Station Overview Station Location
Station Number MD-AA-3 Latitude 39.099843
Station Name Laurel 2.7 E Longitude -76.809011
County Anne Arundel Elevation (ft) 227



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 09 3.67 6.44 31 4.00 29 2.44 2 1 12 3 0.0 0 0
Nov 09 3.57 4.68 30 4.68 30 0.00 0 0 14 2 0.0 0 0
Dec 09 3.45 8.04 31 6.08 28 1.96 3 1 11 1 3.0 3 8
Jan 10 3.17 2.03 31 2.03 31 0.00 0 0 8 3 7.7 2 4
Feb 10 2.93 5.33 28 5.33 28 0.00 0 0 9 2 55.6 7 27
March 10 3.95 5.18 31 5.18 31 0.00 0 0 14 1 0.0 0 4
April 10 3.49 2.25 30 2.25 30 0.00 0 0 6 2 0.0 0 0
May 10 4.41 2.59 31 2.59 31 0.00 0 0 13 2 0.0 0 0
June 10 3.73 2.41 30 2.41 30 0.00 0 0 7 4 0.0 0 0
July 10 4.08 3.64 31 3.64 31 0.00 0 0 9 0 0.0 0 0
Aug 10 3.37 7.66 31 7.66 31 0.00 0 0 14 2 0.0 0 0
Sept 10 4.09 4.50 30 4.50 30 0.00 0 0 7 0 0.0 0 0
Water Year Totals: 43.91" 54.75" 365 days 50.35" 360 4.40" 5 days 2 124 days 22 days 66.3" 12 days 43 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
10/1/2009 T
10/2/2009 0.00
10/3/2009 0.13
10/4/2009 0.00
10/5/2009 0.00
10/6/2009 0.00
10/7/2009 0.03
10/8/2009 0.00
10/9/2009 0.00
10/10/2009 0.02
10/11/2009 0.01
10/12/2009 0.00
10/13/2009 0.00
10/14/2009 0.00
10/15/2009 0.10
10/16/2009 0.72
10/17/2009 **
10/18/2009 2.44
10/19/2009 0.02
10/20/2009 0.00
10/21/2009 0.00
10/22/2009 0.00
10/23/2009 0.00
10/24/2009 0.03
10/25/2009 1.12
10/26/2009 0.00
10/27/2009 0.52
10/28/2009 1.28
10/29/2009 T
10/30/2009 T
10/31/2009 0.02
11/1/2009 0.39
11/2/2009 0.15
11/3/2009 0.00
11/4/2009 0.00
11/5/2009 0.00
11/6/2009 0.01
11/7/2009 0.00
11/8/2009 0.00
11/9/2009 0.00
11/10/2009 0.00
11/11/2009 0.11
11/12/2009 1.01
11/13/2009 0.33
11/14/2009 0.42
11/15/2009 0.01
11/16/2009 0.00
11/17/2009 0.00
11/18/2009 0.00
11/19/2009 0.01
11/20/2009 0.75
11/21/2009 0.00
11/22/2009 0.00
11/23/2009 T
11/24/2009 1.07
11/25/2009 0.20
11/26/2009 0.08
11/27/2009 0.14
11/28/2009 T
11/29/2009 0.00
11/30/2009 0.00
12/1/2009 0.22
12/2/2009 0.00
12/3/2009 0.93
12/4/2009 0.00
12/5/2009 0.02
12/6/2009 0.79
12/7/2009 0.00
12/8/2009 T
12/9/2009 1.58
12/10/2009 0.01
12/11/2009 0.00
12/12/2009 0.00
12/13/2009 0.03
12/14/2009 0.64
12/15/2009 0.00
12/16/2009 0.00
12/17/2009 0.00
12/18/2009 0.00
12/19/2009 **
12/20/2009 **
12/21/2009 1.96
12/22/2009 0.00
12/23/2009 0.00
12/24/2009 0.00
12/25/2009 0.00
12/26/2009 1.29
12/27/2009 0.15
12/28/2009 0.00
12/29/2009 0.00
12/30/2009 0.00
12/31/2009 0.42
Day of YearDaily PrcpMultiday Prcp
1/1/2010 T
1/2/2010 0.00
1/3/2010 0.00
1/4/2010 0.00
1/5/2010 T
1/6/2010 0.00
1/7/2010 0.00
1/8/2010 0.10
1/9/2010 0.00
1/10/2010 0.00
1/11/2010 0.00
1/12/2010 0.00
1/13/2010 0.00
1/14/2010 0.00
1/15/2010 0.00
1/16/2010 0.00
1/17/2010 0.01
1/18/2010 0.68
1/19/2010 0.00
1/20/2010 0.02
1/21/2010 0.00
1/22/2010 0.18
1/23/2010 T
1/24/2010 0.00
1/25/2010 0.57
1/26/2010 0.14
1/27/2010 0.00
1/28/2010 0.00
1/29/2010 0.00
1/30/2010 0.00
1/31/2010 0.33
2/1/2010 0.00
2/2/2010 0.00
2/3/2010 0.39
2/4/2010 0.00
2/5/2010 0.00
2/6/2010 2.47
2/7/2010 0.63
2/8/2010 0.00
2/9/2010 0.00
2/10/2010 0.68
2/11/2010 0.77
2/12/2010 0.00
2/13/2010 0.00
2/14/2010 0.00
2/15/2010 0.00
2/16/2010 0.04
2/17/2010 0.00
2/18/2010 T
2/19/2010 0.00
2/20/2010 0.00
2/21/2010 0.00
2/22/2010 0.00
2/23/2010 0.26
2/24/2010 0.00
2/25/2010 0.03
2/26/2010 T
2/27/2010 0.06
2/28/2010 0.00
3/1/2010 0.00
3/2/2010 0.00
3/3/2010 0.13
3/4/2010 0.01
3/5/2010 0.00
3/6/2010 0.00
3/7/2010 0.00
3/8/2010 0.00
3/9/2010 0.00
3/10/2010 0.00
3/11/2010 0.00
3/12/2010 0.53
3/13/2010 1.00
3/14/2010 1.63
3/15/2010 0.07
3/16/2010 0.04
3/17/2010 0.00
3/18/2010 0.00
3/19/2010 0.00
3/20/2010 0.00
3/21/2010 0.00
3/22/2010 0.03
3/23/2010 0.43
3/24/2010 T
3/25/2010 0.00
3/26/2010 0.23
3/27/2010 0.07
3/28/2010 0.00
3/29/2010 0.73
3/30/2010 0.15
3/31/2010 0.13
Day of YearDaily PrcpMultiday Prcp
4/1/2010 0.00
4/2/2010 0.00
4/3/2010 0.00
4/4/2010 0.00
4/5/2010 0.00
4/6/2010 T
4/7/2010 0.00
4/8/2010 0.00
4/9/2010 0.71
4/10/2010 0.00
4/11/2010 0.00
4/12/2010 0.00
4/13/2010 0.00
4/14/2010 0.15
4/15/2010 0.00
