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 18 3.59 6.30 9 6.30 9 0.00 0 0 9 0 0.0 0 0
Nov 18 3.27 6.29 12 6.29 12 0.00 0 0 12 0 0.0 0 0
Dec 18 3.40 4.78 10 4.78 10 0.00 0 0 10 0 4.1 1 1
Jan 19 3.19 2.75 9 2.75 9 0.00 0 0 9 0 9.6 2 2
Feb 19 2.92 4.48 11 4.48 11 0.00 0 0 11 0 1.6 2 2
March 19 4.22 2.89 9 2.89 9 0.00 0 0 9 0 0.0 0 0
April 19 3.44 3.89 12 3.89 12 0.00 0 0 12 0 0.0 0 0
May 19 4.02 4.60 11 4.60 11 0.00 0 0 11 0 0.0 0 0
June 19 3.93 4.84 9 4.84 9 0.00 0 0 9 0 0.0 0 0
July 19 4.13 4.53 7 4.53 7 0.00 0 0 7 0 0.0 0 0
Aug 19 3.94 3.05 9 3.05 9 0.00 0 0 9 0 0.0 0 0
Sept 19 3.84 0.90 6 0.90 6 0.00 0 0 6 0 0.0 0 0
Water Year Totals: 43.89" 49.30" 114 days 49.30" 114 0.00" 0 days 0 114 days 0 days 15.3" 5 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
10/1/2018
10/2/2018
10/3/2018
10/4/2018
10/5/2018
10/6/2018
10/7/2018
10/8/2018
10/9/2018
10/10/2018
10/11/2018 0.04
10/12/2018 3.50
10/13/2018 0.01
10/14/2018
10/15/2018 0.17
10/16/2018
10/17/2018 0.13
10/18/2018
10/19/2018
10/20/2018 0.16
10/21/2018
10/22/2018
10/23/2018
10/24/2018
10/25/2018
10/26/2018
10/27/2018 2.09
10/28/2018 0.19
10/29/2018 0.01
10/30/2018
10/31/2018
11/1/2018
11/2/2018 0.01
11/3/2018 0.36
11/4/2018
11/5/2018 1.00
11/6/2018 0.04
11/7/2018 0.07
11/8/2018
11/9/2018 0.01
11/10/2018 1.00
11/11/2018
11/12/2018
11/13/2018 0.73
11/14/2018
11/15/2018 0.10
11/16/2018 0.96
11/17/2018
11/18/2018
11/19/2018
11/20/2018
11/21/2018
11/22/2018
11/23/2018
11/24/2018
11/25/2018 1.64
11/26/2018
11/27/2018 0.37
11/28/2018
11/29/2018
11/30/2018
12/1/2018
12/2/2018 0.16
12/3/2018
12/4/2018
12/5/2018
12/6/2018
12/7/2018
12/8/2018
12/9/2018
12/10/2018 0.41
12/11/2018
12/12/2018
12/13/2018
12/14/2018
12/15/2018 0.72
12/16/2018 0.91
12/17/2018 0.10
12/18/2018
12/19/2018
12/20/2018
12/21/2018 1.06
12/22/2018 0.05
12/23/2018
12/24/2018 0.02
12/25/2018
12/26/2018
12/27/2018
12/28/2018 0.44
12/29/2018 0.91
12/30/2018
12/31/2018
Day of YearDaily PrcpMultiday Prcp
1/1/2019 0.08
1/2/2019
1/3/2019 0.18
1/4/2019
1/5/2019 0.07
1/6/2019
1/7/2019
1/8/2019 0.05
1/9/2019
1/10/2019
1/11/2019
1/12/2019
1/13/2019 0.62
1/14/2019 0.65
1/15/2019
1/16/2019
1/17/2019
1/18/2019
1/19/2019
1/20/2019 0.54
1/21/2019
1/22/2019
1/23/2019
1/24/2019 0.32
1/25/2019
1/26/2019
1/27/2019
1/28/2019
1/29/2019
1/30/2019 0.24
1/31/2019
2/1/2019
2/2/2019 0.01
2/3/2019
2/4/2019
2/5/2019
2/6/2019
2/7/2019 0.01
2/8/2019
2/9/2019
2/10/2019
2/11/2019 0.38
2/12/2019 0.52
2/13/2019 0.50
2/14/2019
2/15/2019
2/16/2019 0.01
2/17/2019
2/18/2019 0.40
2/19/2019
2/20/2019 0.14
2/21/2019 1.29
2/22/2019 0.03
2/23/2019
2/24/2019 1.19
2/25/2019
2/26/2019
2/27/2019
2/28/2019
3/1/2019 0.20
3/2/2019 0.50
