Station Overview Station Location
Station Number MD-PG-47 Latitude 38.996389
Station Name Greenbelt 2.2 E Longitude -76.84444
County Prince George's Elevation (ft) 214



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 3.55 3.19 31 2.69 26 0.50 5 2 9 1 0.0 0 0
Nov 14 3.50 2.96 30 2.81 21 0.15 9 2 6 0 0.0 0 0
Dec 14 3.30 2.65 31 1.63 18 1.02 13 2 6 0 0.0 0 0
Jan 15 3.02 4.83 31 0.46 16 4.37 15 6 3 1 3.7 2 2
Feb 15 2.80 1.79 28 0.39 20 1.40 8 3 3 1 0.0 0 0
March 15 3.76 4.76 31 1.30 21 3.46 10 5 4 1 0.0 0 0
April 15 3.39 3.42 30 3.06 17 0.36 13 5 8 0 0.0 0 0
May 15 4.35 1.51 31 1.27 25 0.24 6 2 4 1 0.0 0 0
June 15 3.79 10.06 30 3.73 13 6.33 17 3 8 0 0.0 0 0
July 15 4.13 3.41 32 1.86 13 1.55 19 4 5 0 0.0 0 0
Aug 15 3.41 2.02 31 0.98 16 1.04 15 3 5 1 0.0 0 0
Sept 15 3.90 4.02 30 0.21 18 3.81 12 3 2 1 0.0 0 0
Water Year Totals: 42.90" 44.62" 366 days 20.39" 224 24.23" 142 days 40 63 days 7 days 3.7" 2 days 2 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 0.06
10/2/2014 0.00
10/3/2014 0.00
10/4/2014 0.19
10/5/2014 0.00
10/6/2014 0.00
10/7/2014 0.00
10/8/2014 0.19
10/9/2014 0.00
10/10/2014 0.00
10/11/2014 **
10/12/2014 0.48
10/13/2014 0.13
10/14/2014 T
10/15/2014 0.73
10/16/2014 0.08
10/17/2014 0.00
10/18/2014 0.00
10/19/2014 0.00
10/20/2014 0.00
10/21/2014 0.01
10/22/2014 1.10
10/23/2014 0.20
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 **
10/30/2014 **
10/31/2014 0.02
11/1/2014 0.00
11/2/2014 0.00
11/3/2014 0.00
11/4/2014 0.00
11/5/2014 0.00
11/6/2014 0.53
11/7/2014 **
11/8/2014 **
11/9/2014 **
11/10/2014 **
11/11/2014 **
11/12/2014 **
11/13/2014 0.00
11/14/2014 0.06
11/15/2014 0.00
11/16/2014 0.00
11/17/2014 0.38
11/18/2014 0.44
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 0.36
11/25/2014 0.00
11/26/2014 1.04
11/27/2014 **
11/28/2014 0.15
11/29/2014 0.00
11/30/2014 0.00
12/1/2014 0.20
12/2/2014 0.39
12/3/2014 0.35
12/4/2014 0.00
12/5/2014 **
12/6/2014 **
12/7/2014 0.62
12/8/2014 **
12/9/2014 0.40
12/10/2014 0.00
12/11/2014 0.00
12/12/2014 0.02
12/13/2014 0.00
12/14/2014 0.00
12/15/2014 0.00
12/16/2014 0.00
12/17/2014 0.38
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 0.29
12/24/2014 **
12/25/2014 **
12/26/2014 **
12/27/2014 **
12/28/2014 **
12/29/2014 **
12/30/2014 **
12/31/2014 **
Day of YearDaily PrcpMultiday Prcp
1/1/2015 **
1/2/2015 **
1/3/2015 **
1/4/2015 1.25
1/5/2015 0.10
1/6/2015 0.26
1/7/2015 0.00
1/8/2015 0.00
1/9/2015 0.00
1/10/2015 0.00
1/11/2015 0.00
1/12/2015 **
1/13/2015 0.82
1/14/2015 T
1/15/2015 0.00
1/16/2015 0.00
1/17/2015 0.00
1/18/2015 **
1/19/2015 0.79
1/20/2015 0.00
1/21/2015 0.10
1/22/2015 **
1/23/2015 **
1/24/2015 1.18
1/25/2015 0.00
1/26/2015 **
1/27/2015 0.28
1/28/2015 0.00
1/29/2015 **
1/30/2015 0.05
1/31/2015 0.00
2/1/2015 0.00
2/2/2015 0.17
2/3/2015 0.00
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 0.09
2/11/2015 0.00
2/12/2015 **
2/13/2015 T
2/14/2015 0.00
2/15/2015 **
2/16/2015 **
2/17/2015 **
2/18/2015 0.42
2/19/2015 T
2/20/2015 0.00
2/21/2015 **
2/22/2015 0.98
2/23/2015 0.00
2/24/2015 0.00
2/25/2015 0.00
2/26/2015 0.13
2/27/2015 0.00
2/28/2015 0.00
3/1/2015 **
3/2/2015 0.67
3/3/2015 **
3/4/2015 0.14