4/16/2010 0.00
4/17/2010 T
4/18/2010 0.00
4/19/2010 0.00
4/20/2010 0.00
4/21/2010 0.00
4/22/2010 0.56
4/23/2010 0.00
4/24/2010 0.00
4/25/2010 0.14
4/26/2010 0.66
4/27/2010 0.03
4/28/2010 0.00
4/29/2010 0.00
4/30/2010 0.00
5/1/2010 0.00
5/2/2010 0.00
5/3/2010 0.33
5/4/2010 0.02
5/5/2010 0.00
5/6/2010 0.00
5/7/2010 0.00
5/8/2010 0.00
5/9/2010 0.00
5/10/2010 0.00
5/11/2010 0.00
5/12/2010 0.22
5/13/2010 0.52
5/14/2010 0.01
5/15/2010 T
5/16/2010 0.00
5/17/2010 0.02
5/18/2010 0.37
5/19/2010 0.21
5/20/2010 T
5/21/2010 0.00
5/22/2010 0.00
5/23/2010 0.45
5/24/2010 0.06
5/25/2010 0.01
5/26/2010 0.00
5/27/2010 0.00
5/28/2010 0.28
5/29/2010 0.09
5/30/2010 0.00
5/31/2010 0.00
6/1/2010 0.00
6/2/2010 0.00
6/3/2010 0.00
6/4/2010 0.25
6/5/2010 T
6/6/2010 0.00
6/7/2010 0.20
6/8/2010 0.00
6/9/2010 T
6/10/2010 0.13
6/11/2010 0.00
6/12/2010 0.00
6/13/2010 T
6/14/2010 0.00
6/15/2010 0.00
6/16/2010 0.06
6/17/2010 0.12
6/18/2010 0.00
6/19/2010 0.00
6/20/2010 0.00
6/21/2010 0.00
6/22/2010 0.00
6/23/2010 0.88
6/24/2010 0.00
6/25/2010 T
6/26/2010 0.00
6/27/2010 0.00
6/28/2010 0.00
6/29/2010 0.77
6/30/2010 0.00
Day of YearDaily PrcpMultiday Prcp
7/1/2010 0.00
7/2/2010 0.00
7/3/2010 0.00
7/4/2010 0.00
7/5/2010 0.00
7/6/2010 0.00
7/7/2010 0.00
7/8/2010 0.00
7/9/2010 0.00
7/10/2010 0.09
7/11/2010 0.37
7/12/2010 0.00
7/13/2010 0.58
7/14/2010 1.21
7/15/2010 0.10
7/16/2010 0.00
7/17/2010 0.34
7/18/2010 0.00
7/19/2010 0.41
7/20/2010 0.00
7/21/2010 0.00
7/22/2010 0.00
7/23/2010 0.00
7/24/2010 0.00
7/25/2010 0.00
7/26/2010 0.43
7/27/2010 0.00
7/28/2010 0.00
7/29/2010 0.00
7/30/2010 0.11
7/31/2010 0.00
8/1/2010 0.01
8/2/2010 0.01
8/3/2010 0.01
8/4/2010 0.45
8/5/2010 0.17
8/6/2010 0.16
8/7/2010 0.00
8/8/2010 0.00
8/9/2010 0.00
8/10/2010 0.00
8/11/2010 0.00
8/12/2010 1.49
8/13/2010 2.18
8/14/2010 0.01
8/15/2010 T
8/16/2010 0.44
8/17/2010 0.00
8/18/2010 1.67
8/19/2010 0.03
8/20/2010 0.00
8/21/2010 0.00
8/22/2010 T
8/23/2010 0.03
8/24/2010 1.00
8/25/2010 0.00
8/26/2010 0.00
8/27/2010 0.00
8/28/2010 0.00
8/29/2010 0.00
8/30/2010 0.00
8/31/2010 0.00
9/1/2010 0.00
9/2/2010 0.00
9/3/2010 0.00
9/4/2010 0.00
9/5/2010 0.00
9/6/2010 0.00
9/7/2010 0.00
9/8/2010 0.00
9/9/2010 0.00
9/10/2010 0.00
9/11/2010 0.00
9/12/2010 0.64
9/13/2010 0.15
9/14/2010 0.00
9/15/2010 0.00
9/16/2010 0.00
9/17/2010 0.10
9/18/2010 0.00
9/19/2010 0.00
9/20/2010 0.00
9/21/2010 0.00
9/22/2010 0.00
9/23/2010 0.17
9/24/2010 0.00
9/25/2010 0.00
9/26/2010 0.00
9/27/2010 1.08
9/28/2010 0.22
9/29/2010 0.00
9/30/2010 2.14



Observation Date Observation Time Precipitation Snowfall Snowfall SWE Snow Depth Snow SWE Notes
10/1/2009 8:00 AM T 0.0 M 0.0 M Few sprinkles Wednesday were sub-measurable.
10/2/2009 8:00 AM 0.00 0.0 M 0.0 M
10/3/2009 8:00 AM 0.13 0.0 M 0.0 M Rain between 9 and 11 PM Friday evening was mostly light except for a few brief heavier spurts.
10/4/2009 8:00 AM 0.00 0.0 M 0.0 M
10/5/2009 8:00 AM 0.00 0.0 M 0.0 M
10/6/2009 8:00 AM 0.00 0.0 M 0.0 M
10/7/2009 8:00 AM 0.03 0.0 M 0.0 M A bit of rain toward daybreak this morning; clear sky to NW now.
10/8/2009 8:00 AM 0.00 0.0 M 0.0 M
10/9/2009 8:00 AM 0.00 0.0 M 0.0 M
10/10/2009 8:00 AM 0.02 0.0 M 0.0 M Few brief light showers overnight. Few drops at observation.
10/11/2009 8:00 AM 0.01 0.0 M 0.0 M Sprinkles Saturday till midday were followed by clearing.
10/12/2009 8:00 AM 0.00 0.0 M 0.0 M
10/13/2009 8:00 AM 0.00 0.0 M 0.0 M
10/14/2009 8:00 AM 0.00 0.0 M 0.0 M
10/15/2009 7:00 AM 0.10 0.0 M 0.0 M Light rain fell occasionally Wednesday late afternoon and overnight. Moderate rain just began at 7:00 AM
10/16/2009 8:00 AM 0.72 0.0 M 0.0 M Stready rain and drizzle last 25 hours; rain light to briefly moderate.
10/19/2009 8:00 AM 0.02 0.0 M 0.0 M Rain ending completely before noontime.
10/20/2009 8:00 AM 0.00 0.0 M 0.0 M
10/21/2009 8:00 AM 0.00 0.0 M 0.0 M
10/22/2009 8:00 AM 0.00 0.0 M 0.0 M
10/23/2009 8:00 AM 0.00 0.0 M 0.0 M
10/24/2009 8:00 AM 0.03 0.0 M 0.0 M Light rain late Friday evening was preceeded by occasional sprinkles earlier in the PM.
