Station Overview Station Location
Station Number VA-FX-61 Latitude 38.888557434082
Station Name Vienna 0.8 S Longitude -77.2628860473633
County Fairfax Elevation (ft) 398



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 3.56 5.99 31 5.99 31 0.00 0 0 9 5 0.0 0 0
Nov 19 3.36 3.02 30 3.02 30 0.00 0 0 8 1 0.0 0 0
Dec 19 3.17 3.90 31 3.90 31 0.00 0 0 13 1 0.1 1 0
Jan 20 2.95 3.60 31 3.60 31 0.00 0 0 10 1 1.1 2 0
Feb 20 2.75 3.44 29 3.44 29 0.00 0 0 14 4 0.0 0 0
March 20 3.68 2.42 31 2.42 31 0.00 0 0 14 5 0.0 0 0
April 20 3.33 4.98 30 4.98 30 0.00 0 0 14 3 0.0 0 0
May 20 4.24 3.29 31 3.29 31 0.00 0 0 13 2 0.0 0 0
June 20 3.98 5.88 30 5.88 30 0.00 0 0 9 3 0.0 0 0
July 20 4.04 4.73 31 4.73 31 0.00 0 0 11 3 0.0 0 0
Aug 20 3.36 8.01 31 8.01 31 0.00 0 0 16 3 0.0 0 0
Sept 20 4.00 3.38 30 3.38 30 0.00 0 0 11 0 0.0 0 0
Water Year Totals: 42.42" 52.64" 366 days 52.64" 366 0.00" 0 days 0 142 days 31 days 1.2" 3 days 0 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 0.10
10/2/2019 0.00
10/3/2019 0.00
10/4/2019 0.00
10/5/2019 0.00
10/6/2019 0.00
10/7/2019 0.00
10/8/2019 T
10/9/2019 0.06
10/10/2019 0.00
10/11/2019 0.00
10/12/2019 0.00
10/13/2019 T
10/14/2019 T
10/15/2019 0.00
10/16/2019 0.00
10/17/2019 1.22
10/18/2019 0.00
10/19/2019 0.00
10/20/2019 0.39
10/21/2019 2.00
10/22/2019 T
10/23/2019 0.46
10/24/2019 0.00
10/25/2019 0.00
10/26/2019 T
10/27/2019 0.55
10/28/2019 0.46
10/29/2019 0.00
10/30/2019 0.00
10/31/2019 0.75
11/1/2019 1.29
11/2/2019 0.00
11/3/2019 0.00
11/4/2019 0.00
11/5/2019 0.00
11/6/2019 0.00
11/7/2019 0.00
11/8/2019 0.09
11/9/2019 0.00
11/10/2019 0.00
11/11/2019 0.00
11/12/2019 0.08
11/13/2019 0.00
11/14/2019 0.00
11/15/2019 0.00
11/16/2019 0.00
11/17/2019 0.00
11/18/2019 0.03
11/19/2019 0.31
11/20/2019 0.00
11/21/2019 0.00
11/22/2019 0.00
11/23/2019 0.20
11/24/2019 0.99
11/25/2019 0.00
11/26/2019 0.00
11/27/2019 0.03
11/28/2019 T
11/29/2019 0.00
11/30/2019 0.00
12/1/2019 0.09
12/2/2019 0.36
12/3/2019 0.04
12/4/2019 0.03
12/5/2019 0.01
12/6/2019 0.00
12/7/2019 0.00
12/8/2019 0.00
12/9/2019 0.00
12/10/2019 0.53
12/11/2019 0.00
12/12/2019 0.00
12/13/2019 0.00
12/14/2019 1.01
12/15/2019 0.18
12/16/2019 0.24
12/17/2019 0.57
12/18/2019 0.04
12/19/2019 0.00
12/20/2019 0.00
12/21/2019 0.00
12/22/2019 0.00
12/23/2019 0.00
12/24/2019 0.00
12/25/2019 0.00
