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 14 3.61 3.45 31 3.45 31 0.00 0 0 13 3 0.0 0 0
Nov 14 3.32 2.86 30 2.86 30 0.00 0 0 8 3 0.2 1 0
Dec 14 3.23 3.99 31 3.99 31 0.00 0 0 12 1 0.0 0 0
Jan 15 3.00 3.85 31 3.85 31 0.00 0 0 16 5 3.4 6 5
Feb 15 2.68 1.89 28 1.89 28 0.00 0 0 9 4 11.2 8 12
March 15 3.65 4.35 31 4.35 31 0.00 0 0 14 3 6.2 4 5
April 15 3.31 3.19 30 3.19 30 0.00 0 0 14 2 0.0 0 0
May 15 4.17 2.23 31 2.23 31 0.00 0 0 6 4 0.0 0 0
June 15 3.80 10.72 30 10.72 30 0.00 0 0 16 3 0.0 0 0
July 15 3.96 5.30 31 5.30 31 0.00 0 0 17 4 0.0 0 0
Aug 15 3.23 1.15 31 1.15 31 0.00 0 0 5 2 0.0 0 0
Sept 15 3.68 2.52 30 2.52 30 0.00 0 0 6 4 0.0 0 0
Water Year Totals: 41.64" 45.50" 365 days 45.50" 365 0.00" 0 days 0 136 days 38 days 21.0" 19 days 22 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
10/1/2014 0.03
10/2/2014 0.03
10/3/2014 0.00
10/4/2014 0.20
10/5/2014 T
10/6/2014 0.00
10/7/2014 T
10/8/2014 0.21
10/9/2014 0.00
10/10/2014 T
10/11/2014 0.39
10/12/2014 0.14
10/13/2014 0.00
10/14/2014 0.07
10/15/2014 0.00
10/16/2014 1.22
10/17/2014 0.02
10/18/2014 0.00
10/19/2014 0.00
10/20/2014 0.00
10/21/2014 0.01
10/22/2014 0.37
10/23/2014 0.75
10/24/2014 0.00
10/25/2014 0.00
10/26/2014 0.00
10/27/2014 0.00
10/28/2014 0.00
10/29/2014 0.00
10/30/2014 0.01
10/31/2014 0.00
11/1/2014 0.00
11/2/2014 T
11/3/2014 0.00
11/4/2014 0.00
11/5/2014 0.00
11/6/2014 0.23
11/7/2014 0.36
11/8/2014 T
11/9/2014 0.00
11/10/2014 0.00
11/11/2014 0.00
11/12/2014 0.00
11/13/2014 0.00
11/14/2014 0.04
11/15/2014 0.00
11/16/2014 0.00
11/17/2014 0.14
11/18/2014 0.60
11/19/2014 0.00
11/20/2014 0.00
11/21/2014 0.00
11/22/2014 0.00
11/23/2014 0.00
11/24/2014 0.27
11/25/2014 0.00
11/26/2014 0.28
11/27/2014 0.94
11/28/2014 T
11/29/2014 0.00
11/30/2014 0.00
12/1/2014 0.00
12/2/2014 0.48
12/3/2014 0.51
12/4/2014 0.00
12/5/2014 0.02
12/6/2014 0.03
12/7/2014 0.53
12/8/2014 0.00
12/9/2014 0.20
12/10/2014 0.20
12/11/2014 0.00
12/12/2014 T
12/13/2014 0.00
12/14/2014 0.00
12/15/2014 0.00
12/16/2014 0.00
12/17/2014 0.40
12/18/2014 0.00
12/19/2014 0.00
12/20/2014 0.00
12/21/2014 0.00
12/22/2014 0.00
12/23/2014 0.27
12/24/2014 0.54
12/25/2014 0.61
12/26/2014 0.00
12/27/2014 0.00
12/28/2014 0.00
12/29/2014 0.20
12/30/2014 0.00
12/31/2014 0.00
Day of YearDaily PrcpMultiday Prcp
1/1/2015 0.00
1/2/2015 0.00
1/3/2015 T
1/4/2015 0.49
1/5/2015 0.06
1/6/2015 0.07
1/7/2015 0.11
1/8/2015 T
1/9/2015 0.00
1/10/2015 0.00
1/11/2015 0.00
1/12/2015 0.15
1/13/2015 0.70
1/14/2015 0.01
1/15/2015 T
1/16/2015 0.00
1/17/2015 0.00
1/18/2015 0.03
1/19/2015 0.66
1/20/2015 0.00
1/21/2015 0.00
1/22/2015 0.07
1/23/2015 0.01
1/24/2015 1.16
1/25/2015 0.01
1/26/2015 0.12
1/27/2015 0.16
1/28/2015 T
1/29/2015 0.00
1/30/2015 0.04
1/31/2015 T
2/1/2015 0.00
2/2/2015 0.07
2/3/2015 0.01
2/4/2015 0.00
2/5/2015 0.00
2/6/2015 0.00
2/7/2015 0.00
2/8/2015 0.00
2/9/2015 0.00
2/10/2015 0.23
2/11/2015 0.00
2/12/2015 0.00
2/13/2015 T
2/14/2015 0.00
2/15/2015 0.01
2/16/2015 0.00
2/17/2015 0.50
2/18/2015 T
2/19/2015 T
2/20/2015 0.01
2/21/2015 0.00
2/22/2015 0.86
2/23/2015 0.00
2/24/2015 0.00
2/25/2015 0.00
2/26/2015 0.14
2/27/2015 0.06
2/28/2015 T
3/1/2015 T
3/2/2015 0.47
3/3/2015 0.00
3/4/2015 0.07
3/5/2015 0.50
3/6/2015 0.85
3/7/2015 0.00
3/8/2015 0.00
3/9/2015 0.00
3/10/2015 0.00
3/11/2015 0.35
3/12/2015 0.01
3/13/2015 0.00
3/14/2015 0.37