10/25/2009 8:00 AM 1.12 0.0 M 0.0 M Showers, some heavy and with few rumbles of thunder, Saturday mid to late afternoon.
10/26/2009 8:00 AM 0.00 0.0 M 0.0 M
10/27/2009 8:00 AM 0.52 0.0 M 0.0 M Rain after midnight, moderately heavy at times after 3 AM. Still raining.
10/28/2009 8:00 AM 1.28 0.0 M 0.0 M Periods of rain and drizzle last 24 hours, heavy at times overnight.
10/29/2009 8:00 AM T 0.0 M 0.0 M Leftover drizzle ended by 9 AM Wednesday and was followed by temporary partial clearing.
10/30/2009 8:00 AM T 0.0 M 0.0 M Only a bit of very light drizzle came from those gray skies.
10/31/2009 8:00 AM 0.02 0.0 M 0.0 M Drizzle overnight, even at obs time.
11/1/2009 7:00 AM 0.39 0.0 M 0.0 M Periods of drizzle daytime Saturday and couple brief light showers Saturday evening evolved into a steady, mostly light, rain after midnight.
11/2/2009 7:00 AM 0.15 0.0 M 0.0 M Steady light rain Sunday persisted into early afternoon and tapered to occasional sprinkles, which were sub-measurable, thereafter
11/3/2009 7:00 AM 0.00 0.0 M 0.0 M
11/4/2009 7:00 AM 0.00 0.0 M 0.0 M
11/5/2009 7:00 AM 0.00 0.0 M 0.0 M
11/6/2009 7:00 AM 0.01 0.0 M 0.0 M Only sprinkles fell here Thursday afternoon even though I encountered a heavier shower around 4:45 PM while passing through Landover, several miles to the south.
11/7/2009 7:00 AM 0.00 0.0 M 0.0 M
11/8/2009 7:00 AM 0.00 0.0 M 0.0 M
11/9/2009 7:00 AM 0.00 0.0 M 0.0 M
11/10/2009 7:00 AM 0.00 0.0 M 0.0 M
11/11/2009 7:00 AM 0.11 0.0 M 0.0 M Light rain arrived after midnight and continues to the present.
11/12/2009 7:00 AM 1.01 0.0 M 0.0 M Continuous light but wind-driven rain last 24 hours.
11/13/2009 7:00 AM 0.33 0.0 M 0.0 M Steady light rain and drizzle continued yesterday into the evening then became intermittent overnight.
11/14/2009 7:00 AM 0.42 0.0 M 0.0 M Frequent light rain and drizzle last 24 hours with an embedded period of heavier rain at noontime yesterday.
11/15/2009 7:00 AM 0.01 0.0 M 0.0 M A bit more light rain and drizzle yesterday, sub-measurable after 9 AM, eventually gave way to clearing overnight.
11/16/2009 7:00 AM 0.00 0.0 M 0.0 M
11/17/2009 7:00 AM 0.00 0.0 M 0.0 M
11/18/2009 7:00 AM 0.00 0.0 M 0.0 M
11/19/2009 7:00 AM 0.01 0.0 M 0.0 M Occasional sprinkles and drizzle since midnight, also moderate fog this morning.
11/20/2009 7:00 AM 0.75 0.0 M 0.0 M Occasional light rain and drizzle with fog yesterday till 9:30 PM then showers and thundershowers till shortly past midnight, ending completely long before dawn.
11/21/2009 7:00 AM 0.00 0.0 M 0.0 M
11/22/2009 7:00 AM 0.00 0.0 M 0.0 M
11/23/2009 7:00 AM T 0.0 M 0.0 M Very feeble light rain toward obs time...approx one small drop per 100 square feet.
11/24/2009 7:00 AM 1.07 0.0 M 0.0 M Rain and drizzle became steady yesterday by afternoon and was mostly light during the day but continued, frequently moderate, overnight.
11/25/2009 7:00 AM 0.20 0.0 M 0.0 M Nearly continuous drizzle and moderate fog with occasional rain last 24 hours. Light rain at observation.
11/26/2009 7:00 AM 0.08 0.0 M 0.0 M Periods of light rain into early afternoon gave way to partial clearing toward dusk. But radiational fog developed overnight, visibility 1/10 mile.
11/27/2009 7:00 AM 0.14 0.0 M 0.0 M A little drizzle Thanksgiving Day then few showers between midnight and dawn early this morning.
11/28/2009 7:00 AM T 0.0 M 0.0 M Few sprinkles yesterday afternoon.
11/29/2009 7:00 AM 0.00 0.0 M 0.0 M
11/30/2009 7:00 AM 0.00 0.0 M 0.0 M
12/1/2009 7:00 AM 0.22 0.0 M 0.0 M Light rain yesterday from late morning till dusk.
12/2/2009 7:00 AM 0.00 0.0 M 0.0 M
12/3/2009 7:00 AM 0.93 0.0 M 0.0 M Periods of rain, wind driven and briefly heavy at times, PM half of yesterday ended before dawn.
12/4/2009 7:00 AM 0.00 0.0 M 0.0 M
12/5/2009 7:00 AM 0.02 0.0 M 0.0 M Light rain began toward dawn.
12/6/2009 7:00 AM 0.79 2.3 M 1.5 M Yesterday morning rain changed to wet snow by noon which ended early evening. Snow accumulations were greatest on flat elevated surfaces and least on the sidewalks which remained only wet. Streets had an inch of slush.
12/7/2009 7:00 AM 0.00 0.0 M 1.0 M
12/8/2009 7:00 AM T 0.0 M T M There was a very brief shower of fine spray under an overcast sky around 2:40 PM yesterday.
12/9/2009 7:00 AM 1.58 0.1 M 0.0 M Rain, heavy at times, overnight began mixed with sleet.
12/10/2009 7:00 AM 0.01 0.0 M 0.0 M Rain ended shortly after yesterday's observation.
12/11/2009 7:00 AM 0.00 0.0 M 0.0 M
12/12/2009 7:00 AM 0.00 0.0 M 0.0 M
12/13/2009 7:00 AM 0.03 0.0 M 0.0 M Light rain began toward dawn.
12/14/2009 7:00 AM 0.64 0.0 M 0.0 M Rain continued till mid afternoon yesterday. Event total came to 0.67.
12/15/2009 7:00 AM 0.00 0.0 M 0.0 M
12/16/2009 7:00 AM 0.00 0.0 M 0.0 M
12/17/2009 7:00 AM 0.00 0.0 M 0.0 M
12/18/2009 7:00 AM 0.00 0.0 M 0.0 M
12/22/2009 7:00 AM 0.00 0.0 M 15.0 1.96 Please see previous (12/21/2009) Multi-Day Accumulation Report for local snowstorm data.