3/5/2015 **
3/6/2015 1.15
3/7/2015 0.00
3/8/2015 0.00
3/9/2015 0.00
3/10/2015 0.00
3/11/2015 0.56
3/12/2015 0.00
3/13/2015 0.00
3/14/2015 **
3/15/2015 0.74
3/16/2015 0.00
3/17/2015 T
3/18/2015 0.00
3/19/2015 0.00
3/20/2015 **
3/21/2015 0.76
3/22/2015 0.00
3/23/2015 0.00
3/24/2015 0.00
3/25/2015 0.00
3/26/2015 0.01
3/27/2015 0.70
3/28/2015 0.00
3/29/2015 0.00
3/30/2015 0.03
3/31/2015 0.00
Day of YearDaily PrcpMultiday Prcp
4/1/2015 0.05
4/2/2015 0.00
4/3/2015 0.15
4/4/2015 **
4/5/2015 **
4/6/2015 0.00
4/7/2015 0.03
4/8/2015 0.71
4/9/2015 0.05
4/10/2015 0.05
4/11/2015 **
4/12/2015 **
4/13/2015 0.00
4/14/2015 **
4/15/2015 0.00
4/16/2015 **
4/17/2015 0.16
4/18/2015 0.00
4/19/2015 0.00
4/20/2015 1.40
4/21/2015 0.62
4/22/2015 0.00
4/23/2015 0.00
4/24/2015 0.00
4/25/2015 **
4/26/2015 **
4/27/2015 0.20
4/28/2015 0.00
4/29/2015 0.00
4/30/2015 0.00
5/1/2015 T
5/2/2015 0.00
5/3/2015 0.00
5/4/2015 0.00
5/5/2015 0.00
5/6/2015 0.08
5/7/2015 0.00
5/8/2015 0.00
5/9/2015 0.01
5/10/2015 **
5/11/2015 **
5/12/2015 **
5/13/2015 0.00
5/14/2015 0.00
5/15/2015 0.00
5/16/2015 **
5/17/2015 0.24
5/18/2015 0.00
5/19/2015 0.90
5/20/2015 0.00
5/21/2015 0.00
5/22/2015 0.28
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 0.00
5/30/2015 0.00
5/31/2015 0.00
6/1/2015 0.16
6/2/2015 1.60
6/3/2015 0.06
6/4/2015 0.04
6/5/2015 **
6/6/2015 **
6/7/2015 **
6/8/2015 0.46
6/9/2015 1.28
6/10/2015 0.00
6/11/2015 0.00
6/12/2015 0.00
6/13/2015 **
6/14/2015 **
6/15/2015 1.47
6/16/2015 0.00
6/17/2015 0.00
6/18/2015 0.54
6/19/2015 0.03
6/20/2015 **
6/21/2015 **
6/22/2015 **
6/23/2015 **
6/24/2015 **
6/25/2015 **
6/26/2015 **
6/27/2015 **
6/28/2015 **
6/29/2015 4.40
6/30/2015 0.02
Day of YearDaily PrcpMultiday Prcp
7/1/2015 0.80
7/2/2015 0.16
7/3/2015 **
7/4/2015 0.32
7/5/2015 **
7/6/2015 **
7/7/2015 **
7/8/2015 **
7/9/2015 **
7/10/2015 **
7/11/2015 **
7/12/2015 **
7/13/2015 **
7/14/2015 **
7/15/2015 0.98
7/16/2015 0.00
7/17/2015 0.00
7/18/2015 **
7/19/2015 **
7/20/2015 0.02
7/21/2015 0.00
7/22/2015 0.00
7/23/2015 0.00
7/24/2015 0.00
7/25/2015 0.00 **
7/26/2015 **
7/27/2015 0.23
7/28/2015 0.41
7/29/2015 0.00
7/30/2015 0.25
7/31/2015 0.24
8/1/2015 0.00
8/2/2015 0.00
8/3/2015 0.00
8/4/2015 0.00
8/5/2015 T
8/6/2015 0.00
8/7/2015 0.03
8/8/2015 **
8/9/2015 **
8/10/2015 0.12
8/11/2015 0.45
8/12/2015 0.04
8/13/2015 0.00
8/14/2015 0.00
8/15/2015 **
8/16/2015 **
8/17/2015 0.00
8/18/2015 0.00
8/19/2015 0.00
8/20/2015 0.18
8/21/2015 0.28
8/22/2015 **
8/23/2015 **
8/24/2015 **
8/25/2015 **
8/26/2015 **
8/27/2015 **
8/28/2015 **
8/29/2015 **
8/30/2015 0.92
8/31/2015 0.00
9/1/2015 0.00
9/2/2015 0.00
9/3/2015 0.00
9/4/2015 0.00
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 0.04
9/11/2015 T
9/12/2015 **
9/13/2015 **
9/14/2015 0.16
9/15/2015 0.00
9/16/2015 0.00
9/17/2015 0.00
9/18/2015 0.00
9/19/2015 **
9/20/2015 **
9/21/2015 0.00
9/22/2015 0.17
9/23/2015 0.00
9/24/2015 0.00
9/25/2015 **
9/26/2015 **
9/27/2015 **
9/28/2015 **
9/29/2015 **
9/30/2015 3.65



Observation Date Observation Time Precipitation Snowfall Snowfall SWE Snow Depth Snow SWE Notes
10/1/2014 9:50 AM 0.06 M M M M 0.06" from overnight rain, recorded at 9:50 AM.
