Station Overview Station Location
Station Number MD-PG-3 Latitude 38.7953
Station Name Oxon Hill 1.1 W Longitude -76.9955
County Prince George's Elevation (ft) 184



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 09 3.61 6.28 31 6.28 31 0.00 0 0 11 6 0.0 0 0
Nov 09 3.32 5.03 30 3.73 26 1.30 4 1 9 2 0.0 0 0
Dec 09 3.23 8.82 33 7.32 31 1.50 2 1 13 0 17.9 4 8
Jan 10 3.00 2.14 31 2.14 31 0.00 0 0 11 4 8.4 3 3
Feb 10 2.68 3.56 28 0.68 22 2.88 6 2 5 1 4.2 2 21
March 10 3.65 4.11 31 4.11 31 0.00 0 0 14 2 0.0 0 0
April 10 3.31 2.25 30 2.25 30 0.00 0 0 7 1 0.0 0 0
May 10 4.17 3.60 36 1.94 27 1.66 9 2 9 3 0.0 0 0
June 10 3.80 2.73 30 2.73 30 0.00 0 0 8 3 0.0 0 0
July 10 3.96 5.64 31 5.64 31 0.00 0 0 9 1 0.0 0 0
Aug 10 3.23 4.39 31 4.39 31 0.00 0 0 10 3 0.0 0 0
Sept 10 3.68 2.89 30 2.55 27 0.34 3 1 4 0 0.0 0 0
Water Year Totals: 41.64" 51.44" 372 days 43.76" 348 7.68" 24 days 7 110 days 26 days 30.5" 9 days 32 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
10/1/2009 0.02
10/2/2009 0.00
10/3/2009 T
10/4/2009 0.00
10/5/2009 0.00
10/6/2009 0.00
10/7/2009 T
10/8/2009 0.00
10/9/2009 T
10/10/2009 0.02
10/11/2009 0.00
10/12/2009 0.00
10/13/2009 0.00
10/14/2009 0.00
10/15/2009 0.13
10/16/2009 0.73
10/17/2009 0.90
10/18/2009 1.29
10/19/2009 T
10/20/2009 0.00
10/21/2009 0.00
10/22/2009 0.00
10/23/2009 0.00
10/24/2009 0.02
10/25/2009 1.03
10/26/2009 0.00
10/27/2009 0.54
10/28/2009 1.58
10/29/2009 T
10/30/2009 T
10/31/2009 0.02
11/1/2009 0.70
11/2/2009 0.13
11/3/2009 0.00
11/4/2009 0.00
11/5/2009 0.00
11/6/2009 0.00
11/7/2009 0.00
11/8/2009 0.00
11/9/2009 0.00
11/10/2009 0.00
11/11/2009 0.14
11/12/2009 1.32
11/13/2009 0.64
11/14/2009 0.34
11/15/2009 T
11/16/2009 0.00
11/17/2009 0.00
11/18/2009 0.00
11/19/2009 T
11/20/2009 0.35
11/21/2009 0.00
11/22/2009 0.00
11/23/2009 **
11/24/2009 **
11/25/2009 **
11/26/2009 1.30
11/27/2009 0.10
11/28/2009 0.01
11/29/2009 0.00
11/30/2009 0.00
12/1/2009 0.31
12/2/2009 0.00
12/3/2009 0.90
12/4/2009 0.00
12/5/2009 0.04
12/6/2009 0.73
12/7/2009 0.00
12/8/2009 0.00
12/9/2009 1.60
12/10/2009 0.04
12/11/2009 0.00
12/12/2009 0.00
12/13/2009 0.03
12/14/2009 0.49
12/15/2009 0.00
12/16/2009 0.00
12/17/2009 0.00
12/18/2009 0.00
12/19/2009 0.50 **
12/20/2009 1.00 1.50
12/21/2009 0.00
12/22/2009 0.00
12/23/2009 0.00
12/24/2009 0.00
12/25/2009 0.00
12/26/2009 1.41
12/27/2009 0.10
12/28/2009 0.00
12/29/2009 0.00
12/30/2009 0.00
12/31/2009 0.17
Day of YearDaily PrcpMultiday Prcp
1/1/2010 0.27
1/2/2010 0.00
1/3/2010 0.00
1/4/2010 0.00
1/5/2010 0.00
1/6/2010 T
1/7/2010 T
1/8/2010 0.06
1/9/2010 0.00
1/10/2010 0.00
1/11/2010 0.00
1/12/2010 T
1/13/2010 0.00
1/14/2010 0.00
1/15/2010 0.00
1/16/2010 0.00
1/17/2010 0.04
1/18/2010 0.69
1/19/2010 0.00
1/20/2010 0.03
1/21/2010 0.05
1/22/2010 0.19
1/23/2010 0.02
1/24/2010 0.00
1/25/2010 0.40
1/26/2010 0.04
1/27/2010 0.00
1/28/2010 0.00
1/29/2010 0.00
1/30/2010 T
1/31/2010 0.35
2/1/2010 0.00
2/2/2010 0.00
2/3/2010 0.33
2/4/2010 0.00
2/5/2010 0.00
2/6/2010 **
2/7/2010 2.18
2/8/2010 0.00
2/9/2010 0.00
2/10/2010 **
2/11/2010 **
2/12/2010 **
2/13/2010 0.70
2/14/2010 0.00
2/15/2010 0.00
2/16/2010 0.06
2/17/2010 0.00
2/18/2010 T
2/19/2010 0.00
2/20/2010 0.00
2/21/2010 0.00
2/22/2010 0.00
2/23/2010 0.24
2/24/2010 0.00
2/25/2010 0.04
2/26/2010 0.00
2/27/2010 0.01
2/28/2010 0.00
3/1/2010 T
3/2/2010 0.00
3/3/2010 0.12
3/4/2010 0.01
3/5/2010 0.00
3/6/2010 0.00
3/7/2010 0.00
3/8/2010 0.00
3/9/2010 0.00
3/10/2010 0.00
3/11/2010 0.00
3/12/2010 0.55
3/13/2010 0.64
3/14/2010 0.44
3/15/2010 0.08
3/16/2010 0.09
