Station Overview Station Location
Station Number VA-FX-51 Latitude 38.903
Station Name Vienna 1.3 W Longitude -77.2836
County Fairfax Elevation (ft) 371



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 17 3.55 2.72 31 2.72 31 0.00 0 0 13 2 0.0 0 0
Nov 17 3.35 2.40 30 2.40 30 0.00 0 0 10 3 0.0 0 0
Dec 17 3.17 0.83 31 0.83 31 0.00 0 0 8 3 3.1 3 2
Jan 18 2.94 1.48 31 1.48 31 0.00 0 0 8 4 1.5 2 4
Feb 18 2.74 4.81 28 4.65 26 0.16 2 1 17 2 1.5 1 1
March 18 3.67 2.14 31 2.14 28 0.00 3 0 9 1 6.7 2 2
April 18 3.34 4.92 30 4.61 28 0.31 2 1 13 2 0.0 0 0
May 18 4.24 8.34 31 8.34 31 0.00 0 0 16 3 0.0 0 0
June 18 3.98 6.09 30 4.50 16 1.59 14 1 8 0 0.0 0 0
July 18 4.03 12.11 31 12.11 31 0.00 0 0 12 2 0.0 0 0
Aug 18 3.36 5.95 31 5.72 26 0.23 5 1 12 5 0.0 0 0
Sept 18 4.00 7.90 30 7.90 30 0.00 0 0 21 0 0.0 0 0
Water Year Totals: 42.37" 59.69" 365 days 57.40" 339 2.29" 26 days 4 147 days 27 days 12.8" 8 days 9 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
10/1/2017 0.00
10/2/2017 0.00
10/3/2017 0.00
10/4/2017 0.00
10/5/2017 0.00
10/6/2017 T
10/7/2017 0.00
10/8/2017 0.01
10/9/2017 0.58
10/10/2017 0.16
10/11/2017 0.02
10/12/2017 0.42
10/13/2017 0.01
10/14/2017 0.01
10/15/2017 0.02
10/16/2017 0.06
10/17/2017 0.01
10/18/2017 0.00
10/19/2017 0.00
10/20/2017 0.00
10/21/2017 0.00
10/22/2017 0.00
10/23/2017 0.00
10/24/2017 0.23
10/25/2017 0.00
10/26/2017 T
10/27/2017 0.00
10/28/2017 0.00
10/29/2017 0.07
10/30/2017 1.12
10/31/2017 0.00
11/1/2017 0.00
11/2/2017 0.01
11/3/2017 0.00
11/4/2017 T
11/5/2017 0.71
11/6/2017 0.04
11/7/2017 0.01
11/8/2017 1.23
11/9/2017 0.04
11/10/2017 0.02
11/11/2017 0.00
11/12/2017 0.00
11/13/2017 0.17
11/14/2017 0.00
11/15/2017 0.00
11/16/2017 0.01
11/17/2017 0.00
11/18/2017 0.00
11/19/2017 0.16
11/20/2017 T
11/21/2017 0.00
11/22/2017 T
11/23/2017 0.00
11/24/2017 0.00
11/25/2017 0.00
11/26/2017 0.00
11/27/2017 0.00
11/28/2017 0.00
11/29/2017 0.00
11/30/2017 0.00
12/1/2017 0.04
12/2/2017 0.00
12/3/2017 0.04
12/4/2017 0.00
12/5/2017 0.00
12/6/2017 0.13
12/7/2017 0.00
12/8/2017 0.00
12/9/2017 T
12/10/2017 0.22
12/11/2017 0.00
12/12/2017 0.00
12/13/2017 0.00
12/14/2017 0.00
12/15/2017 0.00
12/16/2017 0.03
12/17/2017 0.00
12/18/2017 T
12/19/2017 0.00
12/20/2017 0.00
12/21/2017 0.00
12/22/2017 0.00
12/23/2017 0.06
12/24/2017 0.28
12/25/2017 0.00
12/26/2017 0.00
12/27/2017 0.00
12/28/2017 T
12/29/2017 0.00
12/30/2017 0.03
12/31/2017 0.00
Day of YearDaily PrcpMultiday Prcp
1/1/2018 T
1/2/2018 0.00
1/3/2018 0.00
1/4/2018 0.07
1/5/2018 T
1/6/2018 0.00
1/7/2018 0.00
1/8/2018 0.00
1/9/2018 0.06
1/10/2018 0.00
1/11/2018 0.00
1/12/2018 0.12
1/13/2018 0.88
1/14/2018 0.00
1/15/2018 0.00
1/16/2018 T
1/17/2018 0.04
1/18/2018 0.00
1/19/2018 0.00
1/20/2018 0.00
1/21/2018 0.00
1/22/2018 0.00
1/23/2018 0.12
1/24/2018 0.00
1/25/2018 0.00
1/26/2018 0.00
1/27/2018 0.00
1/28/2018 0.04
1/29/2018 0.15
1/30/2018 T
1/31/2018 0.00
2/1/2018 0.00
2/2/2018 0.14
2/3/2018 T
