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 14 3.55 3.59 31 3.36 26 0.23 5 1 11 1 0.0 0 0
Nov 14 3.35 3.11 30 3.11 30 0.00 0 0 9 1 1.0 1 1
Dec 14 3.17 4.02 31 4.02 31 0.00 0 0 12 2 0.0 0 0
Jan 15 2.94 3.34 31 1.98 27 1.36 4 1 12 4 4.5 3 10
Feb 15 2.74 1.94 28 1.94 28 0.00 0 0 8 3 13.7 5 13
March 15 3.67 4.61 31 4.61 31 0.00 0 0 14 0 7.0 3 11
April 15 3.34 3.19 30 3.19 30 0.00 0 0 15 2 0.0 0 0
May 15 4.24 3.51 29 2.89 25 0.62 4 1 6 3 0.0 0 0
June 15 3.98 9.67 30 9.58 26 0.09 4 1 15 0 0.0 0 0
July 15 4.03 5.63 31 5.63 31 0.00 0 0 19 2 0.0 0 0
Aug 15 3.36 0.56 31 0.56 31 0.00 0 0 7 3 0.0 0 0
Sept 15 4.00 3.14 30 3.09 26 0.05 4 1 6 1 0.0 0 0
Water Year Totals: 42.37" 46.31" 363 days 43.96" 342 2.35" 21 days 5 134 days 22 days 26.2" 12 days 35 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 **
10/5/2014 0.23
10/6/2014 0.00
10/7/2014 T
10/8/2014 0.50
10/9/2014 0.00
10/10/2014 0.00
10/11/2014 0.42
10/12/2014 0.07
10/13/2014 0.00
10/14/2014 0.13
10/15/2014 0.09
10/16/2014 0.85
10/17/2014 0.15
10/18/2014 0.00
10/19/2014 0.00
10/20/2014 0.00
10/21/2014 0.01
10/22/2014 0.58
10/23/2014 0.50
10/24/2014 0.00
10/25/2014 0.00
10/26/2014 0.00
10/27/2014 0.00
10/28/2014 0.00
10/29/2014 0.00
10/30/2014 0.06
10/31/2014 0.00
11/1/2014 0.01
11/2/2014 0.00
11/3/2014 0.00
11/4/2014 0.00
11/5/2014 0.00
11/6/2014 0.42
11/7/2014 0.14
11/8/2014 0.00
11/9/2014 0.00
11/10/2014 0.00
11/11/2014 0.00
11/12/2014 0.00
11/13/2014 0.00
11/14/2014 0.03
11/15/2014 0.00
11/16/2014 0.00
11/17/2014 0.23
11/18/2014 0.60
11/19/2014 0.00
11/20/2014 0.00
11/21/2014 0.00
11/22/2014 0.00
11/23/2014 0.00
11/24/2014 0.40
11/25/2014 0.00
11/26/2014 0.53
11/27/2014 0.75
11/28/2014 T
11/29/2014 0.00
11/30/2014 0.00
12/1/2014 0.00
12/2/2014 0.38
12/3/2014 0.41
12/4/2014 T
12/5/2014 0.01
12/6/2014 0.04
12/7/2014 0.72
12/8/2014 0.00
12/9/2014 0.32
12/10/2014 0.19
12/11/2014 0.00
12/12/2014 0.00
12/13/2014 0.00
12/14/2014 0.00
12/15/2014 0.00
12/16/2014 0.00
12/17/2014 0.43
12/18/2014 0.00
12/19/2014 0.00
12/20/2014 0.00
12/21/2014 0.00
12/22/2014 0.00
12/23/2014 0.42
12/24/2014 0.50
12/25/2014 0.50
12/26/2014 0.00
12/27/2014 0.00
12/28/2014 0.00
12/29/2014 0.10
12/30/2014 T
12/31/2014 0.00
Day of YearDaily PrcpMultiday Prcp
1/1/2015 0.00
1/2/2015 0.00
1/3/2015 0.12
1/4/2015 0.58
1/5/2015 0.06
1/6/2015 0.20
1/7/2015 0.08
1/8/2015 T
1/9/2015 0.00
1/10/2015 0.00