3/17/2010 0.00
3/18/2010 0.00
3/19/2010 0.00
3/20/2010 0.00
3/21/2010 0.00
3/22/2010 T
3/23/2010 0.32
3/24/2010 0.01
3/25/2010 0.00
3/26/2010 0.40
3/27/2010 0.11
3/28/2010 0.00
3/29/2010 1.11
3/30/2010 0.22
3/31/2010 0.01
Day of YearDaily PrcpMultiday Prcp
4/1/2010 0.00
4/2/2010 0.00
4/3/2010 0.00
4/4/2010 0.00
4/5/2010 0.00
4/6/2010 0.00
4/7/2010 0.00
4/8/2010 0.00
4/9/2010 1.03
4/10/2010 0.00
4/11/2010 0.00
4/12/2010 0.00
4/13/2010 0.00
4/14/2010 0.15
4/15/2010 0.00
4/16/2010 0.00
4/17/2010 0.01
4/18/2010 0.00
4/19/2010 0.00
4/20/2010 0.00
4/21/2010 T
4/22/2010 0.27
4/23/2010 0.00
4/24/2010 0.00
4/25/2010 0.15
4/26/2010 0.27
4/27/2010 0.37
4/28/2010 0.00
4/29/2010 0.00
4/30/2010 0.00
5/1/2010 0.00
5/2/2010 T
5/3/2010 0.13
5/4/2010 0.05
5/5/2010 0.00
5/6/2010 0.00
5/7/2010 0.00
5/8/2010 0.00
5/9/2010 0.00
5/10/2010 0.00
5/11/2010 0.00
5/12/2010 0.10
5/13/2010 0.01
5/14/2010 0.00
5/15/2010 0.28
5/16/2010 0.00
5/17/2010 0.05
5/18/2010 0.61
5/19/2010 0.24
5/20/2010 T
5/21/2010 0.00
5/22/2010 0.00
5/23/2010 0.47
5/24/2010 T **
5/25/2010 **
5/26/2010 **
5/27/2010 **
5/28/2010 0.83
5/29/2010 0.00
5/30/2010 0.00
5/31/2010 0.00
6/1/2010 0.00
6/2/2010 0.28
6/3/2010 0.00
6/4/2010 0.68
6/5/2010 0.00
6/6/2010 0.00
6/7/2010 0.11
6/8/2010 0.00
6/9/2010 0.00
6/10/2010 0.11
6/11/2010 0.00
6/12/2010 0.00
6/13/2010 0.03
6/14/2010 0.00
6/15/2010 0.42
6/16/2010 T
6/17/2010 0.00
6/18/2010 0.00
6/19/2010 0.00
6/20/2010 0.00
6/21/2010 0.00
6/22/2010 0.00
6/23/2010 0.05
6/24/2010 0.00
6/25/2010 T
6/26/2010 0.00
6/27/2010 0.00
6/28/2010 0.00
6/29/2010 1.05
6/30/2010 T
Day of YearDaily PrcpMultiday Prcp
7/1/2010 0.00
7/2/2010 0.00
7/3/2010 0.00
7/4/2010 0.00
7/5/2010 0.00
7/6/2010 0.00
7/7/2010 0.00
7/8/2010 0.00
7/9/2010 0.00
7/10/2010 0.16
7/11/2010 1.00
7/12/2010 0.00
7/13/2010 1.11
7/14/2010 1.73
7/15/2010 T
7/16/2010 0.00
7/17/2010 0.00
7/18/2010 0.00
7/19/2010 0.01
7/20/2010 0.04
7/21/2010 0.00
7/22/2010 0.02
7/23/2010 0.00
7/24/2010 0.00
7/25/2010 0.00
7/26/2010 0.82
7/27/2010 0.00
7/28/2010 0.00
7/29/2010 0.00
7/30/2010 0.75
7/31/2010 0.00
8/1/2010 0.10
8/2/2010 0.06
8/3/2010 T
8/4/2010 0.01
8/5/2010 0.00
8/6/2010 1.01
8/7/2010 0.00
8/8/2010 0.00
8/9/2010 0.00
8/10/2010 0.00
8/11/2010 0.00
8/12/2010 0.00
8/13/2010 1.90
8/14/2010 T
8/15/2010 0.00
8/16/2010 0.18
8/17/2010 0.00
8/18/2010 0.16
8/19/2010 0.60
8/20/2010 0.00
8/21/2010 0.00
8/22/2010 T
8/23/2010 0.31
8/24/2010 0.06
8/25/2010 0.00
8/26/2010 0.00
8/27/2010 0.00
8/28/2010 0.00
8/29/2010 0.00
8/30/2010 0.00
8/31/2010 0.00
9/1/2010 0.00
9/2/2010 0.00
9/3/2010 0.00
9/4/2010 0.00
9/5/2010 0.00
9/6/2010 0.00
9/7/2010 0.00
9/8/2010 0.00
9/9/2010 0.00
9/10/2010 0.00
9/11/2010 0.00
9/12/2010 0.35
9/13/2010 0.34
9/14/2010 0.00
9/15/2010 0.00
9/16/2010 0.00
9/17/2010 0.08
9/18/2010 0.00
9/19/2010 0.00
9/20/2010 0.00
9/21/2010 0.00
9/22/2010 0.00
9/23/2010 0.00
9/24/2010 0.00
9/25/2010 0.00
9/26/2010 0.00
9/27/2010 **
9/28/2010 **
9/29/2010 0.34
9/30/2010 1.78



Observation Date Observation Time Precipitation Snowfall Snowfall SWE Snow Depth Snow SWE Notes
10/1/2009 7:00 AM 0.02 0.0 M 0.0 M Sprinkles 7:30-8:00 AM, -SHRA afternoon.
10/2/2009 7:00 AM 0.00 0.0 M 0.0 M
10/3/2009 7:00 AM T 0.0 M 0.0 M Occasional -RA last evening.
10/4/2009 7:00 AM 0.00 0.0 M 0.0 M
10/5/2009 7:00 AM 0.00 0.0 M 0.0 M Optical phenomenon: intermittently between 5:00 PM and 6:00 PM Sunday, one or both parhelia visible, often brilliantly colored.
10/6/2009 7:00 AM 0.00 0.0 M 0.0 M
10/7/2009 7:00 AM T 0.0 M 0.0 M Occasional -RA in the predawn.