2/4/2018 0.00
2/5/2018 1.14
2/6/2018 0.00
2/7/2018 0.01
2/8/2018 0.45
2/9/2018 0.00
2/10/2018 0.00
2/11/2018 1.62
2/12/2018 0.09
2/13/2018 0.04
2/14/2018 0.01
2/15/2018 **
2/16/2018 0.16
2/17/2018 0.05
2/18/2018 0.47
2/19/2018 0.04
2/20/2018 T
2/21/2018 0.00
2/22/2018 0.01
2/23/2018 0.16
2/24/2018 0.05
2/25/2018 0.33
2/26/2018 0.03
2/27/2018 0.01
2/28/2018 0.00
3/1/2018 0.00
3/2/2018 0.15
3/3/2018 0.01
3/4/2018 0.00
3/5/2018 0.00
3/6/2018 0.00
3/7/2018 0.16
3/8/2018 0.02
3/9/2018 0.00
3/10/2018 0.00
3/11/2018 0.00
3/12/2018 0.00
3/13/2018 0.00
3/14/2018 0.00
3/15/2018 0.00
3/16/2018 0.00
3/17/2018 T
3/18/2018 0.01
3/19/2018 0.00
3/20/2018 0.28
3/21/2018 0.92
3/22/2018 0.51
3/23/2018 0.00
3/24/2018 0.00
3/25/2018 0.00
3/26/2018 0.00
3/27/2018 0.00
3/28/2018 0.08
3/29/2018 **
3/30/2018 **
3/31/2018 **
Day of YearDaily PrcpMultiday Prcp
4/1/2018 **
4/2/2018 0.31
4/3/2018 T
4/4/2018 0.02
4/5/2018 0.02
4/6/2018 0.00
4/7/2018 0.01
4/8/2018 T
4/9/2018 0.00
4/10/2018 0.03
4/11/2018 0.00
4/12/2018 0.00
4/13/2018 0.00
4/14/2018 0.00
4/15/2018 0.00
4/16/2018 2.45
4/17/2018 0.16
4/18/2018 0.00
4/19/2018 0.01
4/20/2018 0.05
4/21/2018 0.00
4/22/2018 0.00
4/23/2018 0.00
4/24/2018 0.00
4/25/2018 0.74
4/26/2018 0.24
4/27/2018 0.84
4/28/2018 0.02
4/29/2018 0.02
4/30/2018 0.00
5/1/2018 0.00
5/2/2018 0.00
5/3/2018 0.00
5/4/2018 0.00
5/5/2018 0.01
5/6/2018 0.02
5/7/2018 T
5/8/2018 0.00
5/9/2018 0.00
5/10/2018 0.00
5/11/2018 T
5/12/2018 0.00
5/13/2018 0.38
5/14/2018 0.15
5/15/2018 1.90
5/16/2018 0.14
5/17/2018 0.51
5/18/2018 1.44
5/19/2018 1.89
5/20/2018 0.08
5/21/2018 0.01
5/22/2018 T
5/23/2018 1.54
5/24/2018 0.00
5/25/2018 0.00
5/26/2018 0.00
5/27/2018 0.02
5/28/2018 0.05
5/29/2018 0.01
5/30/2018 0.00
5/31/2018 0.19
6/1/2018 2.02
6/2/2018 0.03
6/3/2018 0.65
6/4/2018 1.10
6/5/2018 0.00
6/6/2018 0.02
6/7/2018 0.00
6/8/2018 0.00
6/9/2018 0.00
6/10/2018 0.14
6/11/2018 0.46
6/12/2018 **
6/13/2018 **
6/14/2018 **
6/15/2018 **
6/16/2018 **
6/17/2018 **
6/18/2018 **
6/19/2018 **
6/20/2018 **
6/21/2018 **
6/22/2018 **
6/23/2018 **
6/24/2018 **
6/25/2018 1.59
6/26/2018 0.00
6/27/2018 0.00
6/28/2018 0.08
6/29/2018 0.00
6/30/2018 0.00
Day of YearDaily PrcpMultiday Prcp
7/1/2018 0.00
7/2/2018 0.00
7/3/2018 0.00
7/4/2018 T
7/5/2018 0.00
7/6/2018 0.05
7/7/2018 0.04
7/8/2018 0.00
7/9/2018 0.00
7/10/2018 0.00
7/11/2018 0.00
7/12/2018 0.00
7/13/2018 0.00
7/14/2018 0.00
7/15/2018 0.00
7/16/2018 T
7/17/2018 0.36
7/18/2018 1.40
7/19/2018 0.00
7/20/2018 0.00
7/21/2018 0.01
7/22/2018 5.05
7/23/2018 1.48
7/24/2018 1.91
7/25/2018 0.11
7/26/2018 0.61
7/27/2018 0.00
7/28/2018 0.05
7/29/2018 0.00
7/30/2018 0.00
7/31/2018 1.04
8/1/2018 1.96
8/2/2018 0.83
8/3/2018 0.37
8/4/2018 0.58
8/5/2018 0.00
8/6/2018 0.17
8/7/2018 0.14
8/8/2018 0.05
8/9/2018 T
8/10/2018 0.00
8/11/2018 **
8/12/2018 **
8/13/2018 **
8/14/2018 **
8/15/2018 0.23
8/16/2018 0.00
8/17/2018 0.00
8/18/2018 0.09
8/19/2018 T
8/20/2018 T