1/11/2015 0.00
1/12/2015 0.31
1/13/2015 0.36
1/14/2015 0.01
1/15/2015 0.00
1/16/2015 0.00
1/17/2015 0.00
1/18/2015 0.05
1/19/2015 0.03
1/20/2015 0.00
1/21/2015 T
1/22/2015 0.14
1/23/2015 0.00
1/24/2015 **
1/25/2015 **
1/26/2015 **
1/27/2015 1.36
1/28/2015 T
1/29/2015 0.00
1/30/2015 0.04
1/31/2015 T
2/1/2015 0.00
2/2/2015 0.12
2/3/2015 0.09
2/4/2015 0.00
2/5/2015 0.00
2/6/2015 0.00
2/7/2015 0.00
2/8/2015 0.00
2/9/2015 0.00
2/10/2015 0.15
2/11/2015 0.00
2/12/2015 0.00
2/13/2015 T
2/14/2015 0.00
2/15/2015 0.03
2/16/2015 0.00
2/17/2015 0.45
2/18/2015 0.00
2/19/2015 T
2/20/2015 T
2/21/2015 0.00
2/22/2015 0.98
2/23/2015 0.00
2/24/2015 0.00
2/25/2015 0.00
2/26/2015 0.09
2/27/2015 0.03
2/28/2015 0.00
3/1/2015 0.00
3/2/2015 0.47
3/3/2015 0.00
3/4/2015 0.06
3/5/2015 0.51
3/6/2015 0.71
3/7/2015 0.00
3/8/2015 0.00
3/9/2015 0.00
3/10/2015 0.00
3/11/2015 0.50
3/12/2015 0.01
3/13/2015 0.00
3/14/2015 0.35
3/15/2015 0.26
3/16/2015 0.00
3/17/2015 0.00
3/18/2015 0.00
3/19/2015 0.00
3/20/2015 0.49
3/21/2015 0.18
3/22/2015 0.00
3/23/2015 0.00
3/24/2015 0.00
3/25/2015 0.00
3/26/2015 0.01
3/27/2015 1.03
3/28/2015 0.02
3/29/2015 0.00
3/30/2015 0.01
3/31/2015 0.00
Day of YearDaily PrcpMultiday Prcp
4/1/2015 0.02
4/2/2015 0.00
4/3/2015 0.11
4/4/2015 0.17
4/5/2015 0.00
4/6/2015 0.00
4/7/2015 0.05
4/8/2015 0.14
4/9/2015 0.09
4/10/2015 0.02
4/11/2015 0.01
4/12/2015 0.00
4/13/2015 0.00
4/14/2015 0.38
4/15/2015 0.40
4/16/2015 0.00
4/17/2015 0.10
4/18/2015 T
4/19/2015 0.00
4/20/2015 1.28
4/21/2015 0.09
4/22/2015 0.00
4/23/2015 0.01
4/24/2015 0.00
4/25/2015 0.00
4/26/2015 0.32
4/27/2015 0.00
4/28/2015 T
4/29/2015 0.00
4/30/2015 0.00
5/1/2015 0.79
5/2/2015
5/3/2015
5/4/2015 0.00
5/5/2015 **
5/6/2015 **
5/7/2015 **
5/8/2015 0.62
5/9/2015 T
5/10/2015 T
5/11/2015 T
5/12/2015 0.00
5/13/2015 0.00
5/14/2015 0.00
5/15/2015 0.00
5/16/2015 0.00
5/17/2015 0.69
5/18/2015 0.01
5/19/2015 1.08
5/20/2015 0.00
5/21/2015 0.00
5/22/2015 0.31
5/23/2015 0.00
5/24/2015 0.00
5/25/2015 0.00
5/26/2015 0.00
5/27/2015 0.00
5/28/2015 0.01
5/29/2015 0.00
5/30/2015 0.00
5/31/2015 0.00
6/1/2015 0.01
6/2/2015 1.47
6/3/2015 0.11
6/4/2015 0.20
6/5/2015 0.40
6/6/2015 0.01
6/7/2015 0.00
6/8/2015 0.00
6/9/2015 0.80
6/10/2015 0.00
6/11/2015 0.00
6/12/2015 0.00
6/13/2015 **
6/14/2015 **
6/15/2015 **
6/16/2015 0.09
6/17/2015 0.00
6/18/2015 0.33
6/19/2015 1.20
6/20/2015 0.03
6/21/2015 1.98
