Station Overview Station Location
Station Number MD-CH-7 Latitude 38.60731
Station Name Waldorf 3.2 SW Longitude -76.943247
County Charles Elevation (ft) 216



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 3.58 5.82 8 5.82 8 0.00 0 0 8 0 0.0 0 0
Nov 09 3.58 5.66 10 5.66 10 0.00 0 0 10 0 0.0 0 0
Dec 09 3.39 8.18 10 8.18 10 0.00 0 0 10 0 12.0 2 2
Jan 10 3.03 2.46 8 2.46 8 0.00 0 0 8 0 10.5 3 3
Feb 10 2.84 0.48 3 0.48 3 0.00 0 0 3 0 1.7 1 0
March 10 3.78 5.05 11 5.05 11 0.00 0 0 11 0 0.0 0 0
April 10 3.28 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
May 10 4.08 2.17 7 2.17 7 0.00 0 0 7 0 0.0 0 0
June 10 4.00 0.92 2 0.92 2 0.00 0 0 2 0 0.0 0 0
July 10 3.86 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
Aug 10 3.51 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
Sept 10 3.79 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
Water Year Totals: 42.72" 30.74" 59 days 30.74" 59 0.00" 0 days 0 59 days 0 days 24.2" 6 days 5 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
10/2/2009
10/3/2009
10/4/2009
10/5/2009
10/6/2009
10/7/2009
10/8/2009
10/9/2009
10/10/2009
10/11/2009
10/12/2009
10/13/2009
10/14/2009
10/15/2009 0.04
10/16/2009 0.70
10/17/2009 0.80
10/18/2009 1.05
10/19/2009
10/20/2009
10/21/2009
10/22/2009
10/23/2009
10/24/2009 0.02
10/25/2009 0.63
10/26/2009
10/27/2009 0.75
10/28/2009 1.83
10/29/2009
10/30/2009
10/31/2009
11/1/2009 0.78
11/2/2009 0.17
11/3/2009
11/4/2009
11/5/2009
11/6/2009
11/7/2009
11/8/2009
11/9/2009
11/10/2009
11/11/2009 0.30
11/12/2009 1.45
11/13/2009 1.09
11/14/2009 0.19
11/15/2009
11/16/2009
11/17/2009
11/18/2009
11/19/2009
11/20/2009 0.59
11/21/2009
11/22/2009
11/23/2009
11/24/2009 0.89
11/25/2009 0.15
11/26/2009 0.05
11/27/2009
11/28/2009
11/29/2009
11/30/2009
12/1/2009 0.34
12/2/2009
12/3/2009 1.37
12/4/2009
12/5/2009
12/6/2009 0.90
12/7/2009
12/8/2009
12/9/2009 1.69
12/10/2009
12/11/2009
12/12/2009
12/13/2009 0.04
12/14/2009 0.67
12/15/2009
12/16/2009
12/17/2009
12/18/2009
12/19/2009 0.59
12/20/2009 1.01
12/21/2009
12/22/2009
12/23/2009
12/24/2009
12/25/2009
12/26/2009 1.40
12/27/2009 0.17
12/28/2009
12/29/2009
12/30/2009
12/31/2009
Day of YearDaily PrcpMultiday Prcp
1/1/2010
1/2/2010
1/3/2010
1/4/2010
1/5/2010
1/6/2010
1/7/2010
1/8/2010 0.10
1/9/2010
1/10/2010
1/11/2010
1/12/2010 0.03
1/13/2010
1/14/2010
1/15/2010
1/16/2010
1/17/2010
1/18/2010 0.81
1/19/2010
1/20/2010
1/21/2010
1/22/2010 0.18
1/23/2010 0.10
1/24/2010
1/25/2010 0.50
1/26/2010 0.18
1/27/2010
1/28/2010
1/29/2010
1/30/2010
1/31/2010 0.56
2/1/2010
2/2/2010
2/3/2010 0.25
2/4/2010
2/5/2010
2/6/2010
2/7/2010
2/8/2010
2/9/2010
2/10/2010
2/11/2010
2/12/2010
2/13/2010
2/14/2010
2/15/2010
2/16/2010 0.03
2/17/2010
2/18/2010
2/19/2010
2/20/2010
2/21/2010
2/22/2010
2/23/2010 0.20
2/24/2010
2/25/2010
2/26/2010
2/27/2010
2/28/2010
3/1/2010
3/2/2010
3/3/2010 0.15
3/4/2010 0.02
3/5/2010
3/6/2010
3/7/2010
3/8/2010
3/9/2010
3/10/2010
