Station Overview Station Location
Station Number MD-MG-55 Latitude 39.097415
Station Name Rossmoor 1.3 ESE Longitude -77.04873
County Montgomery Elevation (ft) 433



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 3.51 5.28 31 5.27 29 0.01 2 1 14 3 0.0 0 0
Nov 09 3.54 4.80 30 4.80 30 0.00 0 0 14 2 0.0 0 0
Dec 09 3.24 7.15 31 7.15 31 0.00 0 0 11 2 24.0 4 10
Jan 10 2.99 1.99 31 1.99 31 0.00 0 0 8 2 7.7 2 7
Feb 10 2.85 4.86 28 4.86 28 0.00 0 0 9 2 42.3 8 27
March 10 3.82 3.45 31 3.45 31 0.00 0 0 13 3 0.0 0 7
April 10 3.38 2.11 30 1.58 27 0.53 3 1 6 1 0.0 0 0
May 10 4.24 3.34 31 2.35 24 0.99 7 1 8 3 0.0 0 0
June 10 3.95 2.04 30 1.91 28 0.13 2 1 8 4 0.0 0 0
July 10 4.01 4.49 31 4.49 31 0.00 0 0 9 1 0.0 0 0
Aug 10 3.21 7.67 31 7.67 29 0.00 2 1 12 4 0.0 0 0
Sept 10 4.05 3.27 30 3.27 30 0.00 0 0 8 0 0.0 0 0
Water Year Totals: 42.79" 50.45" 365 days 48.79" 349 1.66" 16 days 5 120 days 27 days 74.0" 14 days 51 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 0.03
10/4/2009 0.00
10/5/2009 0.00
10/6/2009 0.00
10/7/2009 0.02
10/8/2009 0.00
10/9/2009 T
10/10/2009 0.01
10/11/2009 **
10/12/2009 0.01
10/13/2009 0.00
10/14/2009 0.00
10/15/2009 0.13
10/16/2009 0.82
10/17/2009 0.70
10/18/2009 1.37
10/19/2009 0.01
10/20/2009 0.00
10/21/2009 0.00
10/22/2009 0.00
10/23/2009 0.00
10/24/2009 0.02
10/25/2009 0.41
10/26/2009 0.00
10/27/2009 0.54
10/28/2009 1.19
10/29/2009 0.01
10/30/2009 T
10/31/2009 0.01
11/1/2009 0.42
11/2/2009 0.17
11/3/2009 0.00
11/4/2009 0.00
11/5/2009 0.00
11/6/2009 0.05
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 1.09
11/13/2009 0.22
11/14/2009 0.36
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 1.04
11/21/2009 0.00
11/22/2009 0.00
11/23/2009 T
11/24/2009 0.74
11/25/2009 0.14
11/26/2009 0.13
11/27/2009 0.31
11/28/2009 T
11/29/2009 0.00
11/30/2009 0.00
12/1/2009 0.28
12/2/2009 0.00
12/3/2009 0.75
12/4/2009 0.00
12/5/2009 T
12/6/2009 0.65
12/7/2009 0.00
12/8/2009 0.00
12/9/2009 1.64
12/10/2009 T
12/11/2009 0.00
12/12/2009 0.00
12/13/2009 0.03
12/14/2009 0.73
12/15/2009 0.00
12/16/2009 0.00
12/17/2009 0.00
12/18/2009 0.00
12/19/2009 0.51
12/20/2009 1.09
12/21/2009 0.00
12/22/2009 0.00
12/23/2009 0.00
12/24/2009 0.00
12/25/2009 0.00
12/26/2009 1.17
12/27/2009 0.08
12/28/2009 0.00
12/29/2009 0.00
12/30/2009 0.00
12/31/2009 0.22
Day of YearDaily PrcpMultiday Prcp
1/1/2010 0.20
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 0.09
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 T
1/18/2010 0.64
1/19/2010 0.00
1/20/2010 0.01
1/21/2010 0.00
1/22/2010 0.13
1/23/2010 0.00
1/24/2010 0.00
1/25/2010 0.51
1/26/2010 0.08
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 0.32
2/4/2010 T
2/5/2010 0.00
2/6/2010 2.25
2/7/2010 0.72
2/8/2010 0.00
2/9/2010 0.00
2/10/2010 0.64
2/11/2010 0.69
2/12/2010 0.00
2/13/2010 0.00
2/14/2010 0.00
2/15/2010 0.00
2/16/2010 0.03
2/17/2010 0.00
2/18/2010 0.00
2/19/2010 0.00
2/20/2010 0.00
2/21/2010 0.00
2/22/2010 0.00
2/23/2010 0.17
2/24/2010 0.00
2/25/2010 0.02
2/26/2010 T
2/27/2010 0.02
2/28/2010 0.00
3/1/2010 T
3/2/2010 0.00
3/3/2010 0.07
3/4/2010 T
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 0.51
3/13/2010 0.45
3/14/2010 0.89
3/15/2010 0.04
3/16/2010 0.07
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 0.02
3/23/2010 0.36
3/24/2010 T
3/25/2010 0.00
3/26/2010 0.29
3/27/2010 0.10
3/28/2010 0.00
3/29/2010 0.61
3/30/2010 0.03
3/31/2010 0.01
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 **
4/10/2010 **
4/11/2010 0.53
4/12/2010 0.00
4/13/2010 0.00
4/14/2010 0.12
4/15/2010 0.00
4/16/2010 0.00
4/17/2010 0.02
4/18/2010 0.00
