Station Overview Station Location
Station Number MD-PG-12 Latitude 38.981064
Station Name Bowie 2.8 WNW Longitude -76.78107
County Prince George's Elevation (ft) 194



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 3.53 5.66 23 3.90 10 1.76 13 2 9 0 0.5 1 1
Nov 11 3.47 2.68 30 2.68 27 0.00 3 1 9 0 0.0 0 0
Dec 11 3.28 5.89 20 5.25 13 0.64 7 2 8 0 0.0 0 0
Jan 12 3.04 2.62 20 2.36 9 0.26 11 1 9 0 2.2 2 2
Feb 12 2.78 2.25 15 2.15 4 0.10 11 2 4 0 0.0 0 0
March 12 3.75 1.29 31 1.29 31 0.00 0 0 7 0 0.0 0 0
April 12 3.40 1.97 30 1.97 30 0.00 0 0 10 0 0.0 0 0
May 12 4.34 0.80 15 0.68 3 0.12 12 2 3 0 0.0 0 0
June 12 3.76 1.01 3 1.01 3 0.00 0 0 3 0 0.0 0 0
July 12 4.16 3.03 18 3.03 15 0.00 3 1 7 0 0.0 0 0
Aug 12 3.46 3.33 25 3.33 25 0.00 0 0 15 0 0.0 0 0
Sept 12 3.83 1.99 27 1.19 20 0.80 7 1 3 0 0.0 0 0
Water Year Totals: 42.80" 32.52" 257 days 28.84" 190 3.68" 67 days 12 87 days 0 days 2.7" 3 days 3 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 0.52
10/2/2011 0.20
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 0.33
10/13/2011 0.24
10/14/2011 0.40
10/15/2011 0.38
10/16/2011
10/17/2011
10/18/2011
10/19/2011 0.44
10/20/2011
10/21/2011 **
10/22/2011 **
10/23/2011 **
10/24/2011 0.00 **
10/25/2011 **
10/26/2011 **
10/27/2011 0.24
10/28/2011 0.16 **
10/29/2011 1.23 **
10/30/2011 **
10/31/2011 1.52
11/1/2011 0.20
11/2/2011 0.00
11/3/2011 0.00
11/4/2011 0.00
11/5/2011 0.00
11/6/2011 0.00
11/7/2011 0.00
11/8/2011 0.00
11/9/2011 0.00
11/10/2011 0.07
11/11/2011 0.00
11/12/2011 **
11/13/2011 **
11/14/2011 0.00
11/15/2011 0.00
11/16/2011 0.61
11/17/2011 0.02
11/18/2011 0.00
11/19/2011 0.00
11/20/2011 0.04
11/21/2011 0.22
11/22/2011 0.84
11/23/2011 0.18
11/24/2011 0.00
11/25/2011 0.00
11/26/2011 0.00
11/27/2011 0.00
11/28/2011 0.00
11/29/2011 0.50
11/30/2011 0.00
12/1/2011 0.00
12/2/2011 0.00
12/3/2011 0.00
12/4/2011 0.00
12/5/2011 0.00
12/6/2011 0.34
12/7/2011 2.59
12/8/2011 1.46
12/9/2011
12/10/2011
12/11/2011
12/12/2011
12/13/2011
12/14/2011
12/15/2011 0.02
12/16/2011
12/17/2011
12/18/2011
12/19/2011
12/20/2011
12/21/2011 0.09
12/22/2011 0.46
12/23/2011 0.28
12/24/2011 0.01
12/25/2011 **
12/26/2011 **
12/27/2011 **
12/28/2011 0.61
12/29/2011 **
12/30/2011 **
12/31/2011 0.03
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 0.10
1/10/2012
1/11/2012
1/12/2012 1.02
1/13/2012 0.22
1/14/2012
1/15/2012
1/16/2012 0.05
1/17/2012 0.19
1/18/2012
1/19/2012
1/20/2012 0.01
1/21/2012 0.33 **
1/22/2012 0.26
1/23/2012 0.02
1/24/2012
1/25/2012
1/26/2012
1/27/2012 0.42 **
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 0.02
2/6/2012 0.08
2/7/2012
2/8/2012 0.10
2/9/2012
2/10/2012
2/11/2012
2/12/2012
2/13/2012
2/14/2012
2/15/2012
2/16/2012 0.10
2/17/2012
2/18/2012
2/19/2012
2/20/2012
2/21/2012
2/22/2012
2/23/2012
2/24/2012 0.43
2/25/2012
2/26/2012
2/27/2012
2/28/2012