3/15/2015 0.26
3/16/2015 0.00
3/17/2015 T
3/18/2015 0.00
3/19/2015 0.00
3/20/2015 0.20
3/21/2015 0.23
3/22/2015 T
3/23/2015 0.00
3/24/2015 0.00
3/25/2015 0.00
3/26/2015 0.01
3/27/2015 0.92
3/28/2015 0.09
3/29/2015 0.00
3/30/2015 0.02
3/31/2015 0.00
Day of YearDaily PrcpMultiday Prcp
4/1/2015 0.02
4/2/2015 0.00
4/3/2015 0.00
4/4/2015 0.19
4/5/2015 0.00
4/6/2015 0.00
4/7/2015 0.02
4/8/2015 0.01
4/9/2015 0.04
4/10/2015 0.03
4/11/2015 0.01
4/12/2015 0.00
4/13/2015 0.00
4/14/2015 0.14
4/15/2015 0.84
4/16/2015 0.00
4/17/2015 0.05
4/18/2015 0.01
4/19/2015 0.00
4/20/2015 1.04
4/21/2015 0.46
4/22/2015 0.00
4/23/2015 T
4/24/2015 0.00
4/25/2015 0.00
4/26/2015 0.33
4/27/2015 0.00
4/28/2015 T
4/29/2015 0.00
4/30/2015 0.00
5/1/2015 0.02
5/2/2015 0.00
5/3/2015 0.00
5/4/2015 0.00
5/5/2015 0.00
5/6/2015 0.14
5/7/2015 0.00
5/8/2015 0.00
5/9/2015 T
5/10/2015 T
5/11/2015 T
5/12/2015 0.00
5/13/2015 0.00
5/14/2015 0.00
5/15/2015 0.00
5/16/2015 0.00
5/17/2015 0.50
5/18/2015 0.00
5/19/2015 1.16
5/20/2015 0.00
5/21/2015 T
5/22/2015 0.34
5/23/2015 0.00
5/24/2015 0.00
5/25/2015 0.00
5/26/2015 0.00
5/27/2015 0.00
5/28/2015 0.00
5/29/2015 0.07
5/30/2015 0.00
5/31/2015 0.00
6/1/2015 0.03
6/2/2015 1.67
6/3/2015 0.14
6/4/2015 0.11
6/5/2015 0.50
6/6/2015 T
6/7/2015 0.00
6/8/2015 0.00
6/9/2015 0.20
6/10/2015 0.00
6/11/2015 0.00
6/12/2015 0.00
6/13/2015 0.02
6/14/2015 T
6/15/2015 0.41
6/16/2015 0.01
6/17/2015 0.00
6/18/2015 0.30
6/19/2015 0.67
6/20/2015 T
6/21/2015 3.15
6/22/2015 0.00
6/23/2015 0.00
6/24/2015 0.57
6/25/2015 0.00
6/26/2015 0.69
6/27/2015 0.23
6/28/2015 2.02
6/29/2015 0.00
6/30/2015 0.00
Day of YearDaily PrcpMultiday Prcp
7/1/2015 0.73
7/2/2015 0.90
7/3/2015 0.01
7/4/2015 0.04
7/5/2015 0.98
7/6/2015 0.01
7/7/2015 0.24
7/8/2015 0.00
7/9/2015 1.40
7/10/2015 T
7/11/2015 0.13
7/12/2015 0.11
7/13/2015 0.00
7/14/2015 0.11
7/15/2015 0.01
7/16/2015 0.04
7/17/2015 0.00
7/18/2015 0.00
7/19/2015 0.02
7/20/2015 0.00
7/21/2015 0.00
7/22/2015 T
7/23/2015 0.00
7/24/2015 0.00
7/25/2015 0.00
7/26/2015 0.00
7/27/2015 0.01
7/28/2015 0.26
7/29/2015 T
7/30/2015 T
7/31/2015 0.30
8/1/2015 0.00
8/2/2015 T
8/3/2015 0.00
8/4/2015 0.00
8/5/2015 0.07
8/6/2015 0.00
8/7/2015 0.14
8/8/2015 0.00
8/9/2015 0.00
8/10/2015 0.00
8/11/2015 0.29
8/12/2015 0.00
8/13/2015 0.00
8/14/2015 0.00
8/15/2015 0.00
8/16/2015 0.00
8/17/2015 0.00
8/18/2015 0.00
8/19/2015 0.00
8/20/2015 0.00
8/21/2015 0.27
8/22/2015 0.00
8/23/2015 0.00
8/24/2015 0.00
8/25/2015 0.38
8/26/2015 0.00
8/27/2015 0.00
8/28/2015 0.00
8/29/2015 0.00
8/30/2015 0.00
8/31/2015 T
9/1/2015 T
9/2/2015 0.00
9/3/2015 0.00
9/4/2015 0.33
9/5/2015 0.00
9/6/2015 0.00
9/7/2015 0.00
9/8/2015 0.00
9/9/2015 0.00
9/10/2015 0.02
9/11/2015 0.05
9/12/2015 0.00
9/13/2015 0.39
9/14/2015 0.00
9/15/2015 0.00
9/16/2015 0.00
9/17/2015 0.00
9/18/2015 0.00
9/19/2015 0.00
9/20/2015 0.00
9/21/2015 0.00
9/22/2015 0.21
9/23/2015 0.00
9/24/2015 0.00
9/25/2015 0.00
9/26/2015 T
9/27/2015 T
9/28/2015 T
9/29/2015 0.00
9/30/2015 1.52



Observation Date Observation Time Precipitation Snowfall Snowfall SWE Snow Depth Snow SWE Notes
10/1/2014 7:00 AM 0.03 0.0 M 0.0 M Occasional -RADZ yesterday morning until 9 AM and again this morning.
10/2/2014 7:00 AM 0.03 0.0 M 0.0 M -RA until 10 AM.
10/3/2014 7:00 AM 0.00 0.0 M 0.0 M
10/4/2014 7:00 AM 0.20 0.0 M 0.0 M -SHRA overnight.
