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 10 3.61 6.84 31 6.84 31 0.00 0 0 11 0 0.0 0 0
Nov 10 3.32 2.18 30 2.18 30 0.00 0 0 6 2 0.0 0 0
Dec 10 3.23 2.10 31 2.10 31 0.00 0 0 6 3 2.4 4 4
Jan 11 3.00 2.72 31 2.72 31 0.00 0 0 10 1 10.6 7 6
Feb 11 2.68 1.58 28 1.58 28 0.00 0 0 10 2 1.0 2 5
March 11 3.65 5.81 31 5.81 31 0.00 0 0 13 0 0.3 1 0
April 11 3.31 5.71 30 5.71 30 0.00 0 0 15 5 0.0 0 0
May 11 4.17 1.98 31 1.98 31 0.00 0 0 12 5 0.0 0 0
June 11 3.80 2.84 30 2.84 30 0.00 0 0 11 4 0.0 0 0
July 11 3.96 3.50 31 3.50 31 0.00 0 0 8 1 0.0 0 0
Aug 11 3.23 9.86 31 9.86 31 0.00 0 0 13 3 0.0 0 0
Sept 11 3.68 11.23 30 11.23 30 0.00 0 0 15 2 0.0 0 0
Water Year Totals: 41.64" 56.35" 365 days 56.35" 365 0.00" 0 days 0 130 days 28 days 14.3" 14 days 15 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
10/1/2010 3.56
10/2/2010 0.00
10/3/2010 0.00
10/4/2010 0.56
10/5/2010 0.21
10/6/2010 0.01
10/7/2010 0.02
10/8/2010 0.00
10/9/2010 0.00
10/10/2010 0.00
10/11/2010 0.00
10/12/2010 0.00
10/13/2010 0.00
10/14/2010 0.02
10/15/2010 1.31
10/16/2010 0.00
10/17/2010 0.00
10/18/2010 0.00
10/19/2010 0.01
10/20/2010 0.00
10/21/2010 0.03
10/22/2010 0.00
10/23/2010 0.00
10/24/2010 0.00
10/25/2010 0.00
10/26/2010 0.00
10/27/2010 0.37
10/28/2010 0.74
10/29/2010 0.00
10/30/2010 0.00
10/31/2010 0.00
11/1/2010 0.00
11/2/2010 0.00
11/3/2010 0.00
11/4/2010 0.63
11/5/2010 0.87
11/6/2010 0.00
11/7/2010 0.00
11/8/2010 0.00
11/9/2010 0.00
11/10/2010 0.00
11/11/2010 0.00
11/12/2010 0.00
11/13/2010 0.00
11/14/2010 0.00
11/15/2010 0.00
11/16/2010 0.23
11/17/2010 0.39
11/18/2010 0.00
11/19/2010 0.00
11/20/2010 0.00
11/21/2010 0.00
11/22/2010 0.00
11/23/2010 0.00
11/24/2010 T
11/25/2010 0.05
11/26/2010 0.01
11/27/2010 0.00
11/28/2010 0.00
11/29/2010 0.00
11/30/2010 T
12/1/2010 0.51
12/2/2010 0.52
12/3/2010 0.00
12/4/2010 0.00
12/5/2010 0.00
12/6/2010 0.00
12/7/2010 0.00
12/8/2010 0.00
12/9/2010 0.00
12/10/2010 0.00
12/11/2010 0.00
12/12/2010 0.38
12/13/2010 0.49
12/14/2010 T
12/15/2010 0.00
12/16/2010 0.00
12/17/2010 0.16
12/18/2010 0.00
12/19/2010 0.00
12/20/2010 0.00
12/21/2010 0.00
12/22/2010 0.00
12/23/2010 T
12/24/2010 0.00
12/25/2010 0.00
12/26/2010 T
12/27/2010 0.04
12/28/2010 0.00
12/29/2010 0.00
12/30/2010 0.00
12/31/2010 0.00
Day of YearDaily PrcpMultiday Prcp
1/1/2011 0.00
1/2/2011 0.02
1/3/2011 0.13
1/4/2011 0.00
1/5/2011 0.00
1/6/2011 0.00
1/7/2011 0.00
1/8/2011 T
1/9/2011 0.04
1/10/2011 0.00
1/11/2011 0.00
1/12/2011 0.10
1/13/2011 0.00
1/14/2011 0.00
1/15/2011 0.00
1/16/2011 0.00
1/17/2011 0.00
1/18/2011 0.43
1/19/2011 0.02
1/20/2011 0.00
1/21/2011 0.03
1/22/2011 0.00
1/23/2011 0.00
1/24/2011 0.00
1/25/2011 0.00
1/26/2011 0.22
1/27/2011 1.66
1/28/2011 0.00
1/29/2011 0.07
1/30/2011 0.00
1/31/2011 0.00
2/1/2011 T
2/2/2011 0.78
2/3/2011 0.01
2/4/2011 0.00
2/5/2011 0.02
2/6/2011 0.12
2/7/2011 0.00
2/8/2011 0.02
2/9/2011 0.00
2/10/2011 0.04
2/11/2011 0.00
2/12/2011 0.00
2/13/2011 0.00
2/14/2011 0.00
2/15/2011 0.00
2/16/2011 0.00
2/17/2011 0.00
2/18/2011 0.00
2/19/2011 0.00
2/20/2011 0.00
2/21/2011 T
2/22/2011 0.13
2/23/2011 0.00
2/24/2011 0.00
2/25/2011 0.18
2/26/2011 0.16
2/27/2011 0.00
2/28/2011 0.12
3/1/2011 0.58
3/2/2011 0.00
3/3/2011 0.00
3/4/2011 0.00
3/5/2011 0.00
3/6/2011 0.20
3/7/2011 1.41
3/8/2011 0.00
3/9/2011 0.00
3/10/2011 0.59
3/11/2011 1.33
3/12/2011 0.00
3/13/2011 0.00
3/14/2011 0.00
3/15/2011 0.00
3/16/2011 0.67
3/17/2011 0.00