2/29/2012 1.52
3/1/2012 0.10
3/2/2012 0.40
3/3/2012 0.36
3/4/2012 0.00
3/5/2012 0.00
3/6/2012 0.00
3/7/2012 0.00
3/8/2012 0.00
3/9/2012 0.01
3/10/2012 0.00
3/11/2012 0.00
3/12/2012 0.00
3/13/2012 0.00
3/14/2012 0.00
3/15/2012 0.00
3/16/2012 0.00
3/17/2012 0.00
3/18/2012 0.00
3/19/2012 0.00
3/20/2012 0.20
3/21/2012 0.00
3/22/2012 0.00
3/23/2012 0.00
3/24/2012 0.10
3/25/2012 0.12
3/26/2012 0.00
3/27/2012 0.00
3/28/2012 0.00
3/29/2012 0.00
3/30/2012 0.00
3/31/2012 0.00
Day of YearDaily PrcpMultiday Prcp
4/1/2012 0.03
4/2/2012 0.08
4/3/2012 0.00
4/4/2012 0.00
4/5/2012 0.00
4/6/2012 0.00
4/7/2012 0.00
4/8/2012 0.00
4/9/2012 0.00
4/10/2012 0.00
4/11/2012 0.00
4/12/2012 0.00
4/13/2012 0.00
4/14/2012 0.00
4/15/2012 0.00
4/16/2012 0.00
4/17/2012 0.00
4/18/2012 0.06
4/19/2012 0.01
4/20/2012 0.00
4/21/2012 0.08
4/22/2012 1.36
4/23/2012 0.06
4/24/2012 0.00
4/25/2012 0.00
4/26/2012 0.08
4/27/2012 0.00
4/28/2012 0.05
4/29/2012 0.16
4/30/2012 0.00
5/1/2012 0.14
5/2/2012 **
5/3/2012 **
5/4/2012 **
5/5/2012 **
5/6/2012 **
5/7/2012 0.07
5/8/2012 0.04 0.05
5/9/2012 0.50
5/10/2012
5/11/2012
5/12/2012
5/13/2012
5/14/2012
5/15/2012
5/16/2012
5/17/2012
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
5/29/2012
5/30/2012
5/31/2012
6/1/2012
6/2/2012
6/3/2012
6/4/2012
6/5/2012
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 0.03
6/26/2012
6/27/2012
6/28/2012
6/29/2012 0.90
6/30/2012 0.08
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 0.00
7/7/2012
7/8/2012
7/9/2012
7/10/2012
7/11/2012 0.00
7/12/2012 0.00
7/13/2012 0.00
7/14/2012 0.10
7/15/2012 0.03
7/16/2012 0.00
7/17/2012 0.00
7/18/2012 0.24
7/19/2012 1.01
7/20/2012 0.30
7/21/2012 1.34
7/22/2012
7/23/2012
7/24/2012
7/25/2012
7/26/2012 0.01
7/27/2012
7/28/2012 0.00
7/29/2012
7/30/2012
7/31/2012 0.00
8/1/2012 0.04
8/2/2012 0.44
8/3/2012 0.00
8/4/2012 0.00
8/5/2012 0.38
8/6/2012 0.00
8/7/2012 0.00
8/8/2012 0.00
8/9/2012 0.00
8/10/2012 0.54
8/11/2012 0.18
8/12/2012 0.00
8/13/2012 0.00
8/14/2012 0.14
8/15/2012 0.00
8/16/2012 0.00
8/17/2012 0.04
8/18/2012 0.19
8/19/2012 0.03
8/20/2012 0.02
8/21/2012 0.44
8/22/2012
8/23/2012
8/24/2012
8/25/2012 0.04
8/26/2012 0.81
8/27/2012 0.01
8/28/2012 0.03
8/29/2012
8/30/2012
8/31/2012
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 0.80
9/9/2012 0.00
9/10/2012 0.00
9/11/2012 0.00
9/12/2012 0.00
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 0.93
9/19/2012 0.00
9/20/2012 0.00
9/21/2012 0.00
9/22/2012 0.00
9/23/2012 0.00
9/24/2012 0.00
9/25/2012 0.00
9/26/2012 0.05
9/27/2012 0.21
9/28/2012
9/29/2012
9/30/2012



Observation Date Observation Time Precipitation Snowfall Snowfall SWE Snow Depth Snow SWE Notes
10/1/2011 10:35 PM 0.52 M M M M Light rain begins shortly before 6:30 PM. 0.02" at 6:30, +0.17" at 7:37, +0.28" at 9:13, +0.05" at 10:35, with light rain continuing.
