Station Overview Station Location
Station Number MD-MG-128 Latitude 39.151469
Station Name North Potomac 3.8 N Longitude -77.238919
County Montgomery Elevation (ft) 405



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 18 3.47 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
Nov 18 3.53 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
Dec 18 3.15 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
Jan 19 2.86 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
Feb 19 2.76 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
March 19 3.74 2.75 17 2.75 17 0.00 0 0 5 0 0.0 0 0
April 19 3.33 2.31 30 2.23 28 0.08 2 1 11 2 0.0 0 0
May 19 4.38 6.11 31 6.11 31 0.00 0 0 18 2 0.0 0 0
June 19 3.81 3.47 30 3.47 30 0.00 0 0 13 2 0.0 0 0
July 19 3.81 5.25 31 5.25 31 0.00 0 0 9 1 0.0 0 0
Aug 19 3.22 8.44 31 6.76 21 1.68 10 1 6 1 0.0 0 0
Sept 19 4.05 0.04 29 0.04 29 0.00 0 0 2 3 0.0 0 0
Water Year Totals: 42.11" 28.37" 199 days 26.61" 187 1.76" 12 days 2 64 days 11 days 0.0" 0 days 0 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
10/1/2018
10/2/2018
10/3/2018
10/4/2018
10/5/2018
10/6/2018
10/7/2018
10/8/2018
10/9/2018
10/10/2018
10/11/2018
10/12/2018
10/13/2018
10/14/2018
10/15/2018
10/16/2018
10/17/2018
10/18/2018
10/19/2018
10/20/2018
10/21/2018
10/22/2018
10/23/2018
10/24/2018
10/25/2018
10/26/2018
10/27/2018
10/28/2018
10/29/2018
10/30/2018
10/31/2018
11/1/2018
11/2/2018
11/3/2018
11/4/2018
11/5/2018
11/6/2018
11/7/2018
11/8/2018
11/9/2018
11/10/2018
11/11/2018
11/12/2018
11/13/2018
11/14/2018
11/15/2018
11/16/2018
11/17/2018
11/18/2018
11/19/2018
11/20/2018
11/21/2018
11/22/2018
11/23/2018
11/24/2018
11/25/2018
11/26/2018
11/27/2018
11/28/2018
11/29/2018
11/30/2018
12/1/2018
12/2/2018
12/3/2018
12/4/2018
12/5/2018
12/6/2018
12/7/2018
12/8/2018
12/9/2018
12/10/2018
12/11/2018
12/12/2018
12/13/2018
12/14/2018
12/15/2018
12/16/2018
12/17/2018
12/18/2018
12/19/2018
12/20/2018
12/21/2018
12/22/2018
12/23/2018
12/24/2018
12/25/2018
12/26/2018
12/27/2018
12/28/2018
12/29/2018
12/30/2018
12/31/2018
Day of YearDaily PrcpMultiday Prcp
1/1/2019
1/2/2019
1/3/2019
1/4/2019
1/5/2019
1/6/2019
1/7/2019
1/8/2019
1/9/2019
1/10/2019
1/11/2019
1/12/2019
1/13/2019
1/14/2019
1/15/2019
1/16/2019
1/17/2019
1/18/2019
1/19/2019
1/20/2019
1/21/2019
1/22/2019
1/23/2019
1/24/2019
1/25/2019
1/26/2019
1/27/2019
1/28/2019
1/29/2019
1/30/2019
1/31/2019
2/1/2019
2/2/2019
2/3/2019
2/4/2019
2/5/2019
2/6/2019
2/7/2019
2/8/2019
2/9/2019
2/10/2019
2/11/2019
2/12/2019
2/13/2019
2/14/2019
2/15/2019
2/16/2019
2/17/2019
2/18/2019
2/19/2019
2/20/2019
2/21/2019