12/23/2009 7:00 AM 0.00 0.0 M 14.0 M
12/24/2009 7:00 AM 0.00 0.0 M 12.0 1.76
12/25/2009 7:00 AM 0.00 0.0 M 11.0 M
12/26/2009 7:00 AM 1.29 0.0 M 4.0 M Rain was light and intermittent yesterday afternoon then steady and frequently moderate overnight.
12/27/2009 7:00 AM 0.15 0.0 M 0.0 M Rain from previous overnight tapered to drizzle before noon and ended completely before dusk. Event total rainfall 1.44. The rain along with mild and moist winds rapidly melted the snow pack from last Saturday's big snowstorm from which there was little pre-Christmas ablation. Rain combined with snow melt released the equivalent of approx 3.2" of rain within 24 hours onto local grounds, which were previously saturated from much above normal rainfall the last several months, resulting in some minor flooding.
12/28/2009 7:00 AM 0.00 0.0 M 0.0 M
12/29/2009 7:00 AM 0.00 0.0 M 0.0 M
12/30/2009 7:00 AM 0.00 0.0 M 0.0 M
12/31/2009 11:59 PM 0.42 0.6 M 0.5 M I was away over the New Year's weekend but was cognizant of a wintry mix AM of 12/31 and light rain New Year's Eve. I measured 0.41 upon return and am reasonably confident virtually all of it fell during the calendar day of 12/31/2009 but could not confidently distribute it before and after the usual obs time of 1200 UTC (7:00 AM). Therefore, I reported the whole amount, adjusting an additional 0.01 for evaporation, for the 12/31 calendar day to complete the calendar year 2009. Snowfall was estimated based on nearby reports.
1/1/2010 7:00 AM T 0.0 M 0.5 M This report is from only since midnight. See 12/31/2009 report for further explanation.
1/2/2010 7:00 AM 0.00 0.0 M 0.0 M
1/3/2010 7:00 AM 0.00 0.0 M 0.0 M
1/4/2010 7:00 AM 0.00 0.0 M 0.0 M
1/5/2010 7:00 AM T T M T M Snow shower overnight left a dusting, almost 0.1.
1/6/2010 7:00 AM 0.00 0.0 M 0.0 M Any overnight snow flurries were unnoticed.
1/7/2010 7:00 AM 0.00 0.0 M 0.0 M
1/8/2010 7:00 AM 0.10 1.7 M 1.5 M Light, fluffy snow overnight melted to exactly 0.10 inch.
1/9/2010 7:00 AM 0.00 0.0 M 1.0 M
1/10/2010 7:00 AM 0.00 0.0 M 0.5 M
1/11/2010 7:00 AM 0.00 0.0 M T M
1/12/2010 7:00 AM 0.00 0.0 M T M Any snow flurries overnight were not noticed.
1/13/2010 7:00 AM 0.00 0.0 M T M
1/14/2010 7:00 AM 0.00 0.0 M T M
1/15/2010 7:00 AM 0.00 0.0 M 0.0 M
1/16/2010 7:00 AM 0.00 0.0 M 0.0 M
1/17/2010 7:00 AM 0.01 0.0 M 0.0 M Rain is just getting underway.
1/18/2010 7:00 AM 0.68 0.0 M 0.0 M Frequent rain and drizzle yesterday ended before midnight.
1/19/2010 7:00 AM 0.00 0.0 M 0.0 M
1/20/2010 7:00 AM 0.02 T M 0.0 M Light rain toward daybreak was mixed with a trace of wet snow or sleet which slightly whitened a few surfaces. Less than 1/10 of the ground was whitened; thus, zero for total snow/ice on the ground.
1/21/2010 7:00 AM 0.00 0.0 M 0.0 M
1/22/2010 7:00 AM 0.18 T M 0.0 M Occasional rain overnight was mixed with sleet at times. Pavements were partly dry at daybreak.
1/23/2010 7:00 AM T 0.0 M 0.0 M
1/24/2010 7:00 AM 0.00 0.0 M 0.0 M
1/25/2010 7:00 AM 0.57 0.0 M 0.0 M Occasional rain since late yesterday morning was mostly light.
1/26/2010 7:00 AM 0.14 0.0 M 0.0 M Rain showers yesterday morning ended around noon.
1/27/2010 7:00 AM 0.00 0.0 M 0.0 M Sprinkles or flurries at least were close by at times yesterday but were not noticed in the immediate area.
1/28/2010 7:00 AM 0.00 0.0 M 0.0 M
1/29/2010 7:00 AM 0.00 0.0 M 0.0 M
1/30/2010 7:00 AM 0.00 0.0 M 0.0 M
1/31/2010 7:00 AM 0.33 6.0 0.33 M 0.33 I was present to observe the very beginning of this Saturday's snowstorm before having to travel to PA. I returned Monday to find 0.31 in the gauge. Then I core sampled and measured 0.32. I added 0.01 for evaporation. Finally, I estimated to nearest whole inch snowfall before any melting and settling. I am confident all the snow fell within this 24 hour period.
2/1/2010 7:00 AM 0.00 0.0 M M M
2/2/2010 7:00 AM 0.00 0.0 M 3.0 0.32
2/3/2010 7:00 AM 0.39 5.0 M 6.0 0.71 Snow began shortly after dusk and ended long before dawn with 3.6 as of midnight and 1.4 thereafter. Total core sample shows last Saturday's snow is all still there, just very compacted.
2/4/2010 7:00 AM 0.00 0.0 M 3.0 M
2/5/2010 7:00 AM 0.00 0.0 M 1.5 M
2/6/2010 7:00 AM 2.47 24.4 M 25.0 3.10 Updated to add melted value from core of total snow and ice on the ground. Snow began 11 AM yesterday and was wet and light till 4 PM then not as wet and frequently heavy afterwards till present. One to 2 inches may have been "lost" to partial melting during these first five hours. NNE winds were moderate with occasional strong gusts and caused moderate drifting. I thought I heard distant thunder at 4:40 AM. Gauge was over-topped since midnight measurement and thus definitely incomplete. Therefore, I tossed that direct catch and sampled representative core of snow only from this storm. Core of old and new snow will come later.
2/7/2010 7:00 AM 0.63 8.5 M 29.0 M Collosal snowstorm tapered by noontime and ended completely late Saturday afternoon with final measurements amounting to snowfall of 32.9 with rainfall equivalent of 3.10. Season-to-date snowfall of 69.6 in all likelihood is a new record for this area.
2/8/2010 7:00 AM 0.00 0.0 0.00 25.0 3.81
2/9/2010 7:00 AM 0.00 0.0 M 24.0 M
2/10/2010 7:00 AM 0.68 5.4 M 26.0 M Snow began yesterday late afternoon and became mix of snow, sleet, and freezing rain overnight then to all snow toward daybreak with temperature close to 30 during the storm so far. Season-to-date snowfall has reached 75.0 inches with more to come!
