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 16 3.55 1.09 31 1.01 22 0.08 9 4 5 0 0.0 0 0
Nov 16 3.50 0.37 30 0.00 8 0.37 22 6 0 2 0.0 0 0
Dec 16 3.30 2.95 31 1.68 9 1.27 22 6 3 1 0.0 0 0
Jan 17 3.02 3.16 31 0.34 15 2.82 16 6 6 1 0.9 2 0
Feb 17 2.80 0.84 25 0.18 13 0.66 12 5 1 3 0.0 0 0
March 17 3.76 3.74 28 2.20 13 1.54 15 7 8 1 0.0 0 0
April 17 3.39 1.81 30 1.62 9 0.19 21 4 4 1 0.0 0 0
May 17 4.35 6.59 31 3.67 18 2.92 13 5 9 0 0.0 0 0
June 17 3.79 1.32 30 1.18 14 0.14 16 3 6 1 0.0 0 0
July 17 4.13 6.26 31 3.18 18 3.08 13 5 6 1 0.0 0 0
Aug 17 3.41 7.54 31 4.90 13 2.64 18 5 9 0 0.0 0 0
Sept 17 3.90 1.65 30 1.58 14 0.07 16 3 4 0 0.0 0 0
Water Year Totals: 42.90" 37.32" 359 days 21.54" 166 15.78" 193 days 59 61 days 11 days 0.9" 2 days 0 days



Days in Water Year Cell Color Key
        Daily Observation with Prcp         Missing Day
        Multiday Observation         Daily/Multiday Observation Conflict

Day of Year Daily Prcp Multiday Prcp
10/1/2016 0.19
10/2/2016 0.21
10/3/2016 0.00
10/4/2016 0.00
10/5/2016 0.00
10/6/2016 0.00
10/7/2016 0.00
10/8/2016 0.20
10/9/2016 0.12
10/10/2016 0.00
10/11/2016 0.00
10/12/2016 0.00
10/13/2016 0.00
10/14/2016 0.00
10/15/2016 0.00
10/16/2016 **
10/17/2016 0.00
10/18/2016 0.00
10/19/2016 0.00
10/20/2016 0.00
10/21/2016 0.00
10/22/2016 0.29
10/23/2016 **
10/24/2016 0.00
10/25/2016 0.00
10/26/2016 0.00
10/27/2016 **
10/28/2016 0.06
10/29/2016 **
10/30/2016 **
10/31/2016 0.02
11/1/2016 0.00
11/2/2016 0.00
11/3/2016 T
11/4/2016 0.00
11/5/2016 **
11/6/2016 **
11/7/2016 0.00
11/8/2016 **
11/9/2016 0.36
11/10/2016 T
11/11/2016 **
11/12/2016 **
11/13/2016 **
11/14/2016 0.00
11/15/2016 **
11/16/2016 0.00
11/17/2016 0.00
11/18/2016 0.00
11/19/2016 **
11/20/2016 **
11/21/2016 0.01
11/22/2016 0.00
11/23/2016 **
11/24/2016 **
11/25/2016 **
11/26/2016 **
11/27/2016 **
11/28/2016 0.00
11/29/2016 **
11/30/2016 **
12/1/2016 1.10
12/2/2016 0.00
12/3/2016 **
12/4/2016 0.00
12/5/2016 0.35
12/6/2016 T
12/7/2016 0.91
12/8/2016 0.00
12/9/2016 0.00
12/10/2016 **
12/11/2016 **
12/12/2016 0.17
12/13/2016 0.00
12/14/2016 0.00
12/15/2016 **
12/16/2016 0.00
12/17/2016 0.42
12/18/2016 **
12/19/2016 **
12/20/2016 0.00
12/21/2016 **
12/22/2016 **
12/23/2016 0.00
12/24/2016 **
12/25/2016 **
12/26/2016 **
12/27/2016 **
12/28/2016 **
12/29/2016 **
12/30/2016 **
12/31/2016 **
Day of YearDaily PrcpMultiday Prcp
1/1/2017 **
1/2/2017 **
1/3/2017 **
1/4/2017 1.63
1/5/2017 0.00
1/6/2017 T
1/7/2017 **
1/8/2017 **
1/9/2017 M
1/10/2017 0.00
1/11/2017 0.06
1/12/2017 0.05
1/13/2017 0.00
1/14/2017 0.14
1/15/2017 **
1/16/2017 0.13
1/17/2017 **
1/18/2017 0.28
1/19/2017 0.00
1/20/2017 0.01
1/21/2017 **
1/22/2017 **
1/23/2017 0.78
1/24/2017 0.04
1/25/2017 0.00
1/26/2017 0.00
1/27/2017 0.00
1/28/2017 **
1/29/2017 0.00
1/30/2017 0.04
1/31/2017 0.00
2/1/2017 0.00
2/2/2017 T
2/3/2017
2/4/2017 **
2/5/2017 **
2/6/2017 0.00
2/7/2017 T
2/8/2017 0.00
2/9/2017 0.18
2/10/2017 0.00
2/11/2017 **
2/12/2017 0.10
2/13/2017 0.00
2/14/2017 0.00
2/15/2017 0.00
2/16/2017 T
2/17/2017 0.00
2/18/2017 **
2/19/2017 **
2/20/2017 0.00
2/21/2017
2/22/2017 **
2/23/2017 0.00
2/24/2017
2/25/2017 **
2/26/2017 0.56
2/27/2017 0.00
2/28/2017 0.00
3/1/2017 0.40
3/2/2017 0.01
3/3/2017 0.01
3/4/2017 **
3/5/2017 **
3/6/2017 0.00
3/7/2017 T
3/8/2017 0.12
3/9/2017 0.00
3/10/2017
3/11/2017
3/12/2017 **
3/13/2017 0.00
3/14/2017 **
3/15/2017 1.48
3/16/2017 0.00
3/17/2017 0.00
3/18/2017 0.01
