Station Overview Station Location
Station Number MD-CH-12 Latitude 38.614129
Station Name Bryans Road MD 2 ESE Longitude -77.036119
County Charles Elevation (ft) 190



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 3.56 2.91 31 2.91 31 0.00 0 0 13 2 0.0 0 0
Nov 11 3.45 3.25 29 1.23 25 2.02 4 2 6 0 0.0 0 0
Dec 11 3.33 5.57 23 5.57 23 0.00 0 0 5 1 0.0 0 0
Jan 12 2.98 1.63 31 1.63 31 0.00 0 0 10 3 1.6 3 1
Feb 12 2.79 1.41 29 1.41 29 0.00 0 0 12 2 1.1 2 1
March 12 3.76 2.28 29 2.28 29 0.00 0 0 10 4 0.0 0 0
April 12 3.30 2.13 30 2.13 30 0.00 0 0 9 1 0.0 0 0
May 12 4.08 3.70 31 3.70 31 0.00 0 0 14 4 0.0 0 0
June 12 4.06 1.33 27 1.33 27 0.00 0 0 8 3 0.0 0 0
July 12 3.92 0.82 21 0.82 21 0.00 0 0 6 1 0.0 0 0
Aug 12 3.55 3.43 31 3.43 31 0.00 0 0 11 3 0.0 0 0
Sept 12 3.88 3.20 26 3.20 26 0.00 0 0 12 0 0.0 0 0
Water Year Totals: 42.66" 31.66" 338 days 29.64" 334 2.02" 4 days 2 116 days 24 days 2.7" 5 days 2 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 T
10/2/2011 0.38
10/3/2011 0.01
10/4/2011 0.02
10/5/2011 0.00
10/6/2011 0.00
10/7/2011 0.00
10/8/2011 0.00
10/9/2011 0.00
10/10/2011 0.00
10/11/2011 0.00
10/12/2011 0.01
10/13/2011 0.29
10/14/2011 0.18
10/15/2011 0.22
10/16/2011 0.00
10/17/2011 0.00
10/18/2011 0.00
10/19/2011 0.15
10/20/2011 0.13
10/21/2011 0.00
10/22/2011 0.00
10/23/2011 0.00
10/24/2011 0.00
10/25/2011 T
10/26/2011 0.00
10/27/2011 0.05
10/28/2011 0.14
10/29/2011 0.60
10/30/2011 0.73
10/31/2011 0.00
11/1/2011 0.01
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 0.00
11/11/2011 0.09
11/12/2011 0.00
11/13/2011 0.00
11/14/2011 0.00
11/15/2011 0.00
11/16/2011 0.22
11/17/2011 **
11/18/2011 0.96
11/19/2011 0.00
11/20/2011 0.00
11/21/2011 0.12
11/22/2011 0.21 **
11/23/2011 1.06
11/24/2011
11/25/2011 0.00
11/26/2011 0.00
11/27/2011 0.00
11/28/2011 0.00
11/29/2011
11/30/2011 0.58
12/1/2011 0.00
12/2/2011 0.00
12/3/2011
12/4/2011
12/5/2011
12/6/2011 0.00
12/7/2011 1.72
12/8/2011 2.59
12/9/2011 0.00
12/10/2011 0.00
12/11/2011 0.00
12/12/2011
12/13/2011 0.00
12/14/2011
12/15/2011 0.00
12/16/2011 T
12/17/2011 0.00
12/18/2011 0.00
12/19/2011 0.00
12/20/2011 0.00
12/21/2011 0.00
12/22/2011 0.09
12/23/2011 0.62
12/24/2011 0.00
12/25/2011
12/26/2011
12/27/2011
12/28/2011 0.55
12/29/2011 0.00
12/30/2011 0.00
12/31/2011 0.00
Day of YearDaily PrcpMultiday Prcp
1/1/2012 0.00
1/2/2012 T
1/3/2012 0.00
1/4/2012 0.00
1/5/2012 0.00
1/6/2012 0.00
1/7/2012 0.00
1/8/2012 0.00
1/9/2012 0.00
1/10/2012 0.16
1/11/2012 0.00
1/12/2012 0.65
1/13/2012 0.07
1/14/2012 0.00
1/15/2012 0.00
1/16/2012 0.00
1/17/2012 0.16
1/18/2012 0.14
1/19/2012 0.00
1/20/2012 0.00
1/21/2012 0.25
1/22/2012 T
1/23/2012 0.01
1/24/2012 0.03
1/25/2012 0.00
1/26/2012 T
1/27/2012 0.02
1/28/2012 0.14
1/29/2012 0.00
1/30/2012 0.00
1/31/2012 0.00
2/1/2012 T
2/2/2012 0.09
2/3/2012 0.07
2/4/2012 0.00
2/5/2012 0.10
2/6/2012 0.01
2/7/2012 0.00
2/8/2012 0.00
2/9/2012 0.14
2/10/2012 0.00
2/11/2012 0.21
2/12/2012 0.02
2/13/2012 0.00
2/14/2012 0.00
2/15/2012 0.00
2/16/2012 0.00
2/17/2012 0.13
2/18/2012 0.00
2/19/2012 0.00
2/20/2012 0.15
2/21/2012 0.00
2/22/2012 0.00
2/23/2012 0.01
2/24/2012 0.08
2/25/2012 0.40
2/26/2012 T
2/27/2012 0.00
2/28/2012 0.00
2/29/2012 0.00
3/1/2012 1.39
3/2/2012 0.00
3/3/2012 0.34
3/4/2012 0.03
3/5/2012 0.00
3/6/2012 T
3/7/2012 0.00
3/8/2012 0.00
3/9/2012 0.02
3/10/2012 0.00