6/22/2015 0.00
6/23/2015 0.00
6/24/2015 0.56
6/25/2015 0.00
6/26/2015 0.36
6/27/2015 0.34
6/28/2015 1.78
6/29/2015 0.00
6/30/2015 0.00
Day of YearDaily PrcpMultiday Prcp
7/1/2015 0.33
7/2/2015 0.04
7/3/2015 0.20
7/4/2015 0.05
7/5/2015 0.36
7/6/2015 0.03
7/7/2015 0.14
7/8/2015 T
7/9/2015 2.75
7/10/2015 0.03
7/11/2015 0.07
7/12/2015 0.00
7/13/2015 0.08
7/14/2015 0.05
7/15/2015 0.01
7/16/2015 T
7/17/2015 0.00
7/18/2015 0.00
7/19/2015 0.05
7/20/2015 0.00
7/21/2015 0.00
7/22/2015 0.00
7/23/2015 0.00
7/24/2015 0.00
7/25/2015 0.00
7/26/2015 0.00
7/27/2015 0.09
7/28/2015 0.48
7/29/2015 0.01
7/30/2015 0.43
7/31/2015 0.43
8/1/2015 0.00
8/2/2015 0.00
8/3/2015 0.00
8/4/2015 0.00
8/5/2015 T
8/6/2015 0.00
8/7/2015 0.02
8/8/2015 0.00
8/9/2015 0.00
8/10/2015 0.20
8/11/2015 0.06
8/12/2015 0.01
8/13/2015 0.00
8/14/2015 0.00
8/15/2015 0.00
8/16/2015 0.00
8/17/2015 0.00
8/18/2015 0.00
8/19/2015 T
8/20/2015 0.09
8/21/2015 0.04
8/22/2015 0.00
8/23/2015 0.00
8/24/2015 0.00
8/25/2015 0.14
8/26/2015 0.00
8/27/2015 0.00
8/28/2015 0.00
8/29/2015 0.00
8/30/2015 0.00
8/31/2015 T
9/1/2015 T
9/2/2015 0.00
9/3/2015 0.00
9/4/2015 0.00
9/5/2015 0.00
9/6/2015 0.00
9/7/2015 0.00
9/8/2015 0.00
9/9/2015 0.00
9/10/2015 0.11
9/11/2015 0.03
9/12/2015 0.04
9/13/2015 0.07
9/14/2015 0.00
9/15/2015 0.00
9/16/2015 0.00
9/17/2015 0.00
9/18/2015 0.00
9/19/2015 0.00
9/20/2015 0.00
9/21/2015 0.00
9/22/2015 0.23
9/23/2015 0.00
9/24/2015 0.00
9/25/2015 0.00
9/26/2015 **
9/27/2015 **
9/28/2015 **
9/29/2015 0.05
9/30/2015 2.61



Observation Date Observation Time Precipitation Snowfall Snowfall SWE Snow Depth Snow SWE Notes
10/6/2014 8:00 AM 0.00 0.0 M M M
10/7/2014 8:00 AM T M M M M
10/8/2014 8:00 AM 0.50 M M M M A couple of brief showers, noon-ish and before sunset; heavy rain around 10 PM with some thunder and wind
10/9/2014 8:00 AM 0.00 0.0 M M M
10/10/2014 7:20 AM 0.00 0.0 M M M
10/11/2014 8:00 AM 0.42 M M M M
10/12/2014 8:00 AM 0.07 M M M M light rain for several hours, in the first part of the day
10/13/2014 8:00 AM 0.00 0.0 M M M
10/14/2014 7:30 AM 0.13 M M M M
10/15/2014 6:40 AM 0.09 M M M M
10/16/2014 8:00 AM 0.85 M M M M rain, and heavy rain, yesterday during the day. Some scary dark low clouds too.
10/17/2014 8:00 AM 0.15 M M M M Misty light rain in the morning. A surprise shower around 10 PM, briefly heavy rain - someone opened the faucet right over our house.