4/19/2010 0.00
4/20/2010 0.00
4/21/2010 0.00
4/22/2010 0.24
4/23/2010 0.00
4/24/2010 0.00
4/25/2010 0.11
4/26/2010 0.94
4/27/2010 0.15
4/28/2010 0.00
4/29/2010 0.00
4/30/2010 0.00
5/1/2010 0.00
5/2/2010 T
5/3/2010 0.27
5/4/2010 0.03
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 0.16
5/13/2010 **
5/14/2010 **
5/15/2010 0.99
5/16/2010 0.00
5/17/2010 0.02
5/18/2010 0.42
5/19/2010 0.02
5/20/2010 T
5/21/2010 0.00
5/22/2010 0.00
5/23/2010 1.27
5/24/2010 0.16
5/25/2010 T
5/26/2010 0.00
5/27/2010 0.00
5/28/2010 **
5/29/2010 **
5/30/2010 **
5/31/2010 **
6/1/2010 **
6/2/2010 0.13
6/3/2010 0.00
6/4/2010 0.04
6/5/2010 T
6/6/2010 0.00
6/7/2010 0.21
6/8/2010 0.00
6/9/2010 0.00
6/10/2010 0.16
6/11/2010 0.00
6/12/2010 0.00
6/13/2010 T
6/14/2010 0.01
6/15/2010 0.24
6/16/2010 T
6/17/2010 0.15
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 0.22
6/24/2010 0.00
6/25/2010 0.00
6/26/2010 0.00
6/27/2010 0.00
6/28/2010 T
6/29/2010 0.88
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 0.03
7/11/2010 0.55
7/12/2010 0.00
7/13/2010 0.63
7/14/2010 1.30
7/15/2010 0.17
7/16/2010 0.00
7/17/2010 0.01
7/18/2010 0.00
7/19/2010 0.43
7/20/2010 T
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 0.90
7/27/2010 0.00
7/28/2010 0.00
7/29/2010 0.00
7/30/2010 0.47
7/31/2010 0.00
8/1/2010 0.02
8/2/2010 T
8/3/2010 T
8/4/2010 1.09
8/5/2010 0.00
8/6/2010 0.04
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 T
8/13/2010 3.28
8/14/2010 0.03
8/15/2010 T
8/16/2010 0.36
8/17/2010 0.00
8/18/2010 1.71
8/19/2010 0.92
8/20/2010 0.00
8/21/2010 0.00
8/22/2010 0.01
8/23/2010 0.09
8/24/2010 0.10
8/25/2010 0.02
8/26/2010 0.00
8/27/2010 **
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 0.66
9/13/2010 0.08
9/14/2010 0.00
9/15/2010 0.00
9/16/2010 0.00
9/17/2010 0.21
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 0.01
9/24/2010 0.00
9/25/2010 0.00
9/26/2010 0.00
9/27/2010 0.30
9/28/2010 0.37
9/29/2010 0.02
9/30/2010 1.62



Observation Date Observation Time Precipitation Snowfall Snowfall SWE Snow Depth Snow SWE Notes
10/1/2009 7:00 AM T 0.0 0.00 M M
10/2/2009 7:00 AM 0.00 0.0 M M M
10/3/2009 7:00 AM 0.03 0.0 M 0.0 M
10/4/2009 7:00 AM 0.00 0.0 M M M
10/5/2009 7:00 AM 0.00 0.0 M M M
10/6/2009 7:00 AM 0.00 0.0 0.00 M M
10/7/2009 7:00 AM 0.02 0.0 0.00 M M
10/8/2009 7:00 AM 0.00 0.0 0.00 M M
10/9/2009 7:00 AM T 0.0 0.00 0.0 M
10/10/2009 7:00 AM 0.01 0.0 0.00 M M
10/13/2009 7:00 AM 0.00 0.0 0.00 M M
10/14/2009 7:00 AM 0.00 0.0 0.00 M M
10/15/2009 7:00 AM 0.13 0.0 0.00 M M
10/16/2009 7:00 AM 0.82 0.0 0.00 M M
10/17/2009 7:00 AM 0.70 0.0 0.00 M M
10/18/2009 7:00 AM 1.37 0.0 0.00 M M
10/19/2009 7:00 AM 0.01 0.0 0.00 M M
10/20/2009 7:00 AM 0.00 0.0 0.00 M M
10/21/2009 7:00 AM 0.00 0.0 0.00 M M
10/22/2009 7:00 AM 0.00 0.0 0.00 M M
10/23/2009 7:00 AM 0.00 0.0 0.00 M M
10/24/2009 7:00 AM 0.02 0.0 0.00 M M
10/25/2009 7:00 AM 0.41 0.0 0.00 M M
10/26/2009 7:00 AM 0.00 0.0 0.00 M M
10/27/2009 7:00 AM 0.54 0.0 0.00 M M
10/28/2009 7:00 AM 1.19 0.0 0.00 M M
10/29/2009 7:00 AM 0.01 0.0 M M M
10/30/2009 7:00 AM T 0.0 M M M
10/31/2009 7:00 AM 0.01 0.0 0.00 M M
11/1/2009 7:00 AM 0.42 0.0 0.00 M M
11/2/2009 7:00 AM 0.17 0.0 0.00 M M
11/3/2009 7:00 AM 0.00 0.0 0.00 M M
11/4/2009 7:00 AM 0.00 0.0 0.00 M M
11/5/2009 7:00 AM 0.00 0.0 0.00 M M
11/6/2009 7:00 AM 0.05 0.0 0.00 M M
11/7/2009 7:00 AM 0.00 0.0 0.00 M M hard freeze, heavy condensation melted in the gauge
11/8/2009 7:00 AM 0.00 0.0 0.00 M M
11/9/2009 7:00 AM 0.00 0.0 0.00 M M
11/10/2009 7:00 AM 0.00 0.0 0.00 M M
11/11/2009 7:00 AM 0.11 0.0 0.00 M M Raining at the time of observation.
