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 14 3.59 3.61 11 3.61 11 0.00 0 0 10 1 0.0 0 0
Nov 14 3.27 2.63 13 2.63 13 0.00 0 0 12 1 0.0 0 0
Dec 14 3.40 3.24 12 3.24 12 0.00 0 0 12 0 0.0 0 0
Jan 15 3.19 4.19 14 4.19 14 0.00 0 0 13 1 1.5 2 2
Feb 15 2.92 3.15 9 3.15 9 0.00 0 0 9 0 10.8 4 1
March 15 4.22 3.29 13 3.29 13 0.00 0 0 13 0 4.5 1 0
April 15 3.44 4.07 12 4.07 12 0.00 0 0 11 1 0.0 0 0
May 15 4.02 1.78 8 1.78 8 0.00 0 0 8 0 0.0 0 0
June 15 3.93 10.64 17 10.64 17 0.00 0 0 17 0 0.0 0 0
July 15 4.13 4.16 14 4.16 14 0.00 0 0 14 0 0.0 0 0
Aug 15 3.94 3.37 7 3.37 7 0.00 0 0 7 0 0.0 0 0
Sept 15 3.84 2.31 7 2.31 7 0.00 0 0 7 0 0.0 0 0
Water Year Totals: 43.89" 46.44" 137 days 46.44" 137 0.00" 0 days 0 133 days 4 days 16.8" 7 days 3 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
10/1/2014
10/2/2014
10/3/2014
10/4/2014 0.06
10/5/2014
10/6/2014
10/7/2014
10/8/2014 0.03
10/9/2014
10/10/2014
10/11/2014 0.53
10/12/2014 0.11
10/13/2014 0.08
10/14/2014 0.01
10/15/2014 T
10/16/2014 1.43
10/17/2014
10/18/2014
10/19/2014
10/20/2014
10/21/2014 0.01
10/22/2014 0.38
10/23/2014 0.97
10/24/2014
10/25/2014
10/26/2014
10/27/2014
10/28/2014
10/29/2014
10/30/2014
10/31/2014
11/1/2014 0.01
11/2/2014 0.09
11/3/2014
11/4/2014
11/5/2014
11/6/2014 0.06
11/7/2014 0.17
11/8/2014
11/9/2014
11/10/2014
11/11/2014
11/12/2014 T
11/13/2014
11/14/2014 0.10
11/15/2014
11/16/2014
11/17/2014 0.15
11/18/2014 0.84
11/19/2014
11/20/2014
11/21/2014
11/22/2014
11/23/2014
11/24/2014 0.25
11/25/2014 0.01
11/26/2014 0.36
11/27/2014 0.56
11/28/2014 0.03
11/29/2014
11/30/2014
12/1/2014
12/2/2014 0.15
12/3/2014 0.02
12/4/2014
12/5/2014 0.04
12/6/2014
12/7/2014 0.59
12/8/2014
12/9/2014 0.06
12/10/2014 0.12
12/11/2014
12/12/2014
12/13/2014
12/14/2014
12/15/2014
12/16/2014
12/17/2014 0.41
12/18/2014
12/19/2014
12/20/2014
12/21/2014
12/22/2014
12/23/2014 0.18
12/24/2014 0.87
12/25/2014 0.70
12/26/2014
12/27/2014
12/28/2014
12/29/2014 0.04
12/30/2014 0.06
12/31/2014
Day of YearDaily PrcpMultiday Prcp
1/1/2015
1/2/2015
1/3/2015 0.01
1/4/2015 0.12
1/5/2015 T
1/6/2015
1/7/2015
1/8/2015
1/9/2015
1/10/2015
1/11/2015
1/12/2015 0.08
1/13/2015 1.01
1/14/2015 0.19
1/15/2015
1/16/2015
1/17/2015
1/18/2015 0.20
1/19/2015 1.24
1/20/2015
1/21/2015
1/22/2015 0.04
1/23/2015
1/24/2015 1.14
1/25/2015 0.05
1/26/2015 0.04
1/27/2015 0.06
1/28/2015
1/29/2015
1/30/2015 0.01
1/31/2015
2/1/2015
2/2/2015 0.08
2/3/2015 0.56
2/4/2015
2/5/2015
2/6/2015
2/7/2015
2/8/2015
2/9/2015
2/10/2015 0.26
2/11/2015
2/12/2015
2/13/2015 0.04
2/14/2015
2/15/2015
2/16/2015
2/17/2015 0.88
2/18/2015
2/19/2015 0.02
2/20/2015
2/21/2015
2/22/2015 1.09
2/23/2015
2/24/2015
2/25/2015
2/26/2015 0.19
2/27/2015 0.03
2/28/2015