10/18/2014 8:00 AM 0.00 0.0 M M M
10/19/2014 8:00 AM 0.00 0.0 M M M
10/20/2014 8:00 AM 0.00 0.0 M M M
10/21/2014 8:00 AM 0.01 M M M M brief shower just before midnight
10/22/2014 7:20 AM 0.58 M M M M rain showers began late afternoon; continued through time of reading
10/23/2014 8:00 AM 0.50 M M M M light rain for several hours, ending mid-afternoon
10/24/2014 8:00 AM 0.00 0.0 M M M
10/25/2014 8:00 AM 0.00 0.0 M M M
10/26/2014 8:00 AM 0.00 0.0 M M M
10/27/2014 8:00 AM 0.00 0.0 M M M
10/28/2014 8:00 AM 0.00 0.0 M M M
10/29/2014 8:00 AM 0.00 0.0 M M M Last warm day of the year? (unseasonably so)
10/30/2014 8:00 AM 0.06 M M M M light to moderate rain in the afternoon
10/31/2014 8:00 AM 0.00 0.0 M M M
11/1/2014 8:40 AM 0.01 M M M M
11/2/2014 8:00 AM 0.00 0.0 M M M very cloudy all day, windy, but no precip. Summer's finally over.
11/3/2014 8:00 AM 0.00 0.0 M M M
11/4/2014 8:00 AM 0.00 0.0 M M M
11/5/2014 8:00 AM 0.00 0.0 M M M
11/6/2014 8:00 AM 0.42 M M M M
11/7/2014 8:00 AM 0.14 M M M M
11/8/2014 7:45 AM 0.00 0.0 M M M
11/9/2014 8:00 AM 0.00 0.0 M M M
11/10/2014 8:00 AM 0.00 0.0 M M M
11/11/2014 8:00 AM 0.00 0.0 M M M
11/12/2014 7:45 AM 0.00 0.0 M M M quite foggy at time of report
11/13/2014 8:00 AM 0.00 0.0 M M M
11/14/2014 8:00 AM 0.03 M M M M light rain after sunset, didn't see any snow.
11/15/2014 8:00 AM 0.00 0.0 M M M
11/16/2014 8:00 AM 0.00 0.0 M M M
11/17/2014 7:45 AM 0.23 M M M M light rain began around 4 pm, some moderate showers after sunset. Showers continue through today.
11/18/2014 8:00 AM 0.60 M M M M light rain till mid-afternoon. VERY COLD at time of reading - wind chill in the teens! Ice in the tube.
11/19/2014 7:30 AM 0.00 0.0 M M M
11/20/2014 8:00 AM 0.00 0.0 M M M
11/21/2014 8:00 AM 0.00 0.0 M M M
11/22/2014 8:00 AM 0.00 0.0 M M M
11/23/2014 8:00 AM 0.00 0.0 M M M
11/24/2014 8:00 AM 0.40 M M M M light to moderate rain overnight. Rather warm at time of reading - 60 - expected to be around 70 today.
11/25/2014 8:00 AM 0.00 0.0 M M M
11/26/2014 8:15 AM 0.53 M M M M All rain, so far - may mix in some flakes later today.
11/27/2014 7:30 AM 0.75 1.0 M 1.0 M .36" fell as rain, before changing to snow at 11 a.m. Snow and a little sleet continued for several hours, mostly big fat flakes. Now, a little slushy snow especially in shady spots on the grass. Happy Thanksgiving
11/28/2014 8:00 AM T 0.0 M T M Felt a little fine sleet or cold rain while out walking off the dinner. A little snow left in the shade.
11/29/2014 8:00 AM 0.00 0.0 M M M
11/30/2014 8:00 AM 0.00 0.0 M M M
12/1/2014 8:00 AM 0.00 0.0 M M M
12/2/2014 8:30 AM 0.38 M M M M showers, starting around sunset. Scared off most of the people and singers for our town's annual evening holiday walk - disappointing.
12/3/2014 8:00 AM 0.41 M M M M showers through most of the period. cold but above freezing, thank goodness
12/4/2014 8:00 AM T M M M M
12/5/2014 8:00 AM 0.01 M M M M light rain overnight
12/6/2014 8:00 AM 0.04 M M M M
12/7/2014 9:00 AM 0.72 M M M M
12/8/2014 7:45 AM 0.00 0.0 M M M
12/9/2014 8:15 AM 0.32 M M M M rain began around 11 PM, continues. About 1/10" of ice on ends of twigs, sheathing as a thin skin further up; and little frozen icicles on trees and our deck railing where the drips have frozen. Some ice on outer tube too.