2/22/2019
2/23/2019
2/24/2019
2/25/2019
2/26/2019
2/27/2019
2/28/2019
3/1/2019
3/2/2019
3/3/2019
3/4/2019
3/5/2019
3/6/2019
3/7/2019
3/8/2019
3/9/2019
3/10/2019
3/11/2019
3/12/2019
3/13/2019
3/14/2019
3/15/2019 0.00
3/16/2019 0.00
3/17/2019 0.00
3/18/2019 0.00
3/19/2019 0.00
3/20/2019 0.00
3/21/2019 0.10
3/22/2019 2.57
3/23/2019 0.06
3/24/2019 0.00
3/25/2019 0.00
3/26/2019 0.01
3/27/2019 0.00
3/28/2019 0.00
3/29/2019 0.00
3/30/2019 0.00
3/31/2019 0.01
Day of YearDaily PrcpMultiday Prcp
4/1/2019 0.02
4/2/2019 T
4/3/2019 T
4/4/2019 0.00
4/5/2019 0.01
4/6/2019 0.13
4/7/2019 0.00
4/8/2019 **
4/9/2019 0.08
4/10/2019 0.00
4/11/2019 0.00
4/12/2019 0.00
4/13/2019 0.52
4/14/2019 0.00
4/15/2019 0.15
4/16/2019 0.00
4/17/2019 0.00
4/18/2019 0.00
4/19/2019 0.00
4/20/2019 0.57
4/21/2019 0.01
4/22/2019 0.00
4/23/2019 0.00
4/24/2019 0.00
4/25/2019 0.00
4/26/2019 0.24
4/27/2019 0.51
4/28/2019 0.04
4/29/2019 0.03
4/30/2019 0.00
5/1/2019 0.15
5/2/2019 0.00
5/3/2019 0.45
5/4/2019 0.28
5/5/2019 0.49
5/6/2019 1.08
5/7/2019 0.00
5/8/2019 0.00
5/9/2019 0.00
5/10/2019 T
5/11/2019 1.28
5/12/2019 0.38
5/13/2019 0.88
5/14/2019 0.35
5/15/2019 T
5/16/2019 0.01
5/17/2019 0.01
5/18/2019 0.00
5/19/2019 0.00
5/20/2019 0.01
5/21/2019 0.00
5/22/2019 0.00
5/23/2019 0.00
5/24/2019 0.48
5/25/2019 0.00
5/26/2019 0.03
5/27/2019 0.06
5/28/2019 0.08
5/29/2019 0.01
5/30/2019 0.00
5/31/2019 0.08
6/1/2019 0.00
6/2/2019 0.00
6/3/2019 0.90
6/4/2019 0.00
6/5/2019 0.00
6/6/2019 0.22
6/7/2019 T
6/8/2019 0.00
6/9/2019 0.00
6/10/2019 0.06
6/11/2019 0.09
6/12/2019 0.00
6/13/2019 0.72
6/14/2019 0.57
6/15/2019 0.00
6/16/2019 0.00
6/17/2019 0.01
6/18/2019 0.13
6/19/2019 0.03
6/20/2019 0.02
6/21/2019 0.08
6/22/2019 0.00
6/23/2019 0.00
6/24/2019 0.00
6/25/2019 0.47
6/26/2019 0.00
6/27/2019 0.00
6/28/2019 T
6/29/2019 0.00
6/30/2019 0.17
Day of YearDaily PrcpMultiday Prcp
7/1/2019 0.00
7/2/2019 0.00
7/3/2019 0.18
7/4/2019 0.00
7/5/2019 0.38
7/6/2019 0.00
7/7/2019 0.43
7/8/2019 0.13
7/9/2019 2.86
7/10/2019 0.00
7/11/2019 0.00
7/12/2019 0.23
7/13/2019 0.00
7/14/2019 0.00
7/15/2019 0.00
7/16/2019 0.00
7/17/2019 0.00
7/18/2019 0.32
7/19/2019 0.00
7/20/2019 0.00
7/21/2019 0.00
7/22/2019 T
7/23/2019 0.69
7/24/2019 0.03
7/25/2019 0.00
7/26/2019 0.00
7/27/2019 0.00
7/28/2019 0.00
7/29/2019 0.00
7/30/2019 0.00
7/31/2019 0.00
8/1/2019 0.00
8/2/2019 0.00
8/3/2019 0.00
8/4/2019 2.09
8/5/2019 0.00
8/6/2019 0.00
8/7/2019 1.08
8/8/2019 2.04
8/9/2019 0.00
8/10/2019 0.00
8/11/2019 0.00
8/12/2019 0.00
8/13/2019 **
8/14/2019 **
8/15/2019 **
8/16/2019 **
8/17/2019 **
8/18/2019 **
8/19/2019 **
8/20/2019 **