3/1/2015
3/2/2015 0.42
3/3/2015
3/4/2015 0.03
3/5/2015 0.26
3/6/2015 0.87
3/7/2015
3/8/2015
3/9/2015
3/10/2015
3/11/2015 0.07
3/12/2015 0.04
3/13/2015
3/14/2015 0.33
3/15/2015 0.52
3/16/2015
3/17/2015
3/18/2015
3/19/2015
3/20/2015 0.17
3/21/2015 0.18
3/22/2015
3/23/2015
3/24/2015
3/25/2015
3/26/2015
3/27/2015 0.12
3/28/2015 0.27
3/29/2015
3/30/2015 0.01
3/31/2015
Day of YearDaily PrcpMultiday Prcp
4/1/2015 0.02
4/2/2015
4/3/2015
4/4/2015 0.07
4/5/2015
4/6/2015
4/7/2015
4/8/2015 0.03
4/9/2015 0.15
4/10/2015 0.02
4/11/2015 0.03
4/12/2015
4/13/2015
4/14/2015 T
4/15/2015 1.02
4/16/2015
4/17/2015 0.09
4/18/2015 0.01
4/19/2015
4/20/2015 2.38
4/21/2015
4/22/2015
4/23/2015
4/24/2015
4/25/2015
4/26/2015 0.25
4/27/2015
4/28/2015
4/29/2015
4/30/2015
5/1/2015 0.13
5/2/2015 0.01
5/3/2015
5/4/2015
5/5/2015
5/6/2015 0.02
5/7/2015
5/8/2015
5/9/2015
5/10/2015
5/11/2015
5/12/2015 0.03
5/13/2015
5/14/2015
5/15/2015
5/16/2015
5/17/2015 0.64
5/18/2015 0.01
5/19/2015 0.39
5/20/2015
5/21/2015
5/22/2015 0.55
5/23/2015
5/24/2015
5/25/2015
5/26/2015
5/27/2015
5/28/2015
5/29/2015
5/30/2015
5/31/2015
6/1/2015
6/2/2015 2.17
6/3/2015 0.28
6/4/2015 0.11
6/5/2015 0.82
6/6/2015 0.01
6/7/2015
6/8/2015
6/9/2015 0.16
6/10/2015
6/11/2015
6/12/2015
6/13/2015
6/14/2015 0.38
6/15/2015 0.55
6/16/2015 0.56
6/17/2015 0.03
6/18/2015 0.25
6/19/2015 0.75
6/20/2015
6/21/2015 1.09
6/22/2015
6/23/2015
6/24/2015 0.91
6/25/2015
6/26/2015 0.57
6/27/2015 0.31
6/28/2015 1.69
6/29/2015
6/30/2015
Day of YearDaily PrcpMultiday Prcp
7/1/2015 0.12
7/2/2015 0.01
7/3/2015
7/4/2015 0.03
7/5/2015 0.84
7/6/2015 0.02
7/7/2015 0.10
7/8/2015
7/9/2015
7/10/2015
7/11/2015 0.62
7/12/2015 0.55
7/13/2015
7/14/2015 0.08
7/15/2015
7/16/2015 0.59
7/17/2015
7/18/2015
7/19/2015
7/20/2015
7/21/2015
7/22/2015
7/23/2015
7/24/2015
7/25/2015
7/26/2015
7/27/2015 0.27
7/28/2015 0.02
7/29/2015
7/30/2015 0.11
7/31/2015 0.80
8/1/2015
8/2/2015
8/3/2015
8/4/2015
8/5/2015
8/6/2015
8/7/2015 1.78
8/8/2015 0.03
8/9/2015
8/10/2015
8/11/2015 0.89
8/12/2015 0.57
8/13/2015
8/14/2015
8/15/2015
8/16/2015
8/17/2015
8/18/2015
8/19/2015 0.04
8/20/2015
8/21/2015 0.04
8/22/2015
8/23/2015
8/24/2015
8/25/2015
8/26/2015 0.02
8/27/2015
8/28/2015
8/29/2015
8/30/2015
8/31/2015
9/1/2015
9/2/2015
9/3/2015 0.04
9/4/2015
9/5/2015
9/6/2015
9/7/2015
9/8/2015
9/9/2015
9/10/2015
9/11/2015 0.14
9/12/2015
9/13/2015 0.76
9/14/2015 0.01
9/15/2015
9/16/2015
9/17/2015
9/18/2015
9/19/2015
9/20/2015
9/21/2015
9/22/2015
9/23/2015
9/24/2015
9/25/2015
9/26/2015 0.11
9/27/2015 0.01
9/28/2015
9/29/2015
9/30/2015 1.24



Observation Date Observation Time Precipitation Snowfall Snowfall SWE Snow Depth Snow SWE Notes
10/4/2014 8:00 AM 0.06 M M M M RA after midnight.