12/10/2014 8:00 AM 0.19 M M M M
12/11/2014 8:00 AM 0.00 0.0 M M M
12/12/2014 8:00 AM 0.00 0.0 M M M A few miles away from my station, saw some snowflakes mid-day; the little flurry may not have reached my tube
12/13/2014 8:00 AM 0.00 0.0 M M M
12/14/2014 8:00 AM 0.00 0.0 M M M
12/15/2014 8:00 AM 0.00 0.0 M M M
12/16/2014 8:00 AM 0.00 0.0 M M M
12/17/2014 8:00 AM 0.43 M M M M dark clouds and pouring rain about 11 a.m. yesterday; tapered off through the daylight hours
12/18/2014 8:00 AM 0.00 0.0 M M M
12/19/2014 8:00 AM 0.00 0.0 M M M
12/20/2014 7:45 AM 0.00 0.0 M M M
12/21/2014 8:00 AM 0.00 0.0 M M M
12/22/2014 8:00 AM 0.00 0.0 M M M
12/23/2014 8:00 AM 0.42 M M M M light rain began mid-morning yesterday and continued all day. Sort of misty at time of reading. Thankfully no sleet.
12/24/2014 8:00 AM 0.50 M M M M yesterday was mostly drizzly/foggy; steady rain started sometime overnight and continues today
12/25/2014 8:00 AM 0.50 M M M M more rain, light rain, drizzle past 10:30 pm at least. Now partly cloudy. Merry Christmas!
12/26/2014 8:00 AM 0.00 0.0 M M M
12/27/2014 8:00 AM 0.00 0.0 M M M
12/28/2014 8:00 AM 0.00 0.0 M M M
12/29/2014 8:00 AM 0.10 M M M M very light rain yesterday afternoon
12/30/2014 8:00 AM T M M M M
12/31/2014 8:00 AM 0.00 0.0 M M M
1/1/2015 8:00 AM 0.00 0.0 M M M
1/2/2015 8:00 AM 0.00 0.0 M M M
1/3/2015 9:00 AM 0.12 M M M M
1/4/2015 8:00 AM 0.58 M M M M
1/5/2015 8:00 AM 0.06 M M M M unseasonably warm yesterday, mid 60s. Strong winds at night as a cold front moved through, temps will be 30 degrees lower today!
1/6/2015 8:00 AM 0.20 2.5 0.20 2.5 M fine snow started pre-dawn sometime...continues steadily at TOR
1/7/2015 8:00 AM 0.08 1.0 0.80 3.5 M End of yesterday's surprise snowstorm - was supposed to be just 1/2". Surprise! School system sure was. Very light and dry flakes.
1/8/2015 8:00 AM T T M 3.5 M a few flakes from quickly passing flurries
1/9/2015 8:00 AM 0.00 0.0 M 2.5 M
1/10/2015 8:00 AM 0.00 0.0 M 2.0 M
1/11/2015 8:00 AM 0.00 0.0 M 1.5 M Sunny but continued cold - below freezing all day.
1/12/2015 9:00 AM 0.31 0.0 M 1.0 M just above freezing. Brick walk a little slick but otherwise no sign of ice, at 9 a.m.
1/13/2015 8:00 AM 0.36 0.0 M T M light rain through much of the day, thankfully above freezing. Little patches of snow left in shady areas.
1/14/2015 8:00 AM 0.01 T M T M
1/15/2015 8:00 AM 0.00 0.0 M T M
1/16/2015 8:00 AM 0.00 0.0 M T M
1/17/2015 8:00 AM 0.00 0.0 M M M
1/18/2015 8:30 AM 0.05 M M M M light rain began in early morning
1/19/2015 8:00 AM 0.03 M M M M
1/20/2015 7:45 AM 0.00 0.0 M M M
1/21/2015 7:30 AM T M M M M a couple of drops of rain yesterday afternoon.
1/22/2015 8:00 AM 0.14 1.0 0.14 T M lovely fluffy snow yesterday afternoon, mostly gone now
1/23/2015 8:00 AM 0.00 0.0 M M M
1/28/2015 8:00 AM T T M 1.0 M
1/29/2015 7:30 AM 0.00 0.0 M M M
1/30/2015 8:00 AM 0.04 M M 1.0 M
1/31/2015 8:00 AM T T M 0.5 M A few flurries yesterday morning. Ground is bare in the sunny spots.