8/21/2018 T
8/22/2018 1.38
8/23/2018 0.02
8/24/2018 0.00
8/25/2018 0.00
8/26/2018 0.00
8/27/2018 0.00
8/28/2018 T
8/29/2018 0.00
8/30/2018 0.01
8/31/2018 0.12
9/1/2018 0.04
9/2/2018 0.73
9/3/2018 0.00
9/4/2018 0.00
9/5/2018 0.01
9/6/2018 0.00
9/7/2018 0.01
9/8/2018 0.79
9/9/2018 0.65
9/10/2018 0.89
9/11/2018 0.07
9/12/2018 0.04
9/13/2018 0.04
9/14/2018 0.03
9/15/2018 0.01
9/16/2018 0.00
9/17/2018 0.00
9/18/2018 0.82
9/19/2018 0.14
9/20/2018 0.00
9/21/2018 0.00
9/22/2018 0.09
9/23/2018 0.12
9/24/2018 0.85
9/25/2018 0.85
9/26/2018 0.02
9/27/2018 0.08
9/28/2018 1.62
9/29/2018 0.00
9/30/2018 0.00



Observation Date Observation Time Precipitation Snowfall Snowfall SWE Snow Depth Snow SWE Notes
10/1/2017 8:00 AM 0.00 0.0 M M M
10/2/2017 7:20 AM 0.00 0.0 M M M
10/3/2017 8:00 AM 0.00 0.0 M M M
10/4/2017 8:00 AM 0.00 0.0 M M M
10/5/2017 8:00 AM 0.00 0.0 M M M
10/6/2017 8:00 AM T M M M M I swear that 3 raindrops hit me while outside yesterday afternoon. So dry for so long!
10/7/2017 8:00 AM 0.00 0.0 M M M
10/8/2017 8:00 AM 0.01 M M M M I hope this is just the down payment for what we're owed, for weeks of 0's.
10/9/2017 7:15 AM 0.58 M M M M Yay rain! Remnants of Hurricane Nate. Slight breeze but a lot of yellow leaves knocked down.
10/10/2017 8:00 AM 0.16 M M M M end of TS Nate
10/11/2017 7:45 AM 0.02 M M M M light rain at time of reading
10/12/2017 8:00 AM 0.42 M M M M Submitted via CoCoRaHS Observer for Android version 2.1.0 (build 21001)
10/13/2017 8:00 AM 0.01 M M M M misty day
10/14/2017 8:00 AM 0.01 M M M M Submitted via CoCoRaHS Observer for Android version 2.1.0 (build 21001)
10/15/2017 8:00 AM 0.02 M M M M Submitted via CoCoRaHS Observer for Android version 2.1.0 (build 21001)
10/16/2017 8:00 AM 0.06 M M M M Submitted via CoCoRaHS Observer for Android version 2.1.0 (build 21001)
10/17/2017 8:00 AM 0.01 M M M M
10/18/2017 8:00 AM 0.00 0.0 M M M so glad to finally have normal October temps. It's been too warm!
10/19/2017 7:45 AM 0.00 0.0 M M M
10/20/2017 8:00 AM 0.00 0.0 M M M
10/21/2017 8:00 AM 0.00 0.0 M M M
10/22/2017 8:00 AM 0.00 0.0 M M M
10/23/2017 8:00 AM 0.00 0.0 M M M
10/24/2017 8:00 AM 0.23 M M M M Submitted via CoCoRaHS Observer for Android version 2.1.0 (build 21001)
10/25/2017 8:00 AM 0.00 0.0 M M M
10/26/2017 7:00 AM T M M M M Submitted via CoCoRaHS Observer for Android version 2.1.0 (build 21001)
10/27/2017 8:00 AM 0.00 0.0 M M M
10/28/2017 8:30 AM 0.00 0.0 M M M
10/29/2017 8:00 AM 0.07 M M M M
10/30/2017 8:00 AM 1.12 M M M M TS Philippe passed up the East Coast. Heaviest rain during the night. Still breezy at time of reading.
10/31/2017 8:00 AM 0.00 0.0 M M M
11/1/2017 8:00 AM 0.00 0.0 M M M
11/2/2017 8:00 AM 0.01 M M M M
11/3/2017 8:00 AM 0.00 0.0 M M M
11/4/2017 8:00 AM T M M M M A few raindrops during the afternoon.
11/5/2017 8:00 AM 0.71 M M M M Nice soaking rain began in the evening and continued overnight. Light rain at time of reading.