10/5/2014 7:00 AM T 0.0 M 0.0 M Sprinkles midmorning. Current temperature 39F.
10/6/2014 7:00 AM 0.00 0.0 M 0.0 M
10/7/2014 7:00 AM T 0.0 M 0.0 M -SHRA in the predawn today.
10/8/2014 7:00 AM 0.21 0.0 M 0.0 M Non-severe thunderstorms around 8 PM and between 10:18PM and 10:45PM. Otherwise -SHRA until about 2 AM.
10/9/2014 7:00 AM 0.00 0.0 M 0.0 M
10/10/2014 7:30 AM T 0.0 M 0.0 M -SHRA around 7 AM.
10/11/2014 7:45 AM 0.39 0.0 M 0.0 M -RA overnight. -RA at obs time.
10/12/2014 7:45 AM 0.14 0.0 M 0.0 M -RA until about midday. Storm total 0.53 inch.
10/13/2014 7:00 AM 0.00 0.0 M 0.0 M
10/14/2014 7:00 AM 0.07 0.0 M 0.0 M -SHRA mid-late morning.
10/15/2014 6:00 AM 0.00 0.0 M 0.0 M
10/16/2014 7:00 AM 1.22 0.0 M 0.0 M THIS IS ALSO NWS CO-OP SITE OXNM2. Non-severe thunderstorm midday otherwise -RA with occasional SHRA. Tornado warning for Arlington, VA, and DCA while I was on duty at DCA. NWS called as storm rolled in to see if I saw any rotation in the clouds to our NE. I said No, it's raining too hard to tell. After the storm passed, I saw no evidence of damage or tornadic presence near the airport.
10/17/2014 7:00 AM 0.02 0.0 M 0.0 M -SHRA late evening.
10/18/2014 7:00 AM 0.00 0.0 M 0.0 M
10/19/2014 7:00 AM 0.00 0.0 M 0.0 M
10/20/2014 7:00 AM 0.00 0.0 M 0.0 M
10/21/2014 7:00 AM 0.01 0.0 M 0.0 M -SHRA around midnight.
10/22/2014 7:00 AM 0.37 0.0 M 0.0 M -RA overnight.
10/23/2014 7:30 AM 0.75 0.0 M 0.0 M -RA/few +SHRA through midmorning then occasional -RA through midevening.
10/24/2014 7:00 AM 0.00 0.0 M 0.0 M
10/25/2014 7:00 AM 0.00 0.0 M 0.0 M
10/26/2014 7:00 AM 0.00 0.0 M 0.0 M
10/27/2014 7:00 AM 0.00 0.0 M 0.0 M
10/28/2014 7:00 AM 0.00 0.0 M 0.0 M
10/29/2014 6:00 AM 0.00 0.0 M 0.0 M
10/30/2014 7:00 AM 0.01 0.0 M 0.0 M Occasional -RA yesterday afternoon.
10/31/2014 7:00 AM 0.00 0.0 M 0.0 M
11/1/2014 7:00 AM 0.00 0.0 M 0.0 M
11/2/2014 7:00 AM T 0.0 M 0.0 M -RA intermittent, around 8 AM and 3 PM briefly.
11/3/2014 7:00 AM 0.00 0.0 M 0.0 M
11/4/2014 7:00 AM 0.00 0.0 M 0.0 M
11/5/2014 7:00 AM 0.00 0.0 M 0.0 M
11/6/2014 7:00 AM 0.23 0.0 M 0.0 M -RA overnight.
11/7/2014 7:30 AM 0.36 0.0 M 0.0 M Non-severe +TSRA 2:41-3:00PM, 0.35; -SHRA 4-5PM 0.01.
11/8/2014 7:30 AM T 0.0 M 0.0 M Sprinkles late morning yesterday. This morning's min temp 31F, current temp 32F, with very light frost; the growing season is over.
11/9/2014 7:00 AM 0.00 0.0 M 0.0 M
11/10/2014 7:00 AM 0.00 0.0 M 0.0 M
11/11/2014 7:00 AM 0.00 0.0 M 0.0 M
11/12/2014 6:00 AM 0.00 0.0 M 0.0 M
11/13/2014 7:00 AM 0.00 0.0 M 0.0 M
11/14/2014 7:00 AM 0.04 T T 0.0 M Occasional -RA; few wet snowflakes.
11/15/2014 7:00 AM 0.00 0.0 M 0.0 M
11/16/2014 7:00 AM 0.00 0.0 M 0.0 M
11/17/2014 7:00 AM 0.14 0.0 M 0.0 M Occasional -RA overnight. --RA at obs time.
11/18/2014 7:00 AM 0.60 0.0 M 0.0 M -RA; brief +RA through midday. Current temp 26F; min temp 25F.
11/19/2014 7:00 AM 0.00 0.0 M 0.0 M Current temp 21F.
11/20/2014 7:00 AM 0.00 0.0 M 0.0 M
11/21/2014 7:50 AM 0.00 0.0 M 0.0 M
11/22/2014 7:00 AM 0.00 0.0 M 0.0 M
11/23/2014 7:00 AM 0.00 0.0 M 0.0 M
11/24/2014 7:00 AM 0.27 0.0 M 0.0 M -RA overnight. Temperature rose to 65F early this morning; current temp 64F.
11/25/2014 7:00 AM 0.00 0.0 M 0.0 M
11/26/2014 7:00 AM 0.28 0.0 M 0.0 M -RA.
11/27/2014 7:00 AM 0.94 0.2 M 0.0 M -RA; changed to -SN by around 10:30 AM then mixed with -RA until the end.
11/28/2014 7:00 AM T T M 0.0 M -RAPL midmorning.
11/29/2014 6:00 AM 0.00 0.0 M 0.0 M
11/30/2014 6:00 AM 0.00 0.0 M 0.0 M
12/1/2014 7:00 AM 0.00 0.0 M 0.0 M
12/2/2014 7:00 AM 0.48 0.0 M 0.0 M -RA; brief +SHRA around 5 PM yesterday.