2/1/2015 8:00 AM 0.00 0.0 M T M
2/2/2015 8:00 AM 0.12 M M T M
2/3/2015 8:00 AM 0.09 M M T M
2/4/2015 7:30 AM 0.00 0.0 M T M
2/5/2015 8:00 AM 0.00 0.0 M M M
2/6/2015 8:00 AM 0.00 0.0 M M M
2/7/2015 8:00 AM 0.00 0.0 M M M
2/8/2015 8:00 AM 0.00 0.0 M M M
2/9/2015 8:00 AM 0.00 0.0 M M M
2/10/2015 8:00 AM 0.15 M M M M night-time cold rain, mostly frozen in the tube by morning
2/11/2015 8:00 AM 0.00 0.0 M M M
2/12/2015 8:00 AM 0.00 0.0 M M M
2/13/2015 8:00 AM T T M 0.0 M some lovely snowflakes mid-morning yesterday, didn't really stick
2/14/2015 7:30 AM 0.00 0.0 M M M
2/15/2015 8:00 AM 0.03 0.5 M 0.5 M Storm hit with a bang, about 7PM. Whiteout - couldn't see more than 30 feet up the street. Tapered off in about an hour, but winds continue to be incredibly strong; lost power twice (so far) but for no longer than 30 minutes or so, thank you Dominion Power.
2/16/2015 8:00 AM 0.00 0.0 M T M Very cold, windy through much of the day (wind chill alerts). Preparing for tomorrow's big snow!
2/17/2015 8:00 AM 0.45 4.6 0.45 4.5 0.45 Very fine, dry powder. Practically weightless in the shovel! Started after 3 PM, ended sometime in the night.
2/18/2015 8:00 AM 0.00 0.0 M 3.5 M
2/19/2015 8:00 AM T T M 3.5 M
2/20/2015 8:00 AM T T M 3.5 M Thermometer shows 2 degrees! BRRRRRR
2/21/2015 8:00 AM 0.00 0.0 M 3.5 M
2/22/2015 8:00 AM 0.98 7.0 M 7.0 M snow began sometime before noon - I was at a matinee, and came out to see heavy snow and already an inch on the ground (earlier than predicted). No fun at all driving home! NEW SNOWFALL was measured about 6:30 PM when it started to change to sleet/freezing rain, total on ground then was about 9.5 inches. Snow on the ground at time of reading is 7" - some melting/compacting during the night.
2/23/2015 8:00 AM 0.00 0.0 M 4.5 M warmish (40's) and sunny weather yesterday melted much of Saturday's snow; roads are amazingly bare - if they'd been plowed, that is
2/24/2015 8:00 AM 0.00 0.0 M 4.0 M
2/25/2015 8:00 AM 0.00 0.0 M 4.0 M
2/26/2015 8:00 AM 0.09 1.4 M 4.5 M light snow began sometime after midnight, continues now. Above freezing yesterday with more melting.
2/27/2015 8:00 AM 0.03 0.2 M 5.0 M
2/28/2015 8:00 AM 0.00 0.0 M 5.0 M
3/1/2015 7:30 AM 0.00 0.0 M 4.5 M
3/2/2015 8:00 AM 0.47 M M 5.0 M Twigs, and snow, are covered with .2" of ice. Snow yesterday morning became freezing rain for much of the rest of the day. Sunny now, and trees shedding the ice, just above freezing. Driveway is a skating rink.
3/3/2015 8:00 AM 0.00 0.0 M 3.5 M
3/4/2015 8:00 AM 0.06 M M 3.5 M a mix of rain, sleet (almost like hail), freezing rain
3/5/2015 8:30 AM 0.51 0.4 M 4.0 M sleet changed to snow just before reading. Goodbye, paved street.
3/6/2015 8:00 AM 0.71 6.5 M 7.0 M snow ended around 6 PM. New snow measured 6.5" at that point, may have packed down overnight.
3/7/2015 8:00 AM 0.00 0.0 M 6.5 M
3/8/2015 8:00 AM 0.00 0.0 M 6.0 M
3/9/2015 8:00 AM 0.00 0.0 M 3.5 M Warm sunny day melted a lot of snow. Some big bare patches in neighborhood yards. Finally washed the road salt off our cars - yuck.
3/10/2015 8:00 AM 0.00 0.0 M 2.0 M mild sunny day, snow melting faster; a few bare patches in yard now
3/11/2015 8:00 AM 0.50 M M 0.5 M Light to moderate rain. Light fog at time of reading. Snow continues to melt - about half our yard is bare now. Wonder how much salt from the winter-season roads is damaging the ecosystem.