8/21/2019 **
8/22/2019 1.68
8/23/2019 1.01
8/24/2019 0.08
8/25/2019 0.00
8/26/2019 0.00
8/27/2019 0.00
8/28/2019 T
8/29/2019 0.46
8/30/2019 0.00
8/31/2019 0.00
9/1/2019 0.00
9/2/2019 T
9/3/2019 T
9/4/2019 0.00
9/5/2019 0.00
9/6/2019 0.00
9/7/2019 0.00
9/8/2019 0.00
9/9/2019 T
9/10/2019 0.00
9/11/2019 0.00
9/12/2019 0.00
9/13/2019 0.03
9/14/2019 0.00
9/15/2019 0.00
9/16/2019 0.00
9/17/2019 0.00
9/18/2019 0.00
9/19/2019 0.00
9/20/2019 0.00
9/21/2019 0.00
9/22/2019 0.00
9/23/2019 0.00
9/24/2019 0.01
9/25/2019 0.00
9/26/2019 0.00
9/27/2019 0.00
9/28/2019 0.00
9/29/2019
9/30/2019 0.00



Observation Date Observation Time Precipitation Snowfall Snowfall SWE Snow Depth Snow SWE Notes
3/15/2019 7:00 AM 0.00 0.0 M M M
3/16/2019 7:00 AM 0.00 0.0 M M M
3/17/2019 7:00 AM 0.00 0.0 M M M
3/18/2019 7:00 AM 0.00 M M M M
3/19/2019 7:00 AM 0.00 0.0 M M M
3/20/2019 7:00 AM 0.00 0.0 M M M
3/21/2019 7:00 AM 0.10 M M M M
3/22/2019 7:00 AM 2.57 M M M M Storm total 2.67 inches.
3/23/2019 7:00 AM 0.06 M M M M
3/24/2019 7:00 AM 0.00 0.0 M M M
3/25/2019 7:00 AM 0.00 M M M M
3/26/2019 7:00 AM 0.01 M M M M
3/27/2019 7:00 AM 0.00 M M M M
3/28/2019 7:00 AM 0.00 0.0 M M M
3/29/2019 7:00 AM 0.00 0.0 M M M
3/30/2019 7:00 AM 0.00 0.0 M M M
3/31/2019 7:00 AM 0.01 M M M M Light rain falling at 7:00 am.
4/1/2019 7:00 AM 0.02 M M M M Event total .03"
4/2/2019 7:00 AM T 0.0 0.00 0.0 0.00 A few flakes of unforeast snow. Radar indicated widely scattered light precipitation.
4/3/2019 7:00 AM T M M M M
4/4/2019 7:00 AM 0.00 0.0 M M M
4/5/2019 7:00 AM 0.01 M M M M Light rain at the time of observation.
4/6/2019 7:00 AM 0.13 M M M M Event total 0.14.
4/7/2019 7:00 AM 0.00 M M M M
4/10/2019 7:00 AM 0.00 0.0 M M M
4/11/2019 7:00 AM 0.00 0.0 M M M
4/12/2019 7:00 AM 0.00 0.0 M M M
4/13/2019 7:00 AM 0.52 M M M M
4/14/2019 7:00 AM 0.00 0.0 M M M
4/15/2019 7:00 AM 0.15 M M M M
4/16/2019 7:00 AM 0.00 M M M M
4/17/2019 7:00 AM 0.00 M M M M
4/18/2019 7:00 AM 0.00 0.0 M M M
4/19/2019 7:00 AM 0.00 0.0 M M M
4/20/2019 7:00 AM 0.57 M M M M Light rain falling at the time of observation.
4/21/2019 7:00 AM 0.01 M M M M Event total: 0.58
4/22/2019 7:00 AM 0.00 0.0 M M M
4/23/2019 7:00 AM 0.00 0.0 M M M
4/24/2019 7:00 AM 0.00 0.0 M M M
4/25/2019 7:00 AM 0.00 M M M M
4/26/2019 7:00 AM 0.24 M M M M
4/27/2019 7:00 AM 0.51 M M M M
4/28/2019 7:00 AM 0.04 M M M M
4/29/2019 7:00 AM 0.03 M M M M
4/30/2019 7:00 AM 0.00 0.0 M M M
5/1/2019 7:00 AM 0.15 M M M M
5/2/2019 7:00 AM 0.00 M M M M
5/3/2019 7:00 AM 0.45 M M M M
5/4/2019 7:00 AM 0.28 M M M M
5/5/2019 7:00 AM 0.49 M M M M Light rain at time of observation.