12/3/2014 7:00 AM 0.51 0.0 M 0.0 M -RA.
12/4/2014 7:30 AM 0.00 0.0 M 0.0 M
12/5/2014 7:30 AM 0.02 T M 0.0 M -RAPL late last eve. -SHRA at obs time.
12/6/2014 7:30 AM 0.03 0.0 M 0.0 M -RA midday and afternoon. Sprinkles at obs time.
12/7/2014 7:45 AM 0.53 0.0 M 0.0 M -RA ended just after midnight.
12/8/2014 7:00 AM 0.00 0.0 M 0.0 M
12/9/2014 7:00 AM 0.20 0.0 M 0.0 M -RA/-DZ; no nonliquid precip overnight that I could tell. -RADZ at obs time.
12/10/2014 6:00 AM 0.20 0.0 M 0.0 M -RA most of the day.
12/11/2014 7:00 AM 0.00 0.0 M 0.0 M
12/12/2014 7:00 AM T T M 0.0 M -SHSN early afternoon.
12/13/2014 7:00 AM 0.00 0.0 M 0.0 M
12/14/2014 7:00 AM 0.00 0.0 M 0.0 M
12/15/2014 7:00 AM 0.00 0.0 M 0.0 M
12/16/2014 7:00 AM 0.00 0.0 M 0.0 M
12/17/2014 7:00 AM 0.40 0.0 M 0.0 M -RA/+SHRA midday.
12/18/2014 7:00 AM 0.00 0.0 M 0.0 M
12/19/2014 7:00 AM 0.00 0.0 M 0.0 M
12/20/2014 7:00 AM 0.00 0.0 M 0.0 M
12/21/2014 7:00 AM 0.00 0.0 M 0.0 M
12/22/2014 7:00 AM 0.00 0.0 M 0.0 M
12/23/2014 7:00 AM 0.27 0.0 M 0.0 M -RA/-DZ since yesterday morning. -DZ at obs time.
12/24/2014 6:30 AM 0.54 0.0 M 0.0 M Steady rain overnight. -DZ at obs time.
12/25/2014 7:00 AM 0.61 0.0 M 0.0 M -RA/-DZ until about 5 AM.
12/26/2014 7:00 AM 0.00 0.0 M 0.0 M
12/27/2014 7:00 AM 0.00 0.0 M 0.0 M
12/28/2014 7:00 AM 0.00 0.0 M 0.0 M
12/29/2014 7:00 AM 0.20 0.0 M 0.0 M Occasional -RA last evening and overnight.
12/30/2014 7:00 AM 0.00 0.0 M 0.0 M
12/31/2014 7:00 AM 0.00 0.0 M 0.0 M
1/1/2015 7:00 AM 0.00 0.0 M 0.0 M
1/2/2015 7:00 AM 0.00 0.0 M 0.0 M
1/3/2015 7:00 AM T 0.0 M 0.0 M Occasional -RA this morning. No evidence of nonliquid precip. 7AM obs time temp 36F with -RA.
1/4/2015 7:00 AM 0.49 0.0 M 0.0 M -RA/-DZ off and on last 24 hrs.
1/5/2015 7:00 AM 0.06 0.0 M 0.0 M Brief SHRA in the evening.
1/6/2015 7:00 AM 0.07 0.8 0.07 1.0 0.07 -SN.
1/7/2015 6:00 AM 0.11 1.0 M 1.5 M -SN ended around midday.
1/8/2015 7:00 AM T T M 1.5 M Flurries yesterday afternoon.
1/9/2015 7:00 AM 0.00 0.0 M 1.0 M
1/10/2015 6:00 AM 0.00 0.0 M T M
1/11/2015 7:00 AM 0.00 0.0 M T M
1/12/2015 7:00 AM 0.15 0.0 M 0.0 M -RA overnight and at obs time. No evidence of freezing rain. Min temp overnight 33F.
1/13/2015 7:00 AM 0.70 0.0 M 0.0 M Storm total 0.85. -RA ended late last evening.
1/14/2015 7:00 AM 0.01 0.2 M T M -SN.
1/15/2015 7:30 AM T T M 0.0 M Very light -SN ended by 8 AM yesterday.
1/16/2015 7:45 AM 0.00 0.0 M 0.0 M Heavy hoarfrost.
1/17/2015 7:00 AM 0.00 0.0 M 0.0 M
1/18/2015 7:45 AM 0.03 0.0 M 0.0 M -RA this morning.
1/19/2015 7:00 AM 0.66 M M M M -RA with occasional +RA through early afternoon.
1/20/2015 7:00 AM 0.00 0.0 M 0.0 M
1/21/2015 6:00 AM 0.00 0.0 M 0.0 M
1/22/2015 7:00 AM 0.07 0.5 M 0.0 M -SN, mixed with -RA before ending. -SHRA at obs time with temp 33F.
1/23/2015 7:00 AM 0.01 0.0 M 0.0 M -SHRA ended around 8 AM.
1/24/2015 7:00 AM 1.16 T M 0.0 M This is also NWS co-op site OXNM2. Mixed precip until early eve then steady rain.
1/25/2015 7:00 AM 0.01 0.0 M 0.0 M -DZ late morning, -SHRA early afternoon.
1/26/2015 7:00 AM 0.12 0.0 M 0.0 M Just -RA so far. 7AM temp 35F.
1/27/2015 7:00 AM 0.16 0.8 M 0.5 M THIS IS NWS CO-OP SITE OXNM2. Mixed precip during day, all -SN after 7 PM.
1/28/2015 7:00 AM T T M T M Flurries late morning.
1/29/2015 7:00 AM 0.00 0.0 M 0.0 M
1/30/2015 7:00 AM 0.04 0.1 M 0.0 M -RAPL late afternoon. "Snowfall" was all ice pellets.
1/31/2015 7:00 AM T T M 0.0 M Flurries late morning.