3/11/2010
3/12/2010 0.63
3/13/2010 0.80
3/14/2010 0.65
3/15/2010 0.12
3/16/2010
3/17/2010
3/18/2010
3/19/2010
3/20/2010
3/21/2010
3/22/2010
3/23/2010 0.50
3/24/2010
3/25/2010
3/26/2010 0.50
3/27/2010 0.16
3/28/2010
3/29/2010 1.41
3/30/2010 0.11
3/31/2010
Day of YearDaily PrcpMultiday Prcp
4/1/2010
4/2/2010
4/3/2010
4/4/2010
4/5/2010
4/6/2010
4/7/2010
4/8/2010
4/9/2010
4/10/2010
4/11/2010
4/12/2010
4/13/2010
4/14/2010
4/15/2010
4/16/2010
4/17/2010
4/18/2010
4/19/2010
4/20/2010
4/21/2010
4/22/2010
4/23/2010
4/24/2010
4/25/2010
4/26/2010
4/27/2010
4/28/2010
4/29/2010
4/30/2010
5/1/2010
5/2/2010
5/3/2010
5/4/2010
5/5/2010
5/6/2010
5/7/2010
5/8/2010
5/9/2010
5/10/2010
5/11/2010
5/12/2010
5/13/2010
5/14/2010
5/15/2010 0.06
5/16/2010
5/17/2010 0.04
5/18/2010 0.82
5/19/2010
5/20/2010
5/21/2010
5/22/2010
5/23/2010 0.50
5/24/2010 0.04
5/25/2010
5/26/2010
5/27/2010
5/28/2010 0.31
5/29/2010 0.40
5/30/2010
5/31/2010
6/1/2010
6/2/2010 0.31
6/3/2010
6/4/2010 0.61
6/5/2010
6/6/2010
6/7/2010
6/8/2010
6/9/2010
6/10/2010
6/11/2010
6/12/2010
6/13/2010
6/14/2010
6/15/2010
6/16/2010
6/17/2010
6/18/2010
6/19/2010
6/20/2010
6/21/2010
6/22/2010
6/23/2010
6/24/2010
6/25/2010
6/26/2010
6/27/2010
6/28/2010
6/29/2010
6/30/2010
Day of YearDaily PrcpMultiday Prcp
7/1/2010
7/2/2010
7/3/2010
7/4/2010
7/5/2010
7/6/2010
7/7/2010
7/8/2010
7/9/2010
7/10/2010
7/11/2010
7/12/2010
7/13/2010
7/14/2010
7/15/2010
7/16/2010
7/17/2010
7/18/2010
7/19/2010
7/20/2010
7/21/2010
7/22/2010
7/23/2010
7/24/2010
7/25/2010
7/26/2010
7/27/2010
7/28/2010
7/29/2010
7/30/2010
7/31/2010
8/1/2010
8/2/2010
8/3/2010
8/4/2010
8/5/2010
8/6/2010
8/7/2010
8/8/2010
8/9/2010
8/10/2010
8/11/2010
8/12/2010
8/13/2010
8/14/2010
8/15/2010
8/16/2010
8/17/2010
8/18/2010
8/19/2010
8/20/2010
8/21/2010
8/22/2010
8/23/2010
8/24/2010
8/25/2010
8/26/2010
8/27/2010
8/28/2010
8/29/2010
8/30/2010
8/31/2010
9/1/2010
9/2/2010
9/3/2010
9/4/2010
9/5/2010
9/6/2010
9/7/2010
9/8/2010
9/9/2010
9/10/2010
9/11/2010
9/12/2010
9/13/2010
9/14/2010
9/15/2010
9/16/2010
9/17/2010
9/18/2010
9/19/2010
9/20/2010
9/21/2010
9/22/2010
9/23/2010
9/24/2010
9/25/2010
9/26/2010
9/27/2010
9/28/2010
9/29/2010
9/30/2010



Observation Date Observation Time Precipitation Snowfall Snowfall SWE Snow Depth Snow SWE Notes
10/15/2009 7:00 AM 0.04 M M M M
10/16/2009 7:00 AM 0.70 M M M M
10/17/2009 7:00 AM 0.80 M M M M
10/18/2009 7:00 AM 1.05 M M M M
10/24/2009 7:00 AM 0.02 M M M M
10/25/2009 7:00 AM 0.63 M M M M
10/27/2009 7:00 AM 0.75 M M M M Periods of moderate to heavy RA heavier E of station. 0.55 at 0530
10/28/2009 7:00 AM 1.83 M M M M Moderate to heavy rain Midnight to around 4AM
11/1/2009 7:00 AM 0.78 M M M M
11/2/2009 7:00 AM 0.17 M M M M
11/11/2009 7:00 AM 0.30 M M M M
11/12/2009 7:00 AM 1.45 M M M M
11/13/2009 7:00 AM 1.09 M M M M
11/14/2009 7:00 AM 0.19 M M M M
11/20/2009 7:00 AM 0.59 M M M M Thunder in afternoon shower(.41) .19 fell at night.