10/8/2014 7:30 AM 0.03 M M M M
10/11/2014 8:00 AM 0.53 M M M M Periods of +RA after midnight; RA continuing at Obs. Time.
10/12/2014 8:00 AM 0.11 M M M M
10/13/2014 8:15 AM 0.08 M M M M -RA after midnight; continues at report time [0902].
10/14/2014 7:00 AM 0.01 M M M M
10/15/2014 7:00 AM T M M M M
10/16/2014 7:00 AM 1.43 M M M M RA with few heavy downpours, began approx. 1400.
10/21/2014 8:00 AM 0.01 M M M M
10/22/2014 8:15 AM 0.38 M M M M RA with some heavy downpours, began approx. 0700. Continues at Obs. Time.
10/23/2014 7:30 AM 0.97 M M M M RA with some short periods of heavy downpours most of the day.
11/1/2014 7:30 AM 0.01 M M M M
11/2/2014 7:00 AM 0.09 M M M M
11/6/2014 7:50 AM 0.06 M M M M -RA continuing at report time [0835].
11/7/2014 7:00 AM 0.17 M M M M
11/12/2014 7:00 AM T M M M M Fog.
11/14/2014 7:00 AM 0.10 M M M M
11/17/2014 7:30 AM 0.15 M M M M
11/18/2014 7:00 AM 0.84 M M M M RA most of the day; fog, early AM; some rain after midnight on 18th.
11/24/2014 7:00 AM 0.25 M M M M RA after midnight; gusty winds.
11/25/2014 7:00 AM 0.01 M M M M
11/26/2014 7:30 AM 0.36 M M M M Most RA after midnight; continuing at report time [0820].
11/27/2014 7:00 AM 0.56 M M M M Most RA ended by 2100.
11/28/2014 7:00 AM 0.03 M M M M
12/2/2014 7:30 AM 0.15 M M M M
12/3/2014 7:15 AM 0.02 M M M M
12/5/2014 7:30 AM 0.04 M M M M Shower after midnight.
12/7/2014 7:30 AM 0.59 M M M M
12/9/2014 7:40 AM 0.06 M M M M
12/10/2014 7:00 AM 0.12 M M M M
12/17/2014 7:00 AM 0.41 M M M M Nealy all RA before midnight; fog at Obs. Time.
12/23/2014 8:15 AM 0.18 M M M M Fog at report time.
12/24/2014 7:30 AM 0.87 M M M M Most of RA, heavy at times, after midnight. -RA at Obs. Time.
12/25/2014 8:00 AM 0.70 M M M M RA with heavy downpours throughout the day; dense fog in early evening.
12/29/2014 7:55 AM 0.04 M M M M -RA at report time [0850].
12/30/2014 7:30 AM 0.06 M M M M
1/3/2015 8:00 AM 0.01 M M M M -RA and sleet at Obs. Time.
1/4/2015 7:50 AM 0.12 M M M M Fog at report time [0945].
1/5/2015 7:00 AM T M M M M
1/12/2015 7:15 AM 0.08 M M M M RA continuing at report time [0810].