10/2/2014 7:00 AM 0.00 0.0 M M M
10/3/2014 7:00 AM 0.00 0.0 M M M
10/4/2014 11:24 AM 0.19 M M M M 0.19" from evening and overnight rain; recorded at 11:24 AM.
10/5/2014 7:00 AM 0.00 0.0 M M M
10/6/2014 7:00 AM 0.00 0.0 M M M
10/7/2014 7:00 AM 0.00 0.0 M M M
10/8/2014 10:01 AM 0.19 M M M M Late morning/early afternoon light rain on 10/07/14; 0.01" recorded at 3:40 PM (APE). Evening storms provided another 0.18" rain (recorded 10:01 AM 10/8/14).
10/9/2014 7:00 AM 0.00 0.0 M M M
10/10/2014 7:00 AM 0.00 0.0 M M M
10/13/2014 3:31 PM 0.13 M M M M Rain stops about 9:30 AM. I am told at gatehouse that it started "about an hour ago"; 0.04" at 9:38. +0.09" additional rain by 3:31 PM (APE).
10/14/2014 12:57 PM T M M M M Trace in gauge recorded 12:57 PM.
10/15/2014 5:50 PM 0.73 0.0 M M M No rain before 11:05 AM. Tornado warning for much of NW Prince George's County in early afternoon. 0.02" at 1:07 PM +0.71" at 5:50
10/16/2014 5:31 PM 0.08 M M M M 0.07" at 9:09 AM +0.01" at 5:31 PM.
10/17/2014 7:00 AM 0.00 0.0 M M M
10/18/2014 7:00 AM 0.00 0.0 M M M
10/19/2014 7:00 AM 0.00 0.0 M M M
10/20/2014 7:00 AM 0.00 0.0 M M M
10/21/2014 1:05 PM 0.01 M M M M 0.01" in gauge from overnight rain, recorded at 1:05 PM.
10/22/2014 10:08 AM 1.10 M M M M First sprinkles at 5:29 PM yesterday 10/21/14. 1.10" at 10:08 AM today, with light rain continuing.
10/23/2014 10:35 AM 0.20 M M M M Morning rain continued 10/22/14 with +0.15" at 2:17 PM. Rain intermittent thereafter, with +0.05" at 5:43 +trace at 5:59. No measurable rain thereafter. We were in a low pressure gyre during the last day or so that drifted very very slowly east.
10/24/2014 7:00 AM 0.00 0.0 M M M
10/25/2014 7:00 AM 0.00 0.0 M M M
10/26/2014 7:00 AM 0.00 0.0 M M M
10/27/2014 7:00 AM 0.00 0.0 M M M
10/28/2014 7:00 AM 0.00 0.0 M M M
11/1/2014 7:00 AM 0.00 0.0 M M M
11/2/2014 7:00 AM 0.00 0.0 M M M
11/3/2014 7:00 AM 0.00 0.0 M M M
11/4/2014 7:00 AM 0.00 0.0 M M M
11/5/2014 7:00 AM 0.00 0.0 M M M
11/6/2014 3:31 PM 0.53 M M M M 0.44" recorded at 10:57 AM from rain beginning 5:35 PM yesterday, ending around 8 AM today. Line of showers passed through today in mid afternoon. Rain stopped; +0.09" at 3:31; showers passed.
11/14/2014 9:55 AM 0.06 M M M M 0.06" from last evening's rain.
11/15/2014 7:00 AM 0.00 0.0 M M M
11/16/2014 7:00 AM 0.00 0.0 M M M
11/17/2014 10:04 AM 0.38 M M M M Rain began late yesterday. 0.38" at 10:04 AM.
11/18/2014 7:00 AM 0.44 M M M M +0.42" at 2:16 PM 11/17 +0.02" at 6:40.
11/19/2014 7:00 AM 0.00 0.0 M M M
11/20/2014 7:00 AM 0.00 0.0 M M M
11/21/2014 7:00 AM 0.00 0.0 M M M
11/22/2014 7:00 AM 0.00 0.0 M M M
11/23/2014 7:00 AM 0.00 0.0 M M M
11/24/2014 9:56 AM 0.36 M M M M 0.36" from overnight rain.