10/2/2011 7:28 PM 0.20 M M M M +0.20" from overnight rain at 7:59 AM; +Trace at 7:28 PM.
10/12/2011 11:47 PM 0.33 M M M M 0.01" at 8:02 AM. +0.24" at 6:42 PM +0.01" at 9:44 +0.07" at 11:47.
10/13/2011 7:16 PM 0.24 M M M M Occasional desultory rain continues overnight; +0.08" at 8:01 AM, +0.05" at 9:20 +0.11" at 4:34 PM. First hear distant thunder at 6:50; it passes to the west, and is gone by 7:16.
10/14/2011 11:50 PM 0.40 M M M M Intermittent rain continues from last night. +0.10" at 8:52 AM +0.28" at 10:24 +0.02" at 11:50 +0.04" at 2:04 PM. Sky nearly clear; no more rain at 6:23.
10/15/2011 1:00 PM 0.38 M M M M +0.38" from additional rain ending around mid-afternoon yesterday.
10/19/2011 11:01 PM 0.44 M M M M Rain begins after 1:09 AM. 0.28" at 8:00 +0.14" at 6:33 PM +0.02" at 11:01.
10/24/2011 6:00 PM 0.00 0.0 M M M Trace of rain recorded at 6 PM.
10/28/2011 7:00 AM 0.16 M M M M 0.16" in gauge recorded for me by neighbor at7 AM.
10/29/2011 11:59 AM 1.23 0.5 M 0.5 M Messy weather. Mixed rain and snow (snow to ~0.5" but not uniformly distributed on grass).
11/1/2011 8:00 AM 0.20 M M M M 0.01" at 12:33 AM +0.19" at 08:00.
11/2/2011 7:00 AM 0.00 0.0 M M M
11/3/2011 7:00 AM 0.00 0.0 M M M
11/4/2011 7:00 AM 0.00 0.0 M M M
11/5/2011 7:00 AM 0.00 0.0 M M M
11/6/2011 7:00 AM 0.00 0.0 M M M
11/7/2011 7:00 AM 0.00 0.0 M M M
11/8/2011 7:00 AM 0.00 0.0 M M M
11/9/2011 7:00 AM 0.00 0.0 M M M
11/10/2011 10:08 PM 0.07 M M M M Overcast, fog (visibility 200 yd) at 8:09 AM. Rain begins in afternoon. 0.03" at 4:18 PM +0.04" at 10:08 (APE).
11/11/2011 7:00 AM 0.00 0.0 M M M
11/15/2011 7:00 AM 0.00 0.0 M M M
11/16/2011 11:43 PM 0.61 M M M M Rain begins after midnight. 0.12" at 7:58 AM, +0.16" with steady light rain continuing, at 10:05. Additional 0.15" at 11:48 +0.05" at 2:55 PM +0.01" at 5:25 +0.01" at 7:06 +0.11" at 11:43
11/17/2011 8:03 AM 0.02 M M M M 0.02" in culmination of rain that started yesterday (11/16/11), recorded at 8:03 AM.
11/18/2011 7:00 AM 0.00 0.0 M M M
11/19/2011 7:00 AM 0.00 0.0 M M M
11/20/2011 11:27 PM 0.04 M M M M Trace of rain at 7:18 PM; a few fine spits at 10:26; 0.04", with very light rain, at 11:27.
11/21/2011 10:31 PM 0.22 M M M M Rain continues from overnight; +0.16" at 8:00 AM, with light fog (vis 200 yd). Sprinkling at 4:56 PM. +0.06" at 10:31.
11/22/2011 10:39 PM 0.84 M M M M Fine light mist at 8:02 AM. Light fine rain begins shortly before 9:12. +0.06" at 9:36. Brief sprinkles by 11:00. Essentially continual light rain begins by 11:45. Same, +0.32" at 2:19 PM. Rain picks up to heavy by 4:15, very heavy 4:21-4:23. +0.28" at 4:36. Rain more intermittent thereafter. +0.13" at 5:42 +0.05" at 10:39.
11/23/2011 3:26 PM 0.18 M M M M +0.18" from continued rain overnight, recorded at 8:04 AM. A few sprinkles at 3:26 PM.