12/26/2019 0.00
12/27/2019 0.00
12/28/2019 T
12/29/2019 0.00
12/30/2019 0.63
12/31/2019 0.17
Day of YearDaily PrcpMultiday Prcp
1/1/2020 0.00
1/2/2020 0.00
1/3/2020 0.15
1/4/2020 0.15
1/5/2020 0.33
1/6/2020 0.00
1/7/2020 0.00
1/8/2020 0.38
1/9/2020 0.00
1/10/2020 0.00
1/11/2020 0.00
1/12/2020 0.37
1/13/2020 0.00
1/14/2020 0.01
1/15/2020 0.09
1/16/2020 0.00
1/17/2020 0.00
1/18/2020 0.04
1/19/2020 0.26
1/20/2020 0.00
1/21/2020 0.00
1/22/2020 0.00
1/23/2020 0.00
1/24/2020 0.00
1/25/2020 1.82
1/26/2020 T
1/27/2020 0.00
1/28/2020 0.00
1/29/2020 0.00
1/30/2020 0.00
1/31/2020 0.00
2/1/2020 T
2/2/2020 0.10
2/3/2020 T
2/4/2020 0.01
2/5/2020 T
2/6/2020 0.16
2/7/2020 0.91
2/8/2020 0.31
2/9/2020 0.00
2/10/2020 0.06
2/11/2020 0.65
2/12/2020 0.11
2/13/2020 0.21
2/14/2020 0.12
2/15/2020 0.00
2/16/2020 0.00
2/17/2020 0.00
2/18/2020 0.00
2/19/2020 0.03
2/20/2020 0.00
2/21/2020 0.00
2/22/2020 0.00
2/23/2020 0.00
2/24/2020 0.00
2/25/2020 0.15
2/26/2020 0.15
2/27/2020 0.47
2/28/2020 0.00
2/29/2020 T
3/1/2020 0.00
3/2/2020 0.00
3/3/2020 0.10
3/4/2020 0.05
3/5/2020 0.00
3/6/2020 0.00
3/7/2020 0.04
3/8/2020 0.00
3/9/2020 0.00
3/10/2020 0.00
3/11/2020 0.02
3/12/2020 T
3/13/2020 0.24
3/14/2020 0.00
3/15/2020 0.24
3/16/2020 0.00
3/17/2020 T
3/18/2020 T
3/19/2020 0.32
3/20/2020 0.00
3/21/2020 0.07
3/22/2020 0.00
3/23/2020 0.17
3/24/2020 0.23
3/25/2020 0.11
3/26/2020 0.32
3/27/2020 T
3/28/2020 0.41
3/29/2020 0.10
3/30/2020 T
3/31/2020 0.00
Day of YearDaily PrcpMultiday Prcp
4/1/2020 0.19
4/2/2020 0.00
4/3/2020 0.00
4/4/2020 0.00
4/5/2020 0.00
4/6/2020 T
4/7/2020 0.00
4/8/2020 0.34
4/9/2020 0.11
4/10/2020 0.00
4/11/2020 0.00
4/12/2020 0.00
4/13/2020 1.50
4/14/2020 0.36
4/15/2020 0.44
4/16/2020 0.00
4/17/2020 0.00
4/18/2020 0.03
4/19/2020 0.01
4/20/2020 0.00
4/21/2020 0.00
4/22/2020 T
4/23/2020 0.00
4/24/2020 1.00
4/25/2020 0.05
4/26/2020 0.60
4/27/2020 0.32
4/28/2020 0.01
4/29/2020 0.02
4/30/2020 T
5/1/2020 0.95
5/2/2020 0.05
5/3/2020 0.00
5/4/2020 1.17
5/5/2020 0.00
5/6/2020 0.30
5/7/2020 0.04
5/8/2020 T
5/9/2020 0.09
5/10/2020 0.00
5/11/2020 0.01
5/12/2020 0.00
5/13/2020 0.00
5/14/2020 0.00
5/15/2020 0.01
5/16/2020 0.00
5/17/2020 0.00
5/18/2020 0.00
5/19/2020 T
5/20/2020 0.00
5/21/2020 0.00
5/22/2020 0.22
5/23/2020 0.29
5/24/2020 0.00
5/25/2020 0.00
5/26/2020 0.00
5/27/2020 0.00