2/1/2015 7:00 AM 0.00 0.0 M 0.0 M
2/2/2015 7:00 AM 0.07 T M 0.0 M -SN began about 10PM, changed to -RA around 10:30PM and lasted until about 3AM. -RA again at 7 AM obs time.
2/3/2015 7:00 AM 0.01 0.0 M 0.0 M Occasional -RA ended midday.
2/4/2015 7:00 AM 0.00 0.0 M 0.0 M
2/5/2015 7:00 AM 0.00 0.0 M 0.0 M
2/6/2015 7:00 AM 0.00 0.0 M 0.0 M
2/7/2015 7:00 AM 0.00 0.0 M 0.0 M
2/8/2015 7:00 AM 0.00 0.0 M 0.0 M
2/9/2015 7:00 AM 0.00 0.0 M 0.0 M
2/10/2015 7:00 AM 0.23 0.1 M T M -RA changed to -FZRA late last eve. Light mixed wintry precip overnight ending about 6 AM.
2/11/2015 7:00 AM 0.00 0.0 M 0.0 M
2/12/2015 7:00 AM 0.00 0.0 M 0.0 M
2/13/2015 7:00 AM T T M 0.0 M Flurries late morning.
2/14/2015 7:00 AM 0.00 0.0 M 0.0 M
2/15/2015 8:00 AM 0.01 0.3 M 0.0 M Brief +SHSN last eve with cold frontal passage. Relentless cold air advection overnight; current temp 8F, the lowest temp of the winter
2/16/2015 7:00 AM 0.00 0.0 M 0.0 M
2/17/2015 7:30 AM 0.50 4.8 0.50 5.0 0.50 -SN/occasional SN ended about 6:30 AM, OVC at obs time.
2/18/2015 6:00 AM T T M 4.5 M Flurries 8-9AM after the main storm was over.
2/19/2015 7:00 AM T 0.1 M 4.5 M -SHSN last eve.
2/20/2015 7:00 AM 0.01 0.3 M 4.5 M Snow showers late last eve. Snowfall estimated due to drifting snow.
2/21/2015 7:00 AM 0.00 0.0 M 3.5 M
2/22/2015 7:00 AM 0.86 2.5 M 5.0 M -SN changed to wintry mix around 8PM then to rain around 9 PM. Snowfall estimated because it was measured several hours after the precip changeover. Snow depth affected by melting and settling.
2/23/2015 7:00 AM 0.00 0.0 M 2.0 M
2/24/2015 7:00 AM 0.00 0.0 M 1.5 M
2/25/2015 7:00 AM 0.00 0.0 M 1.5 M
2/26/2015 7:00 AM 0.14 1.7 M 3.5 M -SN, briefly SN at obs time.
2/27/2015 7:30 AM 0.06 1.4 M 3.0 M -SN ended around 10 AM. Flurries began around 5 AM and are occurring at obs time.
2/28/2015 7:45 AM T T M 3.0 M Flurries ended around 8:30AM.
3/1/2015 8:00 AM T T M 2.0 M -SN just began.
3/2/2015 7:00 AM 0.47 0.1 M 1.0 M -SN changed to -FZRAPL by 0900 then -FZRA/occasional -PL through evening. Dense fog in the evening especially after the FZRA ended.
3/3/2015 7:00 AM 0.00 0.0 M T M
3/4/2015 7:00 AM 0.07 T M T M -FZRAPL yesterday afternoon and evening. -SHRA 5-6AM today.
3/5/2015 7:00 AM 0.50 0.0 M 0.0 M Nothing but rain so far.
3/6/2015 7:00 AM 0.85 5.8 M 6.0 M Rain at previous obs time changed to PL then to SN by 8 AM. -SN with occasional +SN through about 10 PM.
3/7/2015 7:00 AM 0.00 0.0 M 5.0 M
3/8/2015 7:00 AM 0.00 0.0 M 2.0 M
3/9/2015 7:00 AM 0.00 0.0 M T M
3/10/2015 7:00 AM 0.00 0.0 M 0.0 M
3/11/2015 7:00 AM 0.35 0.0 M 0.0 M -RA overnight.
3/12/2015 7:45 AM 0.01 0.0 M 0.0 M -SHRA midmorning.
3/13/2015 7:00 AM 0.00 0.0 M 0.0 M
3/14/2015 7:45 AM 0.37 0.0 M 0.0 M -RA overnight, continuing at obs time.
3/15/2015 7:45 AM 0.26 0.0 M 0.0 M -RA ended by late afternoon.
3/16/2015 7:00 AM 0.00 0.0 M 0.0 M
3/17/2015 7:00 AM T 0.0 M 0.0 M Sprinkles last evening.
3/18/2015 7:00 AM 0.00 0.0 M 0.0 M
3/19/2015 7:00 AM 0.00 0.0 M 0.0 M
3/20/2015 7:00 AM 0.20 0.1 M T M -RA changed to -SN around 6AM. -SN at obs time.
3/21/2015 7:00 AM 0.23 0.2 M 0.0 M -SN changed to -RA midmorning. Brief -SNPL midday otherwise -RA until precip ended.
3/22/2015 7:00 AM T 0.0 M 0.0 M Sprinkles during midmorning.
3/23/2015 7:00 AM 0.00 0.0 M 0.0 M
3/24/2015 7:00 AM 0.00 0.0 M 0.0 M
3/25/2015 7:00 AM 0.00 0.0 M 0.0 M
3/26/2015 7:30 AM 0.01 0.0 M 0.0 M -SHRA mid-late morning.
3/27/2015 7:45 AM 0.92 0.0 M 0.0 M -RA/brief RA overnight.
3/28/2015 7:30 AM 0.09 0.0 M 0.0 M -RA ended late in the morning. Unseasonably cold this AM; temp at obs time 29F.
3/29/2015 7:30 AM 0.00 0.0 M 0.0 M Feels like January. Min temp 24F.