3/19/2017 0.49
3/20/2017 **
3/21/2017 0.01
3/22/2017 0.00
3/23/2017 **
3/24/2017 0.02
3/25/2017
3/26/2017 **
3/27/2017 0.03
3/28/2017 0.06
3/29/2017 **
3/30/2017 0.00
3/31/2017 1.10
Day of YearDaily PrcpMultiday Prcp
4/1/2017 **
4/2/2017 **
4/3/2017 0.08
4/4/2017 0.15
4/5/2017 0.00
4/6/2017 0.20
4/7/2017 1.21
4/8/2017 **
4/9/2017 **
4/10/2017 0.00
4/11/2017 0.00
4/12/2017 0.00
4/13/2017 T
4/14/2017 0.00
4/15/2017 **
4/16/2017 0.03
4/17/2017 **
4/18/2017 **
4/19/2017 0.08
4/20/2017 0.06
4/21/2017 **
4/22/2017 **
4/23/2017 **
4/24/2017 **
4/25/2017 **
4/26/2017 **
4/27/2017 **
4/28/2017 **
4/29/2017 **
4/30/2017 **
5/1/2017 **
5/2/2017 **
5/3/2017 **
5/4/2017 **
5/5/2017 2.65
5/6/2017 **
5/7/2017 0.06
5/8/2017 0.00
5/9/2017 0.00
5/10/2017 0.00
5/11/2017 0.21
5/12/2017 0.69
5/13/2017 0.98
5/14/2017 **
5/15/2017 0.00
5/16/2017 0.00
5/17/2017 0.00
5/18/2017 0.00
5/19/2017 0.00
5/20/2017 0.00
5/21/2017 **
5/22/2017 0.20
5/23/2017 0.00
5/24/2017 0.30
5/25/2017 0.62
5/26/2017 0.24
5/27/2017 0.01
5/28/2017 0.50
5/29/2017 **
5/30/2017 0.01
5/31/2017 0.12
6/1/2017 0.07
6/2/2017 0.00
6/3/2017 0.00
6/4/2017 0.00
6/5/2017 T
6/6/2017 0.04
6/7/2017 0.01
6/8/2017 0.00
6/9/2017 0.00
6/10/2017 **
6/11/2017 **
6/12/2017 **
6/13/2017 **
6/14/2017 **
6/15/2017 **
6/16/2017 **
6/17/2017 0.14
6/18/2017 **
6/19/2017 0.00
6/20/2017 0.72
6/21/2017 0.00
6/22/2017 0.00
6/23/2017 0.17
6/24/2017 0.17
6/25/2017 **
6/26/2017 0.00
6/27/2017 **
6/28/2017 **
6/29/2017 **
6/30/2017 **
Day of YearDaily PrcpMultiday Prcp
7/1/2017 **
7/2/2017 **
7/3/2017 0.48
7/4/2017 **
7/5/2017 0.00
7/6/2017 0.28
7/7/2017 0.10
7/8/2017 0.00
7/9/2017 **
7/10/2017 0.00
7/11/2017 0.00
7/12/2017 0.00
7/13/2017 0.00
7/14/2017 0.00
7/15/2017 0.15
7/16/2017 **
7/17/2017 **
7/18/2017 0.00
7/19/2017 0.06
7/20/2017 0.00
7/21/2017 0.00
7/22/2017 0.00
7/23/2017 0.72
7/24/2017 1.87
7/25/2017 T
7/26/2017 0.00
7/27/2017 0.00
7/28/2017 0.00
7/29/2017 **
7/30/2017 **
7/31/2017 2.60
8/1/2017 0.00
8/2/2017 0.36
8/3/2017 0.10
8/4/2017 1.89
8/5/2017 **
8/6/2017 **
8/7/2017 0.60
8/8/2017 1.22
8/9/2017 0.00
8/10/2017 0.00
8/11/2017 0.00
8/12/2017 **
8/13/2017 **
8/14/2017 0.60
8/15/2017 0.07
8/16/2017 **
8/17/2017 0.09 0.35
8/18/2017 **
8/19/2017 **
8/20/2017 **
8/21/2017 **
8/22/2017 **
8/23/2017 **
8/24/2017 1.09
8/25/2017 0.15
8/26/2017 **
8/27/2017 **
8/28/2017 0.00
8/29/2017 0.56
8/30/2017 0.46
8/31/2017
9/1/2017 0.00
9/2/2017 0.66
9/3/2017 0.20
9/4/2017 0.00
9/5/2017 0.00
9/6/2017 0.21
9/7/2017 0.51
9/8/2017 0.00
9/9/2017 **
9/10/2017 **
9/11/2017 0.00
9/12/2017 **
9/13/2017 **
9/14/2017 **
9/15/2017 **
9/16/2017 **
9/17/2017 **
9/18/2017 **
9/19/2017 **
9/20/2017 **
9/21/2017 0.07
9/22/2017 0.00
9/23/2017 0.00
9/24/2017 **
9/25/2017 0.00
9/26/2017 0.00
9/27/2017 0.00
9/28/2017 0.00
9/29/2017 0.00
9/30/2017 **



Observation Date Observation Time Precipitation Snowfall Snowfall SWE Snow Depth Snow SWE Notes
10/1/2016 11:42 AM 0.19 M M M M 0.19", sprinkles begin again, light fog/mist at 11:42 AM.
10/2/2016 11:48 AM 0.21 M M M M Sprinkles began at 1:11 PM yesterday 10/01/16; +0.09" at 3:08 (rain stopped sometime before this), +0.12" at 5:25. No measurable precipitation since that time.
10/3/2016 7:00 AM 0.00 0.0 M M M
10/4/2016 11:01 AM 0.00 0.0 M M M
10/5/2016 11:00 AM 0.00 0.0 M M M
10/6/2016 7:00 AM 0.00 0.0 M M M
10/7/2016 9:37 AM 0.00 0.0 M M M No precipitation, but overcast with light fog and a bit of mist.