1/13/2015 7:00 AM 1.01 M M M M
1/14/2015 7:40 AM 0.19 1.0 0.19 1.0 0.19 Sleet at Obs. time.
1/18/2015 7:15 AM 0.20 M M M M Light-to-Moderate RA continuing at report time [0815].
1/19/2015 7:00 AM 1.24 M M M M RA ended approx. 1330.
1/22/2015 8:00 AM 0.04 M M M M -SN [with sleet mixed in] began approx. 1330; changed to -RA, which ended by late afternoon.
1/24/2015 7:00 AM 1.14 M M M M
1/25/2015 7:00 AM 0.05 M M M M
1/26/2015 7:45 AM 0.04 M M M M
1/27/2015 7:00 AM 0.06 0.5 0.06 0.5 0.06
1/30/2015 7:00 AM 0.01 M M M M
2/2/2015 7:30 AM 0.08 M M M M
2/3/2015 7:00 AM 0.56 M M M M Most RA ended by 1500; several periods of moderate-to heavy-downpours.
2/10/2015 7:30 AM 0.26 M M M M RA/SL at observation time; trees and car ice covered: approx. 1/8", more or less.
2/13/2015 7:00 AM 0.04 M M M M SN between approx. 1100 and 1430; slight accumulation on grassy areas which soon melted.
2/17/2015 8:30 AM 0.88 7.5 0.88 7.5 0.88
2/19/2015 8:30 AM 0.02 0.3 0.02 M M
2/22/2015 7:00 AM 1.09 M M M M SL/IP at Obs. Time.
2/26/2015 8:15 AM 0.19 2.3 0.19 M M SN at Obs. Time and continuing at report time [0835]
2/27/2015 7:00 AM 0.03 0.7 0.03 M M SN ended approx. 1030; 3" total; 0.19" melted liquid [since observation on 2/26]
3/2/2015 9:00 AM 0.42 M M M M Freezing rain, sleet, ice pellets all day on 3/1 after 0800; most surfaces ice covered in AM on 3/2.
3/4/2015 7:00 AM 0.03 M M M M Light Sleet and Rain from about 1300 through most of PM.
3/5/2015 7:00 AM 0.26 M M M M -RA at Obs. and report [0755] times.
3/6/2015 7:30 AM 0.87 4.5 0.87 M M Sleet began approx. 1015, after -RA in AM; mostly SN by approx. 1400; ended by midnight.
3/11/2015 8:00 AM 0.07 M M M M
3/12/2015 7:00 AM 0.04 M M M M
3/14/2015 7:35 AM 0.33 M M M M RA continuing at report time [0830].
3/15/2015 7:00 AM 0.52 M M M M Most RA ended by approx. 1600.
3/20/2015 7:40 AM 0.17 M M M M RA began around or soon after midnight; continuing at report time [0822].
3/21/2015 7:00 AM 0.18 M M M M
3/27/2015 7:25 AM 0.12 M M M M
3/28/2015 7:00 AM 0.27 M M M M
3/30/2015 7:40 AM 0.01 M M M M
4/1/2015 7:00 AM 0.02 M M M M
4/4/2015 7:30 AM 0.07 M M M M
4/8/2015 7:00 AM 0.03 M M M M DZ and -RA at report time [0815].
4/9/2015 7:30 AM 0.15 M M M M
4/10/2015 6:40 AM 0.02 M M M M Fog at Obs. Time.
4/11/2015 7:00 AM 0.03 M M M M
4/14/2015 8:00 AM T M M M M
4/15/2015 7:00 AM 1.02 M M M M
4/17/2015 7:00 AM 0.09 M M M M -RA at Obs. Time.
4/18/2015 7:00 AM 0.01 M M M M
4/20/2015 7:45 AM 2.38 M M M M RA mostly after midnight, some periods of +RA. Stopped by early morning.
4/26/2015 7:15 AM 0.25 M M M M Periods of -RA and RA from approx. 1100.
5/1/2015 7:45 AM 0.13 M M M M
5/2/2015 7:00 AM 0.01 M M M M
5/6/2015 7:00 AM 0.02 M M M M
5/12/2015 7:00 AM 0.03 M M M M
5/17/2015 7:30 AM 0.64 M M M M TS began approx. 2030; RA continued past midnight.