3/18/2011 0.00
3/19/2011 0.00
3/20/2011 0.00
3/21/2011 0.01
3/22/2011 0.24
3/23/2011 0.01
3/24/2011 0.48
3/25/2011 0.09
3/26/2011 0.00
3/27/2011 0.03
3/28/2011 0.00
3/29/2011 0.00
3/30/2011 0.00
3/31/2011 0.17
Day of YearDaily PrcpMultiday Prcp
4/1/2011 0.12
4/2/2011 T
4/3/2011 0.13
4/4/2011 T
4/5/2011 0.26
4/6/2011 0.33
4/7/2011 0.00
4/8/2011 0.03
4/9/2011 0.42
4/10/2011 T
4/11/2011 T
4/12/2011 0.00
4/13/2011 0.33
4/14/2011 0.09
4/15/2011 0.00
4/16/2011 T
4/17/2011 0.85
4/18/2011 0.00
4/19/2011 0.00
4/20/2011 0.03
4/21/2011 0.00
4/22/2011 0.00
4/23/2011 0.47
4/24/2011 0.01
4/25/2011 0.91
4/26/2011 0.00
4/27/2011 0.00
4/28/2011 1.39
4/29/2011 0.34
4/30/2011 0.00
5/1/2011 0.00
5/2/2011 0.03
5/3/2011 0.00
5/4/2011 0.47
5/5/2011 0.29
5/6/2011 0.00
5/7/2011 0.00
5/8/2011 0.00
5/9/2011 0.01
5/10/2011 0.00
5/11/2011 T
5/12/2011 0.00
5/13/2011 T
5/14/2011 T
5/15/2011 0.57
5/16/2011 0.00
5/17/2011 0.01
5/18/2011 0.05
5/19/2011 0.12
5/20/2011 0.17
5/21/2011 T
5/22/2011 0.00
5/23/2011 0.07
5/24/2011 T
5/25/2011 0.17
5/26/2011 0.00
5/27/2011 0.00
5/28/2011 0.02
5/29/2011 0.00
5/30/2011 0.00
5/31/2011 0.00
6/1/2011 0.00
6/2/2011 0.04
6/3/2011 0.00
6/4/2011 0.00
6/5/2011 T
6/6/2011 0.00
6/7/2011 0.00
6/8/2011 0.00
6/9/2011 0.00
6/10/2011 0.09
6/11/2011 0.00
6/12/2011 0.82
6/13/2011 0.03
6/14/2011 0.00
6/15/2011 T
6/16/2011 0.00
6/17/2011 1.24
6/18/2011 0.34
6/19/2011 0.01
6/20/2011 0.17
6/21/2011 0.07
6/22/2011 0.01
6/23/2011 0.00
6/24/2011 T
6/25/2011 0.00
6/26/2011 0.00
6/27/2011 0.02
6/28/2011 0.00
6/29/2011 T
6/30/2011 0.00
Day of YearDaily PrcpMultiday Prcp
7/1/2011 0.00
7/2/2011 0.00
7/3/2011 0.46
7/4/2011 0.32
7/5/2011 0.01
7/6/2011 0.00
7/7/2011 0.04
7/8/2011 0.00
7/9/2011 1.14
7/10/2011 0.00
7/11/2011 0.00
7/12/2011 T
7/13/2011 0.00
7/14/2011 0.98
7/15/2011 0.00
7/16/2011 0.00
7/17/2011 0.00
7/18/2011 0.00
7/19/2011 0.00
7/20/2011 0.00
7/21/2011 0.00
7/22/2011 0.00
7/23/2011 0.00
7/24/2011 0.41
7/25/2011 0.00
7/26/2011 0.14
7/27/2011 0.00
7/28/2011 0.00
7/29/2011 0.00
7/30/2011 0.00
7/31/2011 0.00
8/1/2011 0.00
8/2/2011 T
8/3/2011 T
8/4/2011 0.21
8/5/2011 0.00
8/6/2011 0.00
8/7/2011 0.28
8/8/2011 1.22
8/9/2011 0.00
8/10/2011 0.06
8/11/2011 0.00
8/12/2011 0.00
8/13/2011 0.00
8/14/2011 0.87
8/15/2011 0.96
8/16/2011 0.02
8/17/2011 0.00
8/18/2011 0.00
8/19/2011 0.06
8/20/2011 0.44
8/21/2011 0.00
8/22/2011 0.26
8/23/2011 0.00
8/24/2011 0.00
8/25/2011 0.00
8/26/2011 0.27
8/27/2011 T
8/28/2011 5.08
8/29/2011 0.13
8/30/2011 0.00
8/31/2011 0.00
9/1/2011 0.00
9/2/2011 0.12
9/3/2011 0.00
9/4/2011 0.00
9/5/2011 0.07
9/6/2011 1.67
9/7/2011 0.91
9/8/2011 3.74
9/9/2011 0.95
9/10/2011 0.56
9/11/2011 0.00
9/12/2011 0.02
9/13/2011 0.00
9/14/2011 0.00
9/15/2011 0.00
9/16/2011 0.09
9/17/2011 0.00
9/18/2011 T
9/19/2011 0.00
9/20/2011 T
9/21/2011 0.24
9/22/2011 0.05
9/23/2011 0.00
9/24/2011 2.29
9/25/2011 0.02
9/26/2011 0.00
9/27/2011 0.00
9/28/2011 0.28
9/29/2011 0.22
9/30/2011 0.00



Observation Date Observation Time Precipitation Snowfall Snowfall SWE Snow Depth Snow SWE Notes
10/1/2010 8:00 AM 3.56 0.0 M 0.0 M Heavy tropical-type rain NOT from the remnant of TRS Nicole.
10/2/2010 7:00 AM 0.00 0.0 M 0.0 M
10/3/2010 7:00 AM 0.00 0.0 M 0.0 M
10/4/2010 7:00 AM 0.56 0.0 M 0.0 M -RA started last evening.
10/5/2010 7:00 AM 0.21 0.0 M 0.0 M Storm total 0.77 inch. -RA until early afternoon.
10/6/2010 7:00 AM 0.01 0.0 M 0.0 M Light showers just after midnight.