10/8/2016 3:14 PM 0.20 M M M M Very light fine rain, visibility ca. 1 mile, calm, 0.02" at 11:52 AM. Additional 0.18". with continuing light rain, at 3:14 PM.
10/9/2016 12:20 PM 0.12 0.0 M M M 0.12" rain from glancing blow by Hurricane Matthew; remnants of hurricane clouds low to east, but mostly clear blue sky by now.
10/10/2016 7:00 AM 0.00 0.0 M M M
10/11/2016 7:00 AM 0.00 0.0 M M M
10/12/2016 8:51 AM 0.00 0.0 M M M No precipitation, but calm, with dense ground fog (estimate visibility as 150 yards); fog is highly variable between Highbridge Road and Goddard Space Flight Center.
10/13/2016 7:00 AM 0.00 0.0 M M M
10/14/2016 11:30 AM 0.00 0.0 M M M
10/15/2016 12:55 PM 0.00 0.0 M M M No precipitation.
10/18/2016 11:01 AM 0.00 0.0 M M M No precipitation; scattered wispy cirrus, banded below 20 degrees elevation NW, breath of wind at 11:01 AM;
10/19/2016 11:38 AM 0.00 0.0 M M M No precipitation; patchy altocumulus in somewhat pale sky, breath of wind from ~west.
10/20/2016 10:17 AM 0.00 0.0 M M M No precipitation; slightly pale sky, scattered thin cirrus, thin stratocumulus, calm.
10/21/2016 11:33 AM 0.00 0.0 M M M No precipitation; lovely blue sky with a few NE-SW-trending bands of cumulus; very light breeze.
10/22/2016 12:15 PM 0.29 M M M M Mid-afternoon frontal rain yesterday; 0.29" at 3:58 PM (APE). A small segment (2 deg) of primary rainbow at 4:05. Moderately strong gusty west wind currently.
10/25/2016 12:52 PM 0.00 0.0 M M M No precipitation; scattered small cumulus, light NW wind.
10/26/2016 1:09 PM 0.00 0.0 M M M No precipitation; considerable thin altocumulus.
11/1/2016 1:00 PM 0.00 0.0 M M M No precipitation; uniform stratus, calm at 1:00 PM.
11/2/2016 11:48 AM 0.00 0.0 M M M No precipitation; scattered wispy cirrus, slightly brownish haze near horizon, calm.
11/3/2016 9:58 AM T M M M M Trace of rain; slightly pale blue sky, mostly small cumulus and partial stratus, very light SW wind.
11/4/2016 3:15 PM 0.00 0.0 M M M No measurable precipitation. Lovely blue sky, with scattered small tatters of cloud; light gusty NW wind at 3:15 PM.
11/10/2016 9:34 AM T M M M M Scattered bands of cloud to NW, light gusty NW wind, trace of rain in gauge at 9:34 AM.
11/17/2016 8:29 AM 0.00 0.0 M M M No precipitation; clear sky, moderate dew, light NW wind.
11/18/2016 12:30 PM 0.00 0.0 M M M Very light NW wind; clear sky except for thin brown haze (pollution) to ca. 7 degrees elevation.
11/22/2016 11:48 AM 0.00 0.0 M M M No precipitation, but blustery NW wind continues.
12/2/2016 2:42 PM 0.00 0.0 M M M No precipitation; pale blue sky, scattered very small cumulus tatters, light W wind.
12/5/2016 11:15 AM 0.35 M M M M
12/6/2016 9:52 AM T M M M M Trace of rain, overcast, sprinkling at 9:52.
12/7/2016 11:15 AM 0.91 M M M M Rain begins before 9:45 AM yesterday 12/06/16; 0.06" at 11:57 AM +0.85" at 11:15 AM today.
12/8/2016 9:55 AM 0.00 0.0 M M M No precipitation; overcast, calm.
12/9/2016 12:12 PM 0.00 0.0 M M M No precipitation; lovely blue sky, scattered small cumulus/tatters, light gusty wind.
12/13/2016 1:55 PM 0.00 0.0 M M M No precipitation; overcast, very light S wind.
12/14/2016 3:08 PM 0.00 0.0 M M M No precipitation; light NW wind, overcast, faint right sundog only at 3:08 PM.
12/17/2016 3:35 PM 0.42 M M M M Rain ended, partial clearing.
1/5/2017 12:42 PM 0.00 0.0 M M M No precipitation; nearly uniform stratus overcast, diffuse-blob-sun, very light S-SW wind; recent faint diffuse portion of 22 degree halo.
1/6/2017 10:25 AM T 0.1 T 0.0 M Partial cloudiness, light NW wind. Most of snow gone, with patches on fallen leaves, flat roof - estimate total fall <= 0.1", estimate trace of water equivalent.
1/10/2017 1:11 PM 0.00 0.0 M M M
1/11/2017 9:52 AM 0.06 M M M M
1/12/2017 10:32 AM 0.05 M M M M 0.05", mostly overnight, with brief sprinkles 10:13-10:16 AM.
1/13/2017 2:02 PM 0.00 0.0 M M M Partly cloudy, light variable wind.
1/14/2017 5:18 PM 0.14 M M M M Light fine rain; estimate visibility as ca. 1/2 mile; light SE wind; very thin layer (ca 0.2 mm) of ice on vertical metal surface; 0.05" H2O at 12:47 PM +0.07" at 3:01 +0.02" at 5:18.
1/19/2017 9:55 AM 0.00 0.0 M M M No precipitation; breaking overcast, breath of wind.
1/20/2017 1:25 PM 0.01 M M M M Variably grey stratus overcast, light SE wind, sprinkles begin, 0.01" at 1:25 PM.