5/6/2019 7:00 AM 1.08 M M M M
5/7/2019 7:00 AM 0.00 0.0 M M M
5/8/2019 7:00 AM 0.00 0.0 M M M
5/9/2019 7:00 AM 0.00 M M M M
5/10/2019 7:00 AM T M M M M
5/11/2019 7:00 AM 1.28 M M M M
5/12/2019 7:00 AM 0.38 M M M M
5/13/2019 7:00 AM 0.88 M M M M
5/14/2019 7:00 AM 0.35 M M M M
5/15/2019 7:00 AM T M M M M
5/16/2019 7:00 AM 0.01 M M M M Showers in the area at time of report.
5/17/2019 7:00 AM 0.01 M M M M
5/18/2019 7:00 AM 0.00 0.0 M M M
5/19/2019 7:00 AM 0.00 M M M M
5/20/2019 7:00 AM 0.01 M M M M
5/21/2019 7:00 AM 0.00 0.0 M M M
5/22/2019 7:00 AM 0.00 0.0 M M M
5/23/2019 7:00 AM 0.00 0.0 M M M
5/24/2019 7:00 AM 0.48 M M M M
5/25/2019 7:00 AM 0.00 0.0 M M M
5/26/2019 7:00 AM 0.03 M M M M
5/27/2019 7:00 AM 0.06 M M M M
5/28/2019 7:00 AM 0.08 M M M M Thundershower in progress at time of observation.
5/29/2019 7:00 AM 0.01 M M M M Storm total .09". Thundershower was underway at the time of yesterday's observation. This .01" accumulation was that last of that event, and occurred just after 7:00 am.
5/30/2019 7:00 AM 0.00 M M M M
5/31/2019 7:00 AM 0.08 M M M M
6/1/2019 7:00 AM 0.00 M M M M
6/2/2019 7:00 AM 0.00 0.0 M M M
6/3/2019 7:00 AM 0.90 M M M M
6/4/2019 7:00 AM 0.00 0.0 M M M
6/5/2019 7:00 AM 0.00 0.0 M M M
6/6/2019 7:00 AM 0.22 M M M M
6/7/2019 7:00 AM T M M M M
6/8/2019 7:00 AM 0.00 0.0 M M M
6/9/2019 7:00 AM 0.00 M M M M
6/10/2019 7:00 AM 0.06 M M M M
6/11/2019 7:00 AM 0.09 M M M M
6/12/2019 7:00 AM 0.00 0.0 M M M
6/13/2019 7:00 AM 0.72 M M M M
6/14/2019 7:00 AM 0.57 M M M M
6/15/2019 7:00 AM 0.00 0.0 M M M
6/16/2019 7:00 AM 0.00 M M M M
6/17/2019 7:00 AM 0.01 M M M M
6/18/2019 7:00 AM 0.13 M M M M
6/19/2019 7:00 AM 0.03 M M M M
6/20/2019 7:00 AM 0.02 M M M M
6/21/2019 7:00 AM 0.08 M M M M
6/22/2019 7:00 AM 0.00 M M M M
6/23/2019 7:00 AM 0.00 M M M M
6/24/2019 7:00 AM 0.00 0.0 M M M
6/25/2019 7:00 AM 0.47 M M M M
6/26/2019 7:00 AM 0.00 M M M M
6/27/2019 7:00 AM 0.00 0.0 M M M
6/28/2019 7:00 AM T M M M M
6/29/2019 7:00 AM 0.00 M M M M
6/30/2019 7:00 AM 0.17 M M M M
7/1/2019 7:00 AM 0.00 M M M M
7/2/2019 7:00 AM 0.00 0.0 M M M
7/3/2019 7:00 AM 0.18 M M M M
7/4/2019 7:00 AM 0.00 0.0 M M M
7/5/2019 7:00 AM 0.38 M M M M
7/6/2019 7:00 AM 0.00 0.0 M M M
7/7/2019 7:00 AM 0.43 M M M M
7/8/2019 7:00 AM 0.13 M M M M Raining at time of observation.