10/7/2010 7:45 AM 0.02 0.0 M 0.0 M -SHRA in the late evening.
10/8/2010 7:00 AM 0.00 0.0 M 0.0 M
10/9/2010 7:00 AM 0.00 0.0 M 0.0 M
10/10/2010 7:00 AM 0.00 0.0 M 0.0 M
10/11/2010 7:00 AM 0.00 0.0 M 0.0 M
10/12/2010 7:00 AM 0.00 0.0 M 0.0 M
10/13/2010 7:00 AM 0.00 0.0 M 0.0 M
10/14/2010 7:45 AM 0.02 0.0 M 0.0 M -RA this morning.
10/15/2010 7:30 AM 1.31 0.0 M 0.0 M -RA/+SHRA from 0800 through 1400. -SHRA around 2000, T.
10/16/2010 7:00 AM 0.00 0.0 M 0.0 M
10/17/2010 7:00 AM 0.00 0.0 M 0.0 M
10/18/2010 7:00 AM 0.00 0.0 M 0.0 M
10/19/2010 7:00 AM 0.01 0.0 M 0.0 M -SHRA around midnight.
10/20/2010 7:00 AM 0.00 0.0 M 0.0 M
10/21/2010 7:00 AM 0.03 0.0 M 0.0 M -RA in the early afternoon.
10/22/2010 7:00 AM 0.00 0.0 M 0.0 M
10/23/2010 7:00 AM 0.00 0.0 M 0.0 M Light frost on rooftops; min temp 38F at standard level.
10/24/2010 7:00 AM 0.00 0.0 M 0.0 M Optical phenomenon: 0635, halo.
10/25/2010 7:00 AM 0.00 0.0 M 0.0 M
10/26/2010 7:00 AM 0.00 0.0 M 0.0 M
10/27/2010 7:00 AM 0.37 0.0 M 0.0 M -SHRA overnight and at time of observation.
10/28/2010 8:00 AM 0.74 0.0 M 0.0 M SHRA 0700-1000, 0.31; non-severe +TSRA 1300-1345, 0.43; -SHRA around 1800, T. New Gutter Helmet functioned perfectly!
10/29/2010 7:00 AM 0.00 0.0 M 0.0 M
10/30/2010 7:00 AM 0.00 0.0 M 0.0 M First frost of the season at ground level.
10/31/2010 7:00 AM 0.00 0.0 M 0.0 M
11/1/2010 7:00 AM 0.00 0.0 M 0.0 M
11/2/2010 7:00 AM 0.00 0.0 M 0.0 M
11/3/2010 7:00 AM 0.00 0.0 M 0.0 M
11/4/2010 7:00 AM 0.63 0.0 M 0.0 M -RA began last evening.
11/5/2010 7:00 AM 0.87 0.0 M 0.0 M -RA until evening; -SHRA in the predawn, time not known.
11/6/2010 7:00 AM 0.00 0.0 M 0.0 M
11/7/2010 7:00 AM 0.00 0.0 M 0.0 M
11/8/2010 7:00 AM 0.00 0.0 M 0.0 M
11/9/2010 7:00 AM 0.00 0.0 M 0.0 M
11/10/2010 7:00 AM 0.00 0.0 M 0.0 M
11/11/2010 7:00 AM 0.00 0.0 M 0.0 M
11/12/2010 7:00 AM 0.00 0.0 M 0.0 M
11/13/2010 7:00 AM 0.00 0.0 M 0.0 M
11/14/2010 7:00 AM 0.00 0.0 M 0.0 M
11/15/2010 7:00 AM 0.00 0.0 M 0.0 M
11/16/2010 7:00 AM 0.23 0.0 M 0.0 M -RA overnight.
11/17/2010 7:00 AM 0.39 0.0 M 0.0 M +TSRA 0045-0055 with gusty winds estimated to 40 mph. No wind damage. Otherwise light showers off and on until about 8:00 PM.
11/18/2010 7:00 AM 0.00 0.0 M 0.0 M
11/19/2010 7:00 AM 0.00 0.0 M 0.0 M
11/20/2010 7:00 AM 0.00 0.0 M 0.0 M
11/21/2010 7:00 AM 0.00 0.0 M 0.0 M
11/22/2010 7:00 AM 0.00 0.0 M M M
11/23/2010 7:00 AM 0.00 0.0 M M M
11/24/2010 7:00 AM T 0.0 M 0.0 M -SHRA midafternoon.
11/25/2010 8:45 AM 0.05 T M 0.0 M -RAPL briefly around 2 AM otherwise -RA.
11/26/2010 7:30 AM 0.01 0.0 M 0.0 M Occasional -RA this morning.
11/27/2010 7:00 AM 0.00 0.0 M 0.0 M
11/28/2010 7:00 AM 0.00 0.0 M 0.0 M First freezing temperature of the season; current temp = overnight low = 32F.
11/29/2010 7:00 AM 0.00 0.0 M 0.0 M First subfreezing temperature of the season; min temp 28F is also the current temp.
11/30/2010 7:00 AM T 0.0 M 0.0 M Occasional -RA.
12/1/2010 8:15 AM 0.51 0.0 M 0.0 M Several bursts of +SHRA; no severe weather overnight, but winds estimated to gale force at times. Report delayed due to computer problems. Occasional -RA at obs time.
12/2/2010 7:00 AM 0.52 0.0 M 0.0 M Frequent +SHRA until about 8 AM otherwise -RA until midday. No severe weather or wind damage in the vicinity.
12/3/2010 7:00 AM 0.00 0.0 M 0.0 M
12/4/2010 7:00 AM 0.00 0.0 M 0.0 M
12/5/2010 7:00 AM 0.00 0.0 M 0.0 M
12/6/2010 7:00 AM 0.00 0.0 M 0.0 M
12/7/2010 7:00 AM 0.00 0.0 M 0.0 M
12/8/2010 7:00 AM 0.00 0.0 M 0.0 M
12/9/2010 7:00 AM 0.00 0.0 M 0.0 M
12/10/2010 7:00 AM 0.00 0.0 M 0.0 M
12/11/2010 7:00 AM 0.00 0.0 M 0.0 M
12/12/2010 7:00 AM 0.38 0.0 M 0.0 M
12/13/2010 7:00 AM 0.49 0.1 M T M
12/14/2010 7:00 AM T T M 0.0 M
12/15/2010 7:00 AM 0.00 0.0 M 0.0 M
12/16/2010 7:00 AM 0.00 0.0 M 0.0 M
12/17/2010 7:00 AM 0.16 1.6 M 1.5 M -SN, first significant event of the month. And yes, its SWE was 10:1 ratio!