5/28/2020 0.04
5/29/2020 0.08
5/30/2020 0.04
5/31/2020 0.00
6/1/2020 0.00
6/2/2020 0.00
6/3/2020 T
6/4/2020 0.00
6/5/2020 1.28
6/6/2020 0.48
6/7/2020 0.00
6/8/2020 0.00
6/9/2020 0.00
6/10/2020 0.00
6/11/2020 0.97
6/12/2020 T
6/13/2020 0.00
6/14/2020 0.00
6/15/2020 0.00
6/16/2020 0.00
6/17/2020 T
6/18/2020 0.98
6/19/2020 0.05
6/20/2020 1.20
6/21/2020 0.04
6/22/2020 0.00
6/23/2020 0.03
6/24/2020 0.00
6/25/2020 0.00
6/26/2020 0.00
6/27/2020 0.00
6/28/2020 0.85
6/29/2020 0.00
6/30/2020 0.00
Day of YearDaily PrcpMultiday Prcp
7/1/2020 0.02
7/2/2020 0.00
7/3/2020 0.00
7/4/2020 0.00
7/5/2020 0.00
7/6/2020 0.04
7/7/2020 1.65
7/8/2020 0.00
7/9/2020 0.00
7/10/2020 0.00
7/11/2020 0.01
7/12/2020 0.00
7/13/2020 T
7/14/2020 T
7/15/2020 0.00
7/16/2020 0.00
7/17/2020 0.00
7/18/2020 T
7/19/2020 0.00
7/20/2020 0.00
7/21/2020 0.01
7/22/2020 0.56
7/23/2020 1.32
7/24/2020 0.57
7/25/2020 0.34
7/26/2020 0.00
7/27/2020 0.00
7/28/2020 0.00
7/29/2020 0.01
7/30/2020 0.00
7/31/2020 0.20
8/1/2020 0.09
8/2/2020 T
8/3/2020 0.00
8/4/2020 2.02
8/5/2020 0.84
8/6/2020 0.50
8/7/2020 T
8/8/2020 0.00
8/9/2020 0.00
8/10/2020 0.00
8/11/2020 0.00
8/12/2020 0.40
8/13/2020 0.18
8/14/2020 0.72
8/15/2020 0.02
8/16/2020 0.99
8/17/2020 0.09
8/18/2020 0.00
8/19/2020 0.02
8/20/2020 0.07
8/21/2020 0.00
8/22/2020 0.02
8/23/2020 T
8/24/2020 0.00
8/25/2020 0.00
8/26/2020 0.34
8/27/2020 0.00
8/28/2020 0.00
8/29/2020 1.66
8/30/2020 0.05
8/31/2020 0.00
9/1/2020 0.31
9/2/2020 0.07
9/3/2020 0.10
9/4/2020 0.01
9/5/2020 0.00
9/6/2020 0.00
9/7/2020 0.00
9/8/2020 0.00
9/9/2020 0.00
9/10/2020 0.98
9/11/2020 0.51
9/12/2020 0.02
9/13/2020 0.00
9/14/2020 0.00
9/15/2020 0.00
9/16/2020 0.00
9/17/2020 0.00
9/18/2020 0.47
9/19/2020 0.00
9/20/2020 0.00
9/21/2020 0.00
9/22/2020 0.00
9/23/2020 0.00
9/24/2020 0.00
9/25/2020 0.00
9/26/2020 0.46
9/27/2020 0.01
9/28/2020 0.00
9/29/2020 0.00
9/30/2020 0.44



Observation Date Observation Time Precipitation Snowfall Snowfall SWE Snow Depth Snow SWE Notes
10/1/2019 7:00 AM 0.10 M M M M
10/2/2019 7:00 AM 0.00 0.0 M M M
10/3/2019 7:00 AM 0.00 0.0 M M M
10/4/2019 7:00 AM 0.00 0.0 M M M
10/5/2019 7:00 AM 0.00 0.0 M M M
10/6/2019 7:00 AM 0.00 0.0 M M M
10/7/2019 7:00 AM 0.00 0.0 M M M
10/8/2019 7:00 AM T M M M M
10/9/2019 7:00 AM 0.06 M M M M
10/10/2019 7:00 AM 0.00 0.0 M M M