3/30/2015 7:00 AM 0.02 T M 0.0 M -SHRASNPL 1-2AM and 4-5AM.
3/31/2015 7:00 AM 0.00 0.0 M 0.0 M
4/1/2015 7:00 AM 0.02 0.0 M 0.0 M -SHRA with rumble of thunder late afternoon.
4/2/2015 7:00 AM 0.00 0.0 M 0.0 M
4/3/2015 7:00 AM 0.00 0.0 M 0.0 M
4/4/2015 7:00 AM 0.19 0.0 M 0.0 M -SHRA during the dsy yesterday into predawn today.
4/5/2015 7:00 AM 0.00 0.0 M 0.0 M
4/6/2015 7:00 AM 0.00 0.0 M 0.0 M
4/7/2015 7:00 AM 0.02 0.0 M 0.0 M -SHRA early this morning.
4/8/2015 7:00 AM 0.01 0.0 M 0.0 M -RA changed to -DZ this morning.
4/9/2015 7:30 AM 0.04 0.0 M 0.0 M Patchy rain and drizzle past 24 hours.
4/10/2015 7:30 AM 0.03 0.0 M 0.0 M -DZ overnight.
4/11/2015 7:45 AM 0.01 0.0 M 0.0 M -SHRA last eve.
4/12/2015 7:00 AM 0.00 0.0 M 0.0 M
4/13/2015 7:00 AM 0.00 0.0 M 0.0 M
4/14/2015 7:00 AM 0.14 0.0 M 0.0 M -RA began around 4AM.
4/15/2015 7:00 AM 0.84 0.0 M 0.0 M -RA through early morning today.
4/16/2015 7:00 AM 0.00 0.0 M 0.0 M
4/17/2015 7:00 AM 0.05 0.0 M 0.0 M -SHRA overnight.
4/18/2015 6:00 AM 0.01 0.0 M 0.0 M -SHRA last eve.
4/19/2015 7:00 AM 0.00 0.0 M 0.0 M
4/20/2015 7:00 AM 1.04 0.0 M 0.0 M -RA occasionally RA overnight. -SHRA at obs time.
4/21/2015 7:00 AM 0.46 0.0 M 0.0 M -SHRA ended 8AM: T. +TSRA 1730-1800: 0.18. Strong but non-severe TSRA 2000-2100: 0.12. TSRA 0100-0200: 0.16. -SHRA 0400-0500: T.
4/22/2015 7:00 AM 0.00 0.0 M 0.0 M
4/23/2015 7:30 AM T 0.0 M 0.0 M -SHRA yesterday afternoon. Present weather = VIRGA ALQDS; wouldn't be surprised if a few drops start falling. Overnight low temp 40F.
4/24/2015 7:30 AM 0.00 0.0 M 0.0 M
4/25/2015 7:30 AM 0.00 0.0 M 0.0 M
4/26/2015 7:30 AM 0.33 0.0 M 0.0 M -RA last evening.
4/27/2015 7:00 AM 0.00 0.0 M 0.0 M
4/28/2015 7:00 AM T 0.0 M 0.0 M Sprinkles around 5 PM.
4/29/2015 6:00 AM 0.00 0.0 M 0.0 M
4/30/2015 7:00 AM 0.00 0.0 M 0.0 M
5/1/2015 7:00 AM 0.02 0.0 M 0.0 M Occasional LTGCG and thunder NW-N 2-2:30PM yesterday. +TSRAGR with GR 1/2 and 0.52 precip at DCA but no precip here. -SHRA 3-5PM and 3-4AM.
5/2/2015 7:00 AM 0.00 0.0 M 0.0 M
5/3/2015 7:00 AM 0.00 0.0 M 0.0 M
5/4/2015 7:00 AM 0.00 0.0 M 0.0 M
5/5/2015 7:00 AM 0.00 0.0 M 0.0 M
5/6/2015 7:00 AM 0.14 0.0 M 0.0 M -SHRA/TSRA early evening.
5/7/2015 7:30 AM 0.00 0.0 M 0.0 M
5/8/2015 7:30 AM 0.00 0.0 M 0.0 M
5/9/2015 7:30 AM T 0.0 M 0.0 M Occasional -DZ in the predawn and at obs time.
5/10/2015 7:30 AM T 0.0 M 0.0 M -DZ until about 9AM yesterday and again starting around 7AM today.
5/11/2015 7:00 AM T 0.0 M 0.0 M Sprinkles 4-5PM.
5/12/2015 7:00 AM 0.00 0.0 M 0.0 M
5/13/2015 6:00 AM 0.00 0.0 M 0.0 M
5/14/2015 7:00 AM 0.00 0.0 M 0.0 M
5/15/2015 7:00 AM 0.00 0.0 M 0.0 M
5/16/2015 7:00 AM 0.00 0.0 M 0.0 M
5/17/2015 7:00 AM 0.50 0.0 M 0.0 M Nonsevere TSRA 6-8PM yesterday. -SHRA just after midnight and around 6:30AM today.
5/18/2015 7:00 AM 0.00 0.0 M 0.0 M
5/19/2015 7:00 AM 1.16 0.0 0.00 M M Weak TSRA 5-530PM. Nonsevere +TSRA 11:40PM-1:00AM.
5/20/2015 7:00 AM 0.00 0.0 M 0.0 M
5/21/2015 7:30 AM T 0.0 M 0.0 M -SHRA just started.
5/22/2015 7:30 AM 0.34 0.0 M 0.0 M -RA during the day.
5/23/2015 7:45 AM 0.00 0.0 M 0.0 M
5/24/2015 7:00 AM 0.00 0.0 M 0.0 M
5/25/2015 7:00 AM 0.00 0.0 M 0.0 M
5/26/2015 7:00 AM 0.00 0.0 M 0.0 M
5/27/2015 6:00 AM 0.00 0.0 M 0.0 M
5/28/2015 7:00 AM 0.00 0.0 M 0.0 M
5/29/2015 7:00 AM 0.07 0.0 M 0.0 M -TSRA last evening.