11/12/2009 7:00 AM 1.09 0.0 0.00 M M Rain continuous over the past 24 hours.
11/13/2009 7:00 AM 0.22 0.0 0.00 M M
11/14/2009 7:00 AM 0.36 0.0 0.00 M M Misting at 7 a.m.
11/15/2009 7:00 AM 0.01 0.0 0.00 M M
11/16/2009 7:00 AM 0.00 0.0 0.00 M M
11/17/2009 7:00 AM 0.00 0.0 0.00 M M
11/18/2009 7:00 AM 0.00 0.0 0.00 M M
11/19/2009 7:00 AM 0.01 0.0 0.00 M M
11/20/2009 7:00 AM 1.04 0.0 M M M
11/21/2009 7:00 AM 0.00 0.0 0.00 M M
11/22/2009 7:00 AM 0.00 0.0 0.00 M M
11/23/2009 7:00 AM T 0.0 0.00 M M
11/24/2009 7:00 AM 0.74 0.0 0.00 M M misting at time of observation
11/25/2009 7:00 AM 0.14 0.0 0.00 M M Light mist at time of observation
11/26/2009 7:00 AM 0.13 0.0 M M M
11/27/2009 7:00 AM 0.31 0.0 0.00 M M
11/28/2009 7:00 AM T 0.0 0.00 M M
11/29/2009 7:00 AM 0.00 0.0 0.00 M M
11/30/2009 7:00 AM 0.00 0.0 0.00 M M
12/1/2009 7:00 AM 0.28 0.0 0.00 M M
12/2/2009 7:00 AM 0.00 0.0 0.00 M M
12/3/2009 7:00 AM 0.75 0.0 0.00 M M
12/4/2009 7:00 AM 0.00 0.0 0.00 M M
12/5/2009 7:00 AM T 0.0 0.00 M M raining at 7 a.m.
12/6/2009 7:00 AM 0.65 3.2 M 2.5 M Reading is melted snow. New snow accumulation measured at end of snowfall, approx 7 p.m. 12/5/09 Depth measure is measure of settled snow morning of 12/6/09.
12/7/2009 7:00 AM 0.00 0.0 M 2.0 M
12/8/2009 7:00 AM 0.00 0.0 M M M I forgot to measure the depth of the snow remaining on the ground this morning.
12/9/2009 7:00 AM 1.64 0.0 M 0.0 M My measure is a little light as I spilled a bit from big tube to calibrated tube. Storm commenced 9 p.m. e.s.t. as snow, turned to sleet by 9:15, rain sometime later.
12/10/2009 7:00 AM T 0.0 M 0.0 M
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 I see I forgot to record Saturday's reading.
12/13/2009 7:00 AM 0.03 0.0 M 0.0 M
12/14/2009 7:00 AM 0.73 0.0 M 0.0 M
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
12/19/2009 7:00 AM 0.51 6.0 M 6.0 M wind has already created some drifting, making the snow measurement difficult
12/20/2009 7:00 AM 1.09 13.5 M 19.0 M At 1:40 p.m. 12/19 measured 7.0 inches of new snow with a water value of 0.62 inches At 8:00 p.m. 12/19 measured additional 6.25 inches of new snow with a water value of 0.43 inches At 7:00 a.m. 12/20 measured addition 0.25 inches of new snow with water value of 0.04 inches. Latter reading possibly marred by some blowing.
12/21/2009 7:00 AM 0.00 0.0 M 17.0 M
12/22/2009 7:00 AM 0.00 0.0 M M M Did get a chance to measure depth of snow on the ground this morning.
12/23/2009 7:00 AM 0.00 0.0 M 13.5 M
12/24/2009 7:00 AM 0.00 0.0 M 12.5 M
12/25/2009 7:00 AM 0.00 0.0 M 11.5 M
12/26/2009 7:00 AM 1.17 0.0 M 3.5 M
12/27/2009 7:00 AM 0.08 0.0 M T M snow pretty much melted.
