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 11 3.55 1.47 5 1.47 5 0.00 0 0 5 0 0.0 0 0
Nov 11 3.50 2.47 16 1.08 5 1.39 11 4 5 0 0.0 0 0
Dec 11 3.30 3.76 7 3.76 7 0.00 0 0 7 0 0.0 0 0
Jan 12 3.02 1.14 7 0.88 5 0.26 2 1 4 0 0.0 0 0
Feb 12 2.80 1.74 4 1.74 4 0.00 0 0 3 0 0.0 0 0
March 12 3.76 1.61 4 1.61 4 0.00 0 0 4 0 0.0 0 0
April 12 3.39 1.74 10 1.48 3 0.26 7 2 3 0 0.0 0 0
May 12 4.35 1.90 30 0.54 4 1.36 26 4 3 0 0.0 0 0
June 12 3.79 1.67 22 1.07 2 0.60 20 1 2 0 0.0 0 0
July 12 4.13 4.18 32 0.17 1 4.01 31 3 1 0 0.0 0 0
Aug 12 3.41 2.32 28 0.30 13 2.02 15 6 3 0 0.0 0 0
Sept 12 3.90 2.07 24 0.88 9 1.19 15 2 3 0 0.0 0 0
Water Year Totals: 42.90" 26.07" 189 days 14.98" 62 11.09" 127 days 23 43 days 0 days 0.0" 0 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
10/1/2011
10/2/2011 0.52
10/3/2011
10/4/2011
10/5/2011
10/6/2011
10/7/2011
10/8/2011
10/9/2011
10/10/2011
10/11/2011
10/12/2011 0.26
10/13/2011 0.26
10/14/2011
10/15/2011
10/16/2011
10/17/2011
10/18/2011
10/19/2011 0.29
10/20/2011 0.14
10/21/2011
10/22/2011
10/23/2011
10/24/2011
10/25/2011
10/26/2011
10/27/2011
10/28/2011
10/29/2011
10/30/2011
10/31/2011
11/1/2011 0.01
11/2/2011
11/3/2011
11/4/2011
11/5/2011
11/6/2011
11/7/2011
11/8/2011
11/9/2011
11/10/2011 0.03
11/11/2011 **
11/12/2011 **
11/13/2011 **
11/14/2011 0.05
11/15/2011
11/16/2011 0.40
11/17/2011 **
11/18/2011 0.09
11/19/2011 **
11/20/2011 **
11/21/2011 0.15 0.15
11/22/2011 **
11/23/2011 1.10
11/24/2011
11/25/2011
11/26/2011
11/27/2011
11/28/2011
11/29/2011 0.49
11/30/2011
12/1/2011
12/2/2011
12/3/2011
12/4/2011
12/5/2011
12/6/2011 0.14
12/7/2011 1.96
12/8/2011 0.76
12/9/2011
12/10/2011
12/11/2011
12/12/2011
12/13/2011
12/14/2011
12/15/2011 0.01
12/16/2011
12/17/2011
12/18/2011
12/19/2011
12/20/2011
12/21/2011 0.05
12/22/2011 0.03
12/23/2011 0.81
12/24/2011
12/25/2011
12/26/2011
12/27/2011
12/28/2011
12/29/2011
12/30/2011
12/31/2011
Day of YearDaily PrcpMultiday Prcp
1/1/2012
1/2/2012
1/3/2012
1/4/2012
1/5/2012
1/6/2012
1/7/2012
1/8/2012
1/9/2012
1/10/2012
1/11/2012 0.14
1/12/2012
1/13/2012
1/14/2012
1/15/2012
1/16/2012
1/17/2012 0.20
1/18/2012
1/19/2012
1/20/2012 0.00
1/21/2012 **
1/22/2012 0.26
1/23/2012 0.04
1/24/2012
1/25/2012
1/26/2012
1/27/2012 0.50
1/28/2012
1/29/2012
1/30/2012
1/31/2012
2/1/2012
2/2/2012
2/3/2012
2/4/2012
2/5/2012
2/6/2012
2/7/2012
2/8/2012
2/9/2012
2/10/2012
2/11/2012
2/12/2012
2/13/2012
2/14/2012
2/15/2012
2/16/2012 0.13
2/17/2012
2/18/2012
2/19/2012
2/20/2012
2/21/2012
2/22/2012
2/23/2012 0.00
2/24/2012
2/25/2012 0.46
2/26/2012
2/27/2012
2/28/2012
2/29/2012 1.15
3/1/2012 0.48
3/2/2012
3/3/2012 0.76
3/4/2012
3/5/2012
3/6/2012
3/7/2012
3/8/2012
3/9/2012 0.03
3/10/2012
3/11/2012
3/12/2012
3/13/2012
3/14/2012
3/15/2012
3/16/2012