10/8/2009 7:00 AM 0.00 0.0 M 0.0 M
10/9/2009 7:00 AM T 0.0 M 0.0 M Occasional light rain late last evening.
10/10/2009 7:00 AM 0.02 0.0 M 0.0 M -SHRA overnight. Yesterday was the last day of summer...max temp 84F.
10/11/2009 6:00 AM 0.00 0.0 M 0.0 M Optical phenomena yesterday: at 7:53 AM, right leg of rainbow. At 5:20 PM right parhelion.
10/12/2009 7:00 AM 0.00 0.0 M 0.0 M
10/13/2009 7:00 AM 0.00 0.0 M 0.0 M
10/14/2009 7:00 AM 0.00 0.0 M 0.0 M
10/15/2009 7:30 AM 0.13 0.0 M 0.0 M -RA began yesterday afternoon.
10/16/2009 7:45 AM 0.73 0.0 M 0.0 M -RA and/or -DZ for the past 24 hours.
10/17/2009 7:30 AM 0.90 0.0 M 0.0 M -RA past 24 hours...again.
10/18/2009 7:00 AM 1.29 0.0 M 0.0 M Light to moderate rain ended a short time ago. Finally!
10/19/2009 7:00 AM T 0.0 M 0.0 M Sprinkles mid to late morning.
10/20/2009 7:00 AM 0.00 0.0 M 0.0 M Very light frost. Min temp 38F.
10/21/2009 7:00 AM 0.00 0.0 M 0.0 M
10/22/2009 7:00 AM 0.00 0.0 M 0.0 M
10/23/2009 7:00 AM 0.00 0.0 M 0.0 M
10/24/2009 7:30 AM 0.02 0.0 M 0.0 M Occasional -RA late last eve and predawn.
10/25/2009 7:00 AM 1.03 0.0 M 0.0 M +SHRA mid and late afternoon. No thunder heard.
10/26/2009 7:00 AM 0.00 0.0 M 0.0 M
10/27/2009 7:30 AM 0.54 0.0 M 0.0 M -RA overnight. -DZ at obs time.
10/28/2009 7:00 AM 1.58 0.0 M 0.0 M Moderate to heavy rain overnight. Otherwise -RA/-DZ the past 24 hours.
10/29/2009 7:00 AM T 0.0 M 0.0 M -DZ until about mid morning.
10/30/2009 7:00 AM T 0.0 M 0.0 M -DZ late evening.
10/31/2009 7:00 AM 0.02 0.0 M 0.0 M -DZ overnight; occurring at obs time.
11/1/2009 7:30 AM 0.70 0.0 M 0.0 M -RA starting last evening.
11/2/2009 7:00 AM 0.13 0.0 M 0.0 M -RA until early afternoon, then a trace of -RA 10PM-midnight.
11/3/2009 7:00 AM 0.00 0.0 M 0.0 M
11/4/2009 7:00 AM 0.00 0.0 M 0.0 M
11/5/2009 7:00 AM 0.00 0.0 M 0.0 M
11/6/2009 7:00 AM 0.00 0.0 M 0.0 M -SHRA in the vicinity yesterday afternoon bot no evidence of precip in the gauge.
11/7/2009 7:00 AM 0.00 0.0 M 0.0 M The growing season has ended in Oxon Hill. First freeze of the season, min temp 31F with heavy frost.
11/8/2009 6:00 AM 0.00 0.0 M 0.0 M
11/9/2009 7:00 AM 0.00 0.0 M 0.0 M
11/10/2009 7:00 AM 0.00 0.0 M 0.0 M
11/11/2009 7:00 AM 0.14 0.0 M 0.0 M -RA began last evening.
11/12/2009 7:45 AM 1.32 0.0 M 0.0 M -RA steady for the past 24 hours. Nothing like conditions in SE VA!
11/13/2009 7:30 AM 0.64 0.0 M 0.0 M -RA all day, became intermittent after midnight, and ended around 6 AM.
11/14/2009 7:30 AM 0.34 0.0 M 0.0 M RA/+RA 11 AM-1 PM (0.27) otherwise -RA/-DZ for the past 24 hours. Storm total 2.44 inches, still we're a lot better off than SE VA is, Thanks Be. -DZ at obs time.
11/15/2009 7:00 AM T 0.0 M 0.0 M Occasional -DZ ended around midday.
11/16/2009 7:00 AM 0.00 0.0 M 0.0 M
11/17/2009 7:00 AM 0.00 0.0 M 0.0 M
11/18/2009 6:00 AM 0.00 0.0 M 0.0 M
11/19/2009 7:00 AM T 0.0 M 0.0 M -RA in the predawn.
11/20/2009 7:00 AM 0.35 0.0 M 0.0 M TSRA 10:00-10:30 PM otherwise -RA from midafternoon intermittently through predawn.
11/21/2009 7:00 AM 0.00 0.0 M 0.0 M
11/22/2009 7:00 AM 0.00 0.0 M 0.0 M
11/27/2009 7:45 AM 0.10 0.0 M 0.0 M -RA overnight.
11/28/2009 7:30 AM 0.01 0.0 M 0.0 M -SHRA early afternoon. There were reports in the area of small hail and snow pellets, but none were observed here.
11/29/2009 7:00 AM 0.00 0.0 M 0.0 M
11/30/2009 7:00 AM 0.00 0.0 M 0.0 M
12/1/2009 7:00 AM 0.31 0.0 M 0.0 M -RA morning into early evening Nov 30.
12/2/2009 7:00 AM 0.00 0.0 M 0.0 M
12/3/2009 7:00 AM 0.90 0.0 M 0.0 M Occasional light rain from midday until about 3 AM. Brief +SHRA between 10 PM and 2 AM.
12/4/2009 7:00 AM 0.00 0.0 M 0.0 M
12/5/2009 7:00 AM 0.04 0.0 M 0.0 M -RA started in the predawn.
12/6/2009 6:00 AM 0.73 0.8 M 0.5 M -RA changed to -SN around 10:30 AM. Snowfall amount might have been greater if I'd not been taking the obs during the storm at DCA; the 0.8 inch was measured at 0000EST after I got home.