3/12/2015 8:00 AM 0.01 0.0 M T M
3/13/2015 8:00 AM 0.00 0.0 M T M
3/14/2015 8:00 AM 0.35 M M T M rain began after sunset. A few heaps of snow remain where they were plowed/shoveled.
3/15/2015 8:00 AM 0.26 0.0 M T M
3/16/2015 8:00 AM 0.00 0.0 M T M
3/17/2015 8:00 AM 0.00 0.0 M 0.0 M Declaring snow gone from my yard. However, saw some 4-ft plowed monadnocks in a commercial parking lot yesterday, those will be around for a while yet.
3/18/2015 8:00 AM 0.00 0.0 M M M
3/19/2015 8:00 AM 0.00 0.0 M M M
3/20/2015 8:00 AM 0.49 T M T M Rain switched to snow about 8 a.m. Big fat flakes continue to fall. Melting on road - just above freezing. Winter's last (?) laugh?
3/21/2015 8:00 AM 0.18 0.1 M 0.0 M One last (?!) flurry yesterday morning, before changing back to cold rain.
3/22/2015 8:00 AM 0.00 0.0 M 0.0 M
3/23/2015 8:00 AM 0.00 0.0 M M M
3/24/2015 8:00 AM 0.00 0.0 M M M
3/25/2015 8:00 AM 0.00 0.0 M M M
3/26/2015 8:00 AM 0.01 M M M M
3/27/2015 8:30 AM 1.03 M M M M a bit of light rain in the morning; a front went through around sunset with some heavier rain and a few thunder rumbles; still light rain at time of reading
3/28/2015 8:00 AM 0.02 M M M M
3/29/2015 8:00 AM 0.00 0.0 M M M
3/30/2015 8:00 AM 0.01 M M M M
3/31/2015 8:00 AM 0.00 0.0 M M M
4/1/2015 8:00 AM 0.02 M M M M
4/2/2015 8:00 AM 0.00 0.0 M M M
4/3/2015 9:00 AM 0.11 M M M M
4/4/2015 8:00 AM 0.17 M M M M
4/5/2015 8:00 AM 0.00 0.0 M M M
4/6/2015 8:00 AM 0.00 0.0 M M M
4/7/2015 8:00 AM 0.05 M M M M
4/8/2015 8:30 AM 0.14 M M M M
4/9/2015 8:00 AM 0.09 M M M M
4/10/2015 8:00 AM 0.02 M M M M list mist at TOR
4/11/2015 8:00 AM 0.01 M M M M
4/12/2015 8:00 AM 0.00 0.0 M M M
4/13/2015 7:30 AM 0.00 0.0 M M M
4/14/2015 8:00 AM 0.38 M M M M steady rain at time of reading
4/15/2015 8:00 AM 0.40 M M M M
4/16/2015 7:30 AM 0.00 0.0 M M M
4/17/2015 8:00 AM 0.10 M M M M
4/18/2015 8:00 AM T M M M M
4/19/2015 8:00 AM 0.00 0.0 M M M
4/20/2015 8:00 AM 1.28 M M M M rain began about 6 PM, continued overnight
4/21/2015 8:00 AM 0.09 M M M M Pop-up thunderstorms in the late afternoon, last one woke me at 1 AM with deep rumbly echoing thunder. Mostly went to east or west of us, not much rain.