1/24/2017 1:59 PM 0.04 M M M M 0.04" overnight.
1/25/2017 10:53 AM 0.00 0.0 M M M No precipitation; at present clear, light NW wind, lovely.
1/26/2017 1:27 PM 0.00 0.0 M M M No precipitation. Currently scattered stratus encroaching to ca. 20 degrees S-W; else clear; moderate-strong gusty NW+/_ wind.
1/27/2017 9:44 AM 0.00 0.0 M M M No precipitation; currently partly cloudy, windy.
1/30/2017 11:58 AM 0.04 0.8 0.04 0.0 0.04 Only small patches of snow remain in somewhat sheltered areas. From 0.04" catch melt, -estimate- 0.8" snow (I use this as an estimate for New Snowfall, though it has now essentially melted away).
1/31/2017 9:17 AM 0.00 0.0 M M M No precipitation; considerable multilevel clouds: stratus, altocumulus, cirrus, contrails; light SSE wind.
2/1/2017 8:37 AM 0.00 0.0 M M M No precipitation; mostly cloudy, breath of wind.
2/2/2017 8:42 AM T M M M M A few sprinkles at 6:53 PM yesterday; currently a breath of wind, a few banded stratus, several contrails.
2/7/2017 9:37 AM T M M M M Trace of earlier rain; mostly cloudy, light variable gusty wind.
2/8/2017 10:30 AM 0.00 0.0 M M M No precipitation.
2/9/2017 11:05 AM 0.18 M M M M 0.18" H2O; no evidence of snow. Breaking grey stratus, moderate gusty NW wind.
2/10/2017 11:03 AM 0.00 0.0 M M M No precipitation; partly cloudy, variable light wind.
2/13/2017 10:04 AM 0.00 0.0 M M M No measured precipitation; banded stubs of stratocumulus below 3 degrees elevation SW-NW-NE, moderate-strong gusty NW wind at 10:04 AM.
2/14/2017 9:53 AM 0.00 0.0 M M M No precipitation; overcast, calm.
2/15/2017 9:57 AM 0.00 0.0 M M M No precipitation; overcast, very light NW wind.
2/16/2017 9:53 AM T 0.0 0.00 0.0 M A few flying flakes of snow from a 70% cloudless sky 9:50-9:53 AM this morning.
2/17/2017 3:43 PM 0.00 0.0 M M M No precipitation; scattered contrail remnants in pale blue sky, calm.
2/27/2017 4:15 PM 0.00 0.0 M M M No precipitation, overcast, breath of wind from SSW.
2/28/2017 2:19 PM 0.00 0.0 M M M No precipitation; gradually thickening stratus, calm.
3/1/2017 12:27 PM 0.40 M M M M Mixed tri-level clouds, light-moderate gusty SW wind.
3/2/2017 11:14 AM 0.01 M M M M 0.01" from rain ca 1:45-1:55 PM yesterday +trace in sprinkles at 5:10 PM. Currently nice blue sky, scattered small-medium stratocumulus, moderate-strong gusty W wind at 11:14.
3/3/2017 4:07 PM 0.01 M M M M Overnight snow gone except where still in shade; 0.01" melt in gauge. Partly cloudy, moderately strong gusty WNW wind. Brief snow flurry at 12:12 PM; A few flying flakes of snow at 1:26.
3/7/2017 10:30 AM T M M M M A few sprinkles around 7 AM; overcast breaking up at 10:30, with light wind.
3/8/2017 11:14 AM 0.12 M M M M Sprinkles began shortly before 5:23 PM yesterday; continuing at 5:29. 0.12" at 11:14 AM today, under clear skies, light gusty W wind.
3/9/2017 11:17 AM 0.00 0.0 M M M No precipitation; a few very thin bands of diffuse clouds low to SE, a few brief contrails, light WSW wind.
3/16/2017 2:36 PM 0.00 0.0 M M M No precipitation; scattered small cumulus, moderate gusty WSW wind, roads with wet flows of water due to considerable melting snow.
3/17/2017 11:16 AM 0.00 0.0 M M M No precipitation. Thaw that began yesterday continues, providing more runoff; open areas devoid of snow (crust), but some icy cover remains in shaded locations; lovely blue sky with several very thin E-W bands of high clouds, but no optical effects; calm and quite pleasant.
3/18/2017 12:05 PM 0.01 M M M M
3/19/2017 2:07 PM 0.49 M M M M I was told by two employees who came to work this morning, that there was new snow on the ground when they arrived. It is gone now. Total rain+melt is 0.49".
3/22/2017 2:23 PM 0.00 0.0 M M M No precipitation; cloudless sky, light gusty wind.
3/28/2017 11:38 AM 0.06 M M M M Co-workers report that there was thunder around 8:45 or 9:00 AM. 0.06" in gauge at 11:38.
3/31/2017 5:04 PM 1.10 M M M M A rainy day. 1.10" in gauge, with low-lying fog: at ground level I estimated visibility at ca 500 yards, but from rooftop (ca. 40' altitude), at ca. 200 yards at 3:23 PM. Thereafter a trace of rain in occasional sprinkles up to 5:04.
4/4/2017 10:06 AM 0.15 M M M M 0.15", partial clearing from SW, light gusty SW wind at 10:06.
4/5/2017 9:57 AM 0.00 0.0 M M M No precipitation; scattered clouds, breath of wind.
4/6/2017 5:41 PM 0.20 M M M M Co-workers say that rain and thunder began "around 8:30". Very light rain, calm at 9:53. Low-lying cloud (est. ground level visibility 500 yd; from rooftop at ca. 40', 300 yd); sprinkling, occasional very light wind gust, 0.20" at 10:03.
