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 19 3.59 5.55 10 5.55 10 0.00 0 0 10 0 0.0 0 0
Nov 19 3.27 1.79 7 1.79 7 0.00 0 0 7 0 0.0 0 0
Dec 19 3.40 3.95 12 3.95 12 0.00 0 0 11 0 0.5 1 0
Jan 20 3.19 2.45 10 2.45 10 0.00 0 0 10 0 0.3 1 1
Feb 20 2.92 3.26 15 3.26 15 0.00 0 0 15 0 0.0 0 0
March 20 4.22 2.56 12 2.56 12 0.00 0 0 12 0 0.0 0 0
April 20 3.44 3.08 13 3.08 13 0.00 0 0 13 0 0.0 0 0
May 20 4.02 3.38 11 3.38 11 0.00 0 0 11 0 0.0 0 0
June 20 3.93 3.87 8 3.87 8 0.00 0 0 8 0 0.0 0 0
July 20 4.13 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
Aug 20 3.94 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
Sept 20 3.84 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
Water Year Totals: 43.89" 29.89" 98 days 29.89" 98 0.00" 0 days 0 97 days 0 days 0.8" 2 days 1 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
10/1/2019
10/2/2019
10/3/2019
10/4/2019
10/5/2019
10/6/2019
10/7/2019
10/8/2019 0.42
10/9/2019
10/10/2019
10/11/2019
10/12/2019
10/13/2019
10/14/2019 0.19
10/15/2019
10/16/2019
10/17/2019 1.39
10/18/2019
10/19/2019
10/20/2019 0.35
10/21/2019 2.11
10/22/2019 0.01
10/23/2019 0.43
10/24/2019
10/25/2019
10/26/2019
10/27/2019 0.11
10/28/2019 0.48
10/29/2019
10/30/2019
10/31/2019 0.06
11/1/2019 0.48
11/2/2019
11/3/2019
11/4/2019
11/5/2019
11/6/2019
11/7/2019
11/8/2019 0.08
11/9/2019
11/10/2019
11/11/2019
11/12/2019
11/13/2019 0.39
11/14/2019
11/15/2019 0.03
11/16/2019
11/17/2019
11/18/2019
11/19/2019 0.04
11/20/2019
11/21/2019
11/22/2019
11/23/2019
11/24/2019 0.75
11/25/2019
11/26/2019
11/27/2019 0.02
11/28/2019
11/29/2019
11/30/2019
12/1/2019 0.22
12/2/2019 0.52
12/3/2019
12/4/2019 0.00
12/5/2019
12/6/2019
12/7/2019
12/8/2019
12/9/2019 0.55
12/10/2019 0.05
12/11/2019 0.53
12/12/2019
12/13/2019
12/14/2019 1.19
12/15/2019 0.02
12/16/2019 0.08
12/17/2019 0.02
12/18/2019 0.31
12/19/2019
12/20/2019
12/21/2019
12/22/2019
12/23/2019
12/24/2019
12/25/2019
12/26/2019
12/27/2019
12/28/2019
12/29/2019
12/30/2019 0.46
12/31/2019
Day of YearDaily PrcpMultiday Prcp
1/1/2020
1/2/2020
1/3/2020 0.20
1/4/2020 0.17
1/5/2020 0.33
1/6/2020
1/7/2020
1/8/2020 0.45
1/9/2020
1/10/2020
1/11/2020
1/12/2020
1/13/2020
1/14/2020 0.20
1/15/2020 0.09
1/16/2020
1/17/2020
1/18/2020 0.03
1/19/2020 0.17
1/20/2020
1/21/2020
1/22/2020
1/23/2020
1/24/2020
1/25/2020 0.78
1/26/2020 0.03
1/27/2020
1/28/2020
1/29/2020