11/25/2014 7:00 AM 0.00 0.0 M M M
11/26/2014 12:34 PM 1.04 M M M M Lightly falling snow with ca 1.0" on ground at 11:48 AM. 1.04" rain+melted snow at 12"34 PM. Light rain at 12:46. No precipitation at 1:20.
11/29/2014 12:55 PM 0.00 0.0 M M M
11/30/2014 7:00 AM 0.00 0.0 M M M
12/1/2014 7:13 PM 0.20 M M M M Rain began after 4:00 PM. Light rain, running wet walks and roads at 5:02. 0.20" with light rain at 7:13.
12/2/2014 9:57 AM 0.39 M M M M +0.39" from end of yesterday's storm; recorded at 9:57 AM
12/3/2014 10:03 AM 0.35 M M M M 0.35" at 10:03 AM. No additional precipitation through 3:40 PM.
12/4/2014 7:00 AM 0.00 0.0 M M M
12/10/2014 7:00 AM 0.00 0.0 M M M
12/11/2014 7:00 AM 0.00 0.0 M M M
12/12/2014 7:00 AM 0.02 0.0 M 0.0 M Precipitation observed ca. 1 mile west of station MD-PG-47 on 12/11/14. Very light fine snow begins ca. 12:30 PM. From restaurant window, observe snow (with large flakes) becoming quite heavy by ca. 1:15. Dropping off by 2:00; over by about 2:30. No snow on ground, sidewalks partially dry by 3:45. Gauge not available, so estimate precipitation at 0.02". No additional precipitation thereafter.
12/13/2014 7:00 AM 0.00 0.0 M M M
12/14/2014 7:00 AM 0.00 0.0 M M M
12/15/2014 7:00 AM 0.00 0.0 M M M
12/16/2014 7:00 AM 0.00 0.0 M M M
12/17/2014 7:45 AM 0.38 M M M M 0.38" in gauge at 7:45 AM from yesterday's rain.
12/18/2014 7:00 AM 0.00 0.0 M M M
12/19/2014 7:00 AM 0.00 0.0 M M M
12/20/2014 7:00 AM 0.00 0.0 M M M
12/21/2014 7:00 AM 0.00 0.0 M M M
12/22/2014 7:00 AM 0.00 0.0 M M M
12/23/2014 10:48 AM 0.29 M M M M Fog (visibility ca. 1/4 mile), 0.29" from yesterday's rain, recorded at 10:48 AM.
1/5/2015 12:02 PM 0.10 M M M M 0.10" from shower last evening 1/4/15.
1/6/2015 5:20 PM 0.26 2.7 0.26 2.7 0.26 2.7" snow (0.16" H2O) from morning precipitation, recorded at 5:20 PM.
1/7/2015 7:00 AM 0.00 0.0 M M M
1/8/2015 7:00 AM 0.00 0.0 M M M
1/9/2015 7:00 AM 0.00 0.0 M M M
1/10/2015 7:00 AM 0.00 0.0 M M M
1/11/2015 7:00 AM 0.00 0.0 M M M
1/14/2015 9:00 AM T T M T M Trace of snow in early morning.
1/15/2015 7:00 AM 0.00 0.0 M M M
1/16/2015 7:00 AM 0.00 0.0 M M M
1/17/2015 7:00 AM 0.00 0.0 M M M
1/20/2015 7:00 AM 0.00 0.0 M M M
1/21/2015 5:13 PM 0.10 1.0 0.10 1.0 0.10 Wet snow. First flakes at 12:03 PM. Light snow by 12:28; ground obscured at 12:42. 0.9" snow at 1:53; 1.1" (max) at 2:28. Only a few flakes falling (with a scattering of grauple on ground) at 2:57. 0.10" melt at 5:13.
1/25/2015 7:00 AM 0.00 0.0 M M M
1/28/2015 7:00 AM 0.00 0.0 M M M
1/31/2015 7:00 AM 0.00 0.0 M M M
2/1/2015 7:00 AM 0.00 0.0 M M M
2/2/2015 12:10 PM 0.17 M M M M 0.17" at 12:10 PM.
2/3/2015 7:00 AM 0.00 0.0 M M M
2/4/2015 7:00 AM 0.00 0.0 M M M
2/5/2015 7:00 AM 0.00 0.0 M M M
2/6/2015 7:00 AM 0.00 0.0 M M M
2/7/2015 7:00 AM 0.00 0.0 M M M
2/8/2015 7:00 AM 0.00 0.0 M M M
2/9/2015 7:00 AM 0.00 0.0 M M M
2/10/2015 1:20 PM 0.09 M M M M 0.09" from overnight freezing rain, recorded at 1:20 PM.