12/28/2009 7:00 AM 0.00 0.0 M 0.0 M Trace of snow in some shaded spots, but not in my measuring areas.
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 7:00 AM 0.22 1.3 M 1.5 M Some rain or sleet preceded the snow as there is crunchy ice beneath the snow. (I measured snow at 1.25 inches.)
1/1/2010 7:00 AM 0.20 T M 1.0 M snowing at 7 a.m. to 8 a.m. on the 31st. Later some light sporadic rain showers. Yesterday's snow remains frozen on the ground at about one inch depth in my measuring areas
1/2/2010 7:00 AM 0.00 0.0 M T M More grass than snow showing in my measurement areas.
1/3/2010 7:00 AM 0.00 0.0 M T M
1/4/2010 7:00 AM 0.00 0.0 M T M Remains cold with snow frozen between tufts of grass.
1/5/2010 7:00 AM T 0.0 M T M Snow flurries 6:45 to 6:55 a.m. (EST) 1/5/10.
1/6/2010 7:00 AM 0.00 0.0 M T M Trace snow remains frozen to the ground in my measurement areas.
1/7/2010 7:00 AM 0.00 0.0 M T M
1/8/2010 7:00 AM 0.09 2.1 M 2.1 M
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 0.7 M
1/11/2010 7:00 AM 0.00 0.0 M 0.5 M
1/12/2010 7:00 AM 0.00 0.0 M M M Did not get the snow measurement this morning.
1/13/2010 7:00 AM 0.00 0.0 M 0.1 M Starting to see a lot of grass, but my test area still maintains snow cover.
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 T 0.0 M 0.0 M
1/18/2010 7:00 AM 0.64 0.0 M 0.0 M
1/19/2010 7:00 AM 0.00 0.0 M 0.0 M
1/20/2010 7:00 AM 0.01 0.0 M 0.0 M
1/21/2010 7:00 AM 0.00 0.0 M 0.0 M
1/22/2010 7:00 AM 0.13 0.0 M 0.0 M
1/23/2010 7:00 AM 0.00 0.0 M 0.0 M
1/24/2010 7:00 AM 0.00 0.0 M M M
1/25/2010 7:00 AM 0.51 0.0 M 0.0 M
1/26/2010 7:00 AM 0.08 0.0 M 0.0 M
1/27/2010 7:00 AM 0.00 0.0 M 0.0 M
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 5.6 M 5.5 M Snow began at 8:50 a.m. (1/30) At 12:30 p.m. there were 2.5 inches on the ground At 4:30 p.m. there were 5.8 inches on the ground and I measured a water content of 0.28 inches. It continued snowing, generally lightly, until at least 10 p.m. Between 4:30 p.m. and 7:00 a.m. my guage gathered an additional 0.05 inch of water content (melted snow), but the snow had settled, measuring 5.6 inches in total
2/1/2010 7:00 AM 0.00 0.0 M 4.0 M
2/2/2010 7:00 AM 0.00 0.0 M 3.5 M
2/3/2010 7:00 AM 0.32 4.0 M 6.5 M Snow began at 4:45 p.m. 2/2/10. It was still snowing at midnight.
2/4/2010 7:00 AM T 0.0 M 5.0 M
2/5/2010 7:00 AM 0.00 0.0 M 4.0 M Waiting for the big snow.
2/6/2010 7:00 AM 2.25 22.1 M 24.5 M At 5:30 p.m. (2/5) we had 2.3 inches of new snow from 0.22 inches of precipitation. At 7:30 p.m. (2/5) we had an additional 1.8 inches of new snow from 0.23 inches of precipitation. At 10:30 p.m. (2/5) we had an additional 4.0 inches of new snow from 0.43 inches of precipitation. At 1:30 a.m. (2/6) we had an additional 6.8 inches of new snow from 0.59 inches of precipitation. At 4:30 a.m. (2/6) we had an additional 3.7 inches of new snow from 0.35 inches prescipitation. At 7:00 a.m. (2/6) we had an additional 3.5 inches of new snow from 0.43 inches preciptation.
2/7/2010 7:00 AM 0.72 7.5 M 28.0 M
2/8/2010 7:00 AM 0.00 0.0 M 25.5 M
2/9/2010 7:00 AM 0.00 0.0 M 24.0 M
2/10/2010 7:00 AM 0.64 4.0 M 27.5 M Obviously sleet or freezing rain mixed with the snow overnight. Guage glazed and a crust on my snow board and other surfaces. Temperature stayed near 27 most of the night.
2/11/2010 7:00 AM 0.69 3.6 M 25.0 M I believe this morning's report has significant error potential from yesterday's strong winds. On the morning of the 10th I had measured 4.0 inches of new snow. At 10 a.m. I measured 2.1 inches of new snow with water content of 0.22 inches. At 1:15 p.m. I measured 1.0 inches of new snow with water content of 0.12 inches. It snowed until approx. 9:30 p.m. with significant wind, such that I shoveled three or more inches of snow from my steps at least twice, but At 10 p.m. I measured 0.5 inches of new snow but with water content of 0.35 inches.