5/30/2015 7:00 AM 0.00 0.0 M 0.0 M
5/31/2015 7:00 AM 0.00 0.0 M 0.0 M
6/1/2015 7:00 AM 0.03 0.0 M 0.0 M -SHRA in the predawn.
6/2/2015 7:00 AM 1.67 0.0 M 0.0 M Waves of +TSRA mostly in the later evening and predawn.
6/3/2015 7:00 AM 0.14 0.0 M 0.0 M Occasional -RA/-DZ last 24 hrs.
6/4/2015 7:30 AM 0.11 0.0 M 0.0 M Occasional -RADZ overnight.
6/5/2015 7:00 AM 0.50 0.0 M 0.0 M More -RA/-DZ the past 24 hours.
6/6/2015 7:30 AM T 0.0 M 0.0 M -DZ ended by 8 AM.
6/7/2015 7:00 AM 0.00 0.0 M 0.0 M
6/8/2015 7:00 AM 0.00 0.0 M 0.0 M
6/9/2015 7:00 AM 0.20 0.0 M 0.0 M Non-severe TSRA 5:30-6PM and 10-10:30PM. -SHRA 6-6:30AM today.
6/10/2015 7:00 AM 0.00 0.0 M 0.0 M
6/11/2015 7:00 AM 0.00 0.0 M 0.0 M
6/12/2015 7:00 AM 0.00 0.0 M 0.0 M
6/13/2015 7:00 AM 0.02 M M M M Dissipating -TSRA 6-7PM.
6/14/2015 7:00 AM T 0.0 M 0.0 M -TSRA just after midnight.
6/15/2015 7:00 AM 0.41 0.0 M 0.0 M Non-severe TSRA 6-7PM.
6/16/2015 7:00 AM 0.01 0.0 M 0.0 M -SHRA last evening.
6/17/2015 7:00 AM 0.00 0.0 M 0.0 M
6/18/2015 7:30 AM 0.30 0.0 M 0.0 M -SHRA overnight.
6/19/2015 7:30 AM 0.67 0.0 M 0.0 M Non-severe +TSRA 6-8PM: 0.65. -SHRA 1-2AM: 0.02.
6/20/2015 7:45 AM T 0.0 M 0.0 M -SHRA last evening.
6/21/2015 7:45 AM 3.15 M M M M Dissipating -TSRA 6-7PM. Very strong but non-severe ++TSRA last evening; estimate of about 3 inches between 8-10PM. Only -SHRA estimated between 4-6AM today; about 0.05 inch.
6/22/2015 7:00 AM 0.00 0.0 M 0.0 M
6/23/2015 7:00 AM 0.00 0.0 M 0.0 M
6/24/2015 7:00 AM 0.57 0.0 M 0.0 M Strong but non-severe TSRA last evening, per neighbors.
6/25/2015 7:30 AM 0.00 0.0 M 0.0 M
6/26/2015 7:30 AM 0.69 0.0 M 0.0 M More non-severe +TSRA 9-10PM.
6/27/2015 7:00 AM 0.23 0.0 M 0.0 M -RA began 2 AM.
6/28/2015 7:00 AM 2.02 0.0 M 0.0 M -RA 7-10AM, then +RA until about 6PM. -SHRA 8-10PM, and 2-3AM today.
6/29/2015 7:00 AM 0.00 0.0 M 0.0 M
6/30/2015 7:00 AM 0.00 0.0 M 0.0 M
7/1/2015 7:30 AM 0.73 0.0 M 0.0 M Borderline severe slam-bang +TSRA just after midnight EDT to welcome July in...
7/2/2015 7:45 AM 0.90 0.0 M 0.0 M Training +TSRA 8-9PM in a small narrow area prompted flash flood warning, right in Oxon Hill. Considerable street flooding but nothing long-lasting. 0.87 from training thunderstorms. 0.03 from -SHRA 6-7PM.
7/3/2015 7:30 AM 0.01 0.0 M 0.0 M -SDRA during the day.
7/4/2015 6:00 AM 0.04 0.0 M 0.0 M -SHRA overnight.
7/5/2015 7:00 AM 0.98 0.0 M 0.0 M SHRA 9-11AM. +TSRA 4-6PM.
7/6/2015 5:45 AM 0.01 0.0 M 0.0 M -SHRA 1-2AM and 5-5:30AM.
7/7/2015 5:45 AM 0.24 0.0 M 0.0 M Brief +SHRA evening.
7/8/2015 7:00 AM 0.00 0.0 M 0.0 M
7/9/2015 7:00 AM 1.40 0.0 M 0.0 M Heavy showers and a brief +TSRA in the afternoon.
7/10/2015 7:00 AM T 0.0 M 0.0 M -SHRA last evening.
7/11/2015 7:00 AM 0.13 0.0 M 0.0 M -SHRA overnight.
7/12/2015 7:00 AM 0.11 0.0 M 0.0 M -SHRA ended by midmorning.
7/13/2015 7:00 AM 0.00 0.0 M 0.0 M
7/14/2015 7:00 AM 0.11 0.0 M 0.0 M -SHRA 8AM-noon and 8-9PM.
7/15/2015 7:00 AM 0.01 0.0 M 0.0 M -SHRA just after midnight.
7/16/2015 7:30 AM 0.04 0.0 M 0.0 M Brief SHRA around 5:30PM.
7/17/2015 7:00 AM 0.00 0.0 M 0.0 M
7/18/2015 7:00 AM 0.00 0.0 M 0.0 M
7/19/2015 7:00 AM 0.02 0.0 M 0.0 M -SHRA late yesterday morning.
7/20/2015 7:00 AM 0.00 0.0 M 0.0 M
7/21/2015 7:00 AM 0.00 0.0 M 0.0 M
7/22/2015 5:45 AM T 0.0 M 0.0 M Sprinkles around noon and 10PM.