10/11/2019 7:00 AM 0.00 0.0 M M M
10/12/2019 7:00 AM 0.00 0.0 M M M
10/13/2019 7:00 AM T M M M M
10/14/2019 7:00 AM T M M M M
10/15/2019 7:00 AM 0.00 0.0 M M M
10/16/2019 7:00 AM 0.00 0.0 M M M
10/17/2019 7:00 AM 1.22 M M M M
10/18/2019 7:00 AM 0.00 0.0 M M M
10/19/2019 7:00 AM 0.00 0.0 M M M
10/20/2019 7:00 AM 0.39 M M M M
10/21/2019 7:00 AM 2.00 M M M M
10/22/2019 7:00 AM T M M M M
10/23/2019 7:00 AM 0.46 M M M M
10/24/2019 7:00 AM 0.00 0.0 M M M
10/25/2019 7:00 AM 0.00 0.0 M M M
10/26/2019 7:00 AM T M M M M
10/27/2019 7:00 AM 0.55 M M M M
10/28/2019 7:00 AM 0.46 M M M M
10/29/2019 7:00 AM 0.00 0.0 M M M
10/30/2019 7:00 AM 0.00 0.0 M M M
10/31/2019 7:00 AM 0.75 M M M M
11/1/2019 7:00 AM 1.29 M M M M
11/2/2019 7:00 AM 0.00 0.0 M M M
11/3/2019 7:00 AM 0.00 0.0 M M M
11/4/2019 7:00 AM 0.00 0.0 M M M
11/5/2019 7:00 AM 0.00 0.0 M M M
11/6/2019 7:00 AM 0.00 0.0 M M M
11/7/2019 7:00 AM 0.00 0.0 M M M
11/8/2019 7:00 AM 0.09 M M M M
11/9/2019 7:00 AM 0.00 0.0 M M M
11/10/2019 7:00 AM 0.00 0.0 M M M
11/11/2019 7:00 AM 0.00 0.0 M M M
11/12/2019 7:00 AM 0.08 M M M M
11/13/2019 7:00 AM 0.00 0.0 M M M
11/14/2019 7:00 AM 0.00 0.0 M M M
11/15/2019 7:00 AM 0.00 0.0 M M M
11/16/2019 7:00 AM 0.00 0.0 M M M
11/17/2019 7:00 AM 0.00 0.0 M M M
11/18/2019 7:00 AM 0.03 M M M M
11/19/2019 7:00 AM 0.31 M M M M
11/20/2019 7:00 AM 0.00 0.0 M M M
11/21/2019 7:00 AM 0.00 0.0 M M M
11/22/2019 7:00 AM 0.00 0.0 M M M
11/23/2019 7:00 AM 0.20 M M M M
11/24/2019 7:00 AM 0.99 M M M M
11/25/2019 7:00 AM 0.00 0.0 M M M
11/26/2019 7:00 AM 0.00 0.0 M M M
11/27/2019 7:00 AM 0.03 M M M M
11/28/2019 7:00 AM T M M M M
11/29/2019 7:00 AM 0.00 0.0 M M M
11/30/2019 7:00 AM 0.00 0.0 M M M
12/1/2019 7:00 AM 0.09 M M M M
12/2/2019 7:00 AM 0.36 M M M M
12/3/2019 7:00 AM 0.04 M M M M
12/4/2019 7:00 AM 0.03 M M M M
12/5/2019 7:00 AM 0.01 M M M M
12/6/2019 7:00 AM 0.00 0.0 M M M
12/7/2019 7:00 AM 0.00 0.0 M M M
12/8/2019 7:00 AM 0.00 0.0 M M M
12/9/2019 7:00 AM 0.00 0.0 M M M
12/10/2019 7:00 AM 0.53 M M M M
12/11/2019 7:00 AM 0.00 0.0 M M M
12/12/2019 7:00 AM 0.00 0.0 M M M
12/13/2019 7:00 AM 0.00 0.0 M M M
12/14/2019 7:00 AM 1.01 M M M M
12/15/2019 7:00 AM 0.18 M M M M
12/16/2019 7:00 AM 0.24 0.1 M M M
12/17/2019 7:00 AM 0.57 M M M M
12/18/2019 7:00 AM 0.04 M M M M
12/19/2019 7:00 AM 0.00 0.0 M M M