3/11/2012 0.00
3/12/2012
3/13/2012 0.03
3/14/2012 0.00
3/15/2012 0.00
3/16/2012 0.00
3/17/2012 T
3/18/2012 0.00
3/19/2012 T
3/20/2012 0.03
3/21/2012 0.00
3/22/2012 T
3/23/2012 0.00
3/24/2012 0.00
3/25/2012 0.37
3/26/2012 0.01
3/27/2012 0.00
3/28/2012
3/29/2012 0.04
3/30/2012 0.00
3/31/2012 0.02
Day of YearDaily PrcpMultiday Prcp
4/1/2012 0.00
4/2/2012 0.11
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 0.02
4/11/2012 0.00
4/12/2012 T
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 0.00
4/19/2012 0.09
4/20/2012 0.00
4/21/2012 0.00
4/22/2012 0.11
4/23/2012 1.21
4/24/2012 0.02
4/25/2012 0.00
4/26/2012 0.13
4/27/2012 0.09
4/28/2012 0.00
4/29/2012 0.35
4/30/2012 0.00
5/1/2012 0.41
5/2/2012 0.10
5/3/2012 T
5/4/2012 T
5/5/2012 0.09
5/6/2012 T
5/7/2012 T
5/8/2012 0.00
5/9/2012 0.20
5/10/2012 0.40
5/11/2012 0.00
5/12/2012 0.00
5/13/2012 0.00
5/14/2012 0.08
5/15/2012 1.01
5/16/2012 0.16
5/17/2012 0.00
5/18/2012 0.00
5/19/2012 0.00
5/20/2012 0.00
5/21/2012 0.08
5/22/2012 0.07
5/23/2012 0.03
5/24/2012 0.28
5/25/2012 0.00
5/26/2012 0.00
5/27/2012 0.00
5/28/2012 0.12
5/29/2012 0.00
5/30/2012 0.67
5/31/2012 0.00
6/1/2012 T
6/2/2012 0.45
6/3/2012 0.00
6/4/2012 0.00
6/5/2012 0.00
6/6/2012 0.00
6/7/2012 0.02
6/8/2012 T
6/9/2012 0.00
6/10/2012 0.00
6/11/2012 0.00
6/12/2012 0.14
6/13/2012 0.55
6/14/2012 0.00
6/15/2012 0.00
6/16/2012 0.00
6/17/2012 0.00
6/18/2012 0.01
6/19/2012 0.12
6/20/2012 0.00
6/21/2012 0.00
6/22/2012 0.00
6/23/2012 0.02
6/24/2012 0.00
6/25/2012 0.02
6/26/2012 T
6/27/2012 0.00
6/28/2012
6/29/2012
6/30/2012
Day of YearDaily PrcpMultiday Prcp
7/1/2012
7/2/2012 0.05
7/3/2012 0.00
7/4/2012 0.00
7/5/2012 0.00
7/6/2012 0.00
7/7/2012 0.00
7/8/2012 0.00
7/9/2012
7/10/2012
7/11/2012
7/12/2012
7/13/2012 0.00
7/14/2012 T
7/15/2012
7/16/2012
7/17/2012
7/18/2012
7/19/2012
7/20/2012 0.29
7/21/2012 0.02
7/22/2012 0.12
7/23/2012 0.00
7/24/2012 0.00
7/25/2012 0.00
7/26/2012 0.00
7/27/2012 0.02
7/28/2012 0.00
7/29/2012 0.32
7/30/2012 0.00
7/31/2012 0.00
8/1/2012 0.06
8/2/2012 0.00
8/3/2012 0.00
8/4/2012 0.00
8/5/2012 0.00
8/6/2012 0.03
8/7/2012 0.01
8/8/2012 0.00
8/9/2012 0.00
8/10/2012 0.08
8/11/2012 2.44
8/12/2012 0.00
8/13/2012 0.00
8/14/2012 T
8/15/2012 0.02
8/16/2012 0.00
8/17/2012 0.00
8/18/2012 0.03
8/19/2012 0.00
8/20/2012 0.03
8/21/2012 0.29
8/22/2012 0.00
8/23/2012 0.00
8/24/2012 0.00
8/25/2012 0.00
8/26/2012 0.30
8/27/2012 0.14
8/28/2012 T
8/29/2012 T
8/30/2012 0.00
8/31/2012 0.00
9/1/2012 0.00
9/2/2012 0.03
9/3/2012 0.01
9/4/2012 0.08
9/5/2012 0.38
9/6/2012 0.01
9/7/2012 0.22
9/8/2012 0.00
9/9/2012 0.63
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 0.34
9/19/2012 0.74
9/20/2012 0.00
9/21/2012 0.00
9/22/2012 0.00
9/23/2012 0.06
9/24/2012
9/25/2012
9/26/2012
9/27/2012
9/28/2012 0.35
9/29/2012 0.35
9/30/2012 0.00



Observation Date Observation Time Precipitation Snowfall Snowfall SWE Snow Depth Snow SWE Notes
10/1/2011 6:00 AM T M M M M
10/2/2011 8:30 AM 0.38 M M M M
10/3/2011 8:00 AM 0.01 M M M M
10/4/2011 7:00 AM 0.02 M M M M
10/5/2011 7:00 AM 0.00 0.0 M M M
10/6/2011 7:00 AM 0.00 0.0 M M M
10/7/2011 7:00 AM 0.00 0.0 M M M
10/8/2011 7:00 AM 0.00 0.0 M M M
10/9/2011 7:00 AM 0.00 0.0 M M M
10/10/2011 6:00 AM 0.00 0.0 M M M
10/11/2011 7:00 AM 0.00 0.0 M M M
10/12/2011 7:00 AM 0.01 M M M M BRIEF -SHRA @ APPROXIMATELY 0415 AND 0650
