 M M M M Lot's of rain that produced flooding. The street was completed flooded for about 30-60 minutes. This is usual and typical with water run off from farm fields. There are no drainage ditches here. Rain began at 1532, lightly then at 1545 it became very heavy. It stopped about 1610 and got very heavy again at 1625. Visibility of 1/2 mile for both downpour events. There was flooding from the farm fields and River Road was a 3" deep river from edge to edge. During the storm wind gusts between 1550 and 1605 were from 11 to 15 MPH every five minutes of recording. Skywarn report submitted.
8/20/2017 6:20 AM 0.20 M M M M
8/23/2017 6:15 AM 0.09 M M M M
8/24/2017 7:00 AM 0.00 0.0 M M M
8/25/2017 7:30 AM 0.07 M M M M
8/26/2017 7:30 AM 0.00 0.0 M M M
8/27/2017 8:00 AM 0.00 0.0 M M M
8/28/2017 8:00 AM 0.00 0.0 M M M
8/29/2017 7:30 AM 0.12 M M M M It is raining at this collection time.
8/30/2017 7:00 AM 0.48 M M M M Lower visibility 0700 on 8/30 with visibility of 750-1000' due to fog. It rained all day except for a few brief periods.
8/31/2017 7:30 AM 0.00 0.0 M M M Slight fog close to the C&O canal and Potomac River.
9/1/2017 7:30 AM 0.04 M M M M At 2043 on 8/31 I was approaching Poolesville, MD, from the east and I met with occasional raindrops. It was like that all the way home. When I arrived at the intersection of White's Ferry Road and River Road, there was no rain at 2100. Rain began at my location at 2115, but nothing was recorded by my weather station rain gauge.
9/2/2017 6:45 AM 0.09 M M M M It was rain intensely as I recorded the rain that has fallen. It must have stopped and begun again, instead of raining all night as it was scheduled. Rain was first recorded by my weather station at 0600.
9/3/2017 8:00 AM 0.25 M M M M Rain began yesterday AM (see yesterday's report for time).
9/4/2017 8:00 AM 0.00 0.0 M M M
9/5/2017 7:45 AM 0.00 0.0 M M M
9/6/2017 8:00 AM 2.42 M M M M Yesterday's storm was most interesting. 1608: Looked across the Potomac River to the W and I could not see the tree line fm SW to W, due to heavy rain there. 1610: that rain moved N along the river so I could not see the tree line to the NW. 1643: very large rain drops (2+ inches) fell, as noticed from the ground splatter. 1651: very heavy rain began. Wind gust max 22MPH, WNW. During the middle of the storm the farm fields were gushing with water; the gravel River Road received much rain as the gravel was moved around. At 2000, there was still two inches of flowing water down the road, despite rain had stopped for 30 minutes already. There were two periods of rain with the first one ending at 1935, then picking up about 0230 till about 0255. There was only one period of intense rain. Skywarn report submitted.
9/7/2017 8:00 AM 0.67 M M M M It rained pretty much all day, lightly however. Rain stopped about 2030.
9/8/2017 7:30 AM 0.00 0.0 M M M
9/9/2017 7:30 AM 0.00 0.0 M M M
9/10/2017 8:00 AM 0.00 0.0 M M M
9/11/2017 8:00 AM 0.00 0.0 M M M
9/12/2017 7:30 AM 0.00 0.0 M M M
9/13/2017 7:45 AM 0.11 M M M M It is not rainy as of this reading.
9/14/2017 8:00 AM 0.04 M M M M
9/15/2017 7:30 AM T M M M M A very short and brief rain.
9/16/2017 8:00 AM 0.00 0.0 M M M
9/17/2017 7:30 AM 0.00 0.0 M M M Visibility of 500 feet due to due to ground fog.
9/18/2017 7:30 AM 0.00 0.0 M M M Visibility to about 300 feet due to fog.
9/19/2017 8:00 AM 0.00 0.0 M M M
9/20/2017 7:00 AM 0.00 0.0 M M M There is a thin, low-lying fog.
9/21/2017 7:30 AM 0.00 0.0 M M M
9/22/2017 7:30 AM 0.00 0.0 M M M
9/23/2017 7:30 AM 0.00 0.0 M M M
9/24/2017 7:00 AM 0.00 0.0 M M M
9/25/2017 7:30 AM 0.00 0.0 M M M
9/27/2017 8:00 AM 0.00 0.0 M M M
9/28/2017 8:00 AM 0.00 0.0 M M M
9/29/2017 7:30 AM 0.00 0.0 M M M Yesterday was a very windy day, with consistent gusts of over 10 MPH all day; consistent gusts over 15 MPH in the AM; and peak of 21 MPH NNW at 0947.
9/30/2017 7:30 AM 0.00 0.0 M M M No rain for the 16th day in a row.



Start Date End Date & Time Duration in Days Precipitation Snow Depth Snow Depth SWE Notes
11/17/2016 11/18/2016 8:00 AM 2 0.00 M M
1/27/2017 1/29/2017 2:00 PM 3 0.00 0.0 0.00 I was gone for a few days.
2/4/2017 2/05/2017 8:00 AM 2 0.00 0.0 0.00
6/1/2017 6/02/2017 7:30 AM 2 0.01 M M
8/21/2017 8/22/2017 6:15 AM 2 0.00 M M



Observation Date Observation Time Notes Largest Stone Size Average Stone Size Smallest Stone Size Stone Consistency Duration Minutes Durration Accuracy Damage Timing More Rain than Hail Hail Started Largest Hail Started Angle of Impact Number of Stones on Pad Distance Between Stones on Pad Depth of Stones on Ground