2/11/2015 7:00 AM 0.00 0.0 M M M
2/14/2015 7:00 AM 0.00 0.0 M M M
2/19/2015 9:53 AM T M M M M Although there was light snow around the area last evening, I could not find any quantitative evidence for it this morning here (I had measurable snow at MD-PG-12 last night before the wind came up). At 9:53 AM I found no measurable catch of snow, but considerable evidence of wind action: areas swept bare, drifts to 8-10 inches, and wide areas of ripples, with some in the nature of thin stacked irregular shelves -- all very lovely and interesting. I assume that more than a trace fell, but this is just "anecdotal evidence", if that.
2/20/2015 7:00 AM 0.00 0.0 M M M
2/23/2015 7:00 AM 0.00 0.0 M M M
2/24/2015 7:00 AM 0.00 0.0 M M M
2/25/2015 7:00 AM 0.00 0.0 M M M
2/26/2015 2:02 PM 0.13 M M M M 0.13" melt from captured overnight-morning snow.
2/27/2015 7:00 AM 0.00 0.0 M M M
2/28/2015 7:00 AM 0.00 0.0 M M M
3/7/2015 7:00 AM 0.00 0.0 M M M
3/8/2015 7:00 AM 0.00 0.0 M M M
3/9/2015 7:00 AM 0.00 0.0 M M M
3/10/2015 7:00 AM 0.00 0.0 M M M
3/11/2015 10:22 AM 0.56 M M M M Light rain by 1:55 PM yesterday 3/10/15; +0.06” at 3:15 +0.22” at 7:18 +0.28” at 10:22 AM 3/11/15.
3/12/2015 7:00 AM 0.00 0.0 M M M
3/13/2015 7:00 AM 0.00 0.0 M M M
3/16/2015 7:00 AM 0.00 0.0 M M M
3/17/2015 7:00 AM T M M M M Brief sprinkles at 10:17 AM.
3/18/2015 7:00 AM 0.00 0.0 M M M
3/19/2015 7:00 AM 0.00 0.0 M M M
3/22/2015 7:00 AM 0.00 0.0 M M M
3/23/2015 7:00 AM 0.00 0.0 M M M
3/24/2015 7:00 AM 0.00 0.0 M M M
3/25/2015 7:00 AM 0.00 0.0 M M M
3/26/2015 7:00 AM 0.01 M M M M Wet; 0.01" at 10:55 AM yesterday 3/25/15. No subsequent measurable precipitation.
3/27/2015 12:19 PM 0.70 M M M M 0.04" at 10:10 AM yesterday 3/26/15 +0.04" at 3:02. +0.62" at 12:19 PM today.
3/28/2015 7:00 AM 0.00 0.0 M M M
3/29/2015 7:00 AM 0.00 0.0 M M M
3/30/2015 3:38 PM 0.03 M M M M 0.03" from early morning rain; recorded 3:38 PM.
3/31/2015 7:00 AM 0.00 0.0 M M M
4/1/2015 9:00 AM 0.05 M M M M Rain began after 3:20 PM yesterday 3/31/15; 0.05" at 9:00 AM today.
4/2/2015 7:00 AM 0.00 0.0 M M M
4/3/2015 6:51 PM 0.15 0.0 M M M No rain until after 7 AM. 0.15" at 6:51 PM.
4/7/2015 1:35 PM 0.03 M M M M
4/8/2015 10:05 AM 0.71 M M M M
4/9/2015 12:09 PM 0.05 M M M M
4/10/2015 10:10 AM 0.05 M M M M
4/18/2015 7:00 AM 0.00 0.0 M M M
4/19/2015 7:00 AM 0.00 0.0 M M M
4/20/2015 2:18 PM 1.40 M M M M 1.40" from last night's rain.
4/21/2015 7:00 AM 0.62 M M M M First (large) raindrops at 6:03 PM yesterday 4/20/15. Hail began 6:04; with heavy rain and wind (waves or sheets of rain swept across the parking lot). Rain slackened, hail became infrequent at 6:06. Moderate rain, no hail at 6:07. Rain only light by 6:10; a lovely rainbow appeared, complete from ground to crown at 6:12; upper third gone by 6:13; rain stopped by 6:14. Very faint lower leg(s) of secondary bow were evident occasionally. Total rain 0.17”. Evening thunderstorm and overnight rain provided additional 0.45”.
4/22/2015 7:00 AM 0.00 0.0 M M M
4/23/2015 7:00 AM 0.00 0.0 M M M
4/24/2015 7:00 AM 0.00 0.0 M M M
4/28/2015 7:00 AM 0.00 0.0 M M M
4/29/2015 7:00 AM 0.00 0.0 M M M
4/30/2015 7:00 AM 0.00 0.0 M M M
5/1/2015 10:14 AM T M M M M Trace of rain in gauge at 10:14 AM. No further precipitation through 5:45 PM.