3/17/2012
3/18/2012
3/19/2012
3/20/2012 0.34
3/21/2012
3/22/2012
3/23/2012
3/24/2012
3/25/2012
3/26/2012
3/27/2012
3/28/2012
3/29/2012
3/30/2012
3/31/2012
Day of YearDaily PrcpMultiday Prcp
4/1/2012
4/2/2012 0.11
4/3/2012
4/4/2012
4/5/2012
4/6/2012
4/7/2012
4/8/2012
4/9/2012
4/10/2012
4/11/2012
4/12/2012
4/13/2012
4/14/2012
4/15/2012
4/16/2012
4/17/2012
4/18/2012
4/19/2012 0.10
4/20/2012
4/21/2012
4/22/2012
4/23/2012 1.27
4/24/2012 **
4/25/2012 **
4/26/2012 **
4/27/2012 0.06
4/28/2012 **
4/29/2012 **
4/30/2012 0.20
5/1/2012 0.18
5/2/2012 **
5/3/2012 **
5/4/2012 **
5/5/2012 **
5/6/2012 **
5/7/2012 **
5/8/2012 0.05
5/9/2012 0.07
5/10/2012 0.29
5/11/2012 **
5/12/2012 **
5/13/2012 **
5/14/2012 **
5/15/2012 **
5/16/2012 0.92
5/17/2012 0.00
5/18/2012 **
5/19/2012 **
5/20/2012 **
5/21/2012 **
5/22/2012 **
5/23/2012 **
5/24/2012 **
5/25/2012 **
5/26/2012 **
5/27/2012 **
5/28/2012 0.15
5/29/2012 **
5/30/2012 0.24
5/31/2012
6/1/2012
6/2/2012
6/3/2012
6/4/2012
6/5/2012 0.05
6/6/2012 **
6/7/2012 **
6/8/2012 **
6/9/2012 **
6/10/2012 **
6/11/2012 **
6/12/2012 **
6/13/2012 **
6/14/2012 **
6/15/2012 **
6/16/2012 **
6/17/2012 **
6/18/2012 **
6/19/2012 **
6/20/2012 **
6/21/2012 **
6/22/2012 **
6/23/2012 **
6/24/2012 **
6/25/2012 0.60
6/26/2012
6/27/2012
6/28/2012
6/29/2012
6/30/2012 1.02
Day of YearDaily PrcpMultiday Prcp
7/1/2012 **
7/2/2012 **
7/3/2012 0.00
7/4/2012 **
7/5/2012 **
7/6/2012 **
7/7/2012 **
7/8/2012 **
7/9/2012 **
7/10/2012 **
7/11/2012 **
7/12/2012 **
7/13/2012 **
7/14/2012 **
7/15/2012 **
7/16/2012 **
7/17/2012 **
7/18/2012 **
7/19/2012 **
7/20/2012 **
7/21/2012 3.90
7/22/2012 0.17 **
7/23/2012 **
7/24/2012 **
7/25/2012 **
7/26/2012 **
7/27/2012 **
7/28/2012 **
7/29/2012 0.11
7/30/2012 **
7/31/2012 **
8/1/2012 0.00
8/2/2012 **
8/3/2012 0.08
8/4/2012
8/5/2012
8/6/2012 0.06
8/7/2012
8/8/2012
8/9/2012 0.00
8/10/2012 **
8/11/2012 **
8/12/2012 **
8/13/2012 **
8/14/2012 0.99
8/15/2012 0.00
8/16/2012 0.00
8/17/2012 0.00 **
8/18/2012 0.23 0.23
8/19/2012 **
8/20/2012 0.02
8/21/2012
8/22/2012 0.00
8/23/2012 0.00
8/24/2012 0.00
8/25/2012 **
8/26/2012 **
8/27/2012 0.70
8/28/2012 0.01
8/29/2012 0.00
8/30/2012 0.00
8/31/2012 0.00
9/1/2012 0.00
9/2/2012 **
9/3/2012 **
9/4/2012 **
9/5/2012 **
9/6/2012 **
9/7/2012 **
9/8/2012 **
9/9/2012 **
9/10/2012 **
9/11/2012 **
9/12/2012 0.83
9/13/2012 0.00
9/14/2012 0.00
9/15/2012 0.00
9/16/2012 0.00
9/17/2012 0.00
9/18/2012 0.81
9/19/2012 0.05
9/20/2012
9/21/2012
9/22/2012
9/23/2012
9/24/2012
9/25/2012
9/26/2012 0.02
9/27/2012 **
9/28/2012 0.36
9/29/2012 **
9/30/2012 **



Observation Date Observation Time Precipitation Snowfall Snowfall SWE Snow Depth Snow SWE Notes
10/2/2011 4:01 PM 0.52 M M M M 0.52" from last evening and overnight rain, recorded 4:01 PM.
