Station Overview Station Location
Station Number MD-SM-8 Latitude 38.219722
Station Name Park Hall 0.2 SW Longitude -76.441667
County St. Mary's Elevation (ft) 75



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 15 3.59 3.34 9 3.34 9 0.00 0 0 8 1 0.0 0 0
Nov 15 3.27 4.29 11 4.29 11 0.00 0 0 11 0 0.0 0 0
Dec 15 3.40 4.78 17 4.78 17 0.00 0 0 17 0 0.0 0 0
Jan 16 3.19 2.65 7 0.60 4 2.05 3 1 4 0 9.0 3 2
Feb 16 2.92 4.62 13 4.62 13 0.00 0 0 12 1 8.5 3 3
March 16 4.22 1.22 9 1.22 9 0.00 0 0 9 0 4.0 1 0
April 16 3.44 2.40 13 2.40 13 0.00 0 0 13 0 0.0 0 0
May 16 4.02 7.58 19 7.58 19 0.00 0 0 19 0 0.0 0 0
June 16 3.93 2.39 10 2.39 10 0.00 0 0 10 0 0.0 0 0
July 16 4.13 6.38 10 6.38 10 0.00 0 0 10 0 0.0 0 0
Aug 16 3.94 2.40 8 2.40 8 0.00 0 0 8 0 0.0 0 0
Sept 16 3.84 7.19 10 7.19 10 0.00 0 0 10 0 0.0 0 0
Water Year Totals: 43.89" 49.24" 136 days 47.19" 133 2.05" 3 days 1 131 days 2 days 21.5" 7 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
10/1/2015 0.04
10/2/2015 1.01
10/3/2015 1.15
10/4/2015 0.02
10/5/2015
10/6/2015
10/7/2015
10/8/2015
10/9/2015
10/10/2015 0.65
10/11/2015
10/12/2015
10/13/2015
10/14/2015
10/15/2015
10/16/2015
10/17/2015 0.01
10/18/2015
10/19/2015
10/20/2015
10/21/2015
10/22/2015
10/23/2015
10/24/2015
10/25/2015
10/26/2015 T
10/27/2015
10/28/2015 0.12
10/29/2015 0.34
10/30/2015
10/31/2015
11/1/2015 0.05
11/2/2015 0.06
11/3/2015
11/4/2015
11/5/2015 0.03
11/6/2015
11/7/2015
11/8/2015 0.17
11/9/2015
11/10/2015 2.97
11/11/2015 0.12
11/12/2015 0.01
11/13/2015
11/14/2015
11/15/2015
11/16/2015
11/17/2015
11/18/2015
11/19/2015 0.57
11/20/2015 0.27
11/21/2015
11/22/2015
11/23/2015
11/24/2015
11/25/2015
11/26/2015
11/27/2015
11/28/2015
11/29/2015 0.01
11/30/2015 0.03
12/1/2015 0.32
12/2/2015 0.46
12/3/2015 0.09
12/4/2015
12/5/2015
12/6/2015
12/7/2015
12/8/2015
12/9/2015
12/10/2015
12/11/2015
12/12/2015
12/13/2015
12/14/2015 0.01
12/15/2015 0.06
12/16/2015
12/17/2015 0.02
12/18/2015 1.40
12/19/2015
12/20/2015
12/21/2015
12/22/2015 0.18
12/23/2015 0.28
12/24/2015 0.96
12/25/2015 0.45
12/26/2015 0.03
12/27/2015 0.01
12/28/2015 0.01
12/29/2015 0.31
12/30/2015 0.02
12/31/2015 0.17
Day of YearDaily PrcpMultiday Prcp
1/1/2016
1/2/2016
1/3/2016
1/4/2016
1/5/2016
1/6/2016
1/7/2016
1/8/2016 0.01
1/9/2016
1/10/2016 0.39
1/11/2016
1/12/2016
1/13/2016
1/14/2016
1/15/2016
1/16/2016
1/17/2016
1/18/2016 0.16
1/19/2016
1/20/2016
1/21/2016 0.04
1/22/2016 **