10/13/2011 5:00 AM 0.29 M M M M
10/14/2011 6:00 AM 0.18 M M M M TRW 10/13/2011 AFTN
10/15/2011 7:00 AM 0.22 M M M M
10/16/2011 7:00 AM 0.00 0.0 M M M
10/17/2011 7:00 AM 0.00 0.0 M M M
10/18/2011 6:30 AM 0.00 0.0 M M M
10/19/2011 7:00 AM 0.15 M M M M
10/20/2011 5:00 AM 0.13 M M M M 10/19/2011: -SHRAs MORN AND AFTN
10/21/2011 7:00 AM 0.00 0.0 M M M
10/22/2011 7:00 AM 0.00 0.0 M M M
10/23/2011 7:00 AM 0.00 0.0 M M M
10/24/2011 7:00 AM 0.00 0.0 M M M
10/25/2011 7:00 AM T M M M M
10/26/2011 7:00 AM 0.00 0.0 M M M
10/27/2011 7:00 AM 0.05 M M M M
10/28/2011 6:00 AM 0.14 M M M M
10/29/2011 7:00 AM 0.60 M M M M 0.06 -SHs from 10/28/2011. 0.54 as 7 a.m. 10/29/2011. Moderate rain at obs.
10/30/2011 7:00 AM 0.73 T T 0.0 0.00 10/29/2011: RA OVNGT W/ SN PL mixed INTMT during day. RA E approx 8:15 p.m. 1st FZ/FRST @ ~ 3:25 am
10/31/2011 7:00 AM 0.00 0.0 M M M
11/1/2011 7:00 AM 0.01 0.0 M M M
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 7:00 AM 0.00 0.0 M M M FG forming at OBS.
11/11/2011 7:00 AM 0.09 M M M M
11/12/2011 7:00 AM 0.00 0.0 M M M
11/13/2011 7:00 AM 0.00 0.0 M M M
11/14/2011 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 7:00 AM 0.22 M M M M -RA B ~5pm 11/15/11 & CONT OVNGT -RA AT OBS
11/19/2011 7:00 AM 0.00 0.0 M M M
11/20/2011 7:00 AM 0.00 0.0 M M M
11/21/2011 7:00 AM 0.12 M M M M 11-21-2011: -R B ~ 2:15 a.m. E ~ 3:10 a.m. FG @ obs.
11/22/2011 7:00 AM 0.21 M 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
11/30/2011 7:00 AM 0.58 M M M M -RASH B~9:45 a.m. E~2:10 p.m. @ times moderate RASH 11/29/2011
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
12/6/2011 7:00 AM 0.00 0.0 M M M
12/7/2011 7:00 AM 1.72 M M M M Rain from 12/6 continuing into 12/7.
12/8/2011 3:30 AM 2.59 M M M M Two total rainfall from this event beginning at 9:50 a.m. 12/6/2011 and ending at 11 p.m. 12/7/2011 is 4.31 inches. Thunder heard during evening of 12/7.
12/9/2011 7:00 AM 0.00 0.0 M M M
12/10/2011 7:00 AM 0.00 0.0 M M M
12/11/2011 7:00 AM 0.00 0.0 M M M
12/13/2011 7:00 AM 0.00 0.0 M M M
12/15/2011 7:00 AM 0.00 0.0 M M M
12/16/2011 7:00 AM T 0.0 M M M
12/17/2011 7:00 AM 0.00 0.0 M M M
12/18/2011 7:00 AM 0.00 0.0 M M M
12/19/2011 7:00 AM 0.00 0.0 M M M
12/20/2011 7:00 AM 0.00 0.0 M M M
12/21/2011 7:00 AM 0.00 0.0 M M M
12/22/2011 7:00 AM 0.09 M M M M
12/23/2011 7:00 AM 0.62 M M M M
12/24/2011 7:00 AM 0.00 0.0 M M M
12/28/2011 7:00 AM 0.55 M M M M
12/29/2011 7:00 AM 0.00 0.0 M M M
12/30/2011 7:00 AM 0.00 0.0 M M M
12/31/2011 7:00 AM 0.00 0.0 M M M
1/1/2012 7:00 AM 0.00 0.0 M M M HAPPY NEW YEAR!
1/2/2012 7:00 AM T 0.0 M M M Sprinkles late aftn 1/1/2012.
1/3/2012 7:00 AM 0.00 0.0 M M M
1/4/2012 7:00 AM 0.00 0.0 M M M Low this am 15.8°
1/5/2012 7:00 AM 0.00 0.0 M M M
1/6/2012 7:00 PM 0.00 0.0 M M M
1/7/2012 7:00 AM 0.00 0.0 M M M
1/8/2012 7:00 AM 0.00 0.0 M M M
1/9/2012 7:00 AM 0.00 0.0 M M M
1/10/2012 7:00 AM 0.16 1.0 0.16 T T Snow showers @ 11:10 a.m. 1/9/2012. SN B 1:10 p.m. 1/9/2012 E ~6:10 p.m. totalling 1 inch for a SWE of just over 6:1
1/11/2012 7:00 AM 0.00 0.0 M M M
1/12/2012 7:00 AM 0.65 0.0 M M M 1/11/2012: Sprinkles began during the late morning hours with first measureable RN occuring between 11:50 a.m. and noon. RN continued INTM through out the AFTN, evening, and early morning hours of 1/12/2012. Last measureable RN occurred at 4 a.m., 1-12-2012.