12/7/2009 7:00 AM 0.00 0.0 M T M
12/8/2009 7:00 AM 0.00 0.0 M 0.0 M
12/9/2009 7:00 AM 1.60 T M 0.0 M -RAPL from 8:00 to 8:30 PM last evening, then light to moderate rain through obs time.
12/10/2009 7:00 AM 0.04 0.0 M 0.0 M -RA ended shortly after yesterday's obs time.
12/11/2009 7:00 AM 0.00 0.0 M 0.0 M Current temp 23F.
12/12/2009 7:00 AM 0.00 0.0 M 0.0 M
12/13/2009 6:00 AM 0.03 0.0 M 0.0 M -RA started a couple hours ago.
12/14/2009 7:00 AM 0.49 0.0 M 0.0 M -RA until about 4 PM. Dense fog moved in around 8PM and is still occurring at obs time. No FZFG; temp 34F.
12/15/2009 7:00 AM 0.00 0.0 M 0.0 M Dense fog until around 11 AM yesterday.
12/16/2009 7:00 AM 0.00 0.0 M 0.0 M
12/17/2009 7:00 AM 0.00 0.0 M 0.0 M
12/18/2009 7:00 AM 0.00 0.0 M 0.0 M
12/19/2009 7:00 AM 0.50 6.0 M 6.0 M See note on the Dec 20 obs.
12/20/2009 7:00 AM 1.00 11.0 M 17.0 M DELAYED REPORT--these are estimated from the total snowfall of 17 inches and the total water equivalent of exactly 1.50 inches. I based it on DCA's snow depths as of 12Z and partitioned the WE accordingly.
12/21/2009 7:00 AM 0.00 0.0 M 15.5 M
12/22/2009 7:00 AM 0.00 0.0 M 14.0 M
12/23/2009 7:00 AM 0.00 0.0 M 12.0 M
12/24/2009 7:00 AM 0.00 0.0 M 11.0 M
12/25/2009 7:00 AM 0.00 0.0 M 10.0 M
12/26/2009 7:00 AM 1.41 0.0 M T M -RA occasionally RA from yesterday afternoon to current obs time. Snow pack all but gone. Dense fog midafternoon yesterday for a couple of hours after the rain began.
12/27/2009 6:00 AM 0.10 0.0 M 0.0 M -RA/-DZ ended in the afternoon. No natural snowpack left.
12/28/2009 6:00 AM 0.00 0.0 M 0.0 M
12/29/2009 7:00 AM 0.00 0.0 M 0.0 M
12/30/2009 7:00 AM 0.00 0.0 M 0.0 M
12/31/2009 7:00 AM 0.17 0.1 M T M -FZRA, occasional -PL. 7 AM temp 31F.
1/1/2010 7:00 AM 0.27 0.0 M 0.0 M -FZRA ended around 8 AM Dec 31, then -RA until 9 AM and again in the afternoon and evening.
1/2/2010 7:00 AM 0.00 0.0 M 0.0 M
1/3/2010 7:00 AM 0.00 0.0 M 0.0 M
1/4/2010 7:00 AM 0.00 0.0 M 0.0 M
1/5/2010 7:00 AM 0.00 0.0 M 0.0 M
1/6/2010 7:00 AM T T M 0.0 M Flurries yesterday morning after obs time.
1/7/2010 7:00 AM T T M 0.0 M Flurries midmorning yesterday.
1/8/2010 7:00 AM 0.06 1.5 0.06 1.5 0.06 -SN overnight.
1/9/2010 7:00 AM 0.00 0.0 M 0.5 M
1/10/2010 7:00 AM 0.00 0.0 M T M
1/11/2010 7:00 AM 0.00 0.0 M 0.0 M
1/12/2010 7:00 AM T T M 0.0 M Flurries last evening.
1/13/2010 7:00 AM 0.00 0.0 M 0.0 M
1/14/2010 7:00 AM 0.00 0.0 M 0.0 M
1/15/2010 7:00 AM 0.00 0.0 M 0.0 M
1/16/2010 7:00 AM 0.00 0.0 M 0.0 M
1/17/2010 7:00 AM 0.04 0.0 M 0.0 M -RA began about 6 AM.
1/18/2010 7:00 AM 0.69 0.0 M 0.0 M -RA occasionally RA until 1 PM then occasional -DZ until late evening.
1/19/2010 7:00 AM 0.00 0.0 M 0.0 M
1/20/2010 7:00 AM 0.03 T M T M -SHRA 8:30-9:30 AM yesterday 0.01; -RAPL 5-6AM then -RA until obs time, 0.02.
1/21/2010 7:00 AM 0.05 0.1 M 0.0 M -RASNPL ended by midmorning.
1/22/2010 7:00 AM 0.19 T M 0.0 M -RAPL at the outset for about 30 minutes, then occasional -RA overnight through obs time.
1/23/2010 7:00 AM 0.02 0.0 M 0.0 M Occasional -RA until midday.
1/24/2010 7:00 AM 0.00 0.0 M 0.0 M
1/25/2010 7:00 AM 0.40 0.0 M 0.0 M Occasional -RA from early afternoon onward, light rain at obs time. Windy starting about 1 AM; plenty of winds moaning in the trees but no damage.
1/26/2010 7:00 AM 0.04 0.0 M 0.0 M Onnasional light rain ended late in the morning; -SHRA 7 - 8 PM, T.
1/27/2010 7:00 AM 0.00 0.0 M 0.0 M
1/28/2010 7:00 AM 0.00 0.0 M 0.0 M
1/29/2010 7:00 AM 0.00 0.0 M 0.0 M
1/30/2010 8:00 AM T T T T T Present wx -SG. Report slightly delayed because I was on the way home from KDCA; snow hadn't started there by 7 AM. This being the Washington, DC, area; I also had to make a run to the store on the way home, for provisions; I may be marooned here for weeks... :-)))
1/31/2010 8:00 AM 0.35 6.8 M 6.0 M -SN, occasionally SN through about 7 PM.
2/1/2010 7:00 AM 0.00 0.0 M 5.0 M
2/2/2010 7:00 AM 0.00 0.0 M 4.0 M
2/3/2010 7:00 AM 0.33 4.1 M 7.0 M -SN last evening and overnight, maybe a few drops of rain at the start.