5/2/2015 7:00 AM 0.00 0.0 M M M
5/3/2015 7:00 AM 0.00 0.0 M M M
5/4/2015 7:00 AM 0.00 0.0 M M M
5/5/2015 7:00 AM 0.00 0.0 M M M
5/6/2015 11:35 AM 0.08 M M M M Gathering clouds, first raindrops at 6:27 PM yesterday 5/5/15. 0.08" total rain recorded at 11:35 AM today.
5/7/2015 7:00 AM 0.00 0.0 M M M
5/8/2015 7:00 AM 0.00 0.0 M M M
5/9/2015 11:52 AM 0.01 M M M M Morning rain. 0.01" at 11L52 (APE).
5/14/2015 7:00 AM 0.00 0.0 M M M
5/15/2015 7:00 AM 0.00 0.0 M M M
5/18/2015 7:00 AM 0.00 0.0 M M M
5/19/2015 12:18 PM 0.90 M M M M No rain before 6:20 PM yesterday 5/18/15. 0.90" subsequently. Recorded at 12:18 PM today.
5/20/2015 7:00 AM 0.00 0.0 M M M
5/21/2015 7:00 AM 0.00 0.0 M M M
5/22/2015 7:00 AM 0.28 M M M M 0.06" at 11:26 AM yesterday 5/21/15. +0.22" at 5:27 PM (APE).
5/23/2015 7:00 AM 0.00 0.0 M M M
5/24/2015 7:00 AM 0.00 0.0 M M M
5/25/2015 7:00 AM 0.00 0.0 M M M
5/26/2015 7:00 AM 0.00 0.0 M M M
5/27/2015 7:00 AM 0.00 0.0 M M M
5/28/2015 7:00 AM 0.00 0.0 M M M
5/29/2015 7:00 AM 0.00 0.0 M M M
5/30/2015 7:00 AM 0.00 0.0 M M M
5/31/2015 7:00 AM 0.00 0.0 M M M
6/1/2015 11:57 AM 0.16 M M M M No rain earlier than 5:55 PM yesterday 5/31/15. 0.16" from last night's rain; emptied 11:53 AM today.
6/2/2015 8:13 AM 1.60 M M M M
6/3/2015 4:58 PM 0.06 M M M M Misty drizzle off and on yesterday 6/2/15. 0.03" at 1:28 PM. Mist in air, but no further accumulation at 10:26. Today, +0.06", no recent precipitation at 4:58 PM.
6/4/2015 11:44 AM 0.04 M M M M 0.04" at 11:44 AM
6/9/2015 10:07 AM 1.28 M M M M 0.01" from brief shower yesterday 6/8/15, recorded 6:38 PM. +1.27" from overnight rain, recorded at 10:07 AM today.
6/10/2015 7:00 AM 0.00 0.0 M M M
6/11/2015 7:00 AM 0.00 0.0 M M M
6/12/2015 7:00 AM 0.00 0.0 M M M
6/16/2015 11:26 AM 0.00 0.0 M M M Gauge dry at 11:26 AM.
6/17/2015 7:00 AM 0.00 0.0 M M M
6/18/2015 11:53 AM 0.54 M M M M 0.54" rain after 5:56 PM yesterday 6/17/15.
6/19/2015 3:32 PM 0.03 M M M M
6/30/2015 10:00 AM 0.02 M M M M 0.02" at 9:56 AM; sprinkling again at 10:00.
7/1/2015 9:57 AM 0.80 M M M M 0.80" in overnight rain.
7/2/2015 11:57 AM 0.16 M M M M 0.16" at 11:57 AM.
7/16/2015 7:00 AM 0.00 0.0 M M M
7/17/2015 7:00 AM 0.00 0.0 M M M
7/21/2015 7:00 AM 0.00 0.0 M M M
7/22/2015 8:35 AM 0.00 0.0 M M M No rain from last evening's scattered storms.
7/23/2015 12:04 PM 0.00 0.0 M M M
7/24/2015 7:00 AM 0.00 0.0 M M M
7/25/2015 7:00 AM 0.00 0.0 M M M
7/28/2015 8:37 AM 0.41 M M M M 0.41" from mid afternoon rain yesterday 7/27/15. No subsequent measurable precipitation.
7/29/2015 7:00 AM 0.00 0.0 M M M
7/30/2015 10:55 AM 0.25 M M M M Rain began at 1:05 PM yesterday 7/29/15. Rain heavy at 1:13; stopped by 2:07. 0.24" at 2:18. Additional 0.01" by 5:43. No measurable precipitation thereafter.
7/31/2015 6:45 PM 0.24 M M M M Rain began shortly before 2:-6 PM yesterday 7/30/15. Lightning 6 seconds distant at 2:25. Rain stopped with 0.24" by 3:25. No subsequent measurable precipitation.