12/20/2019 7:00 AM 0.00 0.0 M M M
12/21/2019 7:00 AM 0.00 0.0 M M M
12/22/2019 7:00 AM 0.00 0.0 M M M
12/23/2019 7:00 AM 0.00 0.0 M M M
12/24/2019 7:00 AM 0.00 0.0 M M M
12/25/2019 7:00 AM 0.00 0.0 M M M
12/26/2019 7:00 AM 0.00 0.0 M M M
12/27/2019 7:00 AM 0.00 0.0 M M M
12/28/2019 7:00 AM T M M M M
12/29/2019 7:00 AM 0.00 0.0 M M M
12/30/2019 7:00 AM 0.63 M M M M
12/31/2019 7:00 AM 0.17 M M M M
1/1/2020 7:00 AM 0.00 0.0 M M M
1/2/2020 7:00 AM 0.00 0.0 M M M
1/3/2020 7:00 AM 0.15 M M M M
1/4/2020 7:00 AM 0.15 M M M M
1/5/2020 7:00 AM 0.33 M M M M
1/6/2020 7:00 AM 0.00 0.0 M M M
1/7/2020 7:00 AM 0.00 0.0 M M M
1/8/2020 7:00 AM 0.38 0.9 M M M
1/9/2020 7:00 AM 0.00 0.0 M M M
1/10/2020 7:00 AM 0.00 0.0 M M M
1/11/2020 7:00 AM 0.00 0.0 M M M
1/12/2020 7:00 AM 0.37 M M M M
1/13/2020 7:00 AM 0.00 0.0 M M M
1/14/2020 7:00 AM 0.01 M M M M
1/15/2020 7:00 AM 0.09 M M M M
1/16/2020 7:00 AM 0.00 0.0 M M M
1/17/2020 7:00 AM 0.00 0.0 M M M
1/18/2020 7:00 AM 0.04 0.2 M M M
1/19/2020 7:00 AM 0.26 M M M M
1/20/2020 7:00 AM 0.00 0.0 M M M
1/21/2020 7:00 AM 0.00 0.0 M M M
1/22/2020 7:00 AM 0.00 0.0 M M M
1/23/2020 7:00 AM 0.00 0.0 M M M
1/24/2020 7:00 AM 0.00 0.0 M M M
1/25/2020 7:00 AM 1.82 M M M M
1/26/2020 7:00 AM T M M M M
1/27/2020 7:00 AM 0.00 0.0 M M M
1/28/2020 7:00 AM 0.00 0.0 M M M
1/29/2020 7:00 AM 0.00 0.0 M M M
1/30/2020 7:00 AM 0.00 0.0 M M M
1/31/2020 7:00 AM 0.00 0.0 M M M
2/1/2020 7:00 AM T M M M M
2/2/2020 7:00 AM 0.10 M M M M
2/3/2020 7:00 AM T M M M M
2/4/2020 7:00 AM 0.01 M M M M
2/5/2020 7:00 AM T M M M M
2/6/2020 7:00 AM 0.16 M M M M
2/7/2020 7:00 AM 0.91 M M M M
2/8/2020 7:00 AM 0.31 M M M M
2/9/2020 7:00 AM 0.00 0.0 M M M
2/10/2020 7:00 AM 0.06 M M M M
2/11/2020 7:00 AM 0.65 M M M M
2/12/2020 7:00 AM 0.11 M M M M
2/13/2020 7:00 AM 0.21 M M M M
2/14/2020 7:00 AM 0.12 M M M M
2/15/2020 7:00 AM 0.00 0.0 M M M
2/16/2020 7:00 AM 0.00 0.0 M M M
2/17/2020 7:00 AM 0.00 0.0 M M M
2/18/2020 7:00 AM 0.00 0.0 M M M
2/19/2020 7:00 AM 0.03 M M M M
2/20/2020 7:00 AM 0.00 0.0 M M M
2/21/2020 7:00 AM 0.00 0.0 M M M
2/22/2020 7:00 AM 0.00 0.0 M M M
2/23/2020 7:00 AM 0.00 0.0 M M M
2/24/2020 7:00 AM 0.00 0.0 M M M
2/25/2020 7:00 AM 0.15 M M M M
2/26/2020 7:00 AM 0.15 M M M M
2/27/2020 7:00 AM 0.47 M M M M Heavy rain between 11 pm and midnight with strong winds as cold front passed.