2/4/2010 7:00 AM 0.00 0.0 M 3.0 M
2/5/2010 7:00 AM 0.00 0.0 M 2.0 M This site will not report for several days after today; I will be on duty at DCA later today, measuring snow with a meter stick overnight perhaps, and I expect that I will be there a while!
2/8/2010 7:00 AM 0.00 0.0 M 21.0 M Back from 48 hours at DCA. Site MD-PG-24 will not operate UFN.
2/9/2010 7:00 AM 0.00 0.0 M 19.0 M
2/14/2010 7:00 AM 0.00 0.0 M 21.0 M MD-PG-3 back in operation after I got back from 5 days at DCA yesterday. MD-PG-24 will still be out UFN.
2/15/2010 7:00 AM 0.00 0.0 M 20.0 M
2/16/2010 7:00 AM 0.06 0.1 M 19.0 M Occasional -SN yesterday afternoon and evening.
2/17/2010 7:00 AM 0.00 0.0 M 17.5 M
2/18/2010 7:00 AM T T M 17.0 M Flurries early afternoon. Station MD-PG-24 will continue to be out UFN.
2/19/2010 7:00 AM 0.00 0.0 M 14.5 M
2/20/2010 7:00 AM 0.00 0.0 M 12.0 M
2/21/2010 7:00 AM 0.00 0.0 M 10.0 M
2/22/2010 7:00 AM 0.00 0.0 M 8.5 M
2/23/2010 7:00 AM 0.24 0.0 M 7.0 M -RA in the afternoon and evening.
2/24/2010 7:00 AM 0.00 0.0 M 5.0 M
2/25/2010 8:00 AM 0.04 T M 2.0 M -RA late in the evening, then -RASN in the predawn.
2/26/2010 8:00 AM 0.00 0.0 M 2.0 M Snow depth 0-4 inches.
2/27/2010 8:00 AM 0.01 0.0 M 1.0 M -SN in the predawn. Snow depth 0-2 inches.
2/28/2010 7:00 AM 0.00 0.0 M T M
3/1/2010 7:00 AM T 0.0 M 0.0 M -SHRA in the evening. A few small protected areas of snow cover 1-2 inches deep, and still some snow piles 2-3 feet deep along the curbs; but officially, snow cover is finally zero!
3/2/2010 7:00 AM 0.00 0.0 M 0.0 M
3/3/2010 7:00 AM 0.12 T M 0.0 M -RA, occasionally mixed with a few wet flakes.
3/4/2010 7:00 AM 0.01 T M 0.0 M Very light -RA most of the day; few wet flakes after 0700 yesterday.
3/5/2010 7:00 AM 0.00 0.0 M 0.0 M
3/6/2010 7:00 AM 0.00 0.0 M 0.0 M
3/7/2010 7:00 AM 0.00 0.0 M 0.0 M
3/8/2010 7:00 AM 0.00 0.0 M 0.0 M
3/9/2010 7:00 AM 0.00 0.0 M 0.0 M
3/10/2010 7:00 AM 0.00 0.0 M 0.0 M
3/11/2010 7:00 AM 0.00 0.0 M 0.0 M
3/12/2010 7:45 AM 0.55 0.0 M 0.0 M -RA occasionally RA overnight.
3/13/2010 7:45 AM 0.64 0.0 M 0.0 M -RA, periods of RA overnight. -DZ at obs time.
3/14/2010 7:45 AM 0.44 0.0 M 0.0 M -RA ended around 7 PM; -SHRA in the predawn today.
3/15/2010 7:00 AM 0.08 0.0 M 0.0 M -RA 1-9PM, then -RA/-DZ this morning.
3/16/2010 7:00 AM 0.09 0.0 M 0.0 M Intermittent -RADZ through late evening.
3/17/2010 7:00 AM 0.00 0.0 M 0.0 M
3/18/2010 7:00 AM 0.00 0.0 M 0.0 M
3/19/2010 7:00 AM 0.00 0.0 M 0.0 M
3/20/2010 7:00 AM 0.00 0.0 M 0.0 M
3/21/2010 7:00 AM 0.00 0.0 M 0.0 M
3/22/2010 7:00 AM T 0.0 M 0.0 M -SHRA in the predawn.
3/23/2010 7:00 AM 0.32 0.0 M 0.0 M TSRA 1155-1230; -TSRA 1500-1530. Otherwise light showers in the late morning and early afternoon.
3/24/2010 7:00 AM 0.01 0.0 M 0.0 M Occasional -RA in the afternoon.
3/25/2010 7:00 AM 0.00 0.0 M 0.0 M
3/26/2010 7:30 AM 0.40 0.0 M 0.0 M Occasional -RA started last evening. Not raining at obs time.
3/27/2010 7:00 AM 0.11 0.0 M 0.0 M Occasional -RA midmorning to midday.
3/28/2010 7:00 AM 0.00 0.0 M 0.0 M
3/29/2010 7:00 AM 1.11 0.0 M 0.0 M Frequent heavy showers 8PM-midnight, otherwise light rain through the night. -SHRA at obs time.
3/30/2010 7:00 AM 0.22 0.0 M 0.0 M -RA until midafternoon then intermittent from midnight to current time.
3/31/2010 7:00 AM 0.01 0.0 M 0.0 M Occasional -RA 8-9 AM and overnight.
4/1/2010 7:00 AM 0.00 0.0 M 0.0 M
4/2/2010 7:00 AM 0.00 0.0 M 0.0 M
4/3/2010 7:00 AM 0.00 0.0 M 0.0 M
4/4/2010 6:00 AM 0.00 0.0 M 0.0 M
4/5/2010 7:00 AM 0.00 0.0 M 0.0 M
4/6/2010 7:00 AM 0.00 0.0 M 0.0 M
4/7/2010 7:00 AM 0.00 0.0 M 0.0 M Spring is over?? Max yesterday 92F, overnight low this morning 65F...feels like June. But I know changes are coming.
4/8/2010 7:00 AM 0.00 0.0 M 0.0 M
4/9/2010 7:45 AM 1.03 0.0 M 0.0 M +TSRA with strong winds but not a severe thunderstorm 7:50-8:10 PM; only infrequent LTGICCC. Otherwise -SHRA from 7 PM through about 4 AM today. No wind damage in my neighborhood.