3/3/2019
3/4/2019 0.49
3/5/2019
3/6/2019
3/7/2019
3/8/2019
3/9/2019
3/10/2019 0.30
3/11/2019
3/12/2019
3/13/2019
3/14/2019
3/15/2019
3/16/2019
3/17/2019
3/18/2019
3/19/2019 0.02
3/20/2019
3/21/2019 0.23
3/22/2019 1.04
3/23/2019 0.10
3/24/2019
3/25/2019
3/26/2019 0.01
3/27/2019
3/28/2019
3/29/2019
3/30/2019
3/31/2019
Day of YearDaily PrcpMultiday Prcp
4/1/2019 0.02
4/2/2019
4/3/2019 0.05
4/4/2019
4/5/2019 0.01
4/6/2019 0.10
4/7/2019
4/8/2019 0.01
4/9/2019 0.86
4/10/2019
4/11/2019
4/12/2019
4/13/2019 0.15
4/14/2019 0.06
4/15/2019 0.95
4/16/2019
4/17/2019
4/18/2019
4/19/2019
4/20/2019 0.69
4/21/2019
4/22/2019
4/23/2019
4/24/2019
4/25/2019
4/26/2019 0.06
4/27/2019 0.93
4/28/2019
4/29/2019
4/30/2019
5/1/2019
5/2/2019
5/3/2019 0.02
5/4/2019
5/5/2019
5/6/2019 1.38
5/7/2019
5/8/2019
5/9/2019 0.07
5/10/2019
5/11/2019
5/12/2019 0.11
5/13/2019 1.90
5/14/2019 0.12
5/15/2019
5/16/2019
5/17/2019
5/18/2019
5/19/2019
5/20/2019
5/21/2019
5/22/2019
5/23/2019
5/24/2019 0.13
5/25/2019
5/26/2019 0.75
5/27/2019 0.07
5/28/2019 0.02
5/29/2019 0.03
5/30/2019
5/31/2019
6/1/2019
6/2/2019
6/3/2019 0.23
6/4/2019
6/5/2019
6/6/2019 0.16
6/7/2019
6/8/2019
6/9/2019 0.03
6/10/2019 0.41
6/11/2019 0.56
6/12/2019
6/13/2019 1.64
6/14/2019
6/15/2019
6/16/2019
6/17/2019
6/18/2019 1.28
6/19/2019 0.49
6/20/2019
6/21/2019 0.04
6/22/2019
6/23/2019
6/24/2019
6/25/2019
6/26/2019
6/27/2019
6/28/2019
6/29/2019
6/30/2019
Day of YearDaily PrcpMultiday Prcp
7/1/2019
7/2/2019
7/3/2019
7/4/2019
7/5/2019
7/6/2019
7/7/2019 0.48
7/8/2019 0.15
7/9/2019 2.84
7/10/2019
7/11/2019
7/12/2019 0.21
7/13/2019
7/14/2019
7/15/2019
7/16/2019
7/17/2019
7/18/2019 0.13
7/19/2019
7/20/2019
7/21/2019
7/22/2019
7/23/2019 0.33
7/24/2019 0.39
7/25/2019
7/26/2019
7/27/2019
7/28/2019
7/29/2019
7/30/2019
7/31/2019
8/1/2019 0.27
8/2/2019 1.38
8/3/2019 0.02
8/4/2019
8/5/2019
8/6/2019 0.05
8/7/2019
8/8/2019
8/9/2019
8/10/2019
8/11/2019
8/12/2019
8/13/2019
8/14/2019 0.06
8/15/2019 0.39
8/16/2019
8/17/2019
8/18/2019
8/19/2019
8/20/2019
8/21/2019 0.09
8/22/2019
8/23/2019
8/24/2019 0.76
8/25/2019
8/26/2019
8/27/2019
8/28/2019 0.03
8/29/2019
8/30/2019
8/31/2019
9/1/2019
9/2/2019
9/3/2019 0.18
9/4/2019
9/5/2019
9/6/2019 0.04
9/7/2019 0.01
9/8/2019
9/9/2019 0.09
9/10/2019
9/11/2019
9/12/2019
9/13/2019 0.49
9/14/2019
9/15/2019
9/16/2019
9/17/2019
9/18/2019 0.09
9/19/2019
9/20/2019
9/21/2019
9/22/2019
9/23/2019
9/24/2019
9/25/2019
9/26/2019
9/27/2019
9/28/2019
9/29/2019
9/30/2019



Observation Date Observation Time Precipitation Snowfall Snowfall SWE Snow Depth Snow SWE Notes
10/11/2018 7:30 AM 0.04 M M M M
10/12/2018 8:00 AM 3.50 M M M M +RA during evening and up to about midnight from TS.