11/6/2017 7:45 AM 0.04 M M M M Submitted via CoCoRaHS Observer for Android version 2.1.0 (build 21001)
11/7/2017 8:00 AM 0.01 M M M M
11/8/2017 8:00 AM 1.23 M M M M steady rain for much of the day
11/9/2017 8:00 AM 0.04 M M M M Submitted via CoCoRaHS Observer for Android version 2.1.0 (build 21001)
11/10/2017 8:00 AM 0.02 M M M M a little drizzle midday and evening
11/11/2017 8:00 AM 0.00 0.0 M M M
11/12/2017 8:00 AM 0.00 M M M M Submitted via CoCoRaHS Observer for Android version 2.1.0 (build 21001)
11/13/2017 8:00 AM 0.17 M M M M
11/14/2017 8:00 AM 0.00 0.0 M M M
11/15/2017 8:00 AM 0.00 0.0 M M M
11/16/2017 8:00 AM 0.01 M M M M
11/17/2017 8:00 AM 0.00 0.0 M M M
11/18/2017 8:00 AM 0.00 0.0 M M M
11/19/2017 8:00 AM 0.16 M M M M smattering of rain in the afternoon, more late night
11/20/2017 8:00 AM T M M M M experienced about 20 raindrops while outside
11/21/2017 8:00 AM 0.00 0.0 M M M
11/22/2017 8:00 AM T M M M M
11/23/2017 8:00 AM 0.00 0.0 M M M
11/24/2017 8:00 AM 0.00 0.0 M M M
11/25/2017 8:00 AM 0.00 0.0 M M M
11/26/2017 8:00 AM 0.00 0.0 M M M
11/27/2017 8:00 AM 0.00 0.0 M M M
11/28/2017 8:00 AM 0.00 0.0 M M M
11/29/2017 8:00 AM 0.00 0.0 M M M mild day - 60 degrees. Some leaves still on trees.
11/30/2017 7:45 AM 0.00 0.0 M M M another mild day, in the 60's.
12/1/2017 8:00 AM 0.04 M M M M brief late-evening shower
12/2/2017 8:00 AM 0.00 0.0 M M M
12/3/2017 8:00 AM 0.04 M M M M early morning shower
12/4/2017 7:45 AM 0.00 0.0 M M M
12/5/2017 8:00 AM 0.00 0.0 M M M
12/6/2017 8:00 AM 0.13 M M M M light afternoon-evening rain
12/7/2017 7:30 AM 0.00 M M M M
12/8/2017 8:00 AM 0.00 0.0 M M M
12/9/2017 8:00 AM T T M 0.0 M snow began in pre-dawn hours I presume. Light flakes coming down at time of reading. Only sticking to grassy areas, melted elsewhere. Expect some accumulation today.
12/10/2017 8:00 AM 0.22 2.8 M 2.5 M flurries much of the day, ending after sunset. Mostly melted on roads and hard surfaces.
12/11/2017 8:00 AM 0.00 0.0 M M M
12/12/2017 8:00 AM 0.00 0.0 M T M still a tiny amount of snow in shady spots
12/13/2017 7:30 AM 0.00 M M M M
12/14/2017 8:00 AM 0.00 M M M M
12/15/2017 8:00 AM 0.00 M M M M
12/16/2017 8:00 AM 0.03 0.0 M T M light snow all afternoon. thank goodness it wasn't sleet
12/17/2017 8:00 AM 0.00 0.0 M 0.0 M
12/18/2017 8:00 AM T M M M M a few sprinkles in the evening
12/19/2017 8:00 AM 0.00 0.0 M M M
12/20/2017 8:00 AM 0.00 0.0 M M M
12/21/2017 8:00 AM 0.00 0.0 M M M
12/22/2017 8:00 AM 0.00 0.0 M M M
12/23/2017 8:00 AM 0.06 M M M M rain overnight
12/24/2017 8:00 AM 0.28 0.0 M M M rain from the afternoon into the evening, a bit heavy late evening
12/25/2017 8:00 AM 0.00 0.0 M M M
12/26/2017 8:00 AM 0.00 0.0 M M M
12/27/2017 8:00 AM 0.00 0.0 M M M
12/28/2017 8:00 AM T T M M M
12/29/2017 8:00 AM 0.00 0.0 M M M
12/30/2017 8:00 AM 0.03 0.3 M 0.3 M bit of fluffy snow, after midnight
12/31/2017 8:00 AM 0.00 0.0 M M M
1/1/2018 8:00 AM T T M T M A few flakes fell in the afternoon. Snow persists on grass and street particularly in shadier spots.
1/2/2018 8:00 AM 0.00 0.0 M T M
1/3/2018 8:00 AM 0.00 0.0 M T M Cold temps allow snow to persist, here and there
1/4/2018 8:00 AM 0.07 1.0 M 1.0 M Powdery snow. Caught the edge of the major winter storm going up the coast. Still a few flakes in the air this morning, winds picking up - brrrr.
1/5/2018 8:00 AM T T M 0.5 M
1/6/2018 8:00 AM 0.00 0.0 M 0.5 M
1/7/2018 8:00 AM 0.00 0.0 M T M lawn still covered with snow, but grass blades sticking through. Very cold and wind persists through the day
1/8/2018 8:00 AM 0.00 0.0 M T M
1/9/2018 8:00 AM 0.06 M M T M light rain, some froze to surfaces
1/10/2018 8:00 AM 0.00 0.0 M T M snow remnants in shady areas
1/11/2018 8:00 AM 0.00 0.0 M T M a few humps of snow that just won't melt
1/12/2018 7:20 AM 0.12 M M M M
1/13/2018 8:00 AM 0.88 0.0 M 0.0 M showers, particularly one brief but heavy one in the evening. Very mild temps during the day, in the 60's. At time of reading, quite windy, just above freezing.