1/13/2012 7:00 AM 0.07 0.0 M M M 1-13-2012: Measurable PCPN B~ 2:40 am E~ 3:10 am. Began again ~4:00 am E ~4:30 am. No SN or PL Observed.
1/14/2012 7:00 AM 0.00 0.0 M M M
1/15/2012 7:00 AM 0.00 0.0 M M M
1/16/2012 7:00 AM 0.00 0.0 M M M
1/17/2012 7:00 AM 0.16 0.0 M M M 1-16-2012: Sprinkles began ~8:45 p.m. with first 0.01 inches between 9:10-9:20 pm. At MDNGHT had 0.02 inches.***********************************1-17-2012: -RN CONT AFT MDNGT ACCMUL 0.14 inches by 7 am. OBS
1/18/2012 7:00 AM 0.14 0.0 M M M 1/17/2012: -RA CONT after yesterday's 7 am obs. Between ~7:10 and 9 am REC'D 0.12 inches of RA. REC'D another 0.01" between ~10:30 and 10:40 a.m., and 0.01" between ~ 1:20 and 1:30 pm. Skies began clearing to the west at about 1:50 p.m. 1/18/2012 FROPA during early morning hours with WNDSHFT to NW and a temp drop of ~19° but with no measureable PCPN recorded.
1/19/2012 7:00 PM 0.00 0.0 M M M
1/20/2012 7:00 AM 0.00 0.0 M M M
1/21/2012 7:00 AM 0.25 0.5 0.04 0.5 M 1-20-2012: SN B 9:55 pm E 12:55 am on 1-21-2012. Total of 0.3 inches of SN measured with a liquid equivalent of 0.03 inches before a switchover to sleet or PL. PL continued until 1:20 am when it mixed with freezing drizzel and then turned to all freezing. SN and IP depth at switchover was 0.5 inches. Freezing drizzel has continued through obs.
1/22/2012 7:00 AM T M M M M -SN AT OBS
1/23/2012 7:00 AM 0.01 0.1 0.01 0.0 M 1-22-2012: -SN began in the early morning hours and continued to 9 a.m. leaving 0.1 inches of snow and 0.01 liquid. Freeze drizzle began at 5:18 pm and continued intermittently unitl around 6:30 pm leaving a T of liquid pcpn.
1/24/2012 7:00 AM 0.03 M M M M Drizzle during the day with light fog in the morning and thick fog in the evening.
1/25/2012 7:00 AM 0.00 0.0 M M M
1/26/2012 7:00 AM T 0.0 M M M Ground appears damp in places.
1/27/2012 7:00 AM 0.02 M M M M -SH at ~ 4:40 a.m. No precip at obs. Obs temp 63.7°
1/28/2012 7:00 AM 0.14 M M M M 1-27-2012: +SHRA in advance of FROPA dropped 0.14 inches between 9:10 and 9:20 a.m. with winds gusting to 14 mph and a rain rate of 2.91 inches per hour. Driving difficult due to low visibility. FROPA shortly thereafter.
1/29/2012 7:00 AM 0.00 0.0 M M M
1/30/2012 7:00 AM 0.00 0.0 M M M
1/31/2012 7:00 AM 0.00 0.0 M M M
2/1/2012 7:00 AM T M M M M -SH B ~0630 CONT THRU 0700 OBS
2/2/2012 7:00 AM 0.09 M M M M 2-1-2012: -SHRA CONT AFT OBS. 0.01 ACCMUL BY 7:10 am -SHRA stopped shortly thereafter. 2-2-2012: -SHRA B 0035 CONT through this morning's obs. -SHRA AT OBS
2/3/2012 7:00 AM 0.07 M M M M -SHRA CONT AFT YSD OBS E ~11:00 a.m. 2/2/2012
2/4/2012 7:00 AM 0.00 0.0 M M M
2/5/2012 7:00 AM 0.10 M M M M February 4, 2012: -RA B ~ 4:10 pm E 6:20 W/ 0.09 inches falling in just over 2 HRS. INTMT -RA EVGN. FG -EVNG. February 5, 2012: -RA am
2/6/2012 7:00 AM 0.01 M M M M Recorded 0.01 inches of PCPN at 7:10 am YSTD after the 7 a.m. obs. OVC AM Clearing PM
2/7/2012 7:00 AM 0.00 0.0 M M M
2/8/2012 7:00 AM 0.00 0.0 M M M
2/9/2012 7:00 AM 0.14 0.0 0.00 0.0 0.00 12/8/2012: -SHRA B 12:50p CONT INTMT E 6:45p No snow fell.
2/10/2012 7:00 AM 0.00 0.0 0.00 0.0 0.00
2/11/2012 7:00 AM 0.21 0.0 0.00 0.0 0.00 Feb 11 2012: -RA began shortly after MDNT. CONT INTMT TO OBS. -RA CONT AT OBS
2/12/2012 7:00 AM 0.02 0.2 0.02 T T Snow in early morning hours.