4/7/2017 1:31 PM 1.21 M M M M Light rain late morning yesterday until some time before 1:40 PM. +1.04” at 1:44. Light rain, wind up by 1:57. Sprinkling with moderately strong wind at 2:11; wind dropped somewhat by 2:57. Much lovely blue sky by 3:31. Drying off a bit, +0.06” at 3:37. Light rain again at 4:33, 4:51. Sunshine, beginning to dry once more, +0.05” at 5:41. A few spits, +0.06” by 1:16 PM today.
4/11/2017 3:55 PM 0.00 0.0 M M M No precipitation; warm, S-N-trending bands of thin diffuse clouds to W, very light SE-S wind.
4/12/2017 9:38 AM 0.00 0.0 M M M No precipitation; broken overcast, calm.
4/13/2017 12:46 PM T M M M M A few drops yesterday around 11:35 AM with passage of line of rain storms; portions of 22 degree halo observed 1:30-4:06 PM.
4/14/2017 3:06 PM 0.00 0.0 M M M No precipitation; somewhat pale blue sky, partly cloudy, very light wind.
4/20/2017 11:25 AM 0.06 M M M M 0.06" in early morning rain; mostly clear, calm.
5/8/2017 2:21 PM 0.00 0.0 M M M No precipitation; lovely blue sky with scattered small summer cumulus, light wind.
5/9/2017 11:59 AM 0.00 0.0 M M M No precipitation; lovely clear day, light W wind,
5/10/2017 10:40 AM 0.00 0.0 M M M No precipitation; high thin clouds (no optical phenomena), breath of wind.
5/11/2017 10:01 AM 0.21 M M M M Light rain, horizon nearly obscured, light E wind, 0.21".
5/12/2017 10:30 AM 0.69 M M M M +0.05" at 11:50 AM yesterday +0.54" at 4:40 PM +0.10" at 10:30 AM today. Currently overcast, light ESE wind.
5/13/2017 12:13 AM 0.98 M M M M Sprinkles began ca. 2:40 PM yesterday. Today, 0.98", overcast, light WNW wind at 12:13 PM.
5/16/2017 8:57 AM 0.00 0.0 M M M No precipitation; scattered very thin clouds, breath of wind.
5/17/2017 11:26 AM 0.00 0.0 M M M No precipitation; lovely blue sky, a few cloud low SE and NW, calm.
5/18/2017 9:29 AM 0.00 0.0 M M M No precipitation; partly cloudy (stratus and 'mare's tails' cirrus, calm.
5/19/2017 9:52 AM 0.00 0.0 M M M No precipitation; pale blue sky, calm.
5/20/2017 11:43 AM 0.00 0.0 M M M Two broad heavy downpours to N, passing W to E at 6:23 PM yesterday. At 11:43 AM today, 0.08", dry, with textured bilevel overcast and light wind from SE, slightly hazy horizon.
5/23/2017 8:48 AM 0.00 0.0 M M M No precipitation, overcast, very light ENE wind.
5/24/2017 10:00 AM 0.30 M M M M Not raining yet at 5:50 PM yesterday; light rain, puddles at 6:40; 0.07" at 10:01 +0.23" at 10:00 AM today; overcast, very light ENE wind.
5/25/2017 11:34 AM 0.62 M M M M Overcast, light W wind, 0.62".
5/26/2017 9:13 AM 0.24 M M M M First sprinkles, thunder ca. 5:45 PM yesterday; light rain and occasional thunder until after 7; rain stopped, partial clearing low to W, 0.24" at 8:25; no subsequent measurable rain.
5/27/2017 4:55 PM 0.01 M M M M Vulture sitting on top of stop sign; sprinkles begin at 10:32, mostly overcast, calm. Rain ended by 11:02; rain again by 12:02 PM, 0.01" at 2:13; no further precipitation by 4:55.
5/28/2017 6:30 PM 0.50 M M M M overcast, wet, calm 0.50" at 6:30 PM.
5/31/2017 11:17 AM 0.12 M M M M 0.01" in a bit of mist at 1:36 PM yesterday; +0.11", scattered small summer cumulus, slightly hazy, calm at,11:17 today.
6/1/2017 9:40 AM 0.07 M M M M Sprinkling at 5:53 PM yesterday; 0.07" at 6:42. No subsequent precipitation. Currently, sky a slightly pale blue, mostly clear, very light wind.
6/2/2017 11:00 AM 0.00 0.0 M M M No precipitation, somewhat pale sky with scattered small clouds, light NW wind.
6/3/2017 11:53 AM 0.00 0.0 M M M No precipitation, pale blue sky, considerable banded thin stratus, very light NW wind.
6/4/2017 12:14 PM 0.00 0.0 M M M No precipitation; somewhat pale blue sky, very thin bands of stratus, cirrus wisps, an aging contrail, slightly hazy horizon, warm, dry.
6/5/2017 10:10 AM T M M M M Overcast, calm, brief sprinkles at 10:10 AM,
6/6/2017 7:00 AM 0.04 M M M M Wet, small puddles by 1:30 PM yesterday; light rain, 0.03" at 1:58; +0.01", drying by 4:40. No subsequent rain. Currently, slightly pale partly cloudy sky, light NW wind.
6/7/2017 8:53 AM 0.01 M M M M Trace in brief fine sprinkles at 8:44 AM +0.01" from earlier precipitation recorded at 8:53; overcast, light E wind.
6/8/2017 11:37 AM 0.00 0.0 M M M No precipitation; mixed clouds cover half the sky, light NE wind.
6/9/2017 12:06 PM 0.00 0.0 M M M No precipitation; lovely blue sky, scattered small=medium summer cumulus, very light NW wind.
6/20/2017 11:35 AM 0.72 M M M M Broad dark clouds approaching from the W cover the sky to zenith at 3:32 PM. Rain begins shortly thereafter. Moderately heavy rain, moderate wind, very wet at 3:53. First hear thunder from my interior office at 4:02. Frequent lightning, thunder; lightning 1 second high at 4:08, with continuing moderate/heavy rain. Heavy rain, long roll of thunder at 4:12. Rain drops suddenly to light at 4:13. Light rain at 4:40. Sprinkling, calm at 4:49 PM. 0.72" in gauge at 11:20 AM today.