2/28/2020 7:00 AM 0.00 0.0 M M M
2/29/2020 7:00 AM T M M M M SNOW Flurries at least 2x during the daylight hours
3/1/2020 7:00 AM 0.00 0.0 M M M
3/2/2020 7:00 AM 0.00 0.0 M M M
3/3/2020 7:00 AM 0.10 M M M M
3/4/2020 7:00 AM 0.05 M M M M
3/5/2020 7:00 AM 0.00 0.0 M M M
3/6/2020 7:00 AM 0.00 0.0 M M M
3/7/2020 7:00 AM 0.04 M M M M
3/8/2020 7:00 AM 0.00 0.0 M M M
3/9/2020 7:00 AM 0.00 0.0 M M M
3/10/2020 7:00 AM 0.00 0.0 M M M
3/11/2020 7:00 AM 0.02 M M M M
3/12/2020 7:00 AM T M M M M
3/13/2020 7:00 AM 0.24 M M M M
3/14/2020 7:00 AM 0.00 0.0 M M M
3/15/2020 7:00 AM 0.24 M M M M
3/16/2020 7:00 AM 0.00 0.0 M M M
3/17/2020 7:00 AM T M M M M
3/18/2020 7:00 AM T M M M M
3/19/2020 7:00 AM 0.32 M M M M
3/20/2020 7:00 AM 0.00 0.0 M M M
3/21/2020 7:00 AM 0.07 M M M M
3/22/2020 7:00 AM 0.00 0.0 M M M
3/23/2020 7:00 AM 0.17 M M M M
3/24/2020 7:00 AM 0.23 M M M M
3/25/2020 7:00 AM 0.11 M M M M
3/26/2020 7:00 AM 0.32 M M M M
3/27/2020 7:00 AM T M M M M
3/28/2020 7:00 AM 0.41 M M M M
3/29/2020 7:00 AM 0.10 M M M M
3/30/2020 7:00 AM T M M M M
3/31/2020 7:00 AM 0.00 0.0 M M M
4/1/2020 7:00 AM 0.19 M M M M
4/2/2020 7:00 AM 0.00 0.0 M M M
4/3/2020 7:00 AM 0.00 0.0 M M M
4/4/2020 7:00 AM 0.00 0.0 M M M
4/5/2020 7:00 AM 0.00 0.0 M M M
4/6/2020 7:00 AM T M M M M
4/7/2020 7:00 AM 0.00 0.0 M M M
4/8/2020 7:00 AM 0.34 M M M M
4/9/2020 7:00 AM 0.11 M M M M
4/10/2020 7:00 AM 0.00 0.0 M M M
4/11/2020 7:00 AM 0.00 0.0 M M M
4/12/2020 7:00 AM 0.00 0.0 M M M
4/13/2020 7:00 AM 1.50 M M M M Started with light rain at 8 pm and continued through the night and morning with thunder at two separate times of the night. Heavy rain at time of observation.
4/14/2020 7:00 AM 0.36 M M M M
4/15/2020 7:00 AM 0.44 M M M M
4/16/2020 7:00 AM 0.00 0.0 M M M
4/17/2020 7:00 AM 0.00 0.0 M M M
4/18/2020 7:00 AM 0.03 M M M M
4/19/2020 7:00 AM 0.01 M M M M
4/20/2020 7:00 AM 0.00 0.0 M M M
4/21/2020 7:00 AM 0.00 0.0 M M M
4/22/2020 7:00 AM T M M M M
4/23/2020 7:00 AM 0.00 0.0 M M M
4/24/2020 7:00 AM 1.00 M M M M
4/25/2020 7:00 AM 0.05 M M M M
4/26/2020 7:00 AM 0.60 M M M M
4/27/2020 7:00 AM 0.32 M M M M
4/28/2020 7:00 AM 0.01 M M M M
4/29/2020 7:00 AM 0.02 M M M M
4/30/2020 7:00 AM T M M M M
5/1/2020 7:00 AM 0.95 M M M M
5/2/2020 7:00 AM 0.05 M M M M
5/3/2020 7:00 AM 0.00 0.0 M M M
5/4/2020 7:00 AM 1.17 M M M M Several Thunderstorms moved over the station last night.