1/30/2020
1/31/2020
2/1/2020 0.05
2/2/2020 0.03
2/3/2020
2/4/2020 0.04
2/5/2020 0.03
2/6/2020 0.29
2/7/2020 1.37
2/8/2020 0.09
2/9/2020
2/10/2020
2/11/2020 0.48
2/12/2020 0.26
2/13/2020 0.14
2/14/2020 0.07
2/15/2020
2/16/2020
2/17/2020
2/18/2020
2/19/2020 0.03
2/20/2020
2/21/2020
2/22/2020
2/23/2020
2/24/2020
2/25/2020 0.25
2/26/2020 0.08
2/27/2020 0.05
2/28/2020
2/29/2020
3/1/2020
3/2/2020
3/3/2020
3/4/2020
3/5/2020
3/6/2020 0.07
3/7/2020 0.30
3/8/2020
3/9/2020
3/10/2020
3/11/2020
3/12/2020
3/13/2020 0.19
3/14/2020
3/15/2020 0.03
3/16/2020
3/17/2020
3/18/2020
3/19/2020 0.29
3/20/2020
3/21/2020 0.28
3/22/2020
3/23/2020 0.48
3/24/2020 0.16
3/25/2020 0.12
3/26/2020 0.37
3/27/2020
3/28/2020 0.20
3/29/2020 0.07
3/30/2020
3/31/2020
Day of YearDaily PrcpMultiday Prcp
4/1/2020 0.16
4/2/2020
4/3/2020
4/4/2020
4/5/2020
4/6/2020
4/7/2020
4/8/2020 0.18
4/9/2020
4/10/2020
4/11/2020
4/12/2020
4/13/2020 0.67
4/14/2020 0.20
4/15/2020 0.13
4/16/2020
4/17/2020
4/18/2020 0.02
4/19/2020 0.13
4/20/2020 0.09
4/21/2020 0.12
4/22/2020
4/23/2020
4/24/2020 0.74
4/25/2020 0.15
4/26/2020 0.45
4/27/2020 0.04
4/28/2020
4/29/2020
4/30/2020
5/1/2020 1.21
5/2/2020 0.34
5/3/2020
5/4/2020 0.25
5/5/2020
5/6/2020 0.08
5/7/2020 0.13
5/8/2020
5/9/2020 0.22
5/10/2020
5/11/2020
5/12/2020
5/13/2020
5/14/2020
5/15/2020
5/16/2020
5/17/2020
5/18/2020
5/19/2020 0.06
5/20/2020
5/21/2020
5/22/2020 0.54
5/23/2020 0.07
5/24/2020
5/25/2020
5/26/2020
5/27/2020
5/28/2020 0.29
5/29/2020 0.19
5/30/2020
5/31/2020
6/1/2020
6/2/2020
6/3/2020
6/4/2020
6/5/2020
6/6/2020 0.13
6/7/2020
6/8/2020
6/9/2020
6/10/2020
6/11/2020
6/12/2020 1.28
6/13/2020
6/14/2020
6/15/2020
6/16/2020
6/17/2020 0.08
6/18/2020 0.65
6/19/2020
6/20/2020 0.03
6/21/2020 0.22
6/22/2020
6/23/2020 0.76
6/24/2020
6/25/2020
6/26/2020 0.72
6/27/2020
6/28/2020
6/29/2020
6/30/2020
Day of YearDaily PrcpMultiday Prcp
7/1/2020
7/2/2020
7/3/2020
7/4/2020
7/5/2020
7/6/2020
7/7/2020
7/8/2020
7/9/2020
7/10/2020
7/11/2020
7/12/2020
7/13/2020
7/14/2020
7/15/2020
7/16/2020
7/17/2020
7/18/2020
7/19/2020
7/20/2020
7/21/2020
7/22/2020
7/23/2020
7/24/2020
7/25/2020
7/26/2020
7/27/2020
7/28/2020
7/29/2020
7/30/2020
7/31/2020
8/1/2020
8/2/2020
8/3/2020
8/4/2020
8/5/2020
8/6/2020
8/7/2020
8/8/2020
8/9/2020
8/10/2020
8/11/2020
8/12/2020
8/13/2020
8/14/2020
8/15/2020
8/16/2020
8/17/2020
8/18/2020
8/19/2020
8/20/2020