7/9/2019 7:00 AM 2.86 M M M M
7/10/2019 7:00 AM 0.00 0.0 M M M
7/11/2019 7:00 AM 0.00 0.0 M M M
7/12/2019 7:00 AM 0.23 M M M M
7/13/2019 7:00 AM 0.00 M M M M
7/14/2019 7:00 AM 0.00 0.0 M M M
7/15/2019 7:00 AM 0.00 0.0 M M M
7/16/2019 7:00 AM 0.00 M M M M
7/17/2019 7:00 AM 0.00 0.0 M M M
7/18/2019 7:00 AM 0.32 M M M M
7/19/2019 7:00 AM 0.00 0.0 M M M
7/20/2019 7:00 AM 0.00 0.0 M M M
7/21/2019 7:00 AM 0.00 0.0 M M M
7/22/2019 7:00 AM T M M M M
7/23/2019 7:00 AM 0.69 M M M M
7/24/2019 7:00 AM 0.03 M M M M
7/25/2019 7:00 AM 0.00 M M M M
7/26/2019 7:00 AM 0.00 M M M M
7/27/2019 7:00 AM 0.00 M M M M
7/28/2019 7:00 AM 0.00 M M M M
7/29/2019 7:00 AM 0.00 M M M M
7/30/2019 7:00 AM 0.00 M M M M
7/31/2019 7:00 AM 0.00 0.0 M M M
8/1/2019 7:00 AM 0.00 0.0 M M M
8/2/2019 7:00 AM 0.00 0.0 M M M
8/3/2019 7:00 AM 0.00 0.0 M M M
8/4/2019 7:00 AM 2.09 M M M M
8/5/2019 7:00 AM 0.00 0.0 M M M
8/6/2019 7:00 AM 0.00 0.0 M M M
8/7/2019 7:00 AM 1.08 M M M M
8/8/2019 7:00 AM 2.04 M M M M
8/9/2019 7:00 AM 0.00 0.0 M M M
8/10/2019 7:00 AM 0.00 0.0 M M M
8/11/2019 7:00 AM 0.00 M M M M
8/12/2019 7:00 AM 0.00 M M M M
8/23/2019 7:00 AM 1.01 M M M M
8/24/2019 7:00 AM 0.08 M M M M
8/25/2019 7:00 AM 0.00 M M M M
8/26/2019 7:00 AM 0.00 0.0 M M M
8/27/2019 7:00 AM 0.00 M M M M
8/28/2019 7:00 AM T M M M M
8/29/2019 7:00 AM 0.46 M M M M
8/30/2019 7:00 AM 0.00 0.0 M M M
8/31/2019 7:00 AM 0.00 0.0 M M M
9/1/2019 7:00 AM 0.00 M M M M
9/2/2019 7:00 AM T M M M M
9/3/2019 7:00 AM T M M M M
9/4/2019 7:00 AM 0.00 0.0 M M M
9/5/2019 7:00 AM 0.00 0.0 M M M
9/6/2019 7:00 AM 0.00 0.0 M M M
9/7/2019 7:00 AM 0.00 0.0 M M M
9/8/2019 7:00 AM 0.00 0.0 M M M
9/9/2019 7:00 AM T M M M M
9/10/2019 7:00 AM 0.00 0.0 M M M
9/11/2019 7:00 AM 0.00 0.0 M M M
9/12/2019 7:00 AM 0.00 0.0 M M M
9/13/2019 7:00 AM 0.03 M M M M
9/14/2019 7:00 AM 0.00 0.0 M M M
9/15/2019 7:00 AM 0.00 0.0 M M M
9/16/2019 7:00 AM 0.00 0.0 M M M
9/17/2019 7:00 AM 0.00 0.0 M M M
9/18/2019 7:00 AM 0.00 0.0 M M M
9/19/2019 7:00 AM 0.00 0.0 M M M
9/20/2019 7:00 AM 0.00 0.0 M M M
9/21/2019 7:00 AM 0.00 M M M M
9/22/2019 7:00 AM 0.00 M M M M
9/23/2019 7:00 AM 0.00 M M M M
9/24/2019 7:00 AM 0.01 M M M M
9/25/2019 7:00 AM 0.00 0.0 M M M
9/26/2019 7:00 AM 0.00 M M M M
9/27/2019 7:00 AM 0.00 0.0 M M M
9/28/2019 7:00 AM 0.00 0.0 M M M
9/30/2019 7:00 AM 0.00 0.0 M M M



Start Date End Date & Time Duration in Days Precipitation Snow Depth Snow Depth SWE Notes
4/8/2019 4/09/2019 7:00 AM 2 0.08 M M .07" fell before 4:00 pm EDT on the 8th.
8/13/2019 8/22/2019 7:00 AM 10 1.68 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
8/7/2019 2:20 PM Hail was widely spaced in heavy rain. 1/4" Pea Size 1/4" Pea Size 1/4" Pea Size Mixed|Clear Ice|White Ice 3 1min no damage Continuous False After rain Same time as smaller hail 10-20