4/10/2010 7:00 AM 0.00 0.0 M 0.0 M
4/11/2010 7:00 AM 0.00 0.0 M 0.0 M
4/12/2010 7:00 AM 0.00 0.0 M 0.0 M
4/13/2010 6:00 AM 0.00 0.0 M 0.0 M
4/14/2010 7:00 AM 0.15 0.0 M 0.0 M Occasional -RA during the day and early evening.
4/15/2010 7:00 AM 0.00 0.0 M 0.0 M
4/16/2010 7:00 AM 0.00 0.0 M 0.0 M
4/17/2010 6:00 AM 0.01 0.0 M 0.0 M -SHRA late afternoon and eve; strong gusty winds with some showers.
4/18/2010 7:00 AM 0.00 0.0 M 0.0 M
4/19/2010 7:00 AM 0.00 0.0 M 0.0 M
4/20/2010 7:00 AM 0.00 0.0 M 0.0 M
4/21/2010 7:00 AM T 0.0 M 0.0 M Sprinkles around 6 AM, based on radar data.
4/22/2010 7:45 AM 0.27 0.0 M 0.0 M -RA during the day.
4/23/2010 7:00 AM 0.00 0.0 M 0.0 M
4/24/2010 7:00 AM 0.00 0.0 M 0.0 M
4/25/2010 7:15 AM 0.15 0.0 M 0.0 M -RA intermittent starting last evening.
4/26/2010 7:00 AM 0.27 0.0 M 0.0 M +TSRA 2350-0020EDT otherwise -SHRA into the early morning.
4/27/2010 7:00 AM 0.37 0.0 M 0.0 M -RA 0900-1200 and 1600-0100; -TSRA 1700-1720; -RA 0500-0630.
4/28/2010 7:00 AM 0.00 0.0 M 0.0 M
4/29/2010 7:00 AM 0.00 0.0 M 0.0 M
4/30/2010 7:00 AM 0.00 0.0 M 0.0 M
5/1/2010 7:00 AM 0.00 0.0 M 0.0 M
5/2/2010 7:00 AM T 0.0 M 0.0 M A trace of rain in the predawn.
5/3/2010 7:00 AM 0.13 0.0 M 0.0 M -RA started earlier this morning.
5/4/2010 7:00 AM 0.05 0.0 M 0.0 M -SHRA until midmorning.
5/5/2010 7:00 AM 0.00 0.0 M 0.0 M
5/6/2010 7:00 AM 0.00 0.0 M 0.0 M
5/7/2010 7:00 AM 0.00 0.0 M 0.0 M
5/8/2010 7:00 AM 0.00 0.0 M 0.0 M Optical phenomena: at 6:57PM yesterday, upper portions of 22-deg halo and parhelia.
5/9/2010 6:00 AM 0.00 0.0 M 0.0 M
5/10/2010 7:00 AM 0.00 0.0 M 0.0 M
5/11/2010 7:00 AM 0.00 0.0 M 0.0 M
5/12/2010 7:00 AM 0.10 0.0 M 0.0 M Occasional -RA much of day.
5/13/2010 7:00 AM 0.01 0.0 M 0.0 M Intermittent -RA in the afternoon and evening; -TSRA 1731-1746.
5/14/2010 7:00 AM 0.00 0.0 M 0.0 M
5/15/2010 7:00 AM 0.28 0.0 M 0.0 M -TSRA 1850-1910, 0.04; +TSRA 1959-2034 0.24. No severe weather in this area; superdupercell severe thunderstorm to my SE with hail to golfball size and radar indications of tornadic activity...but nothing like that here. Optical phenomenon: 1850, rainbow in sunshower.
5/16/2010 7:00 AM 0.00 0.0 M 0.0 M
5/17/2010 7:00 AM 0.05 0.0 M 0.0 M -RA started in the predawn.
5/18/2010 7:00 AM 0.61 0.0 M 0.0 M -RA all day, tapered to -DZ after about 11 PM. -DZ at obs time.
5/19/2010 7:00 AM 0.24 0.0 M 0.0 M -RA until late morning.
5/20/2010 7:00 AM T 0.0 M 0.0 M Sprinkles around 10 PM.
5/21/2010 7:00 AM 0.00 0.0 M 0.0 M
5/22/2010 7:00 AM 0.00 0.0 M 0.0 M
5/23/2010 7:45 AM 0.47 0.0 M 0.0 M -SHRA off and on last evening and overnight.
5/24/2010 7:30 AM T 0.0 M 0.0 M -SHRA late yesterday afternoon; very light rain at obs time. Is that a tropical system brewing off the SE US already?!
5/29/2010 7:00 AM 0.00 0.0 0.00 0.0 M
5/30/2010 7:00 AM 0.00 0.0 M 0.0 M
5/31/2010 7:00 AM 0.00 0.0 M 0.0 M
6/1/2010 7:00 AM 0.00 0.0 M 0.0 M
6/2/2010 7:00 AM 0.28 0.0 M 0.0 M +TSRA 1410-1435.
6/3/2010 7:00 AM 0.00 0.0 M 0.0 M
6/4/2010 7:00 AM 0.68 0.0 M 0.0 M +TSRA 1730-1815.
6/5/2010 7:00 AM 0.00 0.0 M 0.0 M
6/6/2010 7:00 AM 0.00 0.0 M 0.0 M
6/7/2010 8:00 AM 0.11 0.0 M 0.0 M Weak TSRA 4:03-4:30 PM.
6/8/2010 7:00 AM 0.00 0.0 M 0.0 M
6/9/2010 7:00 AM 0.00 0.0 M 0.0 M
6/10/2010 7:00 AM 0.11 0.0 M 0.0 M -RA mid morning intermittently until mid afternoon. Brief SHRA 4-5 AM, 0.07.
6/11/2010 7:00 AM 0.00 0.0 M 0.0 M
6/12/2010 7:00 AM 0.00 0.0 M 0.0 M
6/13/2010 7:00 AM 0.03 0.0 M 0.0 M Weak -TSRA last evening.
6/14/2010 7:00 AM 0.00 0.0 M 0.0 M
6/15/2010 7:00 AM 0.42 0.0 M 0.0 M +SHRA 1845-1900, 0.26; +SHRA 2030-2100, 0.16.