10/12/2011 5:36 PM 0.26 M M M M Occasional sprinkles starting around noon. Roads wet by 1:15. Moderate rain at 4:13. Rain stopped, 0.26", by 5:36.
10/13/2011 4:07 PM 0.26 M M M M +0.26" from overnight and early morning precipitation, recorded at 11:22 AM. Additional trace of rain at 12:37 PM. No further precipitation up to 4:07.
10/19/2011 5:44 PM 0.29 M M M M 0.29" from overnight rain, a short stub of the primary rainbow in distant rain to west, at 9:42 AM. Sprinkles off and on thereafter; 0.01" at 2:33 PM. Fine light rain again by 5:44.
10/20/2011 6:38 PM 0.14 M M M M 0.14" from additional overnight rain, recorded at 10:29 AM (APE). No further rain to 6:38 PM.
11/1/2011 11:46 AM 0.01 M M M M 0.01" in gauge, but almost certainly mostly (if not completely) from residual wetness in gauge after I emptied it carefully last night at 8:23 PM.
11/10/2011 3:49 PM 0.03 M M M M Very light, fine rain begins around 2 PM. 0.03" at 3:49.
11/16/2011 1:53 PM 0.40 M M M M Light fog; 0.40" at 1:53 PM
11/21/2011 4:04 PM 0.15 M M M M 0.15" from rain beginning yesterday afternoon, recorded at 11:37 AM. In afternoon, a few spits begin ca. 3:55 PM. Misty drizzle, sidewalk 95% wet by 4:04.
11/29/2011 5:06 PM 0.49 M M M M 0.03" from overnight rain at 10:05 AM. A bit of fine mist by 10:38; light rain begins at 10:42. Briefly heavy rain 10:45-10:46. Then steady light rain (occasionally stopping ) until after 3 PM, followed by occasional sprinkles. Rain stopped; +0.46" at 5:06.
12/6/2011 2:34 PM 0.14 M M M M Sprinkling, 0.03" at 10:23 AM. Sprinkles continue at 10:58. Light rain starts and stops; +0.11" at 2:34 PM.
12/7/2011 6:14 PM 1.96 M M M M Between 4:36 PM 12/6/11 and 3:37 PM today, there has been an additional 1.51" of rain. A further 0.45" fell by 6:14.
12/8/2011 1:16 PM 0.76 M M M M 0.76" recorded at 1:16 PM, although all of this must have fallen yesterday between 3:37 PM and midnight (the sky was clear in this general area by 11:34 PM).
12/15/2011 4:43 PM 0.01 M M M M Sundogs 9:35-9:48 AM. Very light rain by 3:15 PM; 0.01" at 4:43.
12/21/2011 3:01 PM 0.05 M M M M Sprinkles begin shortly before 10:35 AM. Very light rain by 11:39. Rain stopped, 0.02" at 12:58 PM. Light rain. +0.03" at 3:01.
12/22/2011 11:02 AM 0.03 M M M M Additional 0.03" from rain in progress yesterday afternoon 12/21, recorded at 11:02 AM
12/23/2011 10:03 AM 0.81 M M M M Rain began late yesterday (12/22/2011) afternoon, and continued into the night; 0.81" recorded at 10:03 AM.
1/11/2012 6:25 PM 0.14 M M M M No rain before 8:22 AM. Light rain by 12:33 PM. 0.14" at 6:25.
1/17/2012 12:43 PM 0.20 M M M M
1/20/2012 4:40 PM 0.00 0.0 M M M Sundog in overcast at 10:43 AM. Overcast slowly thickens through the day. Sun gone, but rain not started by 4:40 PM.