5/5/2020 7:00 AM 0.00 0.0 M M M
5/6/2020 7:00 AM 0.30 M M M M
5/7/2020 7:00 AM 0.04 M M M M
5/8/2020 7:00 AM T M M M M
5/9/2020 7:00 AM 0.09 M M M M
5/10/2020 7:00 AM 0.00 0.0 M M M
5/11/2020 7:00 AM 0.01 M M M M
5/12/2020 7:00 AM 0.00 0.0 M M M
5/13/2020 7:00 AM 0.00 0.0 M M M
5/14/2020 7:00 AM 0.00 0.0 M M M
5/15/2020 7:00 AM 0.01 M M M M
5/16/2020 7:00 AM 0.00 0.0 M M M
5/17/2020 7:00 AM 0.00 0.0 M M M
5/18/2020 7:00 AM 0.00 0.0 M M M
5/19/2020 7:00 AM T M M M M
5/20/2020 7:00 AM 0.00 0.0 M M M
5/21/2020 7:00 AM 0.00 0.0 M M M
5/22/2020 7:00 AM 0.22 M M M M
5/23/2020 7:00 AM 0.29 M M M M
5/24/2020 7:00 AM 0.00 0.0 M M M
5/25/2020 7:00 AM 0.00 0.0 M M M
5/26/2020 7:00 AM 0.00 0.0 M M M
5/27/2020 7:00 AM 0.00 0.0 M M M
5/28/2020 7:00 AM 0.04 M M M M
5/29/2020 7:00 AM 0.08 M M M M
5/30/2020 7:00 AM 0.04 M M M M
5/31/2020 7:00 AM 0.00 0.0 M M M
6/1/2020 7:00 AM 0.00 0.0 M M M
6/2/2020 7:00 AM 0.00 0.0 M M M
6/3/2020 7:00 AM T M M M M
6/4/2020 7:00 AM 0.00 0.0 M M M
6/5/2020 7:00 AM 1.28 M M M M Several thunderstorms in the area between 715 pm and after midnight. Most of the rain was after midnight.
6/6/2020 7:00 AM 0.48 M M M M
6/7/2020 7:00 AM 0.00 0.0 M M M
6/8/2020 7:00 AM 0.00 0.0 M M M
6/9/2020 7:00 AM 0.00 0.0 M M M
6/10/2020 7:00 AM 0.00 0.0 M M M
6/11/2020 7:00 AM 0.97 M M M M STRONG Thunderstorm - lights flickered on/off multiple times. Lot of lightning. Heavy rain during the storm from about 720 pm - 745 pm.
6/12/2020 7:00 AM T M M M M
6/13/2020 7:00 AM 0.00 0.0 M M M
6/14/2020 7:00 AM 0.00 0.0 M M M
6/15/2020 7:00 AM 0.00 0.0 M M M
6/16/2020 7:00 AM 0.00 0.0 M M M
6/17/2020 7:00 AM T M M M M
6/18/2020 7:00 AM 0.98 M M M M
6/19/2020 7:00 AM 0.05 M M M M
6/20/2020 7:00 AM 1.20 M M M M Thunderstorms about 820 pm - 945 pm
6/21/2020 7:00 AM 0.04 M M M M
6/22/2020 7:00 AM 0.00 0.0 M M M
6/23/2020 7:00 AM 0.03 M M M M
6/24/2020 7:00 AM 0.00 0.0 M M M
6/25/2020 7:00 AM 0.00 0.0 M M M
6/26/2020 7:00 AM 0.00 0.0 M M M
6/27/2020 7:00 AM 0.00 0.0 M M M
6/28/2020 7:00 AM 0.85 M M M M
6/29/2020 7:00 AM 0.00 0.0 M M M
6/30/2020 7:00 AM 0.00 0.0 M M M
7/1/2020 7:00 AM 0.02 M M M M
7/2/2020 7:00 AM 0.00 0.0 M M M
7/3/2020 7:00 AM 0.00 0.0 M M M
7/4/2020 7:00 AM 0.00 0.0 M M M
7/5/2020 7:00 AM 0.00 0.0 M M M
7/6/2020 7:00 AM 0.04 M M M M
7/7/2020 7:00 AM 1.65 M M M M Thunder was constant between 1230 am and 240 am lightning was constant too - bright night sky. Prior to 10 pm the lightning was constant ese of here in DC.
7/8/2020 7:00 AM 0.00 0.0 M M M
7/9/2020 7:00 AM 0.00 0.0 M M M
7/10/2020 7:00 AM 0.00 0.0 M M M
7/11/2020 7:00 AM 0.01 M M M M
7/12/2020 7:00 AM 0.00 0.0 M M M
7/13/2020 7:00 AM T M M M M
7/14/2020 7:00 AM T M M M M
7/15/2020 7:00 AM 0.00 0.0 M M M
7/16/2020 7:00 AM 0.00 0.0 M M M
7/17/2020 7:00 AM 0.00 0.0 M M M
7/18/2020 7:00 AM T M M M M
7/19/2020 7:00 AM 0.00 0.0 M M M
7/20/2020 7:00 AM 0.00 0.0 M M M
7/21/2020 7:00 AM 0.01 M M M M
7/22/2020 7:00 AM 0.56 M M M M Thunderstorms beginning around 8 pm. Prior heard a lot of thunder and saw lightning as those storms passed south of Vienna.