12/18/2010 7:00 AM 0.00 0.0 M 1.0 M Got my old computer running again; will catch up on back data.
12/19/2010 7:00 AM 0.00 0.0 M 1.0 M
12/20/2010 7:00 AM 0.00 0.0 M T M Snow depth 0 to 0.5 inches with many bare spots.
12/21/2010 7:00 AM 0.00 0.0 M 0.0 M Shaded protected areas still have about 0.5 inch snow cover.
12/22/2010 7:00 AM 0.00 0.0 M 0.0 M Still up to 1/2 inch snow in a few remaining protected areas.
12/23/2010 7:00 AM T 0.0 M 0.0 M Sprinkles around 8:00 AM.
12/24/2010 7:00 AM 0.00 0.0 M 0.0 M
12/25/2010 7:00 AM 0.00 0.0 M 0.0 M
12/26/2010 7:00 AM T 0.1 M T M Flurries around 8:30 AM and 1 PM; very light snow 11 PM-2 AM.
12/27/2010 7:00 AM 0.04 0.6 M 0.5 M Occasional -SN during day and evening. Storm total snowfall 0.7 inch.
12/28/2010 7:00 AM 0.00 0.0 M 0.0 M Traces of snow cover in protected areas.
12/29/2010 7:00 AM 0.00 0.0 M 0.0 M
12/30/2010 7:00 AM 0.00 0.0 M 0.0 M
12/31/2010 7:00 AM 0.00 0.0 M 0.0 M
1/1/2011 7:00 AM 0.00 0.0 M 0.0 M
1/2/2011 7:00 AM 0.02 0.0 M 0.0 M -RA late last evening and early this morning.
1/3/2011 7:00 AM 0.13 0.0 M 0.0 M -RA late morning into early afternoon.
1/4/2011 7:00 AM 0.00 0.0 M 0.0 M
1/5/2011 7:00 AM 0.00 0.0 M 0.0 M
1/6/2011 7:00 AM 0.00 0.0 M 0.0 M
1/7/2011 7:00 AM 0.00 0.0 M 0.0 M
1/8/2011 7:30 AM T T M T M Flurries in the predawn.
1/9/2011 7:00 AM 0.04 0.4 M 0.0 M -SHSN midmorning.
1/10/2011 7:00 AM 0.00 0.0 M 0.0 M
1/11/2011 7:00 AM 0.00 0.0 M 0.0 M
1/12/2011 7:00 AM 0.10 1.0 M 1.0 M -FZRASN 5:00-7:00 PM otherwise -SN. Precip and snowfall amounts are exactly as measured.
1/13/2011 7:00 AM 0.00 0.0 M T M
1/14/2011 7:00 AM 0.00 0.0 M T M
1/15/2011 7:00 AM 0.00 0.0 M 0.0 M
1/16/2011 7:00 AM 0.00 0.0 M 0.0 M
1/17/2011 7:00 AM 0.00 0.0 M 0.0 M
1/18/2011 7:00 AM 0.43 0.1 M T M Wintry mix changed to all -FZRA by 11 PM. Temp rose only from 29F to 32F overnight.
1/19/2011 7:00 AM 0.02 0.0 M 0.0 M -SHRA overnight.
1/20/2011 7:00 AM 0.00 0.0 M 0.0 M
1/21/2011 8:00 AM 0.03 0.3 M T M -SN in the predawn.
1/22/2011 7:00 AM 0.00 0.0 M 0.0 M
1/23/2011 7:00 AM 0.00 0.0 M 0.0 M
1/24/2011 7:00 AM 0.00 0.0 M 0.0 M
1/25/2011 7:00 AM 0.00 0.0 M 0.0 M
1/26/2011 7:00 AM 0.22 0.4 M T M -RASNPL changed to -DZ around 0630.
1/27/2011 7:00 AM 1.66 7.6 M 7.0 M -RADZ with few ice pellets and snowflakes 0700-1529. +TSRAPL 1529-1600. +SN 1600-2200, -SN 2200-2300.
1/28/2011 7:00 AM 0.00 0.0 M 6.0 M
1/29/2011 7:00 AM 0.07 0.8 M 6.0 M -SN until early afternoon. Maximum snow depth 7 inches at 1 PM.
1/30/2011 7:00 AM 0.00 0.0 M 6.0 M
1/31/2011 7:00 AM 0.00 0.0 M 5.0 M
2/1/2011 7:00 AM T T M 5.0 M -SNPL 8:00-8:30PM. -FZDZ at observation time.
2/2/2011 7:00 AM 0.78 0.0 M 4.0 M -RA overnight, then -DZ since about 6 AM.
2/3/2011 7:00 AM 0.01 0.0 M 2.5 M -RA ended by 0800.
2/4/2011 7:00 AM 0.00 0.0 M 1.0 M Snow depth 0 - 2 inches.
2/5/2011 7:00 AM 0.02 0.0 M 1.0 M Light drizzle and rain overnight. Snow depth 0 - 1.5 inches.
2/6/2011 7:00 AM 0.12 0.0 M T M -RA/-DZ until late afternoon. -SHRA 7-8 PM. Snow cover zero to a half inch.
2/7/2011 7:00 AM 0.00 0.0 M 0.0 M No snow cover except in shaded areas, which doesn't count.
2/8/2011 7:00 AM 0.02 0.0 M 0.0 M -SHRA early this morning.
2/9/2011 7:00 AM 0.00 0.0 M 0.0 M
2/10/2011 7:00 AM 0.04 0.5 M T M -SN in the evening.