6/21/2017 3:24 PM 0.00 0.0 M M M No precipitation; a mix of stratus and summer cumulus, with a few castellans clouds to NE that are sheared toward the SE; blue haze in distance to horizon, light W wind.
6/22/2017 11:51 AM 0.00 0.0 M M M No precipitation; bi-level stratus, calm, very blue haze to horizon.
6/23/2017 10:05 AM 0.17 M M M M Portions of 22 degree halo 2:43 - 4:27 PM yesterday. 0.17" rain, roads mostly dry, overcast and light wind from SW, at 10:05 AM today.
6/24/2017 12:17 PM 0.17 M M M M Sprinkles began at 4:06 PM yesterday; light rain continued at 4:19. 0.17", scattered summer cumulus, blue haze to N horizon, light gusty wind at 12:17 today.
7/6/2017 10:05 AM 0.28 M M M M 0.28", very light rain, light NE wind, grey horizon due to rain at 10:05 AM.
7/7/2017 11:43 AM 0.10 M M M M Sprinkles began at 12:24 PM yesterday; +0.08" and drying at 12:56; light rain, surfaces running wet at 1:25; +0.02" mostly cloudy with large cumulus, light N wind at 11:43 AM today.
7/8/2017 1:15 PM 0.00 0.0 M M M No precipitation, ca. 50% cumulus beneath ca. 20% altocumulus and cirrus, light NW wind.
7/11/2017 1:00 PM 0.00 0.0 M M M No precipitation, mostly cloudy, very hazy in distance, light SW wind.
7/12/2017 1:26 PM 0.00 0.0 M M M No precipitation; somewhat pale sky, significant blue haze toward horizon, breath of NW-W wind, patchy thin stratus/altostratus.
7/13/2017 10:05 AM 0.00 0.0 M M M No precipitation; slightly pale blue sky, with patchy thin stratus NW of zenith and patchy thin altocumulus near zenith; blue ground haze to horizon, light W wind.
7/14/2017 10:03 AM 0.00 0.0 M M M No precipitation; somewhat pale blue sky, increasingly blue surface haze to horizon, scattered thin clouds, calm.
7/15/2017 11:50 AM 0.15 M M M M First hear thunder at 1:56 PM yesterday. Trace in brief rain 2:06-2:10. 0.07", walks drying at 5:44. Light rain begins at 5:58; lightning 10 seconds high. +0.08" at 11:58 this morning.
7/19/2017 1:00 PM 0.06 M M M M Brief light rain ca. 4:55-5:05 PM yesterday. After partial drying, raining again at 5:58. 0.06" at 5:48. No further measurable precipitation. Currently slightly pale blue sky with scattered small cumulus NW to considerable small/medium cumulus in SE. Increasingly dense blue haze toward horizon, sun drawing water SE, breath of wind.
7/20/2017 12:46 PM 0.00 0.0 M M M No precipitation; pale blue sky, scattered small/medium rising cumulus partially obscured by blue haze, ground-level blue haze nearly obscures the horizon; light NW wind, hot.
7/21/2017 9:48 AM 0.00 0.0 M M M No precipitation; somewhat pale sky, scattered small thin stratus, very light NW wind, slight distant haze.
7/22/2017 1:32 PM 0.00 0.0 M M M No precipitation; slightly pale blue sky, scattered small thin stratus beneath very thin altostratus(?), calm, considerable blue haze in the distance.
7/23/2017 10:37 AM 0.72 M M M M Rain began around 2:30 PM yesterday, 0.30" at 4:34. +0.42" at 10:37 today. Currently slightly pale blue sky, mostly covered by very thin low, high stratus, blue haze increases as look toward horizon, calm.
7/24/2017 10:57 AM 1.87 M M M M 1.87", scattered small-medium cumulus; thin altostratus below 15 degrees elevation SE, light NNW wind, at 10:57.
7/25/2017 11:10 AM T M M M M Trace of rain since 5 PM yesterday; Currently nice blue sky, many small-medium 'greybellied' cumulus, some thin cirrus to SE, slight blue haze toward horizon, light NW wind.
7/26/2017 7:50 AM 0.00 0.0 M M M No precipitation; slightly pale blue sky, thin bands of clouds <15 degrees elevation NW-NE-S, slightly blue haze as look toward horizon, calm, very heavy dew at 7:50.
7/27/2017 11:42 AM 0.00 0.0 M M M No precipitation; mostly cloudy with thin clouds, calm, hazy looking toward horizon.
7/28/2017 4:30 AM 0.00 0.0 M M M No precipitation; somewhat murky sky, dew on cars.
8/1/2017 12:33 PM 0.00 0.0 M M M No precipitation; blue sky, scattered rising cumulus, calm.
8/2/2017 10:07 AM 0.36 M M M M 0.36", somewhat pale sky; mixed thin altocumulus, stratus; blue haze toward horizon, calm.
8/3/2017 2:59 PM 0.10 M M M M 0.10" rain; currently rather pale blue sky, considerable small-medium-large cumulus, sun drawing water, increasingly blue haze with distance toward horizon, calm.
8/4/2017 9:52 AM 1.89 M M M M
8/8/2017 9:41 AM 1.22 M M M M It rained much of yesterday afternoon. 1:15" at 4:45 PM; additional 0.07" at 9:17 AM today. Overcast thinning now, faint blue haze toward the horizon, light N wind.
8/9/2017 9:52 AM 0.00 0.0 M M M no precipitation; clear, calm.
8/10/2017 12:43 PM 0.00 0.0 M M M No precipitation; slightly pale blue sky, scattered summer cumulus, patches of thin cirrus, blue haze toward horizon, light SE wind.