2/13/2012 7:00 AM 0.00 0.0 M M M Low this morning at 5:40 a.m.: 18.8° under clear skies.
2/14/2012 7:00 AM 0.00 0.0 M M M
2/15/2012 7:00 AM 0.00 0.0 M M M
2/16/2012 7:00 AM 0.00 0.0 M M M
2/17/2012 7:00 AM 0.13 0.0 0.00 M M Feb 16, 2012: -R B 10:50 am E ~5:10 pm. Max/Min 46/37 PWG 11 mph from S. -FG B ~10 pm became +FG w/ visibility below 1/4 mile by 11:30 pm. +FG at obs
2/18/2012 7:00 AM 0.00 0.0 M M M
2/19/2012 7:00 AM 0.00 0.0 M M M Feb 18, 2012: Max/Min 58/29 PWG 22mph from SW
2/20/2012 7:00 AM 0.15 0.9 0.13 0.5 0.15 Event began as a light mist at 7:02 pm w/ a switch over to SN at 8:15 pm. SWE Ratio: 7:1. Temp never dropped below 33 degrees.
2/21/2012 7:00 AM 0.00 0.0 M 0.0 0.00
2/22/2012 7:00 AM 0.00 0.0 M M M
2/23/2012 7:00 AM 0.01 M M M M 2-22-2012: -RA B 11:05 p.m. 2-23-2012: Recorded 0.01 precip at 1:40 a.m.
2/24/2012 7:00 AM 0.08 0.0 0.00 0.0 0.00 2-23-2012: SHRA 11:30 - 11:35 pm dropping 0.02 inches of precip. 2-24-2012 +SHRA 12:05-12:15 am 0.06 pcpn fell. Precip ended ~12:50 am
2/25/2012 7:00 AM 0.40 M M M M TRW @ 2:30 pm w/ CC Lightning. E ~ 3:40 pm.
2/26/2012 7:00 AM T T T 0.0 0.00 2/25/2012: INTM -SNSH 8:05 to 9 am. LWX notified via email.
2/27/2012 7:00 AM 0.00 0.0 M M M Yesterdays's high and low were 49 and 31 w/ a PWG of 25 mph from the WNW.
2/28/2012 7:00 AM 0.00 0.0 M M M 2-27-2012: Max/Min 65/45 PWG 23 MPH SW
2/29/2012 7:00 AM 0.00 0.0 M M M
3/1/2012 7:00 AM 1.39 M M M M 2-29-2012: MAX/MIN 58/39 PWG 23 MPH SW RA B 7:50am CONT INTMT. NO THUNDER HEARD
3/2/2012 7:00 AM 0.00 0.0 M M M March 1, 2012: MAX/MIN 71/45 PWG 23 SW
3/3/2012 7:00 AM 0.34 M M M M March 2, 2012: MAX/MIN 56/34 PWG 17 ENE
3/4/2012 7:00 AM 0.03 M M M M
3/5/2012 7:00 AM 0.00 0.0 M M M
3/6/2012 7:00 AM T T T 0.0 0.00 -SN B ~9 am E ~11 am YSTD NO ACCUML MAX/MIN 45/29 PWG 21 MPH WNW
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 3/8/2012: MAX/MIN 67/38 PWG 31 MPH SW
3/9/2012 7:00 AM 0.02 M M M M -RA B ~ 4:00 A.M. NO PCPN AT 7AM OBS
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
3/13/2012 7:00 AM 0.03 M M M M 3-13-2012: BRF SH @ 2:40 a.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 T M M M M
3/18/2012 7:00 AM 0.00 0.0 M M M
3/19/2012 7:00 AM T 0.0 M M M
3/20/2012 7:00 AM 0.03 M M M M F @ OBS
3/21/2012 7:00 AM 0.00 0.0 M M M
3/22/2012 7:00 AM T M M M M
3/23/2012 7:00 AM 0.00 0.0 M M M
3/24/2012 7:00 AM 0.00 0.0 M M M
3/25/2012 7:00 AM 0.37 M M M M RA B ~ 11:30 a.m. on 3/24/2012 and continued INTMT until this obs. -RA @ -FG at obs.
3/26/2012 7:00 AM 0.01 M M M M 0.01 inches fell shortly after yesterday's 7 a.m. morning obs.
3/27/2012 7:00 AM 0.00 0.0 M M M Low this a.m. 32.9°
3/29/2012 7:00 AM 0.04 M M M M
3/30/2012 7:00 AM 0.00 0.0 M M M
3/31/2012 7:00 AM 0.02 M M M M AFTN SH 3/30/2012
4/1/2012 7:00 AM 0.00 0.0 M M M
4/2/2012 7:00 AM 0.11 M M M M
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 6:00 AM 0.00 0.0 M M M
4/10/2012 7:00 AM 0.02 M M M M -SH Monday evening 4/9/2012
4/11/2012 7:00 AM 0.00 0.0 M M M
4/12/2012 7:00 AM T M M M M T occurred the evening of 4/11
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 7:00 AM 0.00 0.0 M M M
4/19/2012 7:00 AM 0.09 M M M M Rain fell in the late morning hours of 4/18/12.
4/20/2012 7:00 AM 0.00 0.0 M M M
4/21/2012 7:00 AM 0.00 0.0 M M M
4/22/2012 7:00 AM 0.11 0.0 M M M 0.07 at midnight 4/21/12
4/23/2012 7:00 AM 1.21 M M M M
4/24/2012 7:00 AM 0.02 M M M M
4/25/2012 7:00 AM 0.00 0.0 M M M
4/26/2012 7:00 AM 0.13 M M M M RASH B approximately 6:15 a.m. 4/26/2012. Continues at obs.