8/21/2020
8/22/2020
8/23/2020
8/24/2020
8/25/2020
8/26/2020
8/27/2020
8/28/2020
8/29/2020
8/30/2020
8/31/2020
9/1/2020
9/2/2020
9/3/2020
9/4/2020
9/5/2020
9/6/2020
9/7/2020
9/8/2020
9/9/2020
9/10/2020
9/11/2020
9/12/2020
9/13/2020
9/14/2020
9/15/2020
9/16/2020
9/17/2020
9/18/2020
9/19/2020
9/20/2020
9/21/2020
9/22/2020
9/23/2020
9/24/2020
9/25/2020
9/26/2020
9/27/2020
9/28/2020
9/29/2020
9/30/2020



Observation Date Observation Time Precipitation Snowfall Snowfall SWE Snow Depth Snow SWE Notes
10/8/2019 9:00 AM 0.42 M M M M
10/14/2019 3:30 PM 0.19 M M M M
10/17/2019 9:00 AM 1.39 M M M M
10/20/2019 8:40 AM 0.35 M M M M RA continuing at Obs. Time
10/21/2019 8:00 AM 2.11 M M M M Event total precipitation: 2.46".
10/22/2019 8:00 AM 0.01 M M M M Dz and -RA at Obs. Time.
10/23/2019 7:00 AM 0.43 M M M M
10/27/2019 9:40 AM 0.11 M M M M RA and some thunder at report time [1125].
10/28/2019 9:00 AM 0.48 M M M M
10/31/2019 9:10 AM 0.06 M M M M
11/1/2019 7:00 AM 0.48 M M M M
11/8/2019 7:00 AM 0.08 M M M M
11/13/2019 7:00 AM 0.39 M M M M Precip. changed to -RA and mixed SN near end in PM.
11/15/2019 8:00 AM 0.03 M M M M
11/19/2019 8:00 AM 0.04 M M M M
11/24/2019 9:00 AM 0.75 M M M M
11/27/2019 10:10 AM 0.02 M M M M Dz;-RA at Obs. Time
12/1/2019 9:45 AM 0.22 M M M M Majority of RA after midnight.
12/2/2019 8:00 AM 0.52 M M M M
12/4/2019 7:30 AM 0.00 0.0 M M M
12/9/2019 8:00 AM 0.55 M M M M
12/10/2019 8:10 AM 0.05 M M M M
12/11/2019 9:00 AM 0.53 0.5 0.45 M M -SN near end of precipitation.
12/14/2019 9:15 AM 1.19 M M M M
12/15/2019 9:30 AM 0.02 M M M M
12/16/2019 9:45 AM 0.08 M M M M
12/17/2019 10:30 AM 0.02 M M M M
12/18/2019 2:00 PM 0.31 M M M M
12/30/2019 7:30 AM 0.46 M M M M Most of precipitation before midnight of 29th.
1/3/2020 9:30 AM 0.20 M M M M
1/4/2020 9:06 AM 0.17 M M M M
1/5/2020 9:00 AM 0.33 M M M M
1/8/2020 7:00 AM 0.45 M M M M
1/14/2020 9:00 AM 0.20 M M M M
1/15/2020 8:00 AM 0.09 M M M M Moderate fog overnight and until early AM.
1/18/2020 9:00 AM 0.03 0.3 0.03 0.3 0.03
1/19/2020 8:30 AM 0.17 0.0 M 0.0 M
1/25/2020 9:10 AM 0.78 M M M M RA with some periods of +RA started after midnight; -RA continuing at report time.
1/26/2020 8:00 AM 0.03 M M M M
2/1/2020 7:00 AM 0.05 M M M M
2/2/2020 9:00 AM 0.03 M M M M
2/4/2020 9:15 AM 0.04 M M M M Very -RA at Obs. Time.
2/5/2020 7:45 AM 0.03 M M M M -RA at report time.