11/24/2009 7:00 AM 0.89 M M M M
11/25/2009 7:00 AM 0.15 M M M M
11/26/2009 7:00 AM 0.05 M M M M
12/1/2009 7:00 AM 0.34 M M M M
12/3/2009 7:00 AM 1.37 M M M M Steady rain during evening went more convective Midnight-3AM with occasional moderate to heavy showers.
12/6/2009 7:00 AM 0.90 2.0 M 1.0 M Rain and Wet Snow. Over half the event was wet snow. Water Equivalent of .90" from guage may be a bit high. 2 inches is my estimate of max accumulation on ground at any time during the event. 1.4 inches of wet snow on ground upon return from work late in the afternoon.
12/9/2009 7:00 AM 1.69 M M M M Periods of moderate to heavy rain late evening into the pre-dawn
12/13/2009 7:00 AM 0.04 M M M M A little sleet at onset around 3AM.
12/14/2009 7:00 AM 0.67 M M M M
12/19/2009 7:00 AM 0.59 M M M M
12/20/2009 7:00 AM 1.01 10.0 1.01 15.0 1.60 Long duration light to moderate SN gave an additional 10 inches since this time yesterday. Snow depth and water equivalents are best first guess estimates and are subject ot change.
12/26/2009 7:00 AM 1.40 M M M M Rain and Fog melted much snow overnight.
12/27/2009 7:00 AM 0.17 M M M M
1/8/2010 7:00 AM 0.10 2.2 M 2.0 M
1/12/2010 7:00 AM 0.03 0.3 M 0.2 M Band of evening light SN deposited 0.3" in about an hour
1/18/2010 7:00 AM 0.81 M M M M
1/22/2010 7:00 AM 0.18 M M M M
1/23/2010 7:00 AM 0.10 M M M M
1/25/2010 7:00 AM 0.50 M M M M
1/26/2010 7:00 AM 0.18 M M M M
1/31/2010 7:00 AM 0.56 8.0 M 7.0 0.56
2/3/2010 7:00 AM 0.25 1.7 0.25 M M Tru-check guage used which compares well to the Lakes region guage measuring water equivalent of snow events with little wind.
2/16/2010 7:00 AM 0.03 M M M M A repreive for the DCA-NYC corridor on snow. Just a Trace (had warmed up to 40) then changed to light rain.
2/23/2010 7:00 AM 0.20 M M M M Tru-check reading. Should be pretty accurate. R- No snow.
3/3/2010 7:00 AM 0.15 M M M M
3/4/2010 7:00 AM 0.02 M M M M
3/12/2010 7:00 AM 0.63 M M M M Some +SHRA during pre-dawn hours
3/13/2010 7:00 AM 0.80 M M M M
3/14/2010 7:00 AM 0.65 M M M M
3/15/2010 7:00 AM 0.12 M M M M
3/23/2010 7:00 AM 0.50 M M M M +TSRA before noon. Other TSRA passed to SW and W later in aftn. Thunder from 5PM storm crossing SW Charles County.
3/26/2010 7:00 AM 0.50 M M M M
3/27/2010 7:00 AM 0.16 M M M M
3/29/2010 7:00 AM 1.41 M M M M
3/30/2010 7:00 AM 0.11 M M M M
5/15/2010 7:00 AM 0.06 M M M M Some 3/4"-1" hail here 7:15 but much heavier hail near Route 228. Winds gusting to 50 from NE out of strong hail core
5/17/2010 7:00 AM 0.04 M M M M
5/18/2010 7:00 AM 0.82 M M M M
5/23/2010 7:00 AM 0.50 M M M M
5/24/2010 7:00 AM 0.04 M M M M
5/28/2010 7:00 AM 0.31 M M M M Slow moving TSRA to NW late aftn...no rain. Was in weak spot of TSRA that came thru during the night.
5/29/2010 7:00 AM 0.40 M M M M Brief +SHRA pre-dawn radar much heavier a few miles east. No thunder heard.
6/2/2010 7:00 AM 0.31 M M M M Midafternoon TSRA. Some pretty CBS N 5PM
6/4/2010 7:00 AM 0.61 M M M M Late Afternoon +TSRA



Start Date End Date & Time Duration in Days Precipitation Snow Depth Snow Depth SWE Notes



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