2/12/2010 7:00 AM 0.00 0.0 M M M Icy condition prevents a reading of total snow depth at 7 a.m. There is a lot out there yet.
2/13/2010 7:00 AM 0.00 0.0 M 22.0 M
2/14/2010 7:00 AM 0.00 0.0 M 21.5 M
2/15/2010 7:00 AM 0.00 0.0 M 20.5 M
2/16/2010 7:00 AM 0.03 0.3 M 20.0 M Start time on the snow is spot on. My end time is more of an approximation.
2/17/2010 7:00 AM 0.00 0.0 M 19.5 M
2/18/2010 7:00 AM 0.00 0.0 M 18.5 M
2/19/2010 7:00 AM 0.00 0.0 M 17.5 M
2/20/2010 7:00 AM 0.00 0.0 M 17.0 M
2/21/2010 7:00 AM 0.00 0.0 M 16.0 M
2/22/2010 7:00 AM 0.00 0.0 M 14.0 M
2/23/2010 7:00 AM 0.17 0.0 M 12.5 M
2/24/2010 7:00 AM 0.00 0.0 M 10.5 M
2/25/2010 7:00 AM 0.02 0.1 M 9.5 M
2/26/2010 7:00 AM T T M 8.5 M flurries in early evening and again before 7 a.m.
2/27/2010 7:00 AM 0.02 0.7 M 9.0 M
2/28/2010 7:00 AM 0.00 0.0 M 8.5 M
3/1/2010 7:00 AM T 0.0 M 7.0 M Sprinkle in late afternoon, perhaps 5:30 or so. Ground becoming clear around trees but open yard remains snow covered.
3/2/2010 7:00 AM 0.00 0.0 M 6.0 M
3/3/2010 7:00 AM 0.07 0.0 M 5.5 M Fell as rain and snow. No accumulation of snow.
3/4/2010 7:00 AM T 0.0 M 4.0 M Open land still snow coverd. Land near buildings and trees showing bare ground.
3/5/2010 7:00 AM 0.00 0.0 M 4.0 M broad open area still snow covered and reported below. Reflected heat from buildings, trees has created clear ground.
3/6/2010 7:00 AM 0.00 0.0 M 2.0 M
3/7/2010 7:00 AM 0.00 0.0 M 2.0 M One third of the yard is clear, but my test area retains a blanket of snow, now down to an inch or two.
3/8/2010 7:00 AM 0.00 0.0 M M M Did not measure snow depth, but it is still out there.
3/9/2010 7:00 AM 0.00 0.0 M T M
3/10/2010 7:00 AM 0.00 0.0 M T M
3/11/2010 7:00 AM 0.00 0.0 M T M
3/12/2010 7:00 AM 0.51 0.0 M 0.0 M
3/13/2010 7:00 AM 0.45 0.0 M 0.0 M
3/14/2010 7:00 AM 0.89 0.0 M 0.0 M
3/15/2010 7:00 AM 0.04 0.0 M 0.0 M
3/16/2010 7:00 AM 0.07 0.0 M 0.0 M
3/17/2010 7:00 AM 0.00 0.0 M 0.0 M
3/18/2010 7:00 AM 0.00 0.0 M 0.0 M
3/19/2010 7:00 AM 0.00 0.0 M 0.0 M
3/20/2010 7:00 AM 0.00 0.0 M 0.0 M
3/21/2010 7:00 AM 0.00 0.0 M 0.0 M
3/22/2010 7:00 AM 0.02 0.0 M 0.0 M
3/23/2010 7:00 AM 0.36 0.0 M 0.0 M First thunderstorm of the season.
3/24/2010 7:00 AM T 0.0 M 0.0 M
3/25/2010 7:00 AM 0.00 0.0 M 0.0 M
3/26/2010 7:00 AM 0.29 0.0 M M M
3/27/2010 7:00 AM 0.10 0.0 M 0.0 M
3/28/2010 7:00 AM 0.00 0.0 M 0.0 M
3/29/2010 7:00 AM 0.61 0.0 M 0.0 M
3/30/2010 7:00 AM 0.03 0.0 M 0.0 M
3/31/2010 7:00 AM 0.01 0.0 M 0.0 M
4/1/2010 7:00 AM 0.00 0.0 M M M
4/2/2010 7:00 AM 0.00 0.0 M M M
4/3/2010 7:00 AM 0.00 0.0 M M M
4/4/2010 7:00 AM 0.00 0.0 M M M
4/5/2010 7:00 AM 0.00 0.0 M M M
4/6/2010 7:00 AM T 0.0 M M M Perhaps 60 seconds of rain at 6:31 a.m. 4/5/10
4/7/2010 7:00 AM 0.00 0.0 M 0.0 M High of 89 degrees
4/8/2010 7:00 AM 0.00 0.0 M 0.0 M
4/12/2010 7:00 AM 0.00 0.0 M 0.0 M
4/13/2010 7:00 AM 0.00 0.0 M 0.0 M
4/14/2010 7:00 AM 0.12 0.0 M 0.0 M
4/15/2010 7:00 AM 0.00 0.0 M 0.0 M
4/16/2010 7:00 AM 0.00 0.0 M 0.0 M
4/17/2010 7:00 AM 0.02 0.0 M 0.0 M
4/18/2010 7:00 AM 0.00 0.0 M 0.0 M
4/19/2010 7:00 AM 0.00 0.0 M 0.0 M
4/20/2010 7:00 AM 0.00 0.0 M 0.0 M
4/21/2010 7:00 AM 0.00 0.0 M 0.0 M
4/22/2010 7:00 AM 0.24 0.0 M 0.0 M
4/23/2010 7:00 AM 0.00 0.0 M 0.0 M
4/24/2010 7:00 AM 0.00 0.0 M 0.0 M
4/25/2010 7:00 AM 0.11 0.0 M 0.0 M Sprinkle 11:35 a.m. to noon 4/24. Sprinkle again 5:55 p.m. Some rain overnight.