5/18/2015 7:00 AM 0.01 M M M M
5/19/2015 7:00 AM 0.39 M M M M TS soon after midnight.
5/22/2015 7:00 AM 0.55 M M M M -RA began approx. 0730. Ended about 1600. Periods of moderate RA during the day.
6/2/2015 7:00 AM 2.17 M M M M Numerous TSs, starting about 1515.
6/3/2015 7:15 AM 0.28 M M M M
6/4/2015 7:40 AM 0.11 M M M M
6/5/2015 6:30 AM 0.82 M M M M Some heavy downpours. June total: 3.38".
6/6/2015 7:00 AM 0.01 M M M M
6/9/2015 7:45 AM 0.16 M M M M RA after midnight.
6/14/2015 7:30 AM 0.38 M M M M TS about 0230.
6/15/2015 7:00 AM 0.55 M M M M TS about 2100.
6/16/2015 7:00 AM 0.56 M M M M TS about 2000. [5.04" rain total for month so far; June 2014 total was 2.0" for entire month.]
6/17/2015 7:00 AM 0.03 M M M M
6/18/2015 7:00 AM 0.25 M M M M RA SH approx. 0200.
6/19/2015 6:30 AM 0.75 M M M M Periods of +RA between 1900-2000. Monthly RA total: 5.82".
6/21/2015 8:00 AM 1.09 M M M M Some +RA and TS about 2000; RA past midnight.
6/24/2015 7:30 AM 0.91 M M M M TS and periods of +RA from approx. 2030 to midnight.
6/26/2015 7:00 AM 0.57 M M M M RA/TS ended about midnight.
6/27/2015 7:35 AM 0.31 M M M M RA mostly after midnight. Some short periods of +RA.
6/28/2015 7:30 AM 1.69 M M M M June RA total so far: Over 10".
7/1/2015 7:30 AM 0.12 M M M M
7/2/2015 7:15 AM 0.01 M M M M
7/4/2015 7:00 AM 0.03 M M M M
7/5/2015 7:30 AM 0.84 M M M M RA started approx. 1800; some heavy downpours off and on.
7/6/2015 7:30 AM 0.02 M M M M
7/7/2015 7:30 AM 0.10 M M M M
7/11/2015 7:25 AM 0.62 M M M M RA began after midnight; continuing at report time [1000].
7/12/2015 7:00 AM 0.55 M M M M RA ended approx. 1300; event total 1.17".
7/14/2015 7:00 AM 0.08 M M M M -RA from approx. 1300-1400.
7/16/2015 7:00 AM 0.59 M M M M Relatively short periods of rain [some +RA] between approx. 2130 and midnight.
7/27/2015 7:10 AM 0.27 M M M M RA began after midnight; -RA at Obs. Time.
7/28/2015 6:30 AM 0.02 M M M M
7/30/2015 7:00 AM 0.11 M M M M RA shower from approx. 1645-1655; short period of +RA.
7/31/2015 7:30 AM 0.80 M M M M RA and periods of +RA between approx. 1700 and 1900. July RA total: 4.01"
8/7/2015 7:30 AM 1.78 M M M M RA started about 2230; periods of +RA.
8/8/2015 7:00 AM 0.03 M M M M
8/11/2015 7:40 AM 0.89 M M M M RA mostly after midnight with some periods of +RA. -RA continues at report time [0830].
8/12/2015 6:30 AM 0.57 M M M M Periods of +RA before and after midnight.
8/19/2015 7:00 AM 0.04 M M M M RA in late afternoon.
8/21/2015 7:00 AM 0.04 M M M M
8/26/2015 7:00 AM 0.02 M M M M
9/3/2015 7:00 AM 0.04 M M M M Short RA about 1500; T/S passes near.
9/11/2015 7:00 AM 0.14 M M M M
9/13/2015 8:00 AM 0.76 M M M M RA and TS between 1000 and 1130; periods of +RA.
9/14/2015 7:00 AM 0.01 M M M M
9/26/2015 7:40 AM 0.11 M M M M
9/27/2015 8:15 AM 0.01 M M M M
9/30/2015 7:30 AM 1.24 M M M M RA between approx. 1830 and 0000; periods of +RA.



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