2/11/2010 7:00 AM 0.77 11.2 0.77 34.0 M Steady snow and increasing winds continued into early evening for event total of 16.6. Additional snow later at night was not measureable, but blowing and drifting snow continued making measurements challenging. Direct gauge catch was only 0.45 and was tossed out. Season-to-date snowfall has reached an astonishing 86.2 with 55.5 of it in February.
2/12/2010 7:00 AM 0.00 0.0 M 28.0 M
2/13/2010 7:00 AM 0.00 0.0 M 26.0 M
2/14/2010 7:00 AM 0.00 0.0 M 24.0 M
2/15/2010 7:00 AM 0.00 0.0 M 22.0 M
2/16/2010 7:00 AM 0.04 0.2 M 22.0 4.57 A period of wet snow yesterday late afternoon left a coating. Flurries overnight left an additional dusting.
2/17/2010 7:00 AM 0.00 0.0 M 21.5 M Any snow flurries last 24 hours were feeble and not seen by the observer.
2/18/2010 7:00 AM T T M 21.0 M Snow shower late Wednesday evening left a dusting, not quite 0.1, which mostly melted by daybreak.
2/19/2010 7:00 AM 0.00 0.0 M 20.0 M
2/20/2010 7:00 AM 0.00 0.0 M 18.0 M
2/21/2010 7:00 AM 0.00 0.0 M 15.0 M
2/22/2010 7:00 AM 0.00 0.0 M 13.0 3.90
2/23/2010 7:00 AM 0.26 0.0 M 11.0 M Rain and drizzle began yesterday afternoon and continued overnight but very little after midnight.
2/24/2010 7:00 AM 0.00 0.0 M 10.0 M Gradual clearing last 24 hours.
2/25/2010 7:00 AM 0.03 T M 8.0 M Mixed rain and snow fell overnight. Snow melted on impact. Partly sunny at observation.
2/26/2010 7:00 AM T T M 7.5 M Only a slight dusting overnight.
2/27/2010 7:00 AM 0.06 0.9 M 8.5 M Light snow fell overnight and appears to have ended as of observation time. Media reported numerous automobile crashes and spin-outs within a few miles.
2/28/2010 7:00 AM 0.00 0.0 M 7.0 M
3/1/2010 7:00 AM 0.00 0.0 M 5.0 M Lingering snow cover ranges from bare on south-facing terraces and along busy highways to 7 or 8 in mostly shaded areas.
3/2/2010 7:00 AM 0.00 0.0 M 3.0 M
3/3/2010 7:00 AM 0.13 T M 1.0 M Light rain and drizzle from late yesterday afternoon and overnight contained a little slush at times.
3/4/2010 7:00 AM 0.01 0.0 M 1.0 M Occasional drizzle yesterday.
3/5/2010 7:00 AM 0.00 0.0 M T M
3/6/2010 7:00 AM 0.00 0.0 M T M
3/7/2010 7:00 AM 0.00 0.0 M T M
3/8/2010 7:00 AM 0.00 0.0 M T M
3/9/2010 7:00 AM 0.00 0.0 M 0.0 M
3/10/2010 7:00 AM 0.00 0.0 M 0.0 M
3/11/2010 7:00 AM 0.00 0.0 M 0.0 M
3/12/2010 7:00 AM 0.53 0.0 M 0.0 M Period of moderate rain between midnight and daybreak; only drizzle at observation.
3/13/2010 7:00 AM 1.00 0.0 M 0.0 M Frequent rain and drizzle last 24 hours came to 0.46 till midnight then 0.54 from midnight till 7:00 AM amounting to exactly 1.00.
3/14/2010 8:00 AM 1.63 0.0 M 0.0 M Rain, heavy at times, was frequent till dusk (1.30), then after a long break, a period of moderate rain before dawn brought another 0.33. Storm total now 3.16.
3/15/2010 7:00 AM 0.07 0.0 M 0.0 M Only very occasional drizzle fell since 8 AM yesterday till dawn this morning (0.01) ahead of a period of rain from 6:30 this morning till observation (0.06).
3/16/2010 8:00 AM 0.04 0.0 M 0.0 M Light rain continued occasionally late into the evening.
3/17/2010 8:00 AM 0.00 0.0 M 0.0 M
3/18/2010 8:00 AM 0.00 0.0 M 0.0 M
3/19/2010 8:00 AM 0.00 0.0 M 0.0 M
3/20/2010 8:00 AM 0.00 0.0 M 0.0 M
3/21/2010 8:00 AM 0.00 0.0 M 0.0 M
3/22/2010 8:00 AM 0.03 0.0 M 0.0 M A couple of very brief showers around daybreak.
3/23/2010 8:00 AM 0.43 0.0 M 0.0 M Showers with a little thunder at times till mid afternoon but mostly before noontime.
3/24/2010 8:00 AM T 0.0 M 0.0 M Period of sprinkles after dusk last evening.
3/25/2010 8:00 AM 0.00 0.0 M 0.0 M
3/26/2010 8:00 AM 0.23 0.0 M 0.0 M Periods of light rain overnight.
3/27/2010 8:00 AM 0.07 0.0 M 0.0 M Light rain from previous overnight ended before noontime.
3/28/2010 8:00 AM 0.00 0.0 M 0.0 M
3/29/2010 8:00 AM 0.73 0.0 M 0.0 M Rain since dusk last evening was moderately heavy for an hour between 8:30 and 9:30 PM and mainly light other times.
3/30/2010 8:00 AM 0.15 0.0 M 0.0 M Periods of light rain and drizzle were interspersed with partly clear skies at times including at 8 AM observation which saw partly clear sky to the west despite light rain from overhead.
3/31/2010 8:00 AM 0.13 0.0 M 0.0 M One or two hundredths fell till an hour or so after yesterday's observation. The remainder came from few light to briefly moderate showers between 5 PM and midnight.
4/1/2010 8:00 AM 0.00 0.0 M 0.0 M
4/2/2010 8:00 AM 0.00 0.0 M 0.0 M
4/3/2010 8:00 AM 0.00 0.0 M 0.0 M
4/4/2010 8:00 AM 0.00 0.0 M 0.0 M
4/5/2010 8:00 AM 0.00 0.0 M 0.0 M
4/6/2010 8:00 AM T 0.0 M 0.0 M Spritz at daybreak.
4/7/2010 8:00 AM 0.00 0.0 M 0.0 M
4/8/2010 8:00 AM 0.00 0.0 M 0.0 M
4/9/2010 8:00 AM 0.71 0.0 M 0.0 M Frequent light to moderate rain with strong gusts and two rumbles of thunder near the onset dusk till 1 AM tapered and ended before dawn.
4/10/2010 8:00 AM 0.00 0.0 M 0.0 M
4/11/2010 8:00 AM 0.00 0.0 M 0.0 M
4/12/2010 8:00 AM 0.00 0.0 M 0.0 M
4/13/2010 8:00 AM 0.00 0.0 M 0.0 M
4/14/2010 8:00 AM 0.15 0.0 M 0.0 M Light rain fell yesterday afternoon and ended shortly before dusk.