7/23/2020 7:00 AM 1.32 M M M M
7/24/2020 7:00 AM 0.57 M M M M
7/25/2020 7:00 AM 0.34 M M M M
7/26/2020 7:00 AM 0.00 0.0 M M M
7/27/2020 7:00 AM 0.00 0.0 M M M
7/28/2020 7:00 AM 0.00 0.0 M M M
7/29/2020 7:00 AM 0.01 M M M M
7/30/2020 7:00 AM 0.00 0.0 M M M
7/31/2020 7:00 AM 0.20 M M M M
8/1/2020 7:00 AM 0.09 M M M M
8/2/2020 7:00 AM T M M M M
8/3/2020 7:00 AM 0.00 0.0 M M M
8/4/2020 7:00 AM 2.02 M M M M Isaias
8/5/2020 7:00 AM 0.84 M M M M Isaias - ended around 11 am
8/6/2020 7:00 AM 0.50 M M M M Thunderstorms between 2 and 3 am.
8/7/2020 7:00 AM T M M M M
8/8/2020 7:00 AM 0.00 0.0 M M M
8/9/2020 7:00 AM 0.00 0.0 M M M
8/10/2020 7:00 AM 0.00 0.0 M M M
8/11/2020 7:00 AM 0.00 0.0 M M M
8/12/2020 7:00 AM 0.40 M M M M
8/13/2020 7:00 AM 0.18 M M M M
8/14/2020 7:00 AM 0.72 M M M M
8/15/2020 7:00 AM 0.02 M M M M
8/16/2020 7:00 AM 0.99 M M M M
8/17/2020 7:00 AM 0.09 M M M M
8/18/2020 7:00 AM 0.00 0.0 M M M
8/19/2020 7:00 AM 0.02 M M M M
8/20/2020 7:00 AM 0.07 M M M M
8/21/2020 7:00 AM 0.00 0.0 M M M
8/22/2020 7:00 AM 0.02 M M M M
8/23/2020 7:00 AM T M M M M
8/24/2020 7:00 AM 0.00 0.0 M M M
8/25/2020 7:00 AM 0.00 0.0 M M M
8/26/2020 7:00 AM 0.34 M M M M
8/27/2020 7:00 AM 0.00 0.0 M M M
8/28/2020 7:00 AM 0.00 0.0 M M M
8/29/2020 7:00 AM 1.66 M M M M
8/30/2020 7:00 AM 0.05 M M M M
8/31/2020 7:00 AM 0.00 0.0 M M M
9/1/2020 7:00 AM 0.31 M M M M
9/2/2020 7:00 AM 0.07 M M M M
9/3/2020 7:00 AM 0.10 M M M M
9/4/2020 7:00 AM 0.01 M M M M
9/5/2020 7:00 AM 0.00 0.0 M M M
9/6/2020 7:00 AM 0.00 0.0 M M M
9/7/2020 7:00 AM 0.00 0.0 M M M
9/8/2020 7:00 AM 0.00 0.0 M M M
9/9/2020 7:00 AM 0.00 0.0 M M M
9/10/2020 7:00 AM 0.98 M M M M
9/11/2020 7:00 AM 0.51 M M M M
9/12/2020 7:00 AM 0.02 M M M M
9/13/2020 7:00 AM 0.00 0.0 M M M
9/14/2020 7:00 AM 0.00 0.0 M M M
9/15/2020 7:00 AM 0.00 0.0 M M M
9/16/2020 7:00 AM 0.00 0.0 M M M
9/17/2020 7:00 AM 0.00 0.0 M M M
9/18/2020 7:00 AM 0.47 M M M M
9/19/2020 7:00 AM 0.00 0.0 M M M
9/20/2020 7:00 AM 0.00 0.0 M M M
9/21/2020 7:00 AM 0.00 0.0 M M M
9/22/2020 7:00 AM 0.00 0.0 M M M
9/23/2020 7:00 AM 0.00 0.0 M M M
9/24/2020 7:00 AM 0.00 0.0 M M M
9/25/2020 7:00 AM 0.00 0.0 M M M
9/26/2020 7:00 AM 0.46 M M M M
9/27/2020 7:00 AM 0.01 M M M M
9/28/2020 7:00 AM 0.00 0.0 M M M
9/29/2020 7:00 AM 0.00 0.0 M M M
9/30/2020 7:00 AM 0.44 M 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