1/14/2018 8:00 AM 0.00 0.0 M M M
1/15/2018 8:00 AM 0.00 M M M M
1/16/2018 8:00 AM T T M T M Dusting of snow overnight
1/17/2018 8:00 AM 0.04 0.5 T 0.5 M flurries overnight
1/18/2018 8:00 AM 0.00 0.0 M T M
1/19/2018 8:00 AM 0.00 0.0 M T M
1/20/2018 8:00 AM 0.00 0.0 M T M
1/21/2018 8:00 AM 0.00 0.0 M 0.0 M temps near 60 degrees finally melted remainder of snow
1/22/2018 8:00 AM 0.00 0.0 M M M
1/23/2018 8:00 AM 0.12 M M M M
1/24/2018 8:00 AM 0.00 M M M M
1/25/2018 8:00 AM 0.00 0.0 M M M
1/26/2018 7:45 AM 0.00 0.0 M M M
1/27/2018 8:00 AM 0.00 M M M M
1/28/2018 8:00 AM 0.04 M M M M
1/29/2018 8:00 AM 0.15 M M M M very light rain most of the day
1/30/2018 8:00 AM T T M T M just a few flakes of snow
1/31/2018 8:00 AM 0.00 0.0 M M M
2/1/2018 7:20 AM 0.00 0.0 M M M
2/2/2018 8:00 AM 0.14 M M M M rain overnight
2/3/2018 8:00 AM T T M M M
2/4/2018 8:00 AM 0.00 0.0 M M M
2/5/2018 8:00 AM 1.14 T M M M Started around 10 a.m. as snow, quickly changed to sleet, then cold rain most of the rest of the daylight hours. Tree branches had a thin coating of ice. Roads did not freeze, thank goodness.
2/6/2018 8:00 AM 0.00 0.0 M M M
2/7/2018 8:00 AM 0.01 M M M M
2/8/2018 8:00 AM 0.45 M M M M
2/9/2018 8:00 AM 0.00 0.0 M M M
2/10/2018 8:00 AM 0.00 0.0 M M M
2/11/2018 9:00 AM 1.62 M M M M rain, heavy at times, almost all day. Raining at time of reading.
2/12/2018 8:00 AM 0.09 M M M M
2/13/2018 8:00 AM 0.04 M M M M
2/14/2018 8:00 AM 0.01 M M M M
2/17/2018 8:00 AM 0.05 M M M M
2/18/2018 8:30 AM 0.47 1.5 M 0.5 M sleet/snow began mid-afternoon, all snow continued past sunset. much had melted by time of reading
2/19/2018 8:00 AM 0.04 M M M M
2/20/2018 8:00 AM T M M M M Drizzly day, surprised there wasn't more in the tube
2/21/2018 8:00 AM 0.00 0.0 M M M
2/22/2018 8:00 AM 0.01 M M M M
2/23/2018 7:30 AM 0.16 M M M M
2/24/2018 8:00 AM 0.05 M M M M very foggy morning
2/25/2018 8:45 AM 0.33 M M M M just a rainy day
2/26/2018 8:00 AM 0.03 M M M M
2/27/2018 8:00 AM 0.01 M M M M
2/28/2018 8:00 AM 0.00 0.0 M M M
3/1/2018 8:00 AM 0.00 0.0 M M M
3/2/2018 7:30 AM 0.15 T M T M Extremely high winds, scary! One of our mature pines has lost its top 10 feet, luckily blew away from the house. Screen blew out of the door frame on our screened porch. Snowflakes in the air at time of reading. Worst winds I've experienced in at least 20 years.
3/3/2018 8:00 AM 0.01 M M M M Lost power at 2 pm and still out. winds have decreased to reasonable level. much tree damage in area.
3/4/2018 8:00 AM 0.00 0.0 M M M Still breezy. Power company reports over 60,000 still without power in northern VA. Happy to have ours back yesterday afternoon. Can't imagine what is has been like in Puerto Rico since their hurricane.
3/5/2018 8:00 AM 0.00 0.0 M M M Just a light breeze at time of reading. Still 18,000 without power just in Northern VA.
3/6/2018 8:00 AM 0.00 0.0 M M M
3/7/2018 8:00 AM 0.16 M M M M Misting at time of reading. May have been a little snow in the air overnight but it's all melted.