6/16/2010 7:00 AM T 0.0 M 0.0 M -SHRA in the eve, time unknown.
6/17/2010 7:00 AM 0.00 0.0 M M M
6/18/2010 7:00 AM 0.00 0.0 M M M
6/19/2010 7:00 AM 0.00 0.0 M M M
6/20/2010 7:00 AM 0.00 0.0 M M M
6/21/2010 7:00 AM 0.00 0.0 M M M
6/22/2010 7:00 AM 0.00 0.0 M M M
6/23/2010 7:00 AM 0.05 0.0 M 0.0 M Weak -TSRA 8-9 PM. Charles County was hit hard.
6/24/2010 7:00 AM 0.00 0.0 M 0.0 M
6/25/2010 7:00 AM T 0.0 M 0.0 M Sprinkles late in the afternoon. Approaching thunderstorms fell apart as they reached the area.
6/26/2010 7:00 AM 0.00 0.0 M 0.0 M
6/27/2010 7:00 AM 0.00 0.0 M 0.0 M
6/28/2010 7:00 AM 0.00 0.0 M 0.0 M
6/29/2010 7:00 AM 1.05 0.0 M 0.0 M +TSRA between 3:00 PM and about 3:50 PM, not severe. Gust-front winds estimated to 40 mph at storm's outset.
6/30/2010 7:00 AM T 0.0 M 0.0 M Surprise -SHRA around 3 AM.
7/1/2010 7:00 AM 0.00 0.0 M 0.0 M
7/2/2010 7:00 AM 0.00 0.0 M 0.0 M
7/3/2010 7:00 AM 0.00 0.0 M 0.0 M
7/4/2010 7:00 AM 0.00 0.0 M 0.0 M
7/5/2010 7:00 AM 0.00 0.0 M 0.0 M
7/6/2010 7:00 AM 0.00 0.0 M 0.0 M
7/7/2010 7:00 AM 0.00 0.0 M 0.0 M
7/8/2010 7:00 AM 0.00 0.0 M 0.0 M
7/9/2010 7:00 AM 0.00 0.0 M 0.0 M
7/10/2010 7:00 AM 0.16 0.0 M 0.0 M -RA started overnight.
7/11/2010 7:00 AM 1.00 0.0 M 0.0 M -RA/RA into early afternoon. Storm total 1.16 inches. Just what was needed to end a dry spell.
7/12/2010 7:00 AM 0.00 0.0 M 0.0 M
7/13/2010 7:00 AM 1.11 0.0 M 0.0 M +TSRA 2:30-2:50 PM with 0.38 inch precip and damaging winds that knocked down an 8-inch tree branch about 3 blocks away. Otherwise -SHRA/TSRA through early evening, then TSRA 10:00-11:00 PM and 1:00-2:00 AM today.
7/14/2010 7:00 AM 1.73 0.0 M 0.0 M +TSRA 7-10PM 0.51, +TSRA midnight-2AM 1.22, neither storm severe.
7/15/2010 7:00 AM T 0.0 M 0.0 M -RA.
7/16/2010 7:00 AM 0.00 0.0 M 0.0 M
7/17/2010 7:00 AM 0.00 0.0 M 0.0 M TSRA went by several miles to the N around 1 AM; no rain here.
7/18/2010 7:00 AM 0.00 0.0 M 0.0 M
7/19/2010 7:00 AM 0.01 0.0 M 0.0 M -TSRA went mostly by to the N late last eve.
7/20/2010 7:00 AM 0.04 0.0 M 0.0 M -SHRA around midday, 0.01. -TSRA in the eve, 0.03.
7/21/2010 7:00 AM 0.00 0.0 M M M
7/22/2010 7:00 AM 0.02 M M M M
7/23/2010 7:00 AM 0.00 0.0 M M M
7/24/2010 7:00 AM 0.00 0.0 M M M
7/25/2010 7:00 AM 0.00 0.0 M 0.0 M
7/26/2010 7:00 AM 0.82 0.0 M 0.0 M +TSRA 3:45-4:30 PM, not severe. Estimated winds to 40 mph based on movement of large trees. The Oxon Hill area was spared the damaging winds that hit so many other areas.
7/27/2010 6:00 AM 0.00 0.0 M 0.0 M
7/28/2010 7:00 AM 0.00 0.0 M 0.0 M
7/29/2010 7:00 AM 0.00 0.0 M 0.0 M
7/30/2010 7:00 AM 0.75 0.0 M 0.0 M Non-severe +TSRA in the afternoon had the 0.75 inch of rain. -SHRA around 8 PM, T.
7/31/2010 7:00 AM 0.00 0.0 M 0.0 M
8/1/2010 7:00 AM 0.10 0.0 M 0.0 M -RA in the predawn.
8/2/2010 7:00 AM 0.06 0.0 M 0.0 M -RA 1-2 PM 0.01; -SHRA from about 4 AM today, 0.05.
8/3/2010 7:00 AM T 0.0 M 0.0 M -RA ended around 8 AM.
8/4/2010 7:00 AM 0.01 0.0 M 0.0 M Light showers 4-5 PM and 5-6 AM.
8/5/2010 7:00 AM 0.00 0.0 M 0.0 M Dissipating squall line passed through around 8:30 PM yesterday but didn't even have a drop of rain left in it.
8/6/2010 6:30 AM 1.01 0.0 M 0.0 M From the Southlawn section, near Oxon Hill High School... Tree down on front lawn at 719 Crawford Street. Top 20-30 ft of large sycamore tree at 721 Crawford Street (my residence) was downed. Trees and wires down at corner of Crawford Street and Elkins Avenue. Large tree downed on Furness Avenue. Numerous other trees broken off or uprooted within about a 5-block radius of 721 Crawford Street It appeared that the strong winds blew from the N or NW, and all the trees that were downed fell in such a way as to avoid falling onto houses. Only scattered minor shingle damage on houses. Power went out around 4 PM and was still out throughout Oxon Hill as of 9 PM. It appears that the winds were straight-line and from the N or NW. By far the worst storm in all the 36 years I’ve lived at 721 Crawford...even worse than Hurricane Isabel. 0.85 inch between 3:45-4:15PM, though with the high winds (estimated 70-80 mph), I wonder how much more would have entered the gauge if it was parallel to the ground ;-)) Only intermittent grumbly thunderstorms 4:15-7:45 PM.