10/13/2018 9:00 AM 0.01 M M M M
10/15/2018 9:00 AM 0.17 M M M M
10/17/2018 8:00 AM 0.13 M M M M
10/20/2018 9:45 AM 0.16 M M M M RA began about dawn; ended a couple hours later.
10/27/2018 9:00 AM 2.09 M M M M
10/28/2018 8:30 AM 0.19 M M M M
10/29/2018 9:00 AM 0.01 M M M M
11/2/2018 8:30 AM 0.01 M M M M
11/3/2018 9:00 AM 0.36 M M M M
11/5/2018 8:15 AM 1.00 M M M M RA with periods of +RA from after midnight. Continuing at Obs. Time.
11/6/2018 9:45 AM 0.04 M M M M
11/7/2018 7:15 AM 0.07 M M M M
11/9/2018 9:00 AM 0.01 M M M M -RA continuing at Obs. Time.
11/10/2018 8:00 AM 1.00 M M M M Periods of +RA in the afternoon.
11/13/2018 7:30 AM 0.73 M M M M
11/15/2018 9:35 AM 0.10 M M M M
11/16/2018 7:00 AM 0.96 M M M M Monthly rain total to date: 5.24"; more than twice Nov. 2017 total.
11/25/2018 7:30 AM 1.64 M M M M RA with periods of heavy downpours between approx. 1300 to 1930. Monthly total [6.88"] to date compares to 2.50" for all of Nov. 2017.
11/27/2018 7:00 AM 0.37 M M M M
12/2/2018 9:15 AM 0.16 M M M M
12/10/2018 9:30 AM 0.41 4.1 0.41 4.1 0.41
12/15/2018 8:00 AM 0.72 M M M M Light to moderate rain essentially continuous from about 1400 yesterday. Continuing at Obs. and report times.
12/16/2018 7:45 AM 0.91 M M M M Fog and drizzle at Obs. and Reports Times. Month total to date is 2.06", more than twice the Dec. 2017 total of 0.75".
12/17/2018 9:00 AM 0.10 M M M M Fog and drizzle most of day [16th].
12/21/2018 7:30 AM 1.06 M M M M -RA at Obs. Time. 2018 total [Rain and Liquid] to date is just over 61.5"; 2017 yearly total was 39.85"
12/22/2018 8:00 AM 0.05 M M M M
12/24/2018 7:30 AM 0.02 M M M M
12/28/2018 9:20 AM 0.44 M M M M
12/29/2018 8:00 AM 0.91 M M M M RA total for Dec. 2018 to date: 4.64"; Dec. 2017 total was 0.75"
1/1/2019 8:00 AM 0.08 M M M M 2018 Total Rain/Liquid: 63.4". Highest yearly total of all years since 2005 [year I started keeping Wx records.]
1/3/2019 9:00 AM 0.18 M M M M
1/5/2019 9:50 AM 0.07 M M M M
1/8/2019 8:30 AM 0.05 M M M M
1/13/2019 9:30 AM 0.62 5.0 0.62 5.0 0.62 -SN began approx. 1600 yesterday [1/12]. Sleet at time of Obs.
1/14/2019 10:00 AM 0.65 4.6 0.65 8.0 M
1/20/2019 8:00 AM 0.54 M M M M
1/24/2019 10:30 AM 0.32 M M M M Periods of moderate RA in early AM; -RA continues at Obs. time.
1/30/2019 9:00 AM 0.24 M M M M
2/2/2019 9:00 AM 0.01 0.5 0.01 0.5 0.01
2/7/2019 9:15 AM 0.01 M M M M
2/11/2019 8:45 AM 0.38 M M M M -RA continuing at Obs. Time.
2/12/2019 9:30 AM 0.52 M M M M -RA to moderate continues at Obs. and report times. Considerable standing water.
2/13/2019 7:45 AM 0.50 M M M M
2/16/2019 9:30 AM 0.01 M M M M Sleet at Obs. Time.
2/18/2019 8:00 AM 0.40 M M M M
2/20/2019 9:15 AM 0.14 1.1 0.14 1.1 0.14 Light SN and sleet at Obs. Time.
2/21/2019 7:30 AM 1.29 0.0 0.00 0.0 0.00
2/22/2019 9:00 AM 0.03 M M M M
2/24/2019 9:15 AM 1.19 M M M M RA at Obs. Time.
3/1/2019 8:00 AM 0.20 M M M M Some sleet overnight.
3/2/2019 9:00 AM 0.50 M M M M
3/4/2019 9:00 AM 0.49 M M M M
3/10/2019 10:10 AM 0.30 M M M M drizzle/-RA and fog.