8/11/2017 9:55 AM 0.00 0.0 M M M No precipitation; textured overcast, very light wind.
8/15/2017 10:09 AM 0.07 M M M M Overcast, light rain, estimated visibility 3/4 mile, calm, 0.07" rain at 10:09 AM
8/17/2017 6:50 PM 0.09 M M M M Rain began after 12:48 PM. 0.05" at 3:42. Additional rain stopped by 4:03, started again at 4:25, stopped before 6:50 with further 0.04".
8/25/2017 10:03 AM 0.15 M M M M 0.15" from overnight rain. Currently slightly pale blue sky with scattered altocumulus, modest blue haze toward horizon, very light NW wind.
8/29/2017 1:59 PM 0.56 M M M M 0.56"; overcast, very light rain (which makes the horizon barely visible), very light NE wind at 1:56 PM.
8/30/2017 9:47 AM 0.46 M M M M +0.35" at 6:13 PM yesterday +0.11" at 8:20 +subsequent trace. Currently scattered small-medium cumulus, wisps of cirrus, very thin blue haze.
9/1/2017 9:57 AM 0.00 0.0 M M M No precipitation; broken overcast, calm.
9/2/2017 10:38 AM 0.66 M M M M 0.66", overcast, light wind from ENE at 10:38.
9/3/2017 9:50 AM 0.20 M M M M +0.14" at 1:13 PM yesterday +0.06" at 5:16 +Trace by 8:25; no further precipitation.
9/4/2017 9:35 AM 0.00 0.0 M M M No precipitation.
9/5/2017 9:14 AM 0.00 0.0 M M M No precipitation, slightly pale blue sky, scattered small-medium cumulus, light SSW wind.
9/6/2017 8:58 AM 0.21 M M M M Trace of rain by 6:51 PM yesterday +0.21" at 8:58 AM today; currently overcast, light wind.
9/7/2017 10:02 AM 0.51 M M M M +0.09" at 12:48 PM yesterday +0.26" at 4:22 +0.16" at 10:02 AM today (APE). Currently slightly pale clear blue sky, slightly hazy toward horizon, very light NW wind.
9/8/2017 12:22 PM 0.00 0.0 M M M No precipitation; lovely blue sky, a few small cumulus, very light wind.
9/22/2017 9:46 AM 0.00 0.0 M M M No precipitation; mostly cloudy, hazy toward horizon, sun drawing water, NW breath of wind.
9/23/2017 11:08 AM 0.00 0.0 M M M No precipitation; lovely blue sky, scattered mares' tail cirrus, thin altostratus(?), calm.
9/26/2017 12:08 PM 0.00 0.0 M M M No precipitation; gradually clearing overcast, calm at 12:08 PM.
9/27/2017 1:00 AM 0.00 0.0 M M M No precipitation; considerable small/medium/large grey-bottomed cumulus, light wind.
9/28/2017 11:25 AM 0.00 0.0 M M M No precipitation; clear, light wind at 11:25.
9/29/2017 1:08 PM 0.00 0.0 M M M No precipitation; partly cloudy lovely blue sky, very light variable wind.



Start Date End Date & Time Duration in Days Precipitation Snow Depth Snow Depth SWE Notes
10/16/2016 10/17/2016 1:30 PM 2 0.00 M M Lovely blue sky with a scattering of small thin clouds; very light west wind at 1:30 PM
10/23/2016 10/24/2016 2:24 PM 2 0.00 M M
10/27/2016 10/28/2016 12:40 PM 2 0.06 M M Rain from after noon yesterday. Thin banded cirrus, light-moderate gusty NW wind at the moment today.
10/29/2016 10/31/2016 1:30 PM 3 0.02 M M 0.02" - probably all from evening of 10/30/16.
11/5/2016 11/07/2016 3:12 PM 3 0.00 M M No precipitation; very clear sky, breath of air at 3:12. Same sky, wind, but with a half dozen short-lived contrails (12-18 seconds) in the NE-SW corridor, <25 degrees elevation to SW, at 4:31.
11/8/2016 11/09/2016 2:35 PM 2 0.36 M M Probably a combination of today's early morning rain, plus additional moderately heavy shower that began ca. 2:25 PM and ended shortly before 2:35.
11/11/2016 11/14/2016 10:14 AM 4 0.00 M M Gauge dry. Calm at observation time; distinct smog layer to ca. 3 degrees elevation, particularly noticeable along NW horizon.
11/15/2016 11/16/2016 8:52 AM 2 0.00 M M
11/19/2016 11/21/2016 1:50 PM 3 0.01 M M 0.01", but there may have been measurable loss due to persistent winds since frontal passage during late afternoon 11/19/16.
11/23/2016 11/28/2016 11:41 AM 6 0.00 M M No recorded precipitation during this period.
11/29/2016 12/01/2016 12:30 PM 3 1.10 M M Accumulation from each day's rain.
12/3/2016 12/04/2016 1:00 PM 2 0.00 M M No precipitation in gauge.
12/10/2016 12/12/2016 8:11 AM 3 0.17 M M Overcast, wet, light SW wind, 0.17" at 8:11 AM.
12/15/2016 12/16/2016 3:37 PM 2 0.00 M M No precipitation; at the moment, overcast, light ~SE wind.
12/18/2016 12/20/2016 1:00 PM 3 0.00 M M No measurable precipitation. A slight brown haze to ca. 3 degrees elevation, concentrated in SSW-WNW, fading away elsewhere; variably oriented breath of wind.
12/21/2016 12/23/2016 12:47 PM 3 0.00 M M No evidence of precipitation.
12/24/2016 1/04/2017 12:15 PM 12 1.63 M M Out of town 12/24-01/03 (some evaporation possible); a bit of rain this morning, but sidewalks and concrete surfaces mostly dry now. Light variably W-NW wind. Thin small-cobble altocumulus from 15 degrees elevation NW, across zenith, to SE horizon, with evident SE-NW striations; band of medium "summer cumulus" in NW below 5 degrees elevation. The entire structure is moving slowly from SW to NE (cool front advancing from NW?).