4/27/2012 7:00 AM 0.09 M M M M RA continued after YSTD's obs.
4/28/2012 7:00 AM 0.00 0.0 M M M
4/29/2012 7:00 AM 0.35 M M M M RASH B approx 6:10 p.m. 4/28/2012 and continued overnight E at approx 3:15 a.m. 4/29/2012. -FG at obs. Midnight split was 0.15/0.20 YSTD MAX MIN 60/38
4/30/2012 7:00 AM 0.00 0.0 M M M
5/1/2012 7:00 AM 0.41 M M M M +RA B 0612 E 0620 with CCCG LGHT. RA B0621. RA CONT @ OBS
5/2/2012 7:00 AM 0.10 M M M M 0.02 carryover from morning pcpn on 5/1/2012. 5/2/2012: TRW began @ 5:34 a.m. and E @ 6:15 a.m. dropping 0.08" pcpn. CC LGHT only during TRW.
5/3/2012 7:00 AM T M M M M -FG and - Mist @ obs
5/4/2012 7:00 AM T M M M M T of pcpn was MIST from YSTD morning. -FG at obs
5/5/2012 7:00 AM 0.09 M M M M PCPN on 5/4/2012 from 11:50 a.m. and 6 p.m. TRWs.
5/6/2012 8:00 AM T M M M M
5/7/2012 7:00 AM T M M M M
5/8/2012 7:00 AM 0.00 0.0 M M M YSTD MAX/MIN 71/55
5/9/2012 7:00 AM 0.20 M M M M -RA at obs. 0.05/0.15 midnight split between 5/8 and 5/9 YSTD M/M 74/58
5/10/2012 7:00 AM 0.40 M M M M RA fell during the early morning hours of 5/9/2012 and pretty much continuously between 1835 and 2230 5/9/2012 with 0.02 after that time period
5/11/2012 7:00 AM 0.00 0.0 M M M YSTD M/M 68/50
5/12/2012 7:00 AM 0.00 0.0 M M M YSTD Max/Min 72/45
5/13/2012 7:00 AM 0.00 0.0 M M M YSTD Max/Min 78/46
5/14/2012 7:00 AM 0.08 M M M M -RA B APPROX 0515 AND CONT TO AND THROUGH OBS. YSTD MAX/MIN 80/60
5/15/2012 7:00 AM 1.01 M M M M 0.20 from YSTD
5/16/2012 7:00 AM 0.16 M M M M
5/17/2012 7:00 AM 0.00 0.0 M M M YSTD Max/Min 82/60
5/18/2012 7:00 AM 0.00 0.0 M M M YSTD Max/Min 74.9/53.5
5/19/2012 7:00 AM 0.00 0.0 M M M YSTD Max/Min 74.0/47.1
5/20/2012 7:00 AM 0.00 0.0 M M M YSTD Max/Min 80.5/48.5
5/21/2012 7:00 AM 0.08 M M M M -RASH began 10:35 pm 5/20/2012 and continued slowly and intermittenly through morning hours. Currently drizzle falling.
5/22/2012 7:00 AM 0.07 M M M M 0.07 Occurred AFT YSTD 7 a.m. OBS. -RA, DZ, and FG during morning hours 5/21/2012
5/23/2012 7:00 AM 0.03 M M M M
5/24/2012 7:00 AM 0.28 M M M M May 23, 2012 - 0.16 precip between 2355 and midnight. 0.12 between 0000 and 0010 on May 24 for a total of 0.28 YSTD Max/Min 81.4/63.5
5/25/2012 7:00 AM 0.00 0.0 M M M
5/26/2012 7:00 AM 0.00 0.0 M M M
5/27/2012 7:00 AM 0.00 0.0 M M M YSTD Max/Min 86.5/66.3
5/28/2012 7:00 AM 0.12 M M M M SHRA 5/27/2012 from approx 9:50 p.m. to 10:15 p.m. YSTD Max/Min 86.1/67.1 PWG 22 MPH from SSW @ 9:50 p.m.
5/29/2012 7:00 AM 0.00 0.0 M M M YSTD Max/Min 91.0/65.5
5/30/2012 7:00 AM 0.67 M M M M
5/31/2012 7:00 AM 0.00 0.0 M M M YSTD Max/Min 81.4/66.8
6/1/2012 7:00 AM T M M M M Sprinkles before obs.
6/2/2012 7:00 AM 0.45 M M M M TRW+ w/ CCLGHT & FROPA
6/3/2012 7:00 AM 0.00 0.0 M M M YSTD Max/Min 74.0/57.0. Kelvin-Helmholtz instability clouds observed @ approx. 1430 to 1440. This MRNL's low dropped to 52.2
6/4/2012 7:00 AM 0.00 0.0 M M M YSTD Max/Min 78.8/52.2 Incredibility beautiful day.
6/5/2012 7:00 AM 0.00 0.0 M M M YSTD Max/Min 75.3/57.2
6/6/2012 7:00 AM 0.00 0.0 M M M YSTD Max/Min 70.1/54.7 which is unseasonable cool. Transit of Venus in evening.