3/8/2018 8:00 AM 0.02 M M M M
3/9/2018 8:00 AM 0.00 0.0 M M M
3/10/2018 8:00 AM 0.00 0.0 M M M
3/11/2018 8:00 AM 0.00 0.0 M M M
3/12/2018 7:45 AM 0.00 0.0 M M M
3/13/2018 8:00 AM 0.00 M M M M
3/14/2018 8:00 AM 0.00 0.0 M M M
3/15/2018 8:00 AM 0.00 0.0 M M M
3/16/2018 8:00 AM 0.00 0.0 M M M
3/17/2018 8:00 AM T T M 0.0 M Just a few snowflakes right after yesterday's reading
3/18/2018 8:00 AM 0.01 M M M M
3/19/2018 8:00 AM 0.00 0.0 M M M
3/20/2018 8:00 AM 0.28 M M M M all rain; expecting sleet or snow before it ends tomorrow
3/21/2018 8:30 AM 0.92 1.7 M 1.5 M Cold rain yesterday morning, changed over to wet snow in the mid-afternoon. Paused in the evening, restarted in the very early morning. A 1/10" sleeve of ice on twigs and pine needles. Ground slushy under the snow. Snowing steadily at time of reading.
3/22/2018 8:00 AM 0.51 5.0 M 4.5 M Snowed until around 5 PM, measured 5" deep at that point. Has settled/melted a bit since.
3/23/2018 8:00 AM 0.00 0.0 M T M snow lumps remain in shady spots
3/24/2018 8:00 AM 0.00 0.0 M T M snow piles remain in shady areas
3/25/2018 8:00 AM 0.00 0.0 M T M
3/26/2018 8:00 AM 0.00 0.0 M T M
3/27/2018 8:00 AM 0.00 0.0 M T M
3/28/2018 8:00 AM 0.08 0.0 M T M light rain, stubborn snow lumps
4/3/2018 8:00 AM T M M M M
4/4/2018 8:00 AM 0.02 M M M M
4/5/2018 8:00 AM 0.02 M M M M
4/6/2018 8:00 AM 0.00 0.0 M M M
4/7/2018 8:00 AM 0.01 M M M M
4/8/2018 8:00 AM T T M 0.0 M Witnessed a bit of wet snow in late morning, instantly melted. Equivalent to a sprinkle of rain. Hope that's finally it for winter.
4/9/2018 8:00 AM 0.00 0.0 M M M
4/10/2018 8:00 AM 0.03 T M 0.0 M Yes, some came down as snowflakes. Maybe that was the last time!
4/11/2018 8:00 AM 0.00 M M M M
4/12/2018 7:20 AM 0.00 0.0 M M M
4/13/2018 8:00 AM 0.00 0.0 M M M
4/14/2018 8:00 AM 0.00 0.0 M M M
4/15/2018 8:00 AM 0.00 0.0 M M M
4/16/2018 8:00 AM 2.45 M M M M
4/17/2018 8:00 AM 0.16 M M M M
4/18/2018 8:00 AM 0.00 0.0 M M M
4/19/2018 7:30 AM 0.01 M M M M sprinkling at time of reading
4/20/2018 8:00 AM 0.05 M M M M
4/21/2018 8:00 AM 0.00 0.0 M M M
4/22/2018 8:00 AM 0.00 0.0 M M M
4/23/2018 8:00 AM 0.00 0.0 M M M
4/24/2018 8:00 AM 0.00 0.0 M M M
4/25/2018 8:00 AM 0.74 M M M M Nice gentle soaking rain, afternoon and night
4/26/2018 8:00 AM 0.24 M M M M
4/27/2018 8:00 AM 0.84 M M M M
4/28/2018 8:00 AM 0.02 M M M M light fog. sprinkles yesterday morning
4/29/2018 8:00 AM 0.02 M M M M
4/30/2018 7:30 AM 0.00 0.0 M M M
5/1/2018 8:00 AM 0.00 0.0 M M M
5/2/2018 8:00 AM 0.00 0.0 M M M
5/3/2018 8:00 AM 0.00 0.0 M M M
5/4/2018 8:00 AM 0.00 0.0 M M M
5/5/2018 8:00 AM 0.01 M M M M
5/6/2018 8:00 AM 0.02 M M M M
5/7/2018 8:00 AM T M M M M
5/8/2018 8:00 AM 0.00 0.0 M M M
5/9/2018 8:00 AM 0.00 0.0 M M M
5/10/2018 8:00 AM 0.00 0.0 M M M
5/11/2018 8:00 AM T M M M M The lines of storms part over Fairfax County. Not much more than a few thunder rumbles.
5/12/2018 8:00 AM 0.00 0.0 M M M
5/13/2018 8:00 AM 0.38 M M M M
5/14/2018 8:00 AM 0.15 M M M M
5/15/2018 8:00 AM 1.90 M M M M Two frightening storms. Strong front (one weatherman said it qualified as a derecho) came through around 6:30-7:00 PM, very strong winds, some lightning, hail (submitted report). Woken 3:30AM with intense storm, frequent bright lightning (every few seconds) and LOUD thunder. Lasted about half an hour; some rain with it.