1/7/2017 1/09/2017 10:19 AM 3 M T M Snowfall from Saturday 1/7/17 nearly gone -- Scattered small patches ca. 0.4" deep remain. ESTIMATE maximum 1.5" snow, 0.6" H2O based on nearby station MD-PG 12 data.
1/15/2017 1/16/2017 10:40 AM 2 0.13 M M
1/17/2017 1/18/2017 8:08 AM 2 0.28 M M Scattered ground fog dissipating.
1/21/2017 1/23/2017 2:52 PM 3 0.78 M M Gusty wind, moderate rain at 2:25 PM today (1:23:17). Wind continues, but now only a very fine spray, 0.78" at 2:52 PM.
1/28/2017 1/29/2017 4:29 PM 2 0.00 M M No precipitation.
2/4/2017 2/06/2017 9:22 AM 3 0.00 M M
2/11/2017 2/12/2017 3:27 PM 2 0.10 M M Raining lightly at 3:13 PM; stopped by 3:27.
2/18/2017 2/20/2017 12:20 PM 3 0.00 M M
2/22/2017 2/23/2017 3:50 PM 2 0.00 M M No precipitation.
2/25/2017 2/26/2017 7:58 AM 2 0.56 M M
3/4/2017 3/06/2017 3:40 PM 3 0.00 M M
3/12/2017 3/13/2017 11:27 AM 2 0.00 M M Current sky dominated by cirrus: thin NE-SW bands SE to <30 degrees elevation; else scattered large irregular chaotic wisps; light wind at 11:27 AM
3/14/2017 3/15/2017 11:22 AM 2 1.48 1.3 0.79 Highly encrusted snow; total catch from storm 1.48" H2O; core depth 1.3", water content 0.79".
3/20/2017 3/21/2017 2:28 PM 2 0.01 M M
3/23/2017 3/24/2017 11:35 AM 2 0.02 M M Rain just stopped; light gusty SW wind.
3/26/2017 3/27/2017 11:33 AM 2 0.03 M M Overcast, horizon slightly obscured by haze. Very light SSE wind, walks and concrete surfaces drying, 0,03" at 11:33 AM.
3/29/2017 3/30/2017 10:28 AM 2 0.00 M M
4/1/2017 4/03/2017 4:49 PM 3 0.08 M M
4/8/2017 4/10/2017 8:30 PM 3 0.00 M M
4/15/2017 4/16/2017 7:28 AM 2 0.03 M M
4/17/2017 4/19/2017 2:22 PM 3 0.08 M M Interesting patches of yellow pollen on flat roof where puddles had been, and subsequently evaporated.
4/21/2017 5/05/2017 1:47 PM 15 2.65 M M
5/6/2017 5/07/2017 2:50 PM 2 0.06 M M
5/14/2017 5/15/2017 1:09 PM 2 0.00 M M No measured precipitation.
5/21/2017 5/22/2017 1:02 PM 2 0.20 M M Probably no rain yesterday day or evening. Currently overcast, calm, roads and walks mostly dry, 0.20" catch, no flooding.
5/29/2017 5/30/2017 8:35 AM 2 0.01 M M Low overcast, light ESE wind, 0.01" at 8:35 AM today.
6/10/2017 6/17/2017 5:07 PM 8 0.14 M M
6/18/2017 6/19/2017 11:05 AM 2 0.00 M M
6/25/2017 6/26/2017 1:14 PM 2 0.00 M M
6/27/2017 7/03/2017 11:54 PM 7 0.48 M M
7/4/2017 7/05/2017 12:02 PM 2 0.00 M M
7/9/2017 7/10/2017 9:51 AM 2 0.00 M M No precipitation; slightly pale blue sky, scattered small clouds, calm at 9:51 AM.
7/16/2017 7/18/2017 12:08 PM 3 0.00 M M No precipitation.
7/29/2017 7/31/2017 11:11 AM 3 2.60 M M 2.60" since 4:30 AM Friday 7/28/17.
8/5/2017 8/07/2017 11:01 AM 3 0.60 M M At 11:01 AM 0.60", very light rain, visibility ca. 1 mile, numerous optically thin columns of rising ground fog, very light NE wind.
8/12/2017 8/14/2017 1:48 PM 3 0.60 M M First noticed sprinkles at 2:25 PM Friday 8/11/17; 0.14" at 3:10. Additional trace of rain by 4:53; more brief sprinkles began at 5:05, ended by 5:08. Today, 8/14/17, overcast, considerable horizontal blue haze toward horizon, very light SE wind, dry, +0.46" at 1:38 PM. A few big drops began at 1:42 with a few small drops at 1:48 for an additional trace of precipitation.
8/16/2017 8/17/2017 6:50 PM 2 0.35 M M A portion of rain occurred on 8/15/17: 0.23" at 1:10 PM +0.03" at 2:49. Additional rain occurred today 8/17/17 after 12:48 PM: +0.05" at 3:42 +0.04" at 6:50.
8/18/2017 8/24/2017 10:25 AM 7 1.09 M M
8/26/2017 8/28/2017 12:37 AM 3 0.00 M M
9/9/2017 9/11/2017 3:28 PM 3 0.00 M M Gauge dry; faint, somewhat diffuse portions of 22 degree halo at 11:46 AM, 12:07 PM, 12:30. Halo complete at 2:30. Clouds thicken somewhat, halo brightens by 3:15. Complete, with faint colored left sundog at 3:28.
9/12/2017 9/21/2017 3:08 AM 10 0.07 M M
9/24/2017 9/25/2017 3:30 PM 2 0.00 M M
9/30/2017 10/02/2017 4:01 PM 3 0.00 M M Lovely clear sky, breath of wind.



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