1/23/2016 M **
1/24/2016 M 2.05
1/25/2016
1/26/2016
1/27/2016
1/28/2016
1/29/2016
1/30/2016
1/31/2016
2/1/2016
2/2/2016 0.05
2/3/2016
2/4/2016 0.64
2/5/2016 0.53
2/6/2016
2/7/2016
2/8/2016
2/9/2016 0.06
2/10/2016 0.07
2/11/2016 T
2/12/2016
2/13/2016
2/14/2016
2/15/2016 0.46
2/16/2016 0.32
2/17/2016 0.76
2/18/2016
2/19/2016
2/20/2016
2/21/2016
2/22/2016 0.12
2/23/2016 0.13
2/24/2016 0.24
2/25/2016 1.24
2/26/2016
2/27/2016
2/28/2016
2/29/2016
3/1/2016
3/2/2016 0.10
3/3/2016
3/4/2016 0.44
3/5/2016
3/6/2016
3/7/2016
3/8/2016
3/9/2016
3/10/2016
3/11/2016
3/12/2016
3/13/2016
3/14/2016 0.05
3/15/2016 0.02
3/16/2016 0.04
3/17/2016
3/18/2016
3/19/2016
3/20/2016 0.06
3/21/2016 0.22
3/22/2016
3/23/2016
3/24/2016
3/25/2016
3/26/2016 0.01
3/27/2016
3/28/2016 0.28
3/29/2016
3/30/2016
3/31/2016
Day of YearDaily PrcpMultiday Prcp
4/1/2016 0.01
4/2/2016 0.53
4/3/2016 0.18
4/4/2016
4/5/2016 0.12
4/6/2016
4/7/2016
4/8/2016 0.47
4/9/2016 0.02
4/10/2016
4/11/2016
4/12/2016 0.19
4/13/2016 0.09
4/14/2016
4/15/2016
4/16/2016
4/17/2016
4/18/2016
4/19/2016
4/20/2016
4/21/2016
4/22/2016
4/23/2016 0.28
4/24/2016
4/25/2016
4/26/2016
4/27/2016 0.04
4/28/2016 0.30
4/29/2016 0.14
4/30/2016 0.03
5/1/2016 0.29
5/2/2016 0.37
5/3/2016 0.89
5/4/2016 0.90
5/5/2016 0.01
5/6/2016 0.37
5/7/2016 0.85
5/8/2016
5/9/2016
5/10/2016 0.30
5/11/2016 0.45
5/12/2016 0.18
5/13/2016
5/14/2016 0.08
5/15/2016 0.09
5/16/2016
5/17/2016
5/18/2016 0.26
5/19/2016
5/20/2016
5/21/2016 0.13
5/22/2016 1.21
5/23/2016 0.73
5/24/2016 0.19
5/25/2016
5/26/2016
5/27/2016
5/28/2016
5/29/2016
5/30/2016 0.07
5/31/2016 0.21
6/1/2016
6/2/2016
6/3/2016
6/4/2016
6/5/2016 0.03
6/6/2016 0.01
6/7/2016
6/8/2016 0.02
6/9/2016
6/10/2016
6/11/2016
6/12/2016
6/13/2016
6/14/2016
6/15/2016
6/16/2016
6/17/2016 0.53
6/18/2016 0.04
6/19/2016
6/20/2016
6/21/2016
6/22/2016 0.02
6/23/2016 0.20
6/24/2016 0.27
6/25/2016
6/26/2016
6/27/2016
6/28/2016 0.92
6/29/2016 0.35
6/30/2016
Day of YearDaily PrcpMultiday Prcp
7/1/2016
7/2/2016
7/3/2016 0.17
7/4/2016 0.02
7/5/2016 0.13
7/6/2016 0.04
7/7/2016
7/8/2016
7/9/2016 0.19
7/10/2016
7/11/2016
7/12/2016
7/13/2016
7/14/2016
7/15/2016
7/16/2016
7/17/2016
7/18/2016
7/19/2016 0.06
7/20/2016
7/21/2016
7/22/2016
7/23/2016
7/24/2016
7/25/2016
7/26/2016 0.85
7/27/2016 0.93
7/28/2016
7/29/2016 3.95
7/30/2016
7/31/2016 0.04
8/1/2016
8/2/2016
8/3/2016 0.16
8/4/2016
8/5/2016
8/6/2016 0.06
8/7/2016 0.08
8/8/2016