8/1/2015 7:00 AM 0.00 0.0 M M M
8/2/2015 7:00 AM 0.00 0.0 M M M
8/3/2015 7:00 AM 0.00 0.0 M M M
8/4/2015 7:00 AM 0.00 0.0 M M M
8/5/2015 11:30 AM T M M M M Sprinkling by 6:18 PM yesterday 8/4/15. Very light rain at 6:21. Gauge dry at 11:30 AM today.
8/6/2015 7:00 AM 0.00 0.0 M M M
8/7/2015 10:02 AM 0.03 M M M M
8/11/2015 10:38 AM 0.45 M M M M
8/12/2015 10:01 AM 0.04 M M M M Rain and blustery wind begin ca. 3:00 PM yesterday 8/11/15. 0.04" at 4:16 (APE). No further rain.
8/13/2015 11:47 AM 0.00 0.0 M M M
8/14/2015 9:47 AM 0.00 0.0 M M 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 9:08 AM 0.18 M M M M
8/21/2015 11:54 AM 0.28 M M M M +0.04" at 12:32 PM yesterday 8/20/15. +0.24" at 11:54 AM from yesterday's afternoon and evening storms.
8/31/2015 10:26 AM 0.00 0.0 M M M
9/1/2015 12:28 PM 0.00 0.0 M M M
9/2/2015 11:26 AM 0.00 0.0 M M M
9/3/2015 11:06 AM 0.00 0.0 M M M
9/4/2015 11:16 AM 0.00 0.0 M M M
9/5/2015 7:00 AM 0.00 0.0 M M M
9/6/2015 7:00 AM 0.00 0.0 M M M
9/7/2015 7:00 AM 0.00 0.0 M M M
9/8/2015 7:00 AM 0.00 0.0 M M M
9/9/2015 7:00 AM 0.00 0.0 M M M
9/10/2015 12:05 PM 0.04 M M M M 0.04" from earlier rain at 12:02 PM.
9/11/2015 10:30 AM T M M M M Trace of rain on car by 4:39 PM yesterday. No measurable precipitation since.
9/15/2015 11:00 AM 0.00 0.0 M M M
9/16/2015 11:31 AM 0.00 0.0 M M M
9/17/2015 10:57 AM 0.00 0.0 M M M
9/18/2015 9:55 AM 0.00 0.0 M M M
9/22/2015 3:47 PM 0.17 M M M M
9/23/2015 7:00 AM 0.00 0.0 M M M
9/24/2015 6:18 PM 0.00 0.0 M M M 0.0



Start Date End Date & Time Duration in Days Precipitation Snow Depth Snow Depth SWE Notes
10/11/2014 10/12/2014 7:01 AM 2 0.48 M M Very light, very fine rain begins not long after 12:26 PM on 10/10/14. Trace of rain in gauge by 1:20 PM. Periods of light rain result in 0.01" at 5:22 PM; rain overnight and well into 10/11/14. +0.47" at 7:01 AM 10/12/14.
10/29/2014 10/31/2014 10:07 AM 3 0.02 M M 0.02" from rain on Wednesday 10/29/14.
11/7/2014 11/13/2014 10:27 AM 7 0.00 M M Gauge dry at 10:27 AM.
11/27/2014 11/28/2014 6:51 AM 2 0.15 M M 0.15" since 1:20 PM Wednesday 11/26 (to the end of the pre-Thanksgiving rain and snow storm).
12/5/2014 12/07/2014 7:42 AM 3 0.62 M M 0.62", puddles on flat roof frozen, at 7:42 AM 12/7/14.
12/8/2014 12/09/2014 5:20 PM 2 0.40 M M 0.40" at 5:20 PM 12/09/14; no measurable precipitation thereafter.
12/24/2014 1/04/2015 4:43 PM 12 1.25 M M
1/12/2015 1/13/2015 11:41 AM 2 0.82 M M 0.82" from yesterday's rain.
1/18/2015 1/19/2015 10:20 AM 2 0.79 M M Rain at least predominantly from 1/18/15 .
1/22/2015 1/24/2015 11:55 AM 3 1.18 M M Principal rain from yesterday afternoon/evening.
1/26/2015 1/27/2015 12:47 PM 2 0.28 M M Snow from 1/26/15-1/27/15 was largely melted from the landscape by the time I retrieved collected snow melt of 0.28" at 12:47 PM. No further precipitation occurred by the time I left at 4:27 PM on 1/27/15.
1/29/2015 1/30/2015 9:49 AM 2 0.05 M M Traces of sleet from afternoon-evening storm of 1/29/15. 0.05" melt at 9:49 AM 1/30/15.
2/12/2015 2/13/2015 3:06 PM 2 T M M A few flakes of snow around 8:30 and 10:00 AM, at least, on 2/12/15. None noticed today.