1/23/2012 5:39 PM 0.04 M M M M Fog (vis. 500-550 yd) at least from 11:21 AM to 5:39 PM. 0.01" at 11:28 AM, with sprinkles or very light rain off and on during the day. +0.03" at 5:39 PM.
1/27/2012 9:54 AM 0.50 M M M M 0.50" from overnight rain.
2/16/2012 4:54 PM 0.13 0.0 M M M 0.07" at 1:54 PM +0.06" at 4:54.
2/23/2012 9:33 AM 0.00 0.0 M M M Trace of rain overnight or early morning: shaded walks wet, small puddles on nominally flat roof, 0.0015" in rain gauge at 9:33 AM. No further rain during the day. . . . .
2/25/2012 12:36 PM 0.46 M M M M 0.46" from yesterday and yesterday evening rains (includes 0.02" for evaporation, based on post-rain loss from similar gauge at nearby station [MD-PG-12:Bowie 2.8WNW] )
2/29/2012 4:03 PM 1.15 M M M M 0.60" at 10:42 AM. Rain stopped before 12:05 PM; +0.45" at 12:10. Rain begins again shortly before 2:18, and stops close to 2:59; +0.10" recorded at 4:03.
3/1/2012 12:18 PM 0.48 M M M M The weather system that provided rain yesterday continued into the evening. +0.48" in gauge at 12:18 PM (APE).
3/3/2012 12:34 PM 0.76 M M M M 0.76" at 12:34 PM from storm that began yesterday and continued overnight.
3/9/2012 11:29 AM 0.03 M M M M 0.03" from overnight rain, recorded 11:29 AM.
3/20/2012 3:30 PM 0.34 M M M M Overnight and morning rain of 0.34" at 3:30 (APE).
4/2/2012 9:54 AM 0.11 M M M M Rain began last evening. 0.11" at 9:54 AM (APE).
4/19/2012 8:18 AM 0.10 M M M M Rain began yesterday afternoon or evening. 0.10" at 8:18 AM (APE).
4/23/2012 5:34 PM 1.27 M M M M Rain began Saturday 4/21/12. 1.25" at 1:56 PM. Occasional brief showers through the afternoon (From a high vantage point at 1:56, about a dozen showers were visible in the distance, scattered around the horizon. About half a dozen were similarly visible at 5:34).
5/1/2012 1:12 PM 0.18 M M M M 0.18" from overnight rain.
5/9/2012 10:43 AM 0.07 M M M M Additional 0.07" from rain that began yesterday afternoon.
5/10/2012 1:14 PM 0.29 M M M M Additional 0.07" from rain that began yesterday afternoon.
5/17/2012 7:00 AM 0.00 0.0 M M M
6/5/2012 11:47 AM 0.05 M M M M 0.05" from overnight rain.
6/30/2012 10:43 AM 1.02 M M M M 1.02" rain in gauge from last evening's severe thunderstorm, A centuries-old willow oak was split by the wind.
7/22/2012 2:00 PM 0.17 M M M M +0.17" from remainder of yesterday's rains, recorded at 2:00 PM.
8/6/2012 10:10 AM 0.06 M M M M 0.06" from afternoon-early evening rain yesterday 8/5/12.
8/9/2012 7:00 AM 0.00 0.0 M M M
8/15/2012 7:00 AM 0.00 0.0 M M M
8/16/2012 7:00 AM 0.00 0.0 M M M
8/17/2012 7:00 AM 0.00 0.0 M M M
8/18/2012 11:44 AM 0.23 0.0 M M M 0.23" from overnight rain, recorded at 11:44 AM.
8/22/2012 7:00 AM 0.00 0.0 M M M
8/23/2012 7:00 AM 0.00 0.0 M M M
8/24/2012 7:00 AM 0.00 0.0 M M M
8/28/2012 10:34 AM 0.01 M M M M No further rain during the day until I left at 5:45.
8/29/2012 7:00 AM 0.00 0.0 M M M
8/30/2012 7:00 AM 0.00 0.0 M M M
8/31/2012 7:00 AM 0.00 0.0 M M M
9/1/2012 12:56 PM 0.00 0.0 M M M No rain up to 12:56 PM.