2/11/2011 7:00 AM 0.00 0.0 M 0.0 M
2/12/2011 7:00 AM 0.00 0.0 M 0.0 M
2/13/2011 7:00 AM 0.00 0.0 M 0.0 M
2/14/2011 7:00 AM 0.00 0.0 M 0.0 M
2/15/2011 7:00 AM 0.00 0.0 M 0.0 M
2/16/2011 7:00 AM 0.00 0.0 M 0.0 M
2/17/2011 7:00 AM 0.00 0.0 M 0.0 M
2/18/2011 7:00 AM 0.00 0.0 M 0.0 M
2/19/2011 7:00 AM 0.00 0.0 M 0.0 M
2/20/2011 7:00 AM 0.00 0.0 M 0.0 M
2/21/2011 7:00 AM T 0.0 M 0.0 M -RA last evening.
2/22/2011 7:00 AM 0.13 0.5 M T M -RA from midday until about 10 PM; then -PLSN until about midnight; then -SN until the end. Estimated 0.2 inch of sleet and 0.3 inch of snow.
2/23/2011 7:00 AM 0.00 0.0 M 0.0 M
2/24/2011 7:00 AM 0.00 0.0 M 0.0 M
2/25/2011 7:00 AM 0.18 0.0 M 0.0 M -RA last evening and starting again around 6 AM.
2/26/2011 7:00 AM 0.16 0.0 M 0.0 M -RA ended around 9 AM; brief SHRA 1-2 PM. Strong but not damaging winds in afternoon with and following cold frontal passage.
2/27/2011 7:00 AM 0.00 0.0 M 0.0 M
2/28/2011 7:00 AM 0.12 0.0 M 0.0 M Overnight showers.
3/1/2011 7:00 AM 0.58 0.0 M 0.0 M -RA from midday to late evening. All precip fell on Feb 28. Calendar month precip 2.16.
3/2/2011 7:00 AM 0.00 0.0 M 0.0 M
3/3/2011 7:00 AM 0.00 0.0 M 0.0 M
3/4/2011 7:00 AM 0.00 0.0 M 0.0 M
3/5/2011 7:00 AM 0.00 0.0 M 0.0 M
3/6/2011 7:30 AM 0.20 0.0 M 0.0 M -RA occasional RA; RA at obs time.
3/7/2011 7:00 AM 1.41 T M 0.0 M Light to moderate rain through the day into evening. Few ice pellets around 11 PM then wet -SN until precip ended; no accumulation.
3/8/2011 7:00 AM 0.00 0.0 M 0.0 M
3/9/2011 7:00 AM 0.00 0.0 M 0.0 M
3/10/2011 7:00 AM 0.59 0.0 M 0.0 M -RA overnight, continuing at time of observation.
3/11/2011 7:00 AM 1.33 0.0 M 0.0 M -RA continued through 11 PM then -SHRA estimated between 1-4AM. No severe weather or flooding in the area last evening. Storm total 1.92 inches.
3/12/2011 7:00 AM 0.00 0.0 M 0.0 M
3/13/2011 7:00 AM 0.00 0.0 M 0.0 M
3/14/2011 7:00 AM 0.00 0.0 M 0.0 M
3/15/2011 7:00 AM 0.00 0.0 M 0.0 M
3/16/2011 7:00 AM 0.67 T M 0.0 M Brief -PL around 5 PM at precip onset. +RA midnight-2 AM. Otherwise -RA.
3/17/2011 7:00 AM 0.00 0.0 M 0.0 M
3/18/2011 7:00 AM 0.00 0.0 M 0.0 M
3/19/2011 7:00 AM 0.00 0.0 M 0.0 M
3/20/2011 7:00 AM 0.00 0.0 M 0.0 M
3/21/2011 7:00 AM 0.01 0.0 M 0.0 M -SHRA around midnight. OCNL LTGICCC DSNT NE CB DSNT NE MOV E.
3/22/2011 7:00 AM 0.24 0.0 M 0.0 M TSRA 7:02-7:45AM yesterday.
3/23/2011 7:00 AM 0.01 0.0 M 0.0 M -RA in the predawn. Precip intermittent.
3/24/2011 7:00 AM 0.48 0.0 M 0.0 M Periods of TSRA 1930-2200, 0.47. -DZ early this morning, 0.01.
3/25/2011 7:00 AM 0.09 0.0 M 0.0 M SHRA just after obs time yesterday.
3/26/2011 7:00 AM 0.00 0.0 M 0.0 M
3/27/2011 7:00 AM 0.03 0.3 M T M COR...erroneously entered for the 28th. -SN in the predawn. Based on neighbor's report.
3/28/2011 7:00 AM 0.00 0.0 M 0.0 M
3/29/2011 7:00 AM 0.00 0.0 M M M
3/30/2011 7:00 AM 0.00 0.0 M M M
3/31/2011 8:00 AM 0.17 T M 0.0 M -RA; -RASN briefly observed around 7 PM. -DZ after midnight continuing to obs time.
4/1/2011 8:00 AM 0.12 0.0 M 0.0 M -RA continued through this morning's obs time. Estimated 0.03 before midnight.
4/2/2011 7:00 AM T 0.0 M 0.0 M -SHRA ended soon after obs time yesterday.
4/3/2011 7:00 AM 0.13 T M 0.0 M -SHRA 8:00-8:20 AM, 0.01; -TSRA 1:15-1:30, then again 2:50-3:10 PM; pea size (GR 1/4) hail 2:58-3:00 PM. The T of snowfall was the hail.
4/4/2011 7:00 AM T 0.0 M 0.0 M -TSRA in the evening.
4/5/2011 7:00 AM 0.26 0.0 M 0.0 M Brief strong TSRA around 4:30 AM otherwise -SHRA in the predawn. No wind damage.
4/6/2011 7:00 AM 0.33 0.0 M 0.0 M SHRA until early afternoon.
4/7/2011 7:00 AM 0.00 0.0 M 0.0 M
4/8/2011 7:00 AM 0.03 0.0 M 0.0 M -RA this predawn.