8/9/2016 0.04
8/10/2016 0.05
8/11/2016
8/12/2016
8/13/2016
8/14/2016
8/15/2016
8/16/2016 0.37
8/17/2016
8/18/2016 0.75
8/19/2016
8/20/2016
8/21/2016
8/22/2016 0.89
8/23/2016
8/24/2016
8/25/2016
8/26/2016
8/27/2016
8/28/2016
8/29/2016
8/30/2016
8/31/2016
9/1/2016
9/2/2016
9/3/2016 0.31
9/4/2016 0.10
9/5/2016
9/6/2016
9/7/2016
9/8/2016 0.31
9/9/2016
9/10/2016
9/11/2016
9/12/2016
9/13/2016
9/14/2016
9/15/2016
9/16/2016
9/17/2016
9/18/2016
9/19/2016
9/20/2016 2.96
9/21/2016 0.04
9/22/2016 0.26
9/23/2016
9/24/2016
9/25/2016
9/26/2016
9/27/2016 0.31
9/28/2016 0.29
9/29/2016 2.37
9/30/2016 0.24



Observation Date Observation Time Precipitation Snowfall Snowfall SWE Snow Depth Snow SWE Notes
10/1/2015 7:35 AM 0.04 M M M M
10/2/2015 7:10 AM 1.01 M M M M RA from before midnight, continuing at report time [0800]. Periods of +RA throughout.
10/3/2015 8:00 AM 1.15 M M M M RA continues.
10/4/2015 7:00 AM 0.02 M M M M
10/10/2015 7:30 AM 0.65 M M M M TS and RA between approx. 2000 and 2130; periods of +RA.
10/17/2015 8:00 AM 0.01 M M M M
10/26/2015 7:00 AM T M M M M
10/28/2015 6:20 AM 0.12 M M M M
10/29/2015 7:30 AM 0.34 M M M M
11/1/2015 8:25 AM 0.05 M M M M -RA continuing at Obs. Time.
11/2/2015 7:30 AM 0.06 M M M M
11/5/2015 8:30 AM 0.03 M M M M -RA around 0700; nothing at Obs. Time.
11/8/2015 8:00 AM 0.17 M M M M
11/10/2015 7:10 AM 2.97 M M M M Periods of +RA, mostly around and after midnight.
11/11/2015 6:30 AM 0.12 M M M M
11/12/2015 7:00 AM 0.01 M M M M
11/19/2015 10:00 AM 0.57 M M M M
11/20/2015 4:00 PM 0.27 M M M M
11/29/2015 8:45 AM 0.01 M M M M Intermittent -RA at report time [0855].
11/30/2015 7:45 AM 0.03 M M M M
12/1/2015 8:20 AM 0.32 M M M M RA continuing at Obs. Time
12/2/2015 7:45 AM 0.46 M M M M
12/3/2015 7:30 AM 0.09 M M M M
12/14/2015 7:10 AM 0.01 M M M M
12/15/2015 7:50 AM 0.06 M M M M
12/17/2015 8:00 AM 0.02 M M M M
12/18/2015 8:00 AM 1.40 M M M M
12/22/2015 8:20 AM 0.18 M M M M
12/23/2015 7:45 AM 0.28 M M M M
12/24/2015 7:25 AM 0.96 M M M M RA continuing at Obs. time. Thunder heard approx. 0800.
12/25/2015 7:15 AM 0.45 M M M M
12/26/2015 8:20 AM 0.03 M M M M
12/27/2015 8:00 AM 0.01 M M M M
12/28/2015 8:30 AM 0.01 M M M M
12/29/2015 7:20 AM 0.31 M M M M
12/30/2015 7:20 AM 0.02 M M M M
12/31/2015 7:15 AM 0.17 M M M M
1/8/2016 7:20 AM 0.01 M M M M
1/10/2016 8:00 AM 0.39 M M M M
1/18/2016 7:00 AM 0.16 1.0 0.16 M M SN began approx. 0800; ended by 1400.