4/26/2010 7:00 AM 0.94 0.0 M 0.0 M thunderstorm
4/27/2010 7:00 AM 0.15 0.0 M 0.0 M
4/28/2010 7:00 AM 0.00 0.0 M 0.0 M
4/29/2010 7:00 AM 0.00 0.0 M 0.0 M
4/30/2010 7:00 AM 0.00 0.0 M 0.0 M
5/1/2010 7:00 AM 0.00 0.0 M M M
5/2/2010 7:00 AM T M M M M
5/3/2010 7:00 AM 0.27 M M M M
5/4/2010 7:00 AM 0.03 M M M M
5/5/2010 7:00 AM 0.00 0.0 M M M
5/6/2010 7:00 AM 0.00 0.0 M M M
5/7/2010 7:00 AM 0.00 0.0 M M M
5/8/2010 7:00 AM 0.00 0.0 M M M
5/9/2010 7:00 AM 0.00 0.0 M M M
5/10/2010 7:00 AM 0.00 0.0 M M M
5/11/2010 7:00 AM 0.00 0.0 M M M
5/12/2010 7:00 AM 0.16 M M M M
5/16/2010 7:00 AM 0.00 0.0 M M M
5/17/2010 7:00 AM 0.02 M M M M
5/18/2010 7:00 AM 0.42 M M M M
5/19/2010 7:00 AM 0.02 M M M M
5/20/2010 7:00 AM T M M M M
5/21/2010 7:00 AM 0.00 0.0 M M M
5/22/2010 7:00 AM 0.00 0.0 M M M
5/23/2010 7:00 AM 1.27 M M M M
5/24/2010 7:00 AM 0.16 M M M M
5/25/2010 7:00 AM T M M M M
5/26/2010 7:00 AM 0.00 0.0 M M M
5/27/2010 7:00 AM 0.00 0.0 M M M
6/3/2010 7:00 AM 0.00 0.0 M M M
6/4/2010 7:00 AM 0.04 M M M M
6/5/2010 7:00 AM T M M M M
6/6/2010 7:00 AM 0.00 0.0 M M M
6/7/2010 7:00 AM 0.21 M M M M
6/8/2010 7:00 AM 0.00 0.0 M M M
6/9/2010 7:00 AM 0.00 0.0 M M M
6/10/2010 7:00 AM 0.16 M M M M
6/11/2010 7:00 AM 0.00 0.0 M M M
6/12/2010 7:00 AM 0.00 0.0 M M M
6/13/2010 7:00 AM T M M M M
6/14/2010 7:00 AM 0.01 M M M M
6/15/2010 7:00 AM 0.24 M M M M
6/16/2010 7:00 AM T M M M M brief sprinkle, 1:30 p.m.
6/17/2010 7:00 AM 0.15 M M M M
6/18/2010 7:00 AM 0.00 0.0 M M M
6/19/2010 7:00 AM 0.00 0.0 M M M
6/20/2010 7:00 AM 0.00 0.0 M M M
6/21/2010 7:00 AM 0.00 0.0 M M M
6/22/2010 7:00 AM 0.00 0.0 M M M
6/23/2010 7:00 AM 0.22 M M M M
6/24/2010 7:00 AM 0.00 0.0 M M M
6/25/2010 7:00 AM 0.00 0.0 M M M
6/26/2010 7:00 AM 0.00 0.0 M M M
6/27/2010 7:00 AM 0.00 0.0 M M M
6/28/2010 7:00 AM T M M M M Thermometer topped out at 95.0 degrees in the shade. Low 78.4 overnight. Rain shower may have struck me with ten rain drops.
6/29/2010 7:00 AM 0.88 M M M M Temperature dropped from 91 to 72 as storm passed through, to rise back to 78.