4/9/2011 7:00 AM 0.42 0.0 M 0.0 M -RA through the daylight hours yesterday, also -RADZ in the predawn today.
4/10/2011 7:00 AM T 0.0 M 0.0 M -DZ at obs time.
4/11/2011 7:00 AM T 0.0 M 0.0 M Occasional -DZ until about 10 AM.
4/12/2011 7:00 AM 0.00 0.0 M 0.0 M Expectations of possible severe weather overnight did not materialize; not even a drop of rain.
4/13/2011 7:00 AM 0.33 0.0 M 0.0 M Occasional -RA yesterday during the day and in today's predawn. -DZ at 7 AM obs time today.
4/14/2011 7:00 AM 0.09 0.0 M 0.0 M -RADZ ended midday.
4/15/2011 7:00 AM 0.00 0.0 M 0.0 M
4/16/2011 7:30 AM T 0.0 M 0.0 M Sprinkles at obs time.
4/17/2011 7:00 AM 0.85 0.0 M 0.0 M SE winds gusting to about 40 mph (estimated) until 8 PM. SHRA through about 4 PM; non-severe TSRA 4-6 PM; then -SHRA until late evening. Fairly large dead tree branch was blown down in neighbor's yard.
4/18/2011 7:00 AM 0.00 0.0 M 0.0 M
4/19/2011 7:00 AM 0.00 0.0 M 0.0 M
4/20/2011 6:00 AM 0.03 0.0 M 0.0 M -TSRA late morning.
4/21/2011 7:00 AM 0.00 0.0 M 0.0 M
4/22/2011 7:00 AM 0.00 0.0 M 0.0 M
4/23/2011 7:45 AM 0.47 0.0 M 0.0 M -RA intermittently from about 10 AM on.
4/24/2011 7:00 AM 0.01 0.0 M 0.0 M -SHRA ended by midmorning Saturday.
4/25/2011 7:00 AM 0.91 0.0 M 0.0 M Series of thunderstorms last evening.
4/26/2011 7:00 AM 0.00 0.0 M 0.0 M
4/27/2011 6:30 AM 0.00 0.0 M 0.0 M
4/28/2011 7:00 AM 1.39 0.0 M 0.0 M Tornadic thunderstorms passed just N and just S of site between 7 and 8 PM yesterday. No tornadic activity or strong winds observed here. 1/2-inch hail 7:31-7:33 PM, maximum depth T. -TSRA 10-11 PM, 0.01 as another severe storm went by well to the NW.
4/29/2011 7:00 AM 0.34 0.0 M 0.0 M Non-severe +TSRA late morning, the last gasp of the long-running severe weather threat.
4/30/2011 7:00 AM 0.00 0.0 M 0.0 M
5/1/2011 7:00 AM 0.00 0.0 M 0.0 M
5/2/2011 7:00 AM 0.03 0.0 M 0.0 M Occasional -RA during day yesterday and 5-6 AM today.
5/3/2011 7:00 AM 0.00 0.0 M 0.0 M
5/4/2011 7:00 AM 0.47 0.0 M 0.0 M -RA started just after midnight EDT.
5/5/2011 7:00 AM 0.29 0.0 M 0.0 M Steady rain ended late in the morning. Brief SHRA around 6:30 PM dropped 0.03 inch.
5/6/2011 7:00 AM 0.00 0.0 M 0.0 M
5/7/2011 7:00 AM 0.00 0.0 M 0.0 M
5/8/2011 7:00 AM 0.00 0.0 M 0.0 M
5/9/2011 7:00 AM 0.01 0.0 M 0.0 M -SHRA last evening.
5/10/2011 7:00 AM 0.00 0.0 M 0.0 M
5/11/2011 7:00 AM T 0.0 M 0.0 M -SHRA around 5 AM; time estimated.
5/12/2011 7:00 AM 0.00 0.0 M 0.0 M
5/13/2011 7:50 AM T 0.0 M 0.0 M Sprinkles this morning.
5/14/2011 7:00 AM T 0.0 M 0.0 M Spotty -RA and -DZ through the day.
5/15/2011 7:30 AM 0.57 0.0 M 0.0 M -SHRA 8-11AM 14th, 0.13; +TSRA 10PM-midnight 0.44; -SHRA 5-6AM today, T.
5/16/2011 7:00 AM 0.00 0.0 M 0.0 M SHRA in vicinity yesterday afternoon and evening, but nothing at site.
5/17/2011 7:00 AM 0.01 0.0 M 0.0 M Occasional -RA this morning.
5/18/2011 7:00 AM 0.05 M M M M -SHRA early yesterday afternoon (noon-2 PM) and early this morning.
5/19/2011 7:00 AM 0.12 0.0 M 0.0 M SHRA midday.
5/20/2011 7:00 AM 0.17 0.0 M 0.0 M TSRA late last eve.
5/21/2011 7:00 AM T 0.0 M 0.0 M Sprinkles early yesterday afternoon.
5/22/2011 7:00 AM 0.00 0.0 M 0.0 M
5/23/2011 7:00 AM 0.07 0.0 M 0.0 M -SHRA 2-3 PM yesterday and predawn today.
5/24/2011 7:00 AM T 0.0 M 0.0 M -SHRA late afternoon.
5/25/2011 7:00 AM 0.17 0.0 M 0.0 M TSRA 4:27-5:00 PM, 0.12; dissipating -TSRA 1:20-2:00 AM today, 0.05.
5/26/2011 7:00 AM 0.00 0.0 M 0.0 M
5/27/2011 7:00 AM 0.00 0.0 M 0.0 M
5/28/2011 7:00 AM 0.02 0.0 M 0.0 M Strong thunderstorms came up snapping and snarling last eve, with darkening skies and severe thunderstorm warnings, then they quickly fizzled.
5/29/2011 7:00 AM 0.00 0.0 M 0.0 M
5/30/2011 7:00 AM 0.00 0.0 M 0.0 M
5/31/2011 7:00 AM 0.00 0.0 M 0.0 M
6/1/2011 7:00 AM 0.00 0.0 M 0.0 M
6/2/2011 7:00 AM 0.04 0.0 M 0.0 M -TSRA last evening. I observed 3/4-inch hail at KDCA (5 miles to the NNW) during this storm; but a neighbor said no hail fell here.