2/6/2020 8:50 AM 0.29 M M M M -RA continuing at report time.
2/7/2020 8:00 AM 1.37 M M M M
2/8/2020 7:00 AM 0.09 M M M M
2/11/2020 9:15 AM 0.48 M M M M -RA at Obs. Time, continuing.
2/12/2020 8:00 AM 0.26 M M M M
2/13/2020 9:10 AM 0.14 M M M M -RA continuing at report time [1023].
2/14/2020 7:00 AM 0.07 M M M M
2/19/2020 7:30 AM 0.03 M M M M
2/25/2020 9:20 AM 0.25 M M M M -RA and periods of RA continuing at report time.
2/26/2020 8:00 AM 0.08 M M M M
2/27/2020 8:00 AM 0.05 M M M M
3/6/2020 8:30 AM 0.07 M M M M RA continuing at Report Time.
3/7/2020 8:30 AM 0.30 M M M M
3/13/2020 8:50 AM 0.19 M M M M Few drops of RA at Report Time.
3/15/2020 8:20 AM 0.03 M M M M
3/19/2020 9:00 AM 0.29 M M M M Clouds clearing at report time.
3/21/2020 8:30 AM 0.28 M M M M -RA continues at report time.
3/23/2020 8:30 AM 0.48 M M M M -RA at Obs. and Report Times.
3/24/2020 8:00 AM 0.16 M M M M
3/25/2020 7:45 AM 0.12 M M M M -RA continuing at report time.
3/26/2020 8:00 AM 0.37 M M M M
3/28/2020 7:10 AM 0.20 M M M M -RA at Obs. Time. TS after midnight.
3/29/2020 7:00 AM 0.07 M M M M
4/1/2020 6:55 AM 0.16 M M M M
4/8/2020 7:15 AM 0.18 M M M M TS afternoon of 4/7; some heavy downpours.
4/13/2020 9:00 AM 0.67 M M M M TS after midnight; not close. Some periods of +RA.
4/14/2020 9:00 AM 0.20 M M M M Very windy most of 4/13.
4/15/2020 7:30 AM 0.13 M M M M
4/18/2020 8:00 AM 0.02 M M M M -RA continuing at report time.
4/19/2020 7:00 AM 0.13 M M M M
4/20/2020 9:20 AM 0.09 M M M M -RA continuing at report time.
4/21/2020 7:00 AM 0.12 M M M M
4/24/2020 7:45 AM 0.74 M M M M
4/25/2020 7:00 AM 0.15 M M M M
4/26/2020 9:00 AM 0.45 M M M M Light TS after midnight.
4/27/2020 8:00 AM 0.04 M M M M
5/1/2020 7:30 AM 1.21 M M M M -RA at Obs. Time. 0.7" RA between approx 1200 and 1445 on 4/30.
5/2/2020 7:00 AM 0.34 M M M M
5/4/2020 7:00 AM 0.25 M M M M Periods of +RA after midnight.
5/6/2020 7:15 AM 0.08 M M M M
5/7/2020 9:00 AM 0.13 M M M M
5/9/2020 7:00 AM 0.22 M M M M
5/19/2020 9:30 AM 0.06 M M M M
5/22/2020 8:15 AM 0.54 M M M M
5/23/2020 7:45 AM 0.07 M M M M
5/28/2020 9:00 AM 0.29 M M M M
5/29/2020 8:30 AM 0.19 M M M M
6/6/2020 8:00 AM 0.13 M M M M
6/12/2020 7:00 AM 1.28 M M M M Several periods of +RA during late PM of 6/11. Some thunder.
6/17/2020 8:00 AM 0.08 M M M M
6/18/2020 7:10 AM 0.65 M M M M Some hvy downpours and TS in pm.
6/20/2020 7:00 AM 0.03 M M M M
6/21/2020 7:30 AM 0.22 M M M M
6/23/2020 7:00 AM 0.76 M M M M TS with hvy downpours in late afternoon.
6/26/2020 9:00 AM 0.72 0.0 M M M



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