1/21/2016 8:00 AM 0.04 1.0 0.04 1.0 M
1/23/2016 8:30 AM M 7.0 M M M Blowing snow and high winds. Unable to obtain melted snow amount.
1/24/2016 8:30 AM M M M 11.0 2.05 Liquid and SN totals cover Friday [1/22] from 1230 through storm end, late Sat[1/23].//Precip of 2.05 set to NA since a multi-day report. -SDH-
2/2/2016 7:00 AM 0.05 M M M M
2/4/2016 8:00 AM 0.64 M M M M Rain began approx. 1300; ended by midnight.
2/5/2016 7:15 AM 0.53 1.0 0.53 1.0 0.53 Sleet/snow at Obs. time. Temp. 32. Slushy.
2/9/2016 8:45 AM 0.06 M M M M
2/10/2016 7:30 AM 0.07 0.5 0.07 0.5 0.07
2/11/2016 8:00 AM T M M M M Short SN flurry in the evening.
2/15/2016 9:00 AM 0.46 7.0 0.46 7.0 0.46 SN continues at report time [0928]; Temp. 27F
2/16/2016 8:30 AM 0.32 M M M M RA at Obs. time.
2/17/2016 8:00 AM 0.76 M M M M
2/22/2016 8:00 AM 0.12 M M M M
2/23/2016 7:00 AM 0.13 M M M M Rain began after midnight; continuing at report time [0758].
2/24/2016 7:30 AM 0.24 M M M M
2/25/2016 7:00 AM 1.24 M M M M RA with some heavy downpours mostly between approx. 1900 to 2130. Gusty winds.
3/2/2016 7:00 AM 0.10 M M M M
3/4/2016 7:45 AM 0.44 4.0 0.44 M M -SN at Obs. Time
3/14/2016 8:45 AM 0.05 M M M M
3/15/2016 8:30 AM 0.02 M M M M
3/16/2016 7:00 AM 0.04 M M M M
3/20/2016 9:00 AM 0.06 M M M M
3/21/2016 8:30 AM 0.22 M M M M
3/26/2016 7:00 AM 0.01 M M M M
3/28/2016 8:00 AM 0.28 M M M M
4/1/2016 7:30 AM 0.01 M M M M
4/2/2016 7:40 AM 0.53 M M M M RA continues off and on at report time [0835]
4/3/2016 7:00 AM 0.18 M M M M RA ended approx. 1300; Vy. windy overnight.
4/5/2016 7:00 AM 0.12 M M M M Majority of the rain fell before midnight. Low T: 32 in early AM.
4/8/2016 7:00 AM 0.47 M M M M SHs and TSs throughout the day.
4/9/2016 7:00 AM 0.02 M M M M
4/12/2016 10:30 AM 0.19 M M M M Rain continuing at Obs. Time.
4/13/2016 7:00 AM 0.09 M M M M
4/23/2016 7:00 AM 0.28 M M M M TS B apporx. 1300; ended by 1430. -RA and RA off and on rest of day.
4/27/2016 6:45 AM 0.04 M M M M
4/28/2016 8:40 AM 0.30 M M M M RA continuing at Obs. Time.
4/29/2016 7:15 AM 0.14 M M M M
4/30/2016 8:00 AM 0.03 M M M M
5/1/2016 8:25 AM 0.29 M M M M -RA continuing at report time [0925].
5/2/2016 6:40 AM 0.37 M M M M -RA at Obs. Time.
5/3/2016 8:00 AM 0.89 M M M M TS w/+RA about 2200.
5/4/2016 7:10 AM 0.90 M M M M
5/5/2016 8:00 AM 0.01 M M M M
5/6/2016 7:40 AM 0.37 M M M M RA continues at report time [0845].
5/7/2016 8:00 AM 0.85 M M M M Most of the rain [0.82] was during the day of5/6. Total for May so far: 3.68.
5/10/2016 8:00 AM 0.30 M M M M
5/11/2016 8:30 AM 0.45 M M M M TSs after midnight; one with heavy thunder and lightning; periods of heavy downpours during TSs.