7/23/2015 7:00 AM 0.00 0.0 M 0.0 M
7/24/2015 7:00 AM 0.00 0.0 M 0.0 M
7/25/2015 7:00 AM 0.00 0.0 M 0.0 M
7/26/2015 7:00 AM 0.00 0.0 M 0.0 M
7/27/2015 5:45 AM 0.01 0.0 M 0.0 M -TSRA started around 5 AM.
7/28/2015 5:45 AM 0.26 0.0 M 0.0 M Weakening TSRA afternoon.
7/29/2015 5:45 AM T 0.0 M 0.0 M -SHRA around 5 PM. Thunder around 6 pm.
7/30/2015 5:45 AM T 0.0 M 0.0 M Sprinkles around 4PM.
7/31/2015 7:00 AM 0.30 0.0 M 0.0 M TSRA midafternoon.
8/1/2015 7:00 AM 0.00 0.0 M 0.0 M
8/2/2015 7:00 AM T 0.0 M 0.0 M Sprinkles around 2 PM.
8/3/2015 7:00 AM 0.00 0.0 M 0.0 M
8/4/2015 7:00 AM 0.00 0.0 M 0.0 M
8/5/2015 7:00 AM 0.07 0.0 M 0.0 M -SHRA around 6PM. Few grumbles distant thunder around that time. Brief SHRA 9-915PM.
8/6/2015 7:00 AM 0.00 0.0 M 0.0 M
8/7/2015 7:00 AM 0.14 0.0 M 0.0 M -SHRA 9-12PM. SHRA 3-5AM.
8/8/2015 7:00 AM 0.00 0.0 M 0.0 M
8/9/2015 7:00 AM 0.00 0.0 M 0.0 M
8/10/2015 7:00 AM 0.00 0.0 M M M
8/11/2015 7:00 AM 0.29 M M M M
8/12/2015 7:00 AM 0.00 0.0 M M M
8/13/2015 7:00 AM 0.00 0.0 M 0.0 M
8/14/2015 7:00 AM 0.00 0.0 M 0.0 M
8/15/2015 7:00 AM 0.00 0.0 M 0.0 M
8/16/2015 7:00 AM 0.00 0.0 M 0.0 M
8/17/2015 7:00 AM 0.00 0.0 M 0.0 M
8/18/2015 7:00 AM 0.00 0.0 M M M
8/19/2015 7:00 AM 0.00 0.0 M M M
8/20/2015 7:00 AM 0.00 0.0 M M M
8/21/2015 7:00 AM 0.27 0.0 M 0.0 M SHRA 3-4 AM. Weakening TSRA 8-9 pm.
8/22/2015 7:00 AM 0.00 0.0 M 0.0 M
8/23/2015 7:00 AM 0.00 0.0 M 0.0 M
8/24/2015 7:00 AM 0.00 0.0 M 0.0 M
8/25/2015 7:00 AM 0.38 0.0 M 0.0 M -TSRA 8-9PM. +SHRA midnight-12:30AM.
8/26/2015 7:00 AM 0.00 0.0 M 0.0 M
8/27/2015 7:00 AM 0.00 0.0 M 0.0 M
8/28/2015 7:00 AM 0.00 0.0 M 0.0 M
8/29/2015 7:00 AM 0.00 0.0 M 0.0 M
8/30/2015 7:00 AM 0.00 0.0 M 0.0 M
8/31/2015 7:00 AM T 0.0 M 0.0 M Sprinkles late last eve.
9/1/2015 7:00 AM T 0.0 M 0.0 M Sprinkles midday.
9/2/2015 7:00 AM 0.00 0.0 M 0.0 M
9/3/2015 7:00 AM 0.00 0.0 M 0.0 M
9/4/2015 7:00 AM 0.33 0.0 M 0.0 M TSRA last eve.
9/5/2015 7:00 AM 0.00 0.0 M 0.0 M
9/6/2015 7:00 AM 0.00 0.0 M 0.0 M
9/7/2015 7:00 AM 0.00 0.0 M 0.0 M
9/8/2015 7:00 AM 0.00 0.0 M 0.0 M
9/9/2015 7:00 AM 0.00 0.0 M 0.0 M
9/10/2015 7:00 AM 0.02 0.0 M 0.0 M Overnight -SHRA. TS to SE 8:30-9PM.
9/11/2015 7:00 AM 0.05 0.0 M 0.0 M -SHRA 3-4PM and 10-11PM.
9/12/2015 7:00 AM 0.00 0.0 M 0.0 M
9/13/2015 7:00 AM 0.39 0.0 M 0.0 M -SHRA mid-morning until midafternoon; brief +TSRA 1:25 PM.
9/14/2015 7:00 AM 0.00 0.0 M 0.0 M
9/15/2015 7:00 AM 0.00 0.0 M 0.0 M
9/16/2015 7:00 AM 0.00 0.0 M 0.0 M
9/17/2015 7:00 AM 0.00 0.0 M 0.0 M
9/18/2015 7:00 AM 0.00 0.0 M 0.0 M
9/19/2015 7:00 AM 0.00 0.0 M 0.0 M
9/20/2015 7:00 AM 0.00 0.0 M 0.0 M
9/21/2015 7:00 AM 0.00 0.0 M 0.0 M
9/22/2015 7:00 AM 0.21 0.0 M 0.0 M -RA.
9/23/2015 7:00 AM 0.00 0.0 M 0.0 M
9/24/2015 7:00 AM 0.00 0.0 M 0.0 M
9/25/2015 7:00 AM 0.00 0.0 M 0.0 M
9/26/2015 7:00 AM T M M M M -SHRA in the afternoon.
9/27/2015 7:45 AM T 0.0 M 0.0 M Sprinkles 7-8PM and 6AM to obs time.
9/28/2015 7:00 AM T 0.0 M 0.0 M -SHRA ended around 8AM.
9/29/2015 7:00 AM 0.00 0.0 M 0.0 M
9/30/2015 7:00 AM 1.52 0.0 M 0.0 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