11/24/2011 7:00 AM 0.00 0.0 M M M
11/25/2011 7:00 AM 0.00 0.0 M M M
11/26/2011 7:00 AM 0.00 0.0 M M M
11/27/2011 7:00 AM 0.00 0.0 M M M
11/28/2011 7:00 AM 0.00 0.0 M M M
11/29/2011 6:01 PM 0.50 M M M M 0.04" from overnight rain, recorded at 8:11. +0.46" at 6:01 PM.
11/30/2011 7:00 AM 0.00 0.0 M M M
12/1/2011 7:00 AM 0.00 0.0 M M M
12/2/2011 7:00 AM 0.00 0.0 M M M
12/3/2011 7:00 AM 0.00 0.0 M M M
12/4/2011 7:00 AM 0.00 0.0 M M M
12/5/2011 7:00 AM 0.00 0.0 M M M
12/6/2011 11:04 PM 0.34 M M M M 0.02" at 8:04 AM +0.25" at 6:31 PM +0.06" at 9:44 +0.01" at 11:04
12/7/2011 11:34 PM 2.59 M M M M +0.94" at 7:59 AM +0.07" at 8:27 +0.12" at 9:27 +0.63" at 6:51 PM +0.83" at 11:34.
12/8/2011 12:01 AM 1.46 M M M M +0.63" at 6:51 PM 12/7/2011 +0.83" at 11:34 PM.
12/15/2011 5:20 PM 0.02 M M M M
12/21/2011 5:11 PM 0.09 M M M M
12/22/2011 11:50 PM 0.46 M M M M No rain by 7:15 PM, but light rain by 8:30. 0.09" at 8:57 +0.37" at 11:50.
12/23/2011 8:04 AM 0.28 M M M M Rain that began yesterday (12/22/2011) afternoon continued into the night; 0.28" recorded at 8:04 AM.
12/24/2011 7:57 AM 0.01 M M M M
1/9/2012 10:30 PM 0.10 1.0 0.08 1.0 0.08 0.6" snow at 5:07 PM; 1.0" snow (0.08" melt from core) at 5:52; 0.10" H2O at 10:30. Snow then mostly melted overnight.
1/12/2012 7:57 AM 1.02 M M M M Rain began ca. 1:30 PM yesterday (1/11/12). 0.81" at 2:10 AM +0.21" at 7:57 (APE).
1/13/2012 7:40 AM 0.22 M M M M A bit of mist, then very fine rain begins at 12:03 AM. 0.22" at 7:40 (APE).
1/16/2012 11:46 PM 0.05 M M M M Very light rain begins between 8:03 and 9:26 PM. 0.05" at 11:46.
1/17/2012 10:10 AM 0.19 M M M M Rain continued overnight. +0.04" at 2:35 AM +0.01" at 8:03 +0.14" at 10:10.
1/20/2012 11:30 PM 0.01 M M M M Noticed first flakes of snow at 10:51 PM (had been watching for snow, but none before 10:49). Estimate 0.1" snow (0.01" H2O) at 11:30.
1/21/2012 9:45 PM 0.33 1.2 0.28 1.2 0.28 Estimate 0.2" snow at 12:13 AM. Measure 1.2" snow (slightly wet from rain), giving 0.24" H2O from cores, at 3:50. Measure 1.2" wetter snow with 0.1" icy crust (0.28" H2O from cores), with 0.32" H2O from total snow+rain catch in rain gauge at 8:00. Additional 0.01" H2O at 9:54 PM.
1/23/2012 11:00 PM 0.02 M M M M Light fog (vis ~300 yd) at 8:00 AM. 0.02", light fog at 6:23 PM. Rain spits at 8:37. Fog gone by 9:56. Spits provide an additional trace of rain by 11:00.
1/27/2012 9:35 AM 0.42 M M M M Rain begins after midnight; trace by 5:03 AM. 0.18" at 8:09. Dark clouds, moderate rain at 9:17; heavy at 9:19; light at 9:25. +0.24" at 9:35.
2/8/2012 10:44 PM 0.10 M M M M 0.02" at 4:08 PM +0.06" at 6:00 +0.02" at 10:44.
2/16/2012 5:22 PM 0.10 M M M M Trace of rain by 8:00 AM; not raining at 8:30. 0.03" at 12:29 PM +0.02" at 1:14 +0.05 at 5:22. Sky clearing, very light fog at 8:51.