8/7/2010 7:00 AM 0.00 0.0 M 0.0 M Area is cleaning up after the extremely severe thunderstorm of Aug 5.
8/8/2010 7:00 AM 0.00 0.0 M 0.0 M
8/9/2010 7:00 AM 0.00 0.0 M 0.0 M
8/10/2010 7:00 AM 0.00 0.0 M 0.0 M
8/11/2010 7:00 AM 0.00 0.0 M 0.0 M
8/12/2010 7:00 AM 0.00 0.0 M 0.0 M Delayed due to computer problems and incoming thunderstorms.
8/13/2010 7:00 AM 1.90 0.0 M 0.0 M +TSRA 0745-0820, 1.64 inches. -TSRA 1600-2000, 0.16 inch. -RADZ 0500 to present time, 0.10 inch.
8/14/2010 7:00 AM T 0.0 M 0.0 M Spotty -DZ until mid morning.
8/15/2010 7:00 AM 0.00 0.0 M 0.0 M
8/16/2010 7:00 AM 0.18 0.0 M 0.0 M -SHRA.
8/17/2010 7:00 AM 0.00 0.0 M 0.0 M
8/18/2010 7:00 AM 0.16 0.0 M 0.0 M -TSRA 3:00-4:00 AM otherwise -RA.
8/19/2010 7:30 AM 0.60 0.0 M 0.0 M Occasional -RA until evening.
8/20/2010 7:00 AM 0.00 0.0 M 0.0 M
8/21/2010 7:00 AM 0.00 0.0 M 0.0 M
8/22/2010 7:00 AM T 0.0 M 0.0 M -SHRA in the evening.
8/23/2010 7:00 AM 0.31 0.0 M 0.0 M Non-severe +TSRA sometime between 3 and 4 PM.
8/24/2010 7:00 AM 0.06 0.0 M 0.0 M -SHRA overnight.
8/25/2010 7:00 AM 0.00 0.0 M 0.0 M
8/26/2010 7:00 AM 0.00 0.0 M 0.0 M
8/27/2010 7:00 AM 0.00 0.0 M 0.0 M
8/28/2010 7:00 AM 0.00 0.0 M 0.0 M
8/29/2010 7:00 AM 0.00 0.0 M 0.0 M
8/30/2010 7:00 AM 0.00 0.0 M 0.0 M
8/31/2010 7:00 AM 0.00 0.0 M 0.0 M
9/1/2010 7:00 AM 0.00 0.0 M 0.0 M
9/2/2010 7:00 AM 0.00 0.0 M 0.0 M
9/3/2010 7:00 AM 0.00 0.0 M 0.0 M Hurricane Earl passing SE VA. Just cloudy skies is all we may get.
9/4/2010 7:00 AM 0.00 0.0 M 0.0 M
9/5/2010 7:00 AM 0.00 0.0 M 0.0 M
9/6/2010 7:00 AM 0.00 0.0 M 0.0 M
9/7/2010 7:00 AM 0.00 0.0 M 0.0 M
9/8/2010 7:00 AM 0.00 0.0 M 0.0 M
9/9/2010 7:00 AM 0.00 0.0 M 0.0 M
9/10/2010 7:00 AM 0.00 0.0 M 0.0 M
9/11/2010 7:00 AM 0.00 0.0 M 0.0 M
9/12/2010 6:00 AM 0.35 0.0 M 0.0 M -RA/SHRA.
9/13/2010 7:00 AM 0.34 0.0 M 0.0 M -RA ended in the afternoon.
9/14/2010 7:00 AM 0.00 0.0 M 0.0 M
9/15/2010 7:00 AM 0.00 0.0 M 0.0 M
9/16/2010 7:00 AM 0.00 0.0 M 0.0 M
9/17/2010 7:00 AM 0.08 0.0 M 0.0 M -SHRA 4:00-8:00 PM and midnight to 2:00 AM.
9/18/2010 7:00 AM 0.00 0.0 M 0.0 M
9/19/2010 7:00 AM 0.00 0.0 M 0.0 M
9/20/2010 7:00 AM 0.00 0.0 M 0.0 M
9/21/2010 7:00 AM 0.00 0.0 M 0.0 M
9/22/2010 7:00 AM 0.00 0.0 M 0.0 M
9/23/2010 7:00 AM 0.00 0.0 M 0.0 M
9/24/2010 7:00 AM 0.00 0.0 M 0.0 M
9/25/2010 7:00 AM 0.00 0.0 M 0.0 M
9/26/2010 7:00 AM 0.00 0.0 M 0.0 M
9/30/2010 8:00 AM 1.78 0.0 M 0.0 M Tropical-like rain. -RA at obs time.



Start Date End Date & Time Duration in Days Precipitation Snow Depth Snow Depth SWE Notes
11/23/2009 11/26/2009 7:00 AM 4 1.30 0.0 M
12/19/2009 12/20/2009 7:00 AM 2 1.50 17.0 M The Great Snow of December 2009. I was on duty at KDCA from 2130 on the eve of the 18th to 0700 20th. KDCA set a December record for Washington, DC, for a calendar day's snowfall with 15.0 inches on the 19th, also a new month's snowfall total with 16.4 inches storm total, plus 0.2 inches earlier in the month. My total precip of 1.50 inches was measured late morning of Sunday the 20th. The 17.0 inches was measured just after the storm ended by a reliable neighbor. 15.5 inches on the ground this morning.
2/6/2010 2/07/2010 12:00 AM 2 2.18 21.0 M Estimated 19.0 inches snowfall Feb 5-6. I was at DCA during this storm.
2/10/2010 2/13/2010 12:00 AM 4 0.70 M M Estimated 10.0 inches snowfall Feb 9-10; very wind-driven. I was at DCA Feb 9-13.
5/24/2010 5/28/2010 7:00 AM 5 0.83 M M
5/25/2010 5/28/2010 7:00 AM 4 0.83 M M
9/27/2010 9/29/2010 7:00 AM 3 0.34 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