6/3/2011 7:00 AM 0.00 0.0 M 0.0 M
6/4/2011 7:00 AM 0.00 0.0 M 0.0 M
6/5/2011 7:00 AM T 0.0 M 0.0 M -SHRA early this morning.
6/6/2011 7:00 AM 0.00 0.0 M 0.0 M
6/7/2011 7:00 AM 0.00 0.0 M 0.0 M
6/8/2011 7:00 AM 0.00 0.0 M 0.0 M
6/9/2011 7:00 AM 0.00 0.0 M 0.0 M
6/10/2011 7:00 AM 0.09 0.0 M 0.0 M -TSRA in the predawn.
6/11/2011 7:00 AM 0.00 0.0 M 0.0 M
6/12/2011 7:00 AM 0.82 0.0 M 0.0 M +TSRA late morning, 0.74; -SHRA afternoon, 0.08.
6/13/2011 7:00 AM 0.03 0.0 M 0.0 M Dissipating -TSRA last evening.
6/14/2011 7:00 AM 0.00 0.0 M 0.0 M
6/15/2011 7:00 AM T 0.0 M 0.0 M Sprinkles late afternoon.
6/16/2011 7:00 AM 0.00 0.0 M 0.0 M
6/17/2011 7:00 AM 1.24 0.0 M 0.0 M -RA 7:10-8:00 AM, 0.01; then a series of +TSRA from about 11 PM until 1 AM, 1.23. Thunderstorms were not severe.
6/18/2011 7:00 AM 0.34 0.0 M 0.0 M Evening TSRA.
6/19/2011 7:00 AM 0.01 0.0 M 0.0 M Occasional -RA overnight.
6/20/2011 7:00 AM 0.17 0.0 M 0.0 M -RA started just after midnight; raining at obs time.
6/21/2011 7:00 AM 0.07 0.0 M 0.0 M -RA ended around 9 AM; more -RA 1-3 AM today.
6/22/2011 7:00 AM 0.01 0.0 M 0.0 M -TSRA last evening; on edge of thunderstorm just to the north.
6/23/2011 7:00 AM 0.00 0.0 M 0.0 M
6/24/2011 7:00 AM T 0.0 M 0.0 M Midmorning sprinkles.
6/25/2011 7:00 AM 0.00 0.0 M 0.0 M
6/26/2011 7:00 AM 0.00 0.0 M 0.0 M
6/27/2011 7:00 AM 0.02 0.0 M 0.0 M Occasional -RA overnight.
6/28/2011 7:00 AM 0.00 0.0 M 0.0 M
6/29/2011 7:00 AM T 0.0 M 0.0 M TS 6:14-7:00PM then sprinkles with thunder until 7:30 PM.
6/30/2011 7:00 AM 0.00 0.0 M 0.0 M
7/1/2011 7:00 AM 0.00 0.0 M 0.0 M
7/2/2011 7:00 AM 0.00 0.0 M 0.0 M
7/3/2011 7:00 AM 0.46 0.0 M 0.0 M +TSRA 4-6 AM otherwise -SHRA.
7/4/2011 7:00 AM 0.32 0.0 M 0.0 M -RA ended around 8 AM yesterday; additional T. +TSRA last evening, non-severe. Sprinkles around 5 AM today, time estimated.
7/5/2011 7:00 AM 0.01 0.0 M 0.0 M Light showers at several times during the day.
7/6/2011 7:00 AM 0.00 0.0 M 0.0 M
7/7/2011 7:00 AM 0.04 0.0 M 0.0 M -RA midmorning through midday.
7/8/2011 7:00 AM 0.00 0.0 M 0.0 M
7/9/2011 7:00 AM 1.14 0.0 M 0.0 M +TSRA 1630-1710EDT otherwise SHRA.
7/10/2011 7:00 AM 0.00 0.0 M 0.0 M
7/11/2011 7:00 AM 0.00 0.0 M 0.0 M
7/12/2011 7:00 AM T 0.0 M 0.0 M Furious line of thunderstorms came charging in last evening from the NW, full of LTGICCCCG, and: almost nothing.
7/13/2011 7:00 AM 0.00 0.0 M 0.0 M
7/14/2011 7:00 AM 0.98 0.0 M 0.0 M +TSRA non-severe; +RA 3:10-3:40 PM; -RA/RA 3:40-4:30PM.
7/15/2011 7:00 AM 0.00 0.0 M 0.0 M
7/16/2011 7:00 AM 0.00 0.0 M 0.0 M
7/17/2011 7:00 AM 0.00 0.0 M 0.0 M
7/18/2011 7:00 AM 0.00 0.0 M 0.0 M
7/19/2011 7:00 AM 0.00 0.0 M M M
7/20/2011 7:00 AM 0.00 0.0 M M M
7/21/2011 7:00 AM 0.00 0.0 M M M
7/22/2011 7:00 AM 0.00 0.0 M M M
7/23/2011 7:00 AM 0.00 0.0 M M M
7/24/2011 7:00 AM 0.41 M M M M +TSRA eve of Jul 23 per neighbor
7/25/2011 7:00 AM 0.00 0.0 M 0.0 M
7/26/2011 7:00 AM 0.14 0.0 M 0.0 M -TSRA 1:05-3:00 PM.
7/27/2011 7:00 AM 0.00 0.0 M 0.0 M
7/28/2011 7:00 AM 0.00 0.0 M 0.0 M
7/29/2011 7:00 AM 0.00 0.0 M 0.0 M
7/30/2011 7:00 AM 0.00 0.0 M 0.0 M
7/31/2011 7:00 AM 0.00 0.0 M 0.0 M
8/1/2011 7:00 AM 0.00 0.0 M 0.0 M
8/2/2011 7:00 AM T 0.0 M 0.0 M -TSRA late afternoon; strongest activity just to the SW.
8/3/2011 7:00 AM T 0.0 M 0.0 M Sprinkles around 6 AM.