6/7/2012 7:00 AM 0.02 M M M M June 6, 2012: Cloudy w/ limited sunshine. -SHRA B2000E2015
6/8/2012 7:00 AM T M M M M Sprinkle YSTD AFTN
6/9/2012 7:00 AM 0.00 0.0 M M M
6/10/2012 7:00 AM 0.00 0.0 M M M YSTD Max/Min 90.1/59.5
6/11/2012 7:00 AM 0.00 0.0 M M M YSTD Max/Min 92.7/61.0
6/12/2012 7:00 AM 0.14 M M M M -SHRA INTMT B0200. -SHRA @ OBS. YSTD Max/Min 88.4/66.0
6/13/2012 7:00 AM 0.55 M M M M SHRAs ASSC W/ FROPA FELL MSTLY AFTN FG and TCu EVN HRS 6/12/2012
6/14/2012 7:00 AM 0.00 0.0 M M M
6/15/2012 7:00 AM 0.00 0.0 M M M
6/16/2012 7:00 AM 0.00 0.0 M M M
6/17/2012 7:00 AM 0.00 0.0 M M M
6/18/2012 7:00 AM 0.01 M M M M -SHRA B0545 CONT THRU OBS.
6/19/2012 7:00 AM 0.12 M M M M
6/20/2012 7:00 AM 0.00 0.0 M M M YSTD MAX/MIN 88.8/64.7
6/21/2012 7:00 AM 0.00 0.0 M M M YSTD MAX/MIN 96.3/69.1
6/22/2012 7:00 AM 0.00 0.0 M M M
6/23/2012 7:00 AM 0.02 M M M M -SHRA B1645 INTMT TO 1840 (APPOX) YSTD MAX/MIN 96.1/71.1 MIN OCURED @ 2359
6/24/2012 7:00 AM 0.00 0.0 M M M YSTD MAX/MIN 91.0/67.8 This is the 4th day in a row of a mini-heat wave with max temps above 90°. Over that time period the avg max has been 95.4. Hope the heat wave will end today or tomorrow.
6/25/2012 7:00 AM 0.02 M M M M 250652 -RASA B0105E0115 YSTD MAX/MIN 91.4/62.6 5th straight day of 90+ degree days. Avg max during this heat wave is 94.6°
6/26/2012 7:00 AM T M M M M Sprinkles in AFTN. FROPA LATE AFTN. YSTD MAX/MIN 87.8/68.8
6/27/2012 7:00 AM 0.00 0.0 M M M YSTD MAX/MIN 81.6/58.3
7/2/2012 7:00 AM 0.05 M M M M -SHRA B0430E0440 7/2/2012. YSTD MAX/MIN 99.7/72.3
7/3/2012 7:00 AM 0.00 0.0 M M M YSTD MAX/MIN 94.3/71.5
7/4/2012 7:00 AM 0.00 0.0 M M M
7/5/2012 7:00 AM 0.00 0.0 M M M Thunder heard at approx. 2 a.m. YSTD MAX/MIN 98.0/72.7
7/6/2012 7:00 AM 0.00 0.0 M M M
7/7/2012 7:00 AM 0.00 0.0 M M M MAX/MIN for YSTD 99.7/77.7
7/8/2012 7:00 AM 0.00 0.0 M M M YSTD MAX/MIN 104.1/76.7. This morning's MIN 78.5
7/13/2012 7:00 AM 0.00 0.0 M M M
7/14/2012 7:00 AM T M M M M Pre-dawn sprinkles. YSTD MAX/MIN 89.9/68.4
7/20/2012 7:00 AM 0.29 M M M M TRW 2320-2359 with CCCG LHTN. YSTD Max/Min 97/74
7/21/2012 7:00 AM 0.02 M M M M July 20, 2012 SH 0910-0915. Sprinkles at this morning's obs.
7/22/2012 7:00 AM 0.12 M M M M INTMT DZ During Most of July 21, 2012, with INTMT DZ CONT UNTIL APPROX 0325 HOURS July 22, 2012. YSTD MAX/MIN 71/67
7/23/2012 7:00 AM 0.00 0.0 M M M
7/24/2012 6:00 AM 0.00 0.0 M M M
7/25/2012 6:00 AM 0.00 0.0 M M M
7/26/2012 7:00 AM 0.00 0.0 M M M
7/27/2012 7:00 AM 0.02 M M M M
7/28/2012 7:00 AM 0.00 0.0 M M M
7/29/2012 7:00 AM 0.32 M M M M Rain occurred between 1820 and 1920. I was not at home to observe what type of conditions produced the precipitation.
7/30/2012 7:00 AM 0.00 0.0 M M M
7/31/2012 7:00 AM 0.00 0.0 M M M
8/1/2012 7:00 AM 0.06 M M M M
8/2/2012 6:00 AM 0.00 0.0 M M M
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 7:00 AM 0.00 0.0 M M M
8/6/2012 7:00 AM 0.03 M M M M Thunder heard at 1807 hours w/ --SH / sprinkles at 1900 to 2000. T of precip fell just before this report.
8/7/2012 7:00 AM 0.01 M M M M -SH CONT BRF AFT YSTD OBS
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 FG @ OBS
8/10/2012 7:00 AM 0.08 M M M M -rain at obs
8/11/2012 7:00 AM 2.44 M M M M 2.39 inches fell 8/10/1012 morning see times below. Heaviest pcpn was from 7:35 a.m. to 8:40 a.m. when 2.34 inches fell. On 8/11/1012 .05 fell between 3:30 and 4 a.m. with .01 of that amt falling at approxi 6:25 a.m. Four separate rain gauges were used to corroborate the total precip during the time periods noted.