2/15/2015 2/18/2015 10:58 AM 4 0.42 3.0 3.00 I speculate that the measured snow depth (mostly from 2/16/15-2/17/15 storm) is low because of subsidence, but with little melt loss (the substrate was not wet beneath the cores). Based on my MD-PG-12 results, the initial snow depth was probably nearer to 4 inches.
2/21/2015 2/22/2015 3:36 PM 2 0.98 M M 0.98" melt from catch over 2/21 and 2/22. Cannot determine snow depth due to significant drifting and melting.
3/1/2015 3/02/2015 10:15 AM 2 0.67 M M Sleet and snow yesterday 3/1/15. 0.67" rain+melt at 10:15 AM today; crunchy crust on snow ca. 0.2". No new precipitation before I left at 4:50 PM
3/3/2015 3/04/2015 11:14 AM 2 0.14 M M Very light rain began between 12:07 and 1:28 PM yesterday. Intermittent sprinkles or very light rain. Trace of ice on metal surfaces by 3:30. Sprinkling, ~0.1" ice on automobiles by 6:26. 0.14" H2O total by 11:14 AM 3/4/15.
3/5/2015 3/06/2015 10:58 AM 2 1.15 3.5 M Goddard SFC closed 3/5/15, so no measurements during rain and snow storm. Installation reopened at 10:00 AM on 3/6/15. Snow had drifted; measured 3.5" at a "representative" location (1.15" melt from rain + snow catch). Reported snow depth and liquid are probably underestimates.
3/14/2015 3/15/2015 11:03 AM 2 0.74 M M 0.71" at 11:48 AM on 3/14/15 +0.03" at 4:50 PM. +0.0" at 11:03 AM 3/15/15, i.e., no additional precipitation thereafter.
3/20/2015 3/21/2015 11:47 AM 2 0.76 M M Snow, some sleet, a bit of rain before and following the period 1:30 to 3:50 PM 3/20/15.
4/4/2015 4/06/2015 9:53 AM 3 0.00 M M Gauge dry; if a small amount of rain in evening of 4/4/15 as happened nearby, it may have been evaporatively lost.
4/11/2015 4/13/2015 10:07 AM 3 0.00 M M Gauge dry at 10:07 AM 4/13/15.
4/14/2015 4/15/2015 4:35 PM 2 0.00 M M Gauge dry at 4:35 PM 4/15/15.
4/16/2015 4/17/2015 12:09 PM 2 0.16 M M None.
4/25/2015 4/27/2015 10:41 AM 3 0.20 M M
5/10/2015 5/13/2015 10:07 AM 4 0.00 M M No water in gauge for this period.
5/16/2015 5/17/2015 1:43 PM 2 0.24 M M Line of storms passed through yesterday evening 5/16/15. Only sprinkles remain, with breaking clouds to W, with broad band of sun "drawing water" of golden hue at 7:15 PM. Overcast at 11:05. 0.24", including possible rain from this morning, recorded at 1:43 PM today.
6/5/2015 6/08/2015 10:05 AM 4 0.46 M M
6/13/2015 6/15/2015 1:14 PM 3 1.47 M M
6/20/2015 6/29/2015 10:47 AM 10 4.40 M M Out of town.
7/3/2015 7/04/2015 3:52 PM 2 0.32 M M 0.32" in gauge at 3:52 PM. Walks/streets dry; sprinkles just beginning at 4:00. +T at 4:12.
7/5/2015 7/15/2015 2:11 PM 11 0.98 M M
7/18/2015 7/20/2015 8:46 AM 3 0.02 M M
7/25/2015 7/27/2015 9:09 AM 3 0.23 M M Almost certainly all from predawn storm on 7/27/15.
8/8/2015 8/10/2015 12:13 PM 3 0.12 M M 0.12" in early morning today 8/10/15.
8/15/2015 8/17/2015 10:19 AM 3 0.00 M M
8/22/2015 8/30/2015 1:07 PM 9 0.92 M M
9/12/2015 9/14/2015 12:01 PM 3 0.16 M M
9/19/2015 9/21/2015 9:55 AM 3 0.00 M M No evidence of precipitation.
9/25/2015 9/30/2015 6:54 PM 6 3.65 M M An identical report was submitted in error for Station MD-PG-12.



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
4/20/2015 6:03 PM First (large) raindrops at 6:03 PM. Hail began 6:04; with heavy rain and wind (waves or sheets of rain swept across the parking lot). Rain slackened, hail became infrequent at 6:06. Moderate rain, no hail at 6:07. Rain only light by 6:10; a lovely rainbow appeared, complete from ground to crown at 6:12; upper third gone by 6:13; rain stopped by 6:14. Very faint lower leg(s) of secondary bow were evident occasionally. Total rain 0.17”. 3/8" NA Rice Hard 3 1min no damage Continuous True After rain Before smaller hail 10-20