8/4/2011 8:00 AM 0.21 0.0 M 0.0 M Occasional -RA. Brief SHRA around 5 PM. Time of precip given in "duration information" section is not continuous.
8/5/2011 7:00 AM 0.00 0.0 M 0.0 M
8/6/2011 7:00 AM 0.00 0.0 M 0.0 M
8/7/2011 7:00 AM 0.28 0.0 M 0.0 M +SHRA produced 0.24 inch from 1835 to 1845, otherwise -SHRA; no precip 1900-2100.
8/8/2011 7:00 AM 1.22 0.0 M 0.0 M +TSRA in the late afternoon, non-severe.
8/9/2011 7:00 AM 0.00 0.0 M 0.0 M
8/10/2011 7:00 AM 0.06 0.0 M 0.0 M Brief +SHRA.
8/11/2011 7:00 AM 0.00 0.0 M 0.0 M
8/12/2011 7:00 AM 0.00 0.0 M 0.0 M
8/13/2011 7:00 AM 0.00 0.0 M 0.0 M
8/14/2011 7:30 AM 0.87 0.0 M 0.0 M +TSRA 12:40-1:00PM, 0.40; +TSRA 4:00-4:15PM, 0.30; SHRA 1-5 AM, 0.17. Thunderstorms were not severe.
8/15/2011 7:00 AM 0.96 0.0 M 0.0 M -SHRA midmorning, 0.02; +TSRA toward midnight, 0.94. Thunderstorm was not severe.
8/16/2011 7:00 AM 0.02 0.0 M 0.0 M -TSRA 6-7 PM.
8/17/2011 7:00 AM 0.00 0.0 M 0.0 M
8/18/2011 7:00 AM 0.00 0.0 M 0.0 M
8/19/2011 7:00 AM 0.06 0.0 M 0.0 M -TSRA 7-8 PM yesterday 0.01; dying -TSRA early today 0.05.
8/20/2011 7:00 AM 0.44 0.0 M 0.0 M +TSRA in the evening, not severe.
8/21/2011 7:00 AM 0.00 0.0 M 0.0 M
8/22/2011 7:00 AM 0.26 0.0 M 0.0 M +TSRA midafternoon, not severe.
8/23/2011 7:00 AM 0.00 0.0 M 0.0 M
8/24/2011 7:00 AM 0.00 0.0 M 0.0 M Earthquake at 1351EDT knocked small items off shelves and table tops. Apparently no damage to house.
8/25/2011 7:00 AM 0.00 0.0 M 0.0 M
8/26/2011 7:00 AM 0.27 0.0 M 0.0 M TSRA 1-2 Pm.
8/27/2011 7:00 AM T 0.0 M 0.0 M Light showers in the afternoon.
8/28/2011 7:00 AM 5.08 0.0 M 0.0 M Good night, Irene; good night, Irene...I'll see you in my dreams... Power out 0100-1900EDT so just submitting this.
8/29/2011 7:00 AM 0.13 0.0 M 0.0 M Hurricane IRENE storm total 5.21 inches. Little damage locally despite storm-force winds early yesterday morning, which died down considerably after about 2 AM.
8/30/2011 7:00 AM 0.00 0.0 M 0.0 M
8/31/2011 7:00 AM 0.00 0.0 M 0.0 M
9/1/2011 7:00 AM 0.00 0.0 M 0.0 M
9/2/2011 7:00 AM 0.12 0.0 M 0.0 M TSRA 3-4 AM.
9/3/2011 7:00 AM 0.00 0.0 M 0.0 M
9/4/2011 7:00 AM 0.00 0.0 M 0.0 M
9/5/2011 7:00 AM 0.07 0.0 M 0.0 M Brief +SHRA in the .
9/6/2011 7:00 AM 1.67 0.0 M 0.0 M -RA from midmorning on; few +SHRA 2300-2400.
9/7/2011 7:00 AM 0.91 0.0 M 0.0 M Rain through about 1 AM, then SHRA started around 6 AM.
9/8/2011 7:00 AM 3.74 0.0 M 0.0 M Periods of +SHRA and +TSRA in the afternoon and evening.
9/9/2011 7:00 AM 0.95 0.0 M 0.0 M More rain, with thunderstorms in the evening.
9/10/2011 7:00 AM 0.56 0.0 M 0.0 M +SHRA midmorning.
9/11/2011 7:00 AM 0.00 0.0 M 0.0 M
9/12/2011 7:00 AM 0.02 0.0 M 0.0 M -SHRA around midnight.
9/13/2011 7:00 AM 0.00 0.0 M 0.0 M
9/14/2011 7:00 AM 0.00 0.0 M 0.0 M
9/15/2011 7:00 AM 0.00 0.0 M 0.0 M
9/16/2011 7:00 AM 0.09 0.0 M 0.0 M -SHRA late afternoon and eve.
9/17/2011 7:00 AM 0.00 0.0 M 0.0 M
9/18/2011 7:00 AM T 0.0 M 0.0 M -RA in the evening.
9/19/2011 7:00 AM 0.00 0.0 M 0.0 M
9/20/2011 7:00 AM T 0.0 M 0.0 M Sprinkles around 6 AM; time estimated.
9/21/2011 7:00 AM 0.24 0.0 M 0.0 M -RA in the morning and early afternoon.
9/22/2011 7:00 AM 0.05 0.0 M 0.0 M Light rain in the evening.
9/23/2011 7:00 AM 0.00 0.0 M 0.0 M
9/24/2011 7:00 AM 2.29 0.0 M 0.0 M -RA occasionally +RA midmorning through early evening.
9/25/2011 7:00 AM 0.02 0.0 M 0.0 M -RA overnight.
9/26/2011 7:00 AM 0.00 0.0 M 0.0 M
9/27/2011 7:00 AM 0.00 0.0 M 0.0 M
9/28/2011 7:00 AM 0.28 M M M M
9/29/2011 7:00 AM 0.22 M M M M
9/30/2011 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



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
4/2/2011 2:58 PM NA 1/4" Pea Size NA White Ice 2 1min no damage Continuous False After rain vertical