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 7:00 AM T M M M M Sprinkles before dawn. YSTD Max/Min 89/65
8/15/2012 7:00 AM 0.02 M M M M -SHRA @ approx. 2225-2230. YTSD MAX/MIN 89/73
8/16/2012 7:00 AM 0.00 0.0 M M M YTSTD Max/Min 86/68
8/17/2012 7:00 AM 0.00 0.0 M M M YSTD Max/Min 89/64
8/18/2012 7:00 AM 0.03 M M M M -SHRA 0015-0020 and 0115-0125 approx. YSTD Max/Min 90/66
8/19/2012 7:00 AM 0.00 0.0 M M M YSTD Max/Min 86/66
8/20/2012 6:00 AM 0.03 M M M M -SHRAs on 8/19/2012 YSTD Max/Min76/64
8/21/2012 7:00 AM 0.29 M M M M SHRA 1905-1955 (0.26) with intermt showers thereafter. YSTD Max/Min 81/65
8/22/2012 6:00 AM 0.00 0.0 M M M YSTD Max/Min 85/64
8/23/2012 7:00 AM 0.00 0.0 M M M YTSD Max/Min 85/63
8/24/2012 7:00 AM 0.00 0.0 M M M YSTD Max/Min 88/65
8/25/2012 7:00 AM 0.00 0.0 M M M YSTD Max/Min 87/66
8/26/2012 7:00 AM 0.30 M M M M YSTD Max/Min 77/68
8/27/2012 5:00 AM 0.14 M M M M TRW w/ CCCG Ligntning beginning 1145. Torando Warning issued from about 1145-1230 for lower Charles County. Addional -SHRA in evening. YTSD Max/Min 81.8/68.3
8/28/2012 7:00 AM T M M M M YSTD Max/Min 88.4/66.9
8/29/2012 7:00 AM T M M M M YSTD Max/Min 90.5/67.4
8/30/2012 7:00 AM 0.00 0.0 M M M YSTD Max/Min 86.3/64.8
8/31/2012 6:00 AM 0.00 0.0 M M M YSTD Max/Min 88.6/63.4
9/1/2012 7:00 AM 0.00 0.0 M M M YSTD Max/Min 95/70
9/2/2012 7:00 AM 0.03 M M M M YSTD Max/Min 92.7/71.1. TRW last evening with thunder and CC lightning. 0.02 precip fell between 2245-2255. 0.01 fell @ approx 0330
9/3/2012 7:00 AM 0.01 M M M M Sprinkle in AFTN YSTD Max/Min 84.1/71.3
9/4/2012 7:00 AM 0.08 M M M M SHRA AFT MDNT. YSTD MAX/MIN 84/72
9/5/2012 6:00 AM 0.38 M M M M +SHRA early aftn. YSTD Max/Min 89.9/71.6
9/6/2012 7:00 AM 0.01 M M M M -SHRA 1320-1340 YSTD Max/Min 87.0/75.1
9/7/2012 7:00 AM 0.22 M M M M Light to moderate rain from approx. 9:50 a.m. to 12:10 p.m. YSTD Max/Min 83/69
9/8/2012 7:00 AM 0.00 0.0 M M M YSTD Max/Min 87.6/65.5
9/9/2012 7:00 AM 0.63 M M M M +TRW 1620-1705 FROPA Temp dropped 22 degrees from 1610-1700. YSTD max/min 89.9/64.0
9/10/2012 7:00 AM 0.00 0.0 M M M YSTD MAX/MIN 79.9/57.5
9/11/2012 6:00 AM 0.00 0.0 M M M YSTD MAX/MIN 76.0/55.6 This morning's low so far is 50.2°
9/12/2012 7:00 AM 0.00 0.0 M M M YSTD Max/Min 77.6/49.2
9/13/2012 7:00 AM 0.00 0.0 M M M YSTD Max/Min 79.9/50.5
9/14/2012 7:00 AM 0.00 0.0 M M M YSTD Max/Min 82.0/52.5
9/15/2012 7:00 AM 0.00 0.0 M M M YSTD Max/Min 82.6/55.6
9/16/2012 7:00 AM 0.00 0.0 M M M YSTD Max/Min 77.4/55.7
9/17/2012 7:00 AM 0.00 0.0 M M M YSTD Max/Min 77.6/52.2
9/18/2012 7:00 AM 0.34 M M M M Main SHRA between 2325-0030 dropped 0.27 inch of rain. YSTD Max/Min73.7/50.2
9/19/2012 7:00 AM 0.74 M M M M Heavy rain during T-Storm and Torando Warning in AFT. No thunder heard or lightning observed. 41 mph PWG at 1455 from the SSW. YSTD Max/Min 78.5/65.6
9/20/2012 7:00 AM 0.00 0.0 M M M YSTD Max/Min 70.8/52.0
9/21/2012 7:00 AM 0.00 0.0 M M M YSTD Max/Min 75.8/47.4
9/22/2012 7:00 AM 0.00 0.0 M M M
9/23/2012 7:00 AM 0.06 M M M M
9/28/2012 7:00 AM 0.35 M M M M TRW AFT MDNGT W/ CC LGT
9/29/2012 7:00 AM 0.35 M M M M
9/30/2012 7:00 AM 0.00 0.0 M M M



Start Date End Date & Time Duration in Days Precipitation Snow Depth Snow Depth SWE Notes
11/17/2011 11/18/2011 12:00 AM 2 0.96 M M
11/22/2011 11/23/2011 11:59 PM 2 1.06 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