4/15/2010 8:00 AM 0.00 0.0 M 0.0 M
4/16/2010 8:00 AM 0.00 0.0 M 0.0 M
4/17/2010 8:00 AM T 0.0 M 0.0 M Occasional sprinkles yesterday late afternoon and evening were sub-measurable. However west winds were fresh and may have gusted to minimal gale force at times.
4/18/2010 8:00 AM 0.00 0.0 M 0.0 M
4/19/2010 8:00 AM 0.00 0.0 M 0.0 M
4/20/2010 8:00 AM 0.00 0.0 M 0.0 M
4/21/2010 8:00 AM 0.00 0.0 M 0.0 M
4/22/2010 8:00 AM 0.56 0.0 M 0.0 M Rain yesterday from midday till near dusk was moderately heavy for a while during late afternoon. Dense fog overnight till observation reduced visibility to 0.1 mile.
4/23/2010 8:00 AM 0.00 0.0 M 0.0 M
4/24/2010 8:00 AM 0.00 0.0 M 0.0 M
4/25/2010 8:00 AM 0.14 0.0 M 0.0 M Periods of light rain fell mostly between midnight and dawn.
4/26/2010 8:00 AM 0.66 0.0 M 0.0 M Frequent thunderstorms between 9 PM and midnight last evening brought a few separated brief downpours and a few minutes of strong gusts which blew opposite of the prevailing wind direction around 9:40. Then occasional light rain fell since midnight.
4/27/2010 8:00 AM 0.03 0.0 M 0.0 M Very intermittent light rain yesterday.
4/28/2010 8:00 AM 0.00 0.0 M 0.0 M
4/29/2010 8:00 AM 0.00 0.0 M 0.0 M
4/30/2010 8:00 AM 0.00 0.0 M 0.0 M
5/1/2010 8:00 AM 0.00 0.0 M 0.0 M
5/2/2010 8:00 AM 0.00 0.0 M 0.0 M Possible trace overnight cannot be confirmed as of now.
5/3/2010 8:00 AM 0.33 0.0 M 0.0 M Rain began toward dawn and has been mostly light but was accompanied by strong gusts at times.
5/4/2010 8:00 AM 0.02 0.0 M 0.0 M Morning rain ended by 9 AM yesterday, then sprinkles toward dusk were sub-measurable.
5/5/2010 8:00 AM 0.00 0.0 M 0.0 M
5/6/2010 8:00 AM 0.00 0.0 M 0.0 M
5/7/2010 8:00 AM 0.00 0.0 M 0.0 M
5/8/2010 8:00 AM 0.00 0.0 M 0.0 M
5/9/2010 8:00 AM 0.00 0.0 M 0.0 M
5/10/2010 8:00 AM 0.00 0.0 M 0.0 M
5/11/2010 8:00 AM 0.00 0.0 M 0.0 M
5/12/2010 8:00 AM 0.22 0.0 M 0.0 M Periods of rain occurred between midday and dusk yesterday. Any rain overnight was sub-measurable.
5/13/2010 8:00 AM 0.52 0.0 M 0.0 M Showers and thundershowers late afternoon brought exactly a half inch, approx 0.4 of which fell within 15 minutes, then overnight drizzle brought an additional 0.02.
5/14/2010 8:00 AM 0.01 0.0 M 0.0 M Some drizzle overnight.
5/15/2010 8:00 AM T 0.0 M 0.0 M Although several thunderstorm cells were close by from 6:30 PM till dusk yesterday, none hit directly. One that passed to the south brought gusty winds and some spray around 6:50 PM.
5/16/2010 8:00 AM 0.00 0.0 M 0.0 M
5/17/2010 8:00 AM 0.02 0.0 M 0.0 M Light rain began at about daybreak.
5/18/2010 8:00 AM 0.37 0.0 M 0.0 M Periods of drizzle and light rain last 24 hours.
5/19/2010 8:00 AM 0.21 0.0 M 0.0 M Period of rain which began shortly before yesterday's observation ended toward noontime but was followed by occasional sprays of drizzle into the evening.
5/20/2010 8:00 AM T 0.0 M 0.0 M Few sprinkles yesterday early evening.
5/21/2010 8:00 AM 0.00 0.0 M 0.0 M
5/22/2010 8:00 AM 0.00 0.0 M 0.0 M
5/23/2010 8:00 AM 0.45 0.0 M 0.0 M Period of light rain (0.02) near dusk last evening was followed few hours later by near-dawn mostly light to moderate rain with a few brief heavy spurts and only two rumbles of thunder, but one was a close loud boom at 4:37:50 AM.
5/24/2010 8:00 AM 0.06 0.0 M 0.0 M Only a few brief sprinkles occurred yesterday after 8 AM (0.01), then steady drizzle developed after midnight and continues unto this observation (0.05).
5/25/2010 8:00 AM 0.01 0.0 M 0.0 M Yesterday's drizzle ended before noon.
5/26/2010 8:00 AM 0.00 0.0 M 0.0 M
5/27/2010 8:00 AM 0.00 0.0 M 0.0 M
5/28/2010 8:00 AM 0.28 0.0 M 0.0 M Thunderstorms were in vicinity from yesterday late afternoon till predawn but none hit here directly except for a 10-minute moderate downpour shortly before midnight.
5/29/2010 8:00 AM 0.09 0.0 M 0.0 M Few showers overnight, mostly toward dawn.
5/30/2010 8:00 AM 0.00 0.0 M 0.0 M
5/31/2010 8:00 AM 0.00 0.0 M 0.0 M
6/1/2010 8:00 AM 0.00 0.0 M 0.0 M
6/2/2010 8:00 AM 0.00 0.0 M 0.0 M The gauge was dry. I was not home to see any trace of rain when heavy downpours were occurring not far away.
6/3/2010 8:00 AM 0.00 0.0 M 0.0 M
6/4/2010 8:00 AM 0.25 0.0 M 0.0 M A thunderstorm complex moved across the area early last evening. A brief heavy shower around 5 PM preceded the first thunder by several minutes as a new cell was forming directly overhead. Then the main thunderstorm to nearby N sideswiped the neighborhood with only light rain from around 5:45 till after 6 PM. According to data from the Savage mesonet (CW0415) 3 miles to the NW, the initial heavy shower missed that location before the main storm brought nearly a half inch between 5:30 and 6:00.
6/5/2010 8:00 AM T 0.0 M 0.0 M
6/6/2010 8:00 AM 0.00 0.0 M 0.0 M
6/7/2010 8:00 AM 0.20 0.0 M 0.0 M Brief thunderstorm occurred early yesterday afternoon.
6/8/2010 8:00 AM 0.00 0.0 M 0.0 M
6/9/2010 8:00 AM T 0.0 M 0.0 M Some drizzle last half hour; otherwise, dry last 24 hours.