2/24/2012 8:46 PM 0.43 M M M M Early morning rain yielded 0.11" before 7:20 AM; then a trace by 9:15. Steady sprinkles begin shortly after 1:30 PM, steady light rain by 2:07. A short clap of thunder at 2:24 and a long roll at 2:27; no further thunder. Rain varies slowly, stopping by 3:17. +0.27" at 3:35. Light rain again by 3:39, with +0.04" at 4:11. Light rain again at 5:21; stopped with +0.01" at 5:47. No further measurable rain. Sudden roar as wind arrived at 8:46; gusty wind continues at 10:59......
2/29/2012 11:54 PM 1.52 M M M M First sprinkles at 7:58 AM. 0.26" at 9:51 +0.16" at 10:18 +0.60" at 12:50 PM +0.10" at 5:00 +0.40" and a single brief roll of thunder at 12:54.
3/1/2012 12:54 AM 0.10 M M M M +0.10" to yesterday's rains, at 12:54 AM.
3/2/2012 11:57 PM 0.40 M M M M Sprinkles begin around 3:15 PM. 0.01" at 4:14 +0.08" at 6:21. Thunder and l/m rain 11:00-11:05; +0.10" at 11:16. Thunder and l/m rain move in from distance and away 11:22-11:42; +0.12" at 11:57.
3/3/2012 8:54 AM 0.36 M M M M Rain storm continues through the night. +0.09" at 12:20 AM +0.21" at 7:59 +0.06" at8:54.
3/4/2012 7:00 AM 0.00 0.0 M M M
3/5/2012 7:00 AM 0.00 0.0 M M M
3/6/2012 7:00 AM 0.00 0.0 M M M
3/7/2012 7:00 AM 0.00 0.0 M M M
3/8/2012 7:00 AM 0.00 0.0 M M M
3/9/2012 4:06 AM 0.01 M M M M 0.01" and a few misty drops in air at 4:06 AM.
3/10/2012 7:00 AM 0.00 0.0 M M M
3/11/2012 7:00 AM 0.00 0.0 M M M
3/12/2012 7:00 AM 0.00 0.0 M M M
3/13/2012 7:00 AM 0.00 0.0 M M M
3/14/2012 7:00 AM 0.00 0.0 M M M
3/15/2012 7:00 AM 0.00 0.0 M M M
3/16/2012 7:00 AM 0.00 0.0 M M M
3/17/2012 7:00 AM 0.00 0.0 M M M
3/18/2012 7:00 AM 0.00 0.0 M M M
3/19/2012 7:00 AM 0.00 0.0 M M M
3/20/2012 8:48 AM 0.20 M M M M Awaken at 6:25 AM to sounds of large drops striking roof. A few soft languid rolls of thunder 6:30-6:33. 0.19" at 7:15 + 0.01" at 8:48.
3/21/2012 7:00 AM 0.00 0.0 M M M
3/22/2012 7:00 AM 0.00 0.0 M M M
3/23/2012 7:00 AM 0.00 0.0 M M M
3/24/2012 7:21 PM 0.10 M M M M Very light rain begins shortly before noon. 0.08" at 1:22 PM. Sprinkles begin again somewhat before 5:00; +0.01" at 7:21. A bit of misty drizzle at 8:58. +0.01" at 11:28.
3/25/2012 10:49 AM 0.12 M M M M +0.08" from continued overnight rain at 7:57 AM, +0.04" at 10:49 AM.
3/26/2012 7:00 AM 0.00 0.0 M M M
3/27/2012 7:00 AM 0.00 0.0 M M M
3/28/2012 7:00 AM 0.00 0.0 M M M
3/29/2012 7:00 AM 0.00 0.0 M M M
3/30/2012 7:00 AM 0.00 0.0 M M M
3/31/2012 7:00 AM 0.00 0.0 M M M
4/1/2012 11:18 PM 0.03 M M M M Brief sprinkles at 6:24 PM. Steady sprinkles begin after 8:07. 0.02" at 10:02 +0.01" at 11:18.
4/2/2012 7:58 AM 0.08 M M M M Very light rain began last evening. +0.08" at 7:58 AM (APE).