5/16/2018 7:45 AM 0.14 M M M M
5/17/2018 8:00 AM 0.51 M M M M rain showers most of the day, continuing at time of reading
5/18/2018 8:00 AM 1.44 M M M M rainy day. no standing water but ground fairly saturated
5/19/2018 8:00 AM 1.89 M M M M
5/20/2018 8:00 AM 0.08 M M M M lovely sunshine at time of reading
5/21/2018 8:00 AM 0.01 M M M M
5/22/2018 7:30 AM T M M M M
5/23/2018 8:00 AM 1.54 M M M M some morning rain, and a late afternoon monsoon with thunder. Very humid day, so much to evaporate!
5/24/2018 8:00 AM 0.00 0.0 M M M
5/25/2018 8:00 AM 0.00 0.0 M M M
5/26/2018 8:00 AM 0.00 0.0 M M M
5/27/2018 8:00 AM 0.02 M M M M
5/28/2018 8:00 AM 0.05 M M M M
5/29/2018 8:00 AM 0.01 M M M M
5/30/2018 8:00 AM 0.00 0.0 M M M
5/31/2018 8:30 AM 0.19 M M M M
6/1/2018 8:00 AM 2.02 M M M M All but .10 from a torrent between 6 and 7 PM. One shower a few hours later. Did a significant weather report.
6/2/2018 8:00 AM 0.03 M M M M
6/3/2018 9:00 AM 0.65 M M M M
6/4/2018 8:00 AM 1.10 M M M M rain pretty much all day
6/5/2018 8:00 AM 0.00 0.0 M M M Lovely sunny dry day
6/6/2018 8:00 AM 0.02 M M M M
6/7/2018 7:45 AM 0.00 0.0 M M M
6/8/2018 7:45 AM 0.00 0.0 M M M
6/9/2018 8:00 AM 0.00 0.0 M M M
6/10/2018 8:00 AM 0.14 M M M M Mild thunderstorm. much larger one to our south, Lorton, but no reports there. :(
6/11/2018 8:00 AM 0.46 M M M M showers
6/26/2018 8:00 AM 0.00 M M M M
6/27/2018 8:00 AM 0.00 0.0 M M M
6/28/2018 8:00 AM 0.08 M M M M
6/29/2018 7:00 AM 0.00 0.0 M M M
6/30/2018 8:00 AM 0.00 0.0 M M M
7/1/2018 8:00 AM 0.00 0.0 M M M
7/2/2018 8:00 AM 0.00 M M M M
7/3/2018 8:00 AM 0.00 M M M M
7/4/2018 7:30 AM T M M M M About 3 drops of rain, while a thunderstorm passed by to the south. Happy Independence Day, USA, and many more to come.
7/5/2018 8:00 AM 0.00 0.0 M M M
7/6/2018 8:00 AM 0.05 M M M M 6 a.m. shower
7/7/2018 8:00 AM 0.04 M M M M
7/8/2018 8:00 AM 0.00 0.0 M M M A really lovely day, moderate temps, low humidity, blue sky with puffy clouds...a nice break from the blast furnace
7/9/2018 8:00 AM 0.00 0.0 M M M
7/10/2018 8:00 AM 0.00 0.0 M M M
7/11/2018 7:45 AM 0.00 0.0 M M M
7/12/2018 8:00 AM 0.00 0.0 M M M
7/13/2018 8:00 AM 0.00 0.0 M M M
7/14/2018 8:00 AM 0.00 0.0 M M M
7/15/2018 8:00 AM 0.00 0.0 M M M
7/16/2018 8:00 AM T M M M M A few rumbles of thunder, storm to SW of us. Could really, really use some rain. Baked dry for a few weeks now.
7/17/2018 8:00 AM 0.36 M M M M Hurray, rain!
7/18/2018 8:00 AM 1.40 M M M M afternoon monsoon. much needed.
7/19/2018 8:00 AM 0.00 0.0 M M M
7/20/2018 8:00 AM 0.00 0.0 M M M
7/21/2018 8:00 AM 0.01 M M M M
7/22/2018 8:00 AM 5.05 M M M M poured for hours, the sort of rain I'd expect from a hurricane (without the wind)
7/23/2018 8:00 AM 1.48 M M M M storms and thunderstorms
7/24/2018 8:00 AM 1.91 M M M M Lots of rain through the period, some very heavy showers. Street flooding in the area. Ground has gone from dry (first half of July) to saturated.
7/25/2018 8:00 AM 0.11 M M M M cloudy day, less came of it. still, some flooded roads in the morning
7/26/2018 8:00 AM 0.61 M M M M Cloudy all day, a dinnertime cloud produced most of this total with a downpour.
7/27/2018 8:00 AM 0.00 0.0 M M M Good to see zeros again.
7/28/2018 8:00 AM 0.05 M M M M
7/29/2018 8:00 AM 0.00 0.0 M M M
7/30/2018 7:30 AM 0.00 0.0 M M M
7/31/2018 8:00 AM 1.04 M M M M mostly a late afternoon downpour
8/1/2018 8:00 AM 1.96 M M M M Mostly after 11 PM on, but surprised to see this much in the tube. Some major streets flooded in the area. Last half of July was submerged, after the first half was dry.
8/2/2018 8:00 AM 0.83 M M M M thunderstorm after 11 pm
8/3/2018 8:00 AM 0.37 M M M M surprise, more rain. Mostly from a mild afternoon thunderstorm. Other storms passed by the neighborhood.