3/19/2019 7:00 AM 0.02 M M M M
3/21/2019 7:30 AM 0.23 M M M M -RA to Moderate continuing at report time.
3/22/2019 9:00 AM 1.04 0.0 M M M gusty winds at abs/report times.
3/23/2019 7:00 AM 0.10 M M M M Light TS passed approx. 1800.
3/26/2019 7:00 AM 0.01 M M M M
4/1/2019 7:00 AM 0.02 M M M M
4/3/2019 7:00 AM 0.05 M M M M -RA in PM yesterday.
4/5/2019 8:00 AM 0.01 M M M M
4/6/2019 9:00 AM 0.10 M M M M
4/8/2019 9:00 AM 0.01 M M M M
4/9/2019 9:00 AM 0.86 M M M M TS in late afternoon; RA continued to late PM.
4/13/2019 9:00 AM 0.15 M M M M -RA continuing at report time.
4/14/2019 9:00 AM 0.06 M M M M
4/15/2019 8:00 AM 0.95 M M M M TSs after 0200. Some periods of +RA.
4/20/2019 8:00 AM 0.69 M M M M Some short periods of +RA and thunder, especially in late PM of 4/19.
4/26/2019 9:30 AM 0.06 M M M M TS approx. 0830; short period of +RA.
4/27/2019 7:00 AM 0.93 M M M M
5/3/2019 7:00 AM 0.02 M M M M TS passed near in afternoon.
5/6/2019 9:30 AM 1.38 M M M M TS with periods of +RA in late afternoon/early evening.
5/9/2019 9:30 AM 0.07 M M M M
5/12/2019 7:45 AM 0.11 M M M M
5/13/2019 8:35 AM 1.90 M M M M RA all night, with periods of +RA; continuing at report time.
5/14/2019 7:00 AM 0.12 M M M M
5/24/2019 7:00 AM 0.13 M M M M TS passed approx. 1700, 5/23.
5/26/2019 9:00 AM 0.75 M M M M Three TSs after midnight; short heavy downpours.
5/27/2019 9:00 AM 0.07 M M M M Distant thunder after midnight.
5/28/2019 9:00 AM 0.02 M M M M Light [several minutes] shower about 0830.
5/29/2019 7:00 AM 0.03 M M M M
6/3/2019 9:00 AM 0.23 M M M M
6/6/2019 8:00 AM 0.16 M M M M
6/9/2019 8:05 AM 0.03 M M M M -RA at report time.
6/10/2019 7:10 AM 0.41 M M M M A few short periods of +RA.
6/11/2019 7:45 AM 0.56 M M M M
6/13/2019 6:55 AM 1.64 M M M M Periods of +RA after midnight to early morning. RA had essentially stopped by Obs. Time.
6/18/2019 8:30 AM 1.28 M M M M TS about 1730; short periods of +RA. Another storm later, more RA.
6/19/2019 7:50 AM 0.49 M M M M
6/21/2019 7:30 AM 0.04 M M M M
7/7/2019 8:00 AM 0.48 M M M M
7/8/2019 8:05 AM 0.15 M M M M Early morning SH.
7/9/2019 4:00 PM 2.84 M M M M
7/12/2019 7:00 AM 0.21 M M M M RA and TS from late afternoon.
7/18/2019 7:00 AM 0.13 M M M M
7/23/2019 9:15 AM 0.33 M M M M
7/24/2019 7:45 AM 0.39 M M M M
8/1/2019 9:00 AM 0.27 M M M M All precipitation was before midnight on 7/31.
8/2/2019 9:15 AM 1.38 M M M M Periods of +RA from about 0700; RA continues at Obs. Time.
8/3/2019 7:00 AM 0.02 M M M M
8/6/2019 7:00 AM 0.05 M M M M Several cells near, during 8/5; none here with much RA.
8/14/2019 6:45 AM 0.06 M M M M
8/15/2019 7:00 AM 0.39 M M M M RA between 1630 and 1700, included periods of +RA.
8/21/2019 7:00 AM 0.09 M M M M
8/24/2019 9:00 AM 0.76 M M M M
8/28/2019 7:45 AM 0.03 M M M M
9/3/2019 8:00 AM 0.18 M M M M
9/6/2019 8:30 AM 0.04 M M M M Breezy at Obs. Time.
9/7/2019 7:00 AM 0.01 M M M M
9/9/2019 9:00 AM 0.09 M M M M
9/13/2019 9:00 AM 0.49 M M M M Some periods of +RA about 1900-2000.
9/18/2019 7:00 AM 0.09 M M M M Sh. in AM [9/17]



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