4/3/2012 7:00 AM 0.00 0.0 M M M
4/4/2012 7:00 AM 0.00 0.0 M M M
4/5/2012 7:00 AM 0.00 0.0 M M M
4/6/2012 7:00 AM 0.00 0.0 M M M
4/7/2012 7:00 AM 0.00 0.0 M M M
4/8/2012 7:00 AM 0.00 0.0 M M M
4/9/2012 7:00 AM 0.00 0.0 M M M
4/10/2012 7:00 AM 0.00 0.0 M M M
4/11/2012 7:00 AM 0.00 0.0 M M M
4/12/2012 7:00 AM 0.00 0.0 M M M
4/13/2012 7:00 AM 0.00 0.0 M M M
4/14/2012 7:00 AM 0.00 0.0 M M M
4/15/2012 7:00 AM 0.00 0.0 M M M
4/16/2012 7:00 AM 0.00 0.0 M M M
4/17/2012 7:00 AM 0.00 0.0 M M M
4/18/2012 6:04 PM 0.06 M M M M A few fine spits at 1:10 PM. Light rain by 2:03. 0.05" at 2:50 +0.01" at 6:04.
4/19/2012 7:56 AM 0.01 M M M M Additional 0.01" in rains that began yesterday, recorded at 7:59 AM (APE).
4/20/2012 7:00 AM 0.00 0.0 M M M
4/21/2012 9:18 PM 0.08 M M M M Light gusty wind up around 6:50 PM. Road damp by 7:45. Light rain by 7:50, with brief shower at 7:53. 0.05" at 8:07 +0.03" at 9:18.
4/22/2012 10:56 PM 1.36 M M M M +0.01"at 5:33 AM +0.01" at 8:08 +0.04" with light rain at 10:41 +0.68" at 5:03 PM +0.14" with light rain at 6:27 +0.19" with light rain at 7:51 +0.29" at 10:56
4/23/2012 6:13 PM 0.06 M M M M Rain continues from yesterday. +0.02" at 8:01 AM. A brief shower 11:05-11:15. +0.03" at 1:33 PM +0.01" at 6:13.
4/24/2012 7:00 AM 0.00 0.0 M M M
4/25/2012 7:00 AM 0.00 0.0 M M M
4/26/2012 9:40 PM 0.08 M M M M 0.04" from overnight rain at 8:12 AM +0.04" at 10:28 +Trace at 9:40 PM.
4/27/2012 7:00 AM 0.00 0.0 M M M
4/28/2012 10:11 PM 0.05 M M M M Light rain began at 6:06 PM. 0.04" at 7:25 +0.01" at 10:11.
4/29/2012 8:06 AM 0.16 M M M M +0.16" from overnight continuation of rain that began at 6:06 PM yesterday, recorded at 8:06 AM today.
4/30/2012 7:00 AM 0.00 0.0 M M M
5/1/2012 8:01 AM 0.14 M M M M
5/8/2012 11:43 PM 0.04 M M M M 0.04" of daytime rain, recorded at 4:04 PM. Additional occasional light rain added just a bit more by 11:43.
5/9/2012 11:58 PM 0.50 M M M M +0.32" from overnight rain, recorded at 8:11 AM. Late afternoon and evening rain added 0.15" by 10:25, +0.03" by 11:58. Sprinkles continued.
6/25/2012 7:59 AM 0.03 M M M M Final 0.03" overnight residual rain to 0.51" reported during last evening's thunderstorm.
6/29/2012 11:27 PM 0.90 M M M M Occasional soft distant thunder at 10:34 PM. Moderate-strong wind up suddenly, with brief spray of rain at 10:51. Very strong wind at 10:54; house shakes, two 5" branches of red maple graze roof at 10:57. Moderately gusty wind with moderate-heavy rain and nearly continuous flickers of lightning at 11:04-11:18. Wind and rain drop of fairly rapidly, leaving the most peculiar thunder: rolling, rumbling, surging, fading, swelling, diminishing, while all the time rapidly ricochetting back and forth across the sky. I then realized that this was a consequence of the randomly striking, widely distributed sources of lightning. It was the weirdest thunder I have ever heard. The storm was fairly far off by 11:25. 0.90" rain and sprinkling at 11:27. Much small-medium breakage on ground from trees.
6/30/2012 8:01 AM 0.08 M M M M Two 5" diameter limbs of maple down from last evening's wind storm. +0.08" at 8:01 AM
7/6/2012 7:00 AM 0.00 0.0 M M M
7/11/2012 7:00 AM 0.00 0.0 M M M
7/12/2012 7:00 AM 0.00 0.0 M M M
7/13/2012 7:00 AM 0.00 0.0 M M M
7/14/2012 8:13 PM 0.10 M M M M Overcast at 4:50 AM. Sprinkling by 5:53. Trace of rain by 6:53. 0.10" at 10:36. No further rain by 8:13 PM.
7/15/2012 7:34 PM 0.03 M M M M First hear long rolls of thunder at 6:36 PM. Light wind up, first rain at 7:03. 0.03", rain stopped by 7:34.