6/10/2010 8:00 AM 0.13 0.0 M 0.0 M Occasional light rain yesterday came mostly during midday brought 0.11, and a brief predawn shower around 4 AM brought an additional 0.02.
6/11/2010 8:00 AM 0.00 0.0 M 0.0 M
6/12/2010 8:00 AM 0.00 0.0 M 0.0 M
6/13/2010 8:00 AM T 0.0 M 0.0 M Sprinkle during dusk last rvrning.
6/14/2010 8:00 AM 0.00 0.0 M 0.0 M
6/15/2010 8:00 AM 0.00 0.0 M 0.0 M A shower to the west toward dusk moved SE and missed this site to the SW.
6/16/2010 8:00 AM 0.06 0.0 M 0.0 M Occasional sprinkles yesterday afternoon brought 0.01. Very briefly heavy shower near dawn brought 0.05.
6/17/2010 8:00 AM 0.12 0.0 M 0.0 M A moderate shower occurred during the forenoon yesterday as a heavy t-storm passed by a few miles to the south.
6/18/2010 8:00 AM 0.00 0.0 M 0.0 M
6/19/2010 8:00 AM 0.00 0.0 M 0.0 M
6/20/2010 8:00 AM 0.00 0.0 M 0.0 M
6/21/2010 8:00 AM 0.00 0.0 M 0.0 M
6/22/2010 8:00 AM 0.00 0.0 M 0.0 M
6/23/2010 8:00 AM 0.88 0.0 M 0.0 M I returned from vacation on 27 June and was told by a neighbor that the only measurable rain during my absence since 20 June fell from a brief but intense T-storm around 8:00 PM EDT of Tuesday 22 June. Therefore, I placed the entire gauge accumulation of 0.83 plus an estimated 0.05 for evaporation in this 24-hour period. This sole measurable rainfall made it possible to make up the itemized daily amounts, thus avoiding the reporting a multi-day accumulation.
6/24/2010 8:00 AM 0.00 0.0 M 0.0 M
6/25/2010 8:00 AM T 0.0 M 0.0 M
6/26/2010 8:00 AM 0.00 0.0 M 0.0 M
6/27/2010 8:00 AM 0.00 0.0 M 0.0 M
6/28/2010 8:00 AM 0.00 0.0 M 0.0 M
6/29/2010 8:00 AM 0.77 0.0 M 0.0 M Early afternoon thunderstorm brought 3/4 hour of heavy rain but which was never really torrential. However, winds several minutes prior to measurable rain and the first thunder reached light damaging strength (gusts est. 45 mph) then subsided to moderate or less during the rain. There were no close lightning strikes but frequent soft thunder. Rainfall reached 0.72 from this storm, then an additional 0.05 fell overnight.
6/30/2010 8:00 AM 0.00 0.0 M 0.0 M
7/1/2010 8:00 AM 0.00 0.0 M 0.0 M
7/2/2010 8:00 AM 0.00 0.0 M 0.0 M
7/3/2010 8:00 AM 0.00 0.0 M 0.0 M
7/4/2010 8:00 AM 0.00 0.0 M 0.0 M
7/5/2010 8:00 AM 0.00 0.0 M 0.0 M
7/6/2010 8:00 AM 0.00 0.0 M 0.0 M
7/7/2010 8:00 AM 0.00 0.0 M 0.0 M
7/8/2010 8:00 AM 0.00 0.0 M 0.0 M
7/9/2010 8:00 AM 0.00 0.0 M 0.0 M
7/10/2010 8:00 AM 0.09 0.0 M 0.0 M Mostly light to briefly moderate showers since dawn.
7/11/2010 8:00 AM 0.37 0.0 M 0.0 M Light to moderate showers till noontime Saturday tapered to few afternoon sprinkles.
7/12/2010 8:00 AM 0.00 0.0 M 0.0 M
7/13/2010 8:00 AM 0.58 0.0 M 0.0 M Thunderstorms, showers, and lulls occurred from 2 PM yesterday till predawn. Brief downpours occurred around 2:35 PM and 10:50 PM and accounted for the great majority of the total.
7/14/2010 8:00 AM 1.21 0.0 M 0.0 M Few showers and thunderstorms overnight with some downpours brought much-needed rain.
7/15/2010 8:00 AM 0.10 0.0 M 0.0 M Light showers persisted to midday yesterday.
7/16/2010 8:00 AM 0.00 0.0 M 0.0 M
7/17/2010 8:00 AM 0.34 0.0 M 0.0 M VCTS midnight till near dawn brought two brief downpours within a quarter hour as a small cell lingered over the immediate neighborhood and after the initial main cell brought only some spray.
7/18/2010 8:00 AM 0.00 0.0 M 0.0 M
7/19/2010 8:00 AM 0.41 0.0 M 0.0 M A thunderstorm cluster moved through late last evening to slightly past midnight with brief gusty winds and a brief downpour followed by light rain.
7/20/2010 8:00 AM 0.00 0.0 M 0.0 M
7/21/2010 8:00 AM 0.00 0.0 M 0.0 M
7/22/2010 8:00 AM 0.00 0.0 M 0.0 M
7/23/2010 8:00 AM 0.00 0.0 M 0.0 M
7/24/2010 8:00 AM 0.00 0.0 M 0.0 M
7/25/2010 8:00 AM 0.00 0.0 M 0.0 M
7/26/2010 8:00 AM 0.43 0.0 M 0.0 M Severe T-storm ended strong heat wave yesterday afternoon with minor-damaging winds just ahead of and during brief downpour.
7/27/2010 8:00 AM 0.00 0.0 M 0.0 M
7/28/2010 8:00 AM 0.00 0.0 M 0.0 M
7/29/2010 8:00 AM 0.00 0.0 M 0.0 M
7/30/2010 8:00 AM 0.11 0.0 M 0.0 M Two separate thunderstorms moving NW to SE between midday and mid afternoon yesterday brought little rain here but heavier rain to both right and left.
7/31/2010 8:00 AM 0.00 0.0 M 0.0 M
8/1/2010 8:00 AM 0.01 0.0 M 0.0 M A little rain overnight.
8/2/2010 8:00 AM 0.01 0.0 M 0.0 M A bit of rain around dawn.
8/3/2010 8:00 AM 0.01 0.0 M 0.0 M A bit of rain during the forenoon period yesterday.
8/4/2010 8:00 AM 0.45 0.0 M 0.0 M T-storm during the 4 AM hour brought moderate to occasionally heavy rain then tapered to light rain the following hour.
8/5/2010 8:00 AM 0.17 0.0 M 0.0 M Fast-moving and weakening squall line brought brief downpour and some thunder.
8/6/2010 8:00 AM 0.16 0.0 M 0.0 M Weak thunderstorm passed through this area around 4 PM; however, storms were heavy or very severe over DC and southward.