8/4/2018 8:00 AM 0.58 M M M M showers, briefly heavy. ground is soggy.
8/5/2018 8:00 AM 0.00 0.0 M M M Hurray, a zero
8/6/2018 8:00 AM 0.17 M M M M mild thunderstorm developed overhead and wrung itself out
8/7/2018 8:00 AM 0.14 M M M M Another dinnertime pop-up thunderstorm
8/8/2018 8:00 AM 0.05 M M M M
8/9/2018 8:00 AM T M M M M
8/10/2018 8:00 AM 0.00 0.0 M M M
8/16/2018 8:00 AM 0.00 0.0 M M M
8/17/2018 8:00 AM 0.00 0.0 M M M
8/18/2018 8:00 AM 0.09 M M M M mild 6 pm thunderstorm
8/19/2018 8:00 AM T M M M M just barely sprinkled in the afternoon
8/20/2018 8:00 AM T M M M M
8/21/2018 8:00 AM T M M M M
8/22/2018 8:00 AM 1.38 M M M M Mostly from a downpour in the afternoon, mild thunderstorm. More rain in the evening and night.
8/23/2018 8:00 AM 0.02 M M M M
8/24/2018 8:00 AM 0.00 0.0 M M M
8/25/2018 8:00 AM 0.00 0.0 M M M
8/26/2018 8:00 AM 0.00 0.0 M M M
8/27/2018 7:30 AM 0.00 0.0 M M M
8/28/2018 8:00 AM T M M M M two episodes of very light rain, around 4 and 6 PM - just a passing large cloud during a very humid day
8/29/2018 8:00 AM 0.00 0.0 M M M
8/30/2018 8:00 AM 0.01 M M M M
8/31/2018 8:00 AM 0.12 M M M M middle of the night rain, a little distant thunder
9/1/2018 8:00 AM 0.04 M M M M lighting storm split to go around us, lasted for hours
9/2/2018 8:00 AM 0.73 M M M M another stormy evening, but lightning keeps its distance
9/3/2018 8:00 AM 0.00 0.0 M M M
9/4/2018 8:00 AM 0.00 0.0 M M M
9/5/2018 8:00 AM 0.01 M M M M hot and sooooo humid, very unpleasant
9/6/2018 7:50 AM 0.00 0.0 M M M
9/7/2018 8:00 AM 0.01 M M M M
9/8/2018 8:00 AM 0.79 M M M M
9/9/2018 8:00 AM 0.65 M M M M lots of showers
9/10/2018 8:00 AM 0.89 M M M M Lots of showers continue yet another day, remnants of Gordon (I guess). Very cool - not over 70 degrees!
9/11/2018 8:00 AM 0.07 M M M M light mist, fog, very damp
9/12/2018 8:00 AM 0.04 M M M M Dreary drizzly day
9/13/2018 8:00 AM 0.04 M M M M
9/14/2018 8:00 AM 0.03 M M M M Just grazed by an outer band of Florence, far off in the Carolinas. Thank goodness; our ground still saturated. Major river flooding in Alexandria earlier this week.
9/15/2018 7:30 AM 0.01 M M M M
9/16/2018 8:00 AM 0.00 0.0 M M M
9/17/2018 8:00 AM 0.00 M M M M
9/18/2018 8:00 AM 0.82 M M M M remnants of Florence. various intensities of showers. really loud thunderstorm around 12:30 a.m.
9/19/2018 8:00 AM 0.14 M M M M parting shot from Florence. blue sky in the afternoon.
9/20/2018 8:00 AM 0.00 M M M M
9/21/2018 8:00 AM 0.00 M M M M
9/22/2018 8:00 AM 0.09 M M M M
9/23/2018 8:00 AM 0.12 M M M M
9/24/2018 8:00 AM 0.85 M M M M rain, light to medium intensities, through the day
9/25/2018 8:00 AM 0.85 M M M M rain pretty much all day, again. totally unnecessary.
9/26/2018 8:00 AM 0.02 M M M M
9/27/2018 8:00 AM 0.08 M M M M
9/28/2018 8:00 AM 1.62 M M M M plus we had a plumbing disaster in the basement - too much water, inside and out
9/29/2018 8:00 AM 0.00 0.0 M M M
9/30/2018 8:00 AM 0.00 0.0 M M M lovely zeroes



Start Date End Date & Time Duration in Days Precipitation Snow Depth Snow Depth SWE Notes
2/15/2018 2/16/2018 8:00 AM 2 0.16 M M two days of intermittent showers. also a record high yesterday, it was 75 degrees here.
3/29/2018 4/02/2018 8:00 AM 5 0.31 0.0 M
6/12/2018 6/25/2018 8:00 AM 14 1.59 M M
8/11/2018 8/15/2018 8:00 AM 5 0.23 M M



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
5/14/2018 6:35 PM Viewed from window. Melted before I dared go out. Maybe 1 foot apart. 1/4" Pea Size 1/4" Pea Size 1/4" Pea Size 5 1min no damage Continuous True After rain