7/16/2012 7:00 AM 0.00 0.0 M M M
7/17/2012 7:00 AM 0.00 0.0 M M M
7/18/2012 6:04 PM 0.24 M M M M First hear distant thunder to NW at 3:52 PM. Gusty wind up, first sprinkles at 4:39. Cloud-ground lightning to W at 4:44. Occasional soft thunder continues. Shower 4:48-5:02; 0.04" at 5:05. Light-moderate rain, occasional thunder ends 5:42; +0.20" at 6:04.
7/19/2012 11:58 AM 1.01 M M M M Thunderstorm moving W-E very slowly 8:51-11:58 PM. Heat lightning first, then lightning with thunder, sometimes frequent, but never violent. Rain variable from light to moderate. 0.04" at 9:36 +0.97" at 11:58.
7/20/2012 6:19 PM 0.30 M M M M Distant thunder to SW at 12:23 AM. Spattering of rain on roof at 12:42; light rain at 12:45. +0.29" at 6:04 AM. Occasional sprinkles beginning at 1:21 PM. +0.01" at 6:19 PM.
7/21/2012 5:58 PM 1.34 M M M M Rain continued overnight. +0.24" at 8:00 AM +0.80" at 10:47 +0.10" at 2:58PM +0.03" at 4:18 +0.07" at 5:58 +0.10" at 10:11.
7/26/2012 11:10 PM 0.01 M M M M Overcast; moderate wind up suddenly at 10:14 PM. First raindrops at 10:28. 0.01" at 11:10.
7/28/2012 10:31 PM 0.00 0.0 M M M Two fairly compact thunderstorms passed nearby to the south of us (proximity verified by NWS radar). Each had a fair amount of lightning and thunder, but neither gave me any rain at all. I heard thunder from the first from 5:30 - 5:46 PM, and from the second 8:15 - 9:01 PM.
7/31/2012 4:33 PM 0.00 0.0 M M M First heard distant thunder at 4:01 PM. NWS radar showed small cell over Washington DC. Long rolls of thunder to WNW until 4:19; then to NNW at 4:33. No rain at all here.
8/1/2012 8:16 PM 0.04 M M M M A trace of rain by 6:06 AM, with a bit more at 6:19. After a delay, rain begins after 7:59 but before 8:41; 0.04" at 9:33 AM. No further rain by 8:16 PM
8/2/2012 4:28 PM 0.44 M M M M Thunder, 0.07" rain at 3:14 PM. Thunder, rain wax and wane. +0.37" at 4:28 APE. NWS radar shows a modest cell passing over Bowie ca. 3:05-4:26 PM.
8/3/2012 7:00 AM 0.00 0.0 M M M
8/4/2012 7:00 AM 0.00 0.0 M M M
8/5/2012 11:35 PM 0.38 M M M M Light wind, temperature dropping at 4:56 PM. Rain (big drops) begins suddenly at 5:15, but slackens beginning at 5:18. Rain begins suddenly again at 5:41, slackening again after 5:45. One long very soft roll of thunder at 5:48. 0.30" rain by 6:09. Lightly raining again by 7:09; continues at 7:32. Rain stopped, +0.08" at 8:04. No further rain by 11:35.
8/6/2012 7:00 AM 0.00 0.0 M M M
8/7/2012 7:00 AM 0.00 0.0 M M M
8/8/2012 7:00 AM 0.00 0.0 M M M
8/9/2012 7:00 AM 0.00 0.0 M M M
8/10/2012 9:57 AM 0.54 M M M M Very light rain, 0.01" at 6:50 AM +0.05" at 8:01 +0.48" at 9:57.
8/11/2012 6:41 PM 0.18 M M M M 0.06" from early morning rain, recorded 8:15 AM. Rain-free until after 6:00 PM. Hear distant thunder to S at 6:03. Rain shower with occasional soft thunder ca. 6:15 to 6:32; +0.09" at 6:41. Light rain begins 8:06; _0.03" at 9:16.
8/12/2012 7:00 AM 0.00 0.0 M M M
8/13/2012 7:00 AM 0.00 0.0 M M M
8/14/2012 9:11 AM 0.14 M M M M 0.08" recorded at 8:06 AM +0.06" at 9:11.
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 11:16 PM 0.04 M M M M Brief rain begins at 10:25 PM. 0.04" at 11:16; occasional "heat lightning", soft thunder to SSE.
8/18/2012 4:05 AM 0.19 M M M M Rain begins again before midnight. +0.19" at 4:05 AM (APE).