9/13/2012 7:00 AM 0.00 0.0 M M M
9/14/2012 7:00 AM 0.00 0.0 M M M
9/15/2012 7:00 AM 0.00 0.0 M M M
9/16/2012 7:00 AM 0.00 0.0 M M M
9/17/2012 7:00 AM 0.00 0.0 M M M
9/18/2012 5:41 PM 0.81 M M M M 0.28" at 1:35 PM, APE. Light gusty wind up, gradually increases in intensity. A few spits on S-facing window at 3:21. Sudden moderate-heavy rain and strong gusty wind begins at 3:26, drops quickly to light rain at 3:35. Waxes and wanes to moderate until ca. 4:13, then very light-sprinkles until 4:56. +0.53" at 5:10.
9/19/2012 10:26 AM 0.05 M M M M Additional 0.05" to the end of yesterday's rain.
9/26/2012 12:24 PM 0.02 M M M M 0.02" probably from predawn rains.



Start Date End Date & Time Duration in Days Precipitation Snow Depth Snow Depth SWE Notes
11/11/2011 11/14/2011 10:54 AM 4 0.05 M M This represents the end of rains that began on 11/10/2011, and reported on that date. There has been no precipitation since the end of that storm. The reported amount includes 0.01" to account for evaporation (measured at nearby station MD-PG-12 Bowie 2.8 WNW over the intervening period).
11/17/2011 11/18/2011 9:58 AM 2 0.09 M M +0.09" from end of rain that began on Wednesday 11/16/11 and ended on 11/17/11; recorded at 9:58 AM.
11/19/2011 11/21/2011 4:04 PM 3 0.15 M M 0.15" from yesterday afternoon/evening rain, recorded at 11:37 AM 11/21. Sprinkles at 3:55 PM. Misty drizzle by 4:04.
11/22/2011 11/23/2011 1:24 PM 2 1.10 M M 1.10" from continued rain, recorded at 10:44 AM. Then partial clearing, followed by near overcast, from which very light rain begins just before 1:24.
1/21/2012 1/22/2012 6:08 PM 2 0.26 0.5 M 0.5" hard-crusted snow on insulated stepping stones, 0.26" melt in rain gauge at 6:08 PM. Very fine misty sprinkles of freezing rain began at 6:10.
4/24/2012 4/27/2012 10:42 AM 4 0.06 M M
4/28/2012 4/30/2012 10:34 AM 3 0.20 M M
5/2/2012 5/08/2012 12:20 PM 7 0.05 M M
5/11/2012 5/16/2012 1:21 PM 6 0.92 M M Most (all?) rain from Monday,5/14 and Tuesday, 5/15.
5/18/2012 5/28/2012 12:31 PM 11 0.15 M M
5/29/2012 5/30/2012 1:00 PM 2 0.24 M M Complete 22 degree solar halo on May 30 at 2:44 PM; slightly broken along upper 40 degrees of arc.
6/6/2012 6/25/2012 12:35 PM 20 0.60 M M Given the high temperatures (90 degrees or more) that occurred during this period, significant evaporation probably occurred.
7/1/2012 7/03/2012 4:00 AM 3 0.00 M M No rainfall during this period.
7/4/2012 7/21/2012 2:13 PM 18 3.90 M M
7/22/2012 7/29/2012 12:03 PM 8 0.11 M M
7/30/2012 8/01/2012 3:08 PM 3 0.00 M M Rain gauge empty at 3:08 PM 8/1/12.
8/2/2012 8/03/2012 11:49 AM 2 0.08 M M This must be mostly or all from yesterday's rains.
8/10/2012 8/14/2012 11:19 AM 5 0.99 M M Based on data from my other station (MD-PG-12) 4 miles east of here, I estimate that there could be 0.05" to 0.08" of evaporative loss in this interval. No additional rain occurred from 11:19 AM to 5:31 PM today.
8/17/2012 8/18/2012 11:44 AM 2 0.23 M M 0.23" at 11:44. No further rain when last checked at 6:14 PM.
8/19/2012 8/20/2012 11:30 AM 2 0.02 M M
8/25/2012 8/27/2012 11:13 AM 3 0.70 M M No further rain by 6:30 PM.
9/2/2012 9/12/2012 2:09 PM 11 0.83 M M Colleague remarked that rain occurred on September 01 evening and September 08 afternoon. Evaporative loss unknown.
9/27/2012 9/28/2012 10:24 AM 2 0.36 M M Principal rainfall occurred since afternoon of 9/27/12.
9/29/2012 10/01/2012 10:00 AM 3 0.05 M M Rain occurred yesterday evening and overnight.



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