8/7/2010 8:00 AM 0.00 0.0 M 0.0 M
8/8/2010 8:00 AM 0.00 0.0 M 0.0 M
8/9/2010 8:00 AM 0.00 0.0 M 0.0 M
8/10/2010 8:00 AM 0.00 0.0 M 0.0 M
8/11/2010 8:00 AM 0.00 0.0 M 0.0 M
8/12/2010 8:00 AM 1.49 0.0 M 0.0 M Brief heavy shower at dawn (~6:00 AM) was followed by a very heavy thunderstorm between 7 AM and 8 AM. Light rain with distant thunder was falling at 8:00 AM.
8/13/2010 8:00 AM 2.18 0.0 M 0.0 M After getting very little from the late afternoon T-storm event, what appeared to be "bay effect" rain with no thunder developed after dusk and continued to near dawn with frequent downpours between 10:30 PM and 1:30 AM to reach an event total of 3.67 in slightly more then 24 hours since dawn yesterday. Very little, if any, rain fell since 6 AM this morning.
8/14/2010 8:00 AM 0.01 0.0 M 0.0 M
8/15/2010 8:00 AM T 0.0 M 0.0 M
8/16/2010 8:00 AM 0.44 0.0 M 0.0 M Light to moderate rain daybreak to midday.
8/17/2010 8:00 AM 0.00 0.0 M 0.0 M
8/18/2010 12:00 PM 1.67 0.0 M 0.0 M Rain, heavy at times, began predawn and tapered toward noon and was accompanied by thunder at the onset. Having very early work hours today, I opted to report a near storm total later in the day rather than a small amount at 5 AM. It appears the heaviest rain fell around my usual observation time of 8 AM when I was unavailable to measure. My next report (8/19) will be at noon also to avoid an unrepresentative small amount (0.03) from being map-plotted. Then I shall return to 8 AM obs for 8/20 with no significant rain expected during that period.
8/19/2010 12:00 PM 0.03 0.0 M 0.0 M There was only occasional leftover light rain yesterday afternoon and evening after the morning deluges. Storm total was 1.70.
8/20/2010 8:00 AM 0.00 0.0 M 0.0 M
8/21/2010 8:00 AM 0.00 0.0 M 0.0 M
8/22/2010 8:00 AM T 0.0 M 0.0 M Sprinkles since daybreak.
8/23/2010 8:00 AM 0.03 0.0 M 0.0 M Broken line of thundershowers moved across early Sunday afternoon. Showers were briefly heavy to the nearby N and E.
8/24/2010 8:00 AM 1.00 0.0 M 0.0 M "Bay effect" showers developed at the onset of NE winds along the west shore of the Chesapeake Bay toward sunset last evening and moved slowly westward from dusk till after midnight. An embedded intense downpour found this spot for several minutes around 9:45 PM and accounted for the great majority of the exactly 1:00 that fell. This scenario looked similar to the event of 13 August.
8/25/2010 8:00 AM 0.00 0.0 M 0.0 M Any sprinkle was not seen.
8/26/2010 8:00 AM 0.00 0.0 M 0.0 M
8/27/2010 8:00 AM 0.00 0.0 M 0.0 M
8/28/2010 8:00 AM 0.00 0.0 M 0.0 M
8/29/2010 8:00 AM 0.00 0.0 M 0.0 M
8/30/2010 8:00 AM 0.00 0.0 M 0.0 M
8/31/2010 8:00 AM 0.00 0.0 M 0.0 M
9/1/2010 8:00 AM 0.00 0.0 M 0.0 M
9/2/2010 8:00 AM 0.00 0.0 M 0.0 M
9/3/2010 8:00 AM 0.00 0.0 M 0.0 M
9/4/2010 8:00 AM 0.00 0.0 M 0.0 M
9/5/2010 8:00 AM 0.00 0.0 M 0.0 M
9/6/2010 8:00 AM 0.00 0.0 M 0.0 M
9/7/2010 8:00 AM 0.00 0.0 M 0.0 M
9/8/2010 8:00 AM 0.00 0.0 M 0.0 M
9/9/2010 8:00 AM 0.00 0.0 M 0.0 M
9/10/2010 8:00 AM 0.00 0.0 M 0.0 M
9/11/2010 8:00 AM 0.00 0.0 M 0.0 M
9/12/2010 8:00 AM 0.64 0.0 M 0.0 M Rain, some heavy, began before dawn.
9/13/2010 8:00 AM 0.15 0.0 M 0.0 M Periods of light rain and drizzle lingered into early afternoon.
9/14/2010 8:00 AM 0.00 0.0 M 0.0 M
9/15/2010 8:00 AM 0.00 0.0 M 0.0 M
9/16/2010 8:00 AM 0.00 0.0 M 0.0 M
9/17/2010 8:00 AM 0.10 0.0 M 0.0 M Light rain fell at times yesterday from mid afternoon till shortly after 1 AM early this morning.
9/18/2010 8:00 AM 0.00 0.0 M 0.0 M
9/19/2010 8:00 AM 0.00 0.0 M 0.0 M
9/20/2010 8:00 AM 0.00 0.0 M 0.0 M
9/21/2010 8:00 AM 0.00 0.0 M 0.0 M
9/22/2010 8:00 AM 0.00 0.0 M 0.0 M
9/23/2010 8:00 AM 0.17 0.0 M 0.0 M Gusty thunderstorm began at dusk with brief heavy rain and frequent vivid lightning. Frequent lightning continued for another hour as the storm moved to the SE.
9/24/2010 8:00 AM 0.00 0.0 M 0.0 M
9/25/2010 8:00 AM 0.00 0.0 M 0.0 M
9/26/2010 8:00 AM 0.00 0.0 M 0.0 M
9/27/2010 8:00 AM 1.08 0.0 M 0.0 M Periods of rain began after 8 AM yesterday and became more frequent and heavy at times after midnight.
9/28/2010 8:00 AM 0.22 0.0 M 0.0 M Few periods of rain last 24 hours ranged from moslty very light to two 1- to 2-minute downpours.
9/29/2010 8:00 AM 0.00 0.0 M 0.0 M Most recent rainy period ended shortly prior to yessterday's observation.
9/30/2010 8:00 AM 2.14 0.0 M 0.0 M Occasional very light rain during the day and evening yesterday became steady and heavy at times beginning about midnight till daybreak. Steady light rain has been falling since daybreak. Flooding magnitude is unknown.



Start Date End Date & Time Duration in Days Precipitation Snow Depth Snow Depth SWE Notes
10/17/2009 10/18/2009 8:00 AM 2 2.44 0.0 M I was traveling over the weekend but knew rain fell heavily at times during most of the period of absence.
12/19/2009 12/21/2009 6:00 PM 3 1.96 16.0 1.96 I was out of state during the big snowstorm. The direct gauge catch was only 1.01 as the gauge was almost certainly over-topped during the snowstorm. Therefore, I reported the meltdown from a representative core sample. I estimated the storm total snowfall before any settling at 21" based on nearby reports. Reports from North Laurel (MD-HW-21) were especially helpful in rendering a reasonably confident estimate.



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