8/19/2012 3:18 PM 0.03 M M M M First sprinkles ca. 1 PM. 0.03" at 3:18 PM, +trace at 7:14.
8/20/2012 11:03 AM 0.02 M M M M Sprinkles at 8:00 AM. 0.02" at 11:03.
8/21/2012 7:59 AM 0.44 M M M M
8/25/2012 5:04 PM 0.04 M M M M Sprinkles begin at 2:52 PM. 0.03" at 3:55 +0.01" at 5:04.
8/26/2012 9:46 PM 0.81 M M M M +0.01" at 8:02 AM +0.02" at12:47 PM. Rain heavy, with occasional thunder, at 1:17; slackens gradually to stop by 1:48; +0.27" at 1:50. Very light rain at 2:20, then variably light-heavy, with occasional thunder; stops by 2:47; +0.18" at 2:50. Sudden moderate rain at 4:26 increases quickly to heavy, remains heavy to 4:29, then quickly to light by 4:30. no rain, but occasional soft thunder 4:43-4:52. +0.26" at 5:07. +0.03" at 9:46.
8/27/2012 6:50 AM 0.01 M M M M +0.01" at 6:50 AM.
8/28/2012 9:41 AM 0.03 M M M M 0.01" at 7:12 AM +0.02" at 9:41.
9/1/2012 12:56 PM 0.00 0.0 M M M No rain up to 12:56 PM.
9/9/2012 7:00 AM 0.00 0.0 M M M
9/10/2012 7:00 AM 0.00 0.0 M M M
9/11/2012 7:00 AM 0.00 0.0 M M M
9/12/2012 7:00 AM 0.00 0.0 M M M
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 11:29 PM 0.00 0.0 M M M A bit of fine rain in evening, with trace by 10:36 PM. Additonal trace by 11:19.
9/18/2012 11:05 PM 0.93 M M M M 0.01: at 12:21 AM +0.21" at 6:05 +0.02"at 12:47 PM +0.64" in windy afternoon storm with periods of heavy rain, recorded after principal rain had fallen at 6:02 +0.04" at 11:05. +0.01" at 11:57.
9/19/2012 7:00 AM 0.00 0.0 M M M
9/20/2012 7:00 AM 0.00 0.0 M M M
9/21/2012 7:00 AM 0.00 0.0 M M M
9/22/2012 7:00 AM 0.00 0.0 M M M
9/23/2012 7:00 AM 0.00 0.0 M M M
9/24/2012 7:00 AM 0.00 0.0 M M M
9/25/2012 7:00 AM 0.00 0.0 M M M
9/26/2012 8:00 AM 0.05 M M M M 0.05" from predawn rain.
9/27/2012 11:45 PM 0.21 M M M M First hear thunder at 9:08 PM. This then occurred in a number of separate brief episodes that passed from SW to NE. 0.21" at 11:45 PM.



Start Date End Date & Time Duration in Days Precipitation Snow Depth Snow Depth SWE Notes
10/21/2011 10/31/2011 8:23 PM 11 1.52 M M I was out of town during this period. I have no information on snow amount, if any.
10/26/2011 10/27/2011 7:00 PM 2 0.24 M M Gauge read for me by neighbor.
11/12/2011 11/14/2011 8:00 AM 3 0.00 M M
12/25/2011 12/28/2011 8:00 AM 4 0.61 M M Previous report was only up to 7:57 AM on 12/24/11, so this report may contain precipitation for the remainder of that day.
12/29/2011 12/31/2011 8:00 AM 3 0.03 M M
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" H2O from total catch in rain gauge, at 6:08 PM
1/27/2012 2/06/2012 6:12 PM 11 0.08 M M As measured in two open containers (not rain gauge) set out as backups while on trip. This period overlaps the period covered by a rain gauge measurement (0.02")recorded by neighbor on 2/5/12. I cannot explain the discrepancy, other than the possibility that neighbor may have read rain gauge earlier, and did not record it.
1/28/2012 2/05/2012 8:00 AM 9 0.02 M M Rain gauge read by neighbor.
5/2/2012 5/08/2012 9:29 AM 7 0.05 M M
5/3/2012 5/07/2012 7:12 PM 5 0.07 M M
7/1/2012 7/03/2012 4:00 AM 3 0.00 M M CANCEL THIS REPORT. IT IS FOR THE WRONG STATION.
9/2/2012 9/08/2012 8:00 PM 7 0.80 M M



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