6/30/2010 7:00 AM 0.00 0.0 M M M
7/1/2010 7:00 AM 0.00 0.0 M M M
7/2/2010 7:00 AM 0.00 0.0 M M M
7/3/2010 7:00 AM 0.00 0.0 M M M
7/4/2010 7:00 AM 0.00 0.0 M M M
7/5/2010 7:00 AM 0.00 0.0 M M M
7/6/2010 7:00 AM 0.00 0.0 M M M
7/7/2010 7:00 AM 0.00 0.0 M M M high (in shade) 97.5 overnight low 75.0
7/8/2010 7:00 AM 0.00 0.0 M M M High yesterday 98.1 Overnight low 76.3
7/9/2010 7:00 AM 0.00 0.0 M M M High 93.0 overnight low, 72.3
7/10/2010 7:00 AM 0.03 M M M M High yesterday, 89.2 Overnight low, 73.2
7/11/2010 7:00 AM 0.55 M M M M High temperature, 80.66 Overnight low, 69.6
7/12/2010 7:00 AM 0.00 0.0 M M M High temperature, 87.8 Overnight low, 65.3
7/13/2010 7:00 AM 0.63 M M M M
7/14/2010 7:00 AM 1.30 M M M M
7/15/2010 7:00 AM 0.17 M M M M
7/16/2010 7:00 AM 0.00 0.0 M M M High, 90.0 Overnight low, 72.9
7/17/2010 7:00 AM 0.01 0.0 M M M High, 93.0 Overnight low, 73.0
7/18/2010 7:00 AM 0.00 0.0 M M M High temperature, 90.3 Overnight low, 72.7
7/19/2010 7:00 AM 0.43 M M M M high temperature, 91.0 Thunderstorm at 11:04 p.m. with temp still 81 Overnight low, 72.1
7/20/2010 7:00 AM T M M M M High temperature 88.9 overnight low, 72.1
7/21/2010 7:00 AM 0.00 0.0 M M M High temperature, 89.4 overnight low, 74.5
7/22/2010 7:00 AM 0.00 0.0 M M M High temperature, 89.6 Overnight low, 75.7
7/23/2010 7:00 AM 0.00 0.0 M M M high temperature, 90.7 overnight low, 71.2
7/24/2010 7:00 AM 0.00 0.0 M M M high temperature, 94.6 overnight low, 78.1
7/25/2010 7:00 AM 0.00 0.0 M M M High temperature 97.0 Overnight low: 79.0
7/26/2010 7:00 AM 0.90 M M M M High temperature, 96.3. Front with storm dropped temperature to 73.2 in 30 minutes time. Strong winds. Damage to vegetable garden. Overnight low temperature 68.2. Times for start/stop are within five minutes of actual.
7/27/2010 7:00 AM 0.00 0.0 M M M
7/28/2010 7:00 AM 0.00 0.0 M M M High temperature, 89.4 Low temperature, 72.9
7/29/2010 7:00 AM 0.00 0.0 M M M High temperature, 90.7 Low temperature, 75.6
7/30/2010 7:00 AM 0.47 M M M M High temperature, 90.3 Low temperature, 65.8 Thunderstorms moved through in afternoon, dropping temperature and humidity
7/31/2010 7:00 AM 0.00 0.0 M M M high temperature, 82.4 low temperature, 68.2
8/1/2010 7:00 AM 0.02 M M M M
8/2/2010 7:00 AM T M M M M
8/3/2010 7:00 AM T M M M M
8/4/2010 7:00 AM 1.09 M M M M Thunderstorm 3:30 a.m.
8/5/2010 7:00 AM 0.00 0.0 M M M Thunderstorms around us, but no rain at MD-MG-55
8/6/2010 7:00 AM 0.04 M M M M On the fringe of thunderstorms
8/7/2010 7:00 AM 0.00 0.0 M M M
8/8/2010 7:00 AM 0.00 0.0 M M M
8/9/2010 7:00 AM 0.00 0.0 M M M high temperature, 87.6 low temperature, 72.0
8/10/2010 7:00 AM 0.00 0.0 M M M high temperature, 91.4 low temperature, 75.0
8/11/2010 7:00 AM 0.00 0.0 M M M high temperature, 93.4 low temperature, 75.4
8/12/2010 7:00 AM T M M M M From 6:30 a.m. to 7:00 a.m. reading serious thunder and lightning in the area but only trace rain. The storm hit right at the top of the hour and results will be reported on the 13th. High temperature, 92.5 Low temperature, 77.9
8/13/2010 7:00 AM 3.28 M M M M Thunderstorm hit at 7:00 a.m. on Thursday, Aug 12 and dropped 1.92 inches of rain by its conclusion at 7:43 a.m. Temperature dropped from 77.9 to 70.7 by 7:30 a.m. Trace rain at 3:25. 5:57 p.m. another thunderstorm yields 0.32, concluding at 6:23 p.m. Overnight, after 2 a.m. more rain and raining at 7:00 a.m. reading. An additional 1.04 inches High temperature, 83.1 Low temperature 69.3
8/14/2010 7:00 AM 0.03 M M M M
8/15/2010 7:00 AM T M M M M
8/16/2010 7:00 AM 0.36 M M M M high temperature, 75.9 low temperature, 69.8