5/12/2016 7:45 AM 0.18 M M M M
5/14/2016 8:00 AM 0.08 M M M M
5/15/2016 7:00 AM 0.09 M M M M
5/18/2016 7:00 AM 0.26 M M M M
5/21/2016 8:00 AM 0.13 M M M M RA started around 0700; continued at report time.
5/22/2016 8:25 AM 1.21 M M M M -RA continuing at report time [0940]. May total to date is 6.38"; 2015 May total for entire month was 1.78"
5/23/2016 7:05 AM 0.73 M M M M
5/24/2016 7:00 AM 0.19 M M M M
5/30/2016 7:30 AM 0.07 M M M M
5/31/2016 7:30 AM 0.21 M M M M -RA and RA most of day [30th]. May total up to Obs. Time today: 7.58"; 2015 May total 1.78"
6/5/2016 7:55 AM 0.03 M M M M
6/6/2016 7:00 AM 0.01 M M M M
6/8/2016 7:00 AM 0.02 M M M M
6/17/2016 7:45 AM 0.53 M M M M -RA continuing at report time [0754].
6/18/2016 7:00 AM 0.04 M M M M
6/22/2016 7:00 AM 0.02 M M M M
6/23/2016 7:30 AM 0.20 M M M M Embedded TS at Obs. time.; RA continuing at Report Time [0825].
6/24/2016 7:00 AM 0.27 M M M M "Event" total: 0.47".
6/28/2016 6:35 AM 0.92 M M M M
6/29/2016 7:00 AM 0.35 M M M M TS approx. 2200.
7/3/2016 7:15 AM 0.17 M M M M -RA at Obs. Time.
7/4/2016 8:30 AM 0.02 M M M M
7/5/2016 6:50 AM 0.13 M M M M
7/6/2016 6:30 AM 0.04 M M M M
7/9/2016 7:00 AM 0.19 M M M M
7/19/2016 7:00 AM 0.06 M M M M
7/26/2016 7:00 AM 0.85 M M M M TS with periods of +RA between approx. 0000 and 0130.
7/27/2016 7:00 AM 0.93 M M M M TS with heavy downpours from approx. 1445-1600.
7/29/2016 7:30 AM 3.95 M M M M
7/31/2016 8:30 AM 0.04 M M M M
8/3/2016 7:00 AM 0.16 M M M M
8/6/2016 9:00 AM 0.06 M M M M
8/7/2016 7:00 AM 0.08 M M M M
8/9/2016 7:40 AM 0.04 M M M M
8/10/2016 7:00 AM 0.05 M M M M
8/16/2016 8:00 AM 0.37 M M M M RA and TS between approx 2200 and 0000.
8/18/2016 8:00 AM 0.75 M M M M
8/22/2016 6:50 AM 0.89 M M M M
9/3/2016 7:40 AM 0.31 M M M M
9/4/2016 7:00 AM 0.10 M M M M
9/8/2016 8:00 AM 0.31 M M M M RA and TS(2) just after midnight.
9/20/2016 7:45 AM 2.96 M M M M
9/21/2016 7:00 AM 0.04 M M M M
9/22/2016 7:00 AM 0.26 M M M M SH between approx. 1130 and 1245; included periods of moderate RA.
9/27/2016 8:40 AM 0.31 M M M M -RA began in early AM; periods of moderate RA between 0730 to 0840; RA continuing at Obs. Time.
9/28/2016 8:00 AM 0.29 M M M M -RA at Obs. Time.
9/29/2016 7:30 AM 2.37 M M M M RA most of day and night, until early AM before dawn. Rolling, mostly distant thunder, especially during evening and night.
9/30/2016 7:10 AM 0.24 M M M M -RA at Obs. Time. Approx. 3 and 1/4" RA since Tues 9/27.



Start Date End Date & Time Duration in Days Precipitation Snow Depth Snow Depth SWE Notes
1/22/2016 1/24/2016 7:00 AM 3 2.05 11.0 M Liquid and SN totals cover Friday [1/22] from 1230 through storm end, late Sat[1/23].



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