8/17/2010 7:00 AM 0.00 0.0 M M M high temperature, 89.8 low temperature, 73.2
8/18/2010 7:00 AM 1.71 M M M M high temperature, 87.4 low temperature (at 7 a.m.) 65.3
8/19/2010 7:00 AM 0.92 M M M M high temperature, 70.9 low temperature, 64.8
8/20/2010 7:00 AM 0.00 0.0 M M M high temperature, 84.0 low temperature, 67.5
8/21/2010 7:00 AM 0.00 0.0 M M M high temperature, 88.5 low temperature, 67.8
8/22/2010 7:00 AM 0.01 M M M M high temperature, 86.9 low temperature, 71.4
8/23/2010 7:00 AM 0.09 M M M M high temperature, 84.9 low temperature, 70.9
8/24/2010 7:00 AM 0.10 M M M M high temperature, 82.2 low temperature, 63.9
8/25/2010 7:00 AM 0.02 M M M M high temperature, 82.2 low temperature, 63.7
8/26/2010 7:00 AM 0.00 0.0 M M M high temperature, 78.6 low temperature, 64.4
8/29/2010 7:00 AM 0.00 0.0 M M M
8/30/2010 7:00 AM 0.00 0.0 M M M
8/31/2010 7:00 AM 0.00 0.0 M M M
9/1/2010 7:00 AM 0.00 0.0 M M M
9/2/2010 7:00 AM 0.00 0.0 M M M
9/3/2010 7:00 AM 0.00 0.0 M M M high temperature, 91.9 low temperature, 71.8
9/4/2010 7:00 AM 0.00 0.0 M M M high temperature, 86.2 low temperature, 66.0
9/5/2010 7:00 AM 0.00 0.0 M M M high temperature, 79.0 low temperature, 59.0
9/6/2010 7:00 AM 0.00 0.0 M M M high temperature, 76.1. low temperature, 57.2.
9/7/2010 7:00 AM 0.00 0.0 M M M
9/8/2010 7:00 AM 0.00 0.0 M M M high temperature, 89.1. low temperature, 71.8.
9/9/2010 7:00 AM 0.00 0.0 M M M high temperature, 88.7. low temperature, 58.1
9/10/2010 7:00 AM 0.00 0.0 M M M high temperature, 76.1. low temperature, 55.4. Sixteen days without a trace of precipitation.
9/11/2010 7:00 AM 0.00 0.0 M M M high temperature, 74.1. low temperature, 53.2.
9/12/2010 7:00 AM 0.66 M M M M High temperature, 76.1. Low temperature 53.6.
9/13/2010 7:00 AM 0.08 M M M M high temperature, 68.0. Low temperature 58.8.
9/14/2010 7:00 AM 0.00 0.0 M M M High temperature, 80.2. Low temperature, 58.6.
9/15/2010 7:00 AM 0.00 0.0 M M M High temperature, 77.5. Low temperature, 53.6.
9/16/2010 7:00 AM 0.00 0.0 M M M High temperature, 81.3. Low temperature, 53.8.
9/17/2010 7:00 AM 0.21 M M M M High temperature, 82.2. Low temperature, 53.8.
9/18/2010 7:00 AM 0.00 0.0 M M M High temperature, 77.9. Low temperature, 52.3.
9/19/2010 7:00 AM 0.00 0.0 M M M High temperature, 73.9. Low temperature, 52.3.
9/20/2010 7:00 AM 0.00 0.0 M M M High temperature, 81.3. Low temperature, 54.3.
9/21/2010 7:00 AM 0.00 0.0 M M M High temperature, 75.4. Low temperature, 48.4.
9/22/2010 7:00 AM 0.00 0.0 M M M HIgh temperature, 77.2. Low temperature, 48.4.
9/23/2010 7:00 AM 0.01 M M M M High temperature, 89.4. Low temperature, 64.6.
9/24/2010 7:00 AM 0.00 0.0 M M M High temperature, 88.3. Low temperature, 66.2.
9/25/2010 7:00 AM 0.00 0.0 M M M High temperature, 92.7. Low temperature, 66.2.
9/26/2010 7:00 AM 0.00 0.0 M M M High temperature, 87.3. Low temperature, 63.3.
9/27/2010 7:00 AM 0.30 M M M M High temperature, 70.7. Low temperature, 59.2.
9/28/2010 7:00 AM 0.37 M M M M High temperature, 74.3. Low temperature, 65.8.
9/29/2010 7:00 AM 0.02 M M M M High temperature, 79.2. Low temperature, 55.2.
9/30/2010 7:00 AM 1.62 M M M M High temperature, 66.9. Low temperature, 55.0.



Start Date End Date & Time Duration in Days Precipitation Snow Depth Snow Depth SWE Notes
10/11/2009 10/12/2009 7:00 AM 2 0.01 0.0 0.00
4/9/2010 4/11/2010 7:00 AM 3 0.53 0.0 0.00 Thunderstorm Thursday evening while we were away.
5/13/2010 5/15/2010 12:00 AM 3 0.99 M M
5/28/2010 6/02/2010 7:00 AM 6 0.13 M M
8/27/2010 8/28/2010 6:45 AM 2 0.00 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