4/22/2015 7:20 AM 0.00 0.0 M M M
4/23/2015 8:00 AM 0.01 M M M M
4/24/2015 7:30 AM 0.00 0.0 M M M
4/25/2015 8:00 AM 0.00 0.0 M M M
4/26/2015 8:00 AM 0.32 M M M M
4/27/2015 7:30 AM 0.00 0.0 M M M
4/28/2015 7:30 AM T M M M M
4/29/2015 8:00 AM 0.00 0.0 M M M
4/30/2015 8:00 AM 0.00 0.0 M M M
5/1/2015 7:10 AM 0.79 M M M M
5/4/2015 7:00 AM 0.00 0.0 M M M
5/9/2015 7:30 AM T 0.0 M M M very fine mist at time of reading
5/10/2015 8:00 AM T M M M M
5/11/2015 8:00 AM T M M M M
5/12/2015 7:20 AM 0.00 0.0 M M M
5/13/2015 7:30 AM 0.00 0.0 M M M
5/14/2015 7:45 AM 0.00 0.0 M M M
5/15/2015 7:45 AM 0.00 0.0 M M M
5/16/2015 8:00 AM 0.00 0.0 M M M
5/17/2015 8:00 AM 0.69 M M M M mass of big dark thunderclouds around 5 PM, blew through during the evening with driving rain but not much thunder
5/18/2015 8:00 AM 0.01 M M M M
5/19/2015 8:00 AM 1.08 M M M M Heavy blowing rain, from a thunderstorm that intensified overhead, after sunset
5/20/2015 7:20 AM 0.00 0.0 M M M
5/21/2015 7:30 AM 0.00 0.0 M M M
5/22/2015 8:00 AM 0.31 M M M M light rain through much of the day
5/23/2015 8:00 AM 0.00 0.0 M M M
5/24/2015 8:00 AM 0.00 0.0 M M M A gorgeous day in all respects
5/25/2015 8:00 AM 0.00 0.0 M M M
5/26/2015 8:00 AM 0.00 0.0 M M M
5/27/2015 7:20 AM 0.00 0.0 M M M
5/28/2015 8:00 AM 0.01 M M M M chains of small thunderstorms passed on either side of us
5/29/2015 8:00 AM 0.00 0.0 M M M
5/30/2015 8:00 AM 0.00 0.0 M M M
5/31/2015 8:00 AM 0.00 0.0 M M M
6/1/2015 8:00 AM 0.01 M M M M Impressive thunderheads all around in the afternoon, but not overhead. This spatter of rain must have happened late in the night. Also a small june bug, belly up.
6/2/2015 7:30 AM 1.47 M M M M Really impressive thunderclouds built up in the afternoon. A couple rolled over us, with gusty winds and downpours.
6/3/2015 8:00 AM 0.11 M M M M light rain/drizzle pretty much all thru the period; continues now
6/4/2015 8:00 AM 0.20 M M M M steady accumulation of drizzle
6/5/2015 8:00 AM 0.40 M M M M lots of drizzle, plus a shower or two
6/6/2015 8:00 AM 0.01 M M M M
6/7/2015 8:00 AM 0.00 0.0 M M M
6/8/2015 8:00 AM 0.00 0.0 M M M
6/9/2015 8:00 AM 0.80 M M M M Dodged the worst of the evening's thunderstorms. Scary swirls in the clouds overhead.
6/10/2015 8:00 AM 0.00 0.0 M M M
6/11/2015 8:00 AM 0.00 0.0 M M M
6/12/2015 6:25 AM 0.00 0.0 M M M
6/17/2015 8:00 AM 0.00 0.0 M M M
6/18/2015 8:00 AM 0.33 M M M M
6/19/2015 8:00 AM 1.20 M M M M Two thunderstorms with heavy rain and gusty winds, in quick succession around 5 PM. The first one dumped .70 inches in under 30 minutes. I think a brief shower sometime after sunset added a little.
6/20/2015 8:00 AM 0.03 M M M M
6/21/2015 8:00 AM 1.98 M M M M Hurricane remnants - wow! First cloud emptied about 6:30 PM. Scary "arm" remnant passed over around sunset - heard the thunder coming for quite a while. Nearly continuous lightning, mostly stayed in the clouds. A few more downpours later in the night. I wish there were another category for significant flooding to do this adequate justice.
6/22/2015 8:00 AM 0.00 0.0 M M M
6/23/2015 8:00 AM 0.00 0.0 M M M
6/24/2015 8:00 AM 0.56 M M M M Very strong line of thunderstorms swept over, around 6:30. Scary dark band coming from the northern horizon. Not much lightning but gusty winds. Some large branches downed.
6/25/2015 8:00 AM 0.00 0.0 M M M
6/26/2015 8:00 AM 0.36 M M M M
6/27/2015 9:00 AM 0.34 M M M M Slept in an hour... gentle rain began early morning.
6/28/2015 8:00 AM 1.78 M M M M rain and heavy rain for most of the daytime. Seemed like the aftermath of a tropical storm, what was that?
6/29/2015 8:00 AM 0.00 0.0 M M M perfectly gorgeous day, clouds of fireflies at night
6/30/2015 8:00 AM 0.00 0.0 M M M
7/1/2015 8:00 AM 0.33 M M M M mostly from a 1 AM intense but brief thunderstorm - lots of bright lightning
7/2/2015 8:00 AM 0.04 M M M M very light rain at OBS, more about to arrive
7/3/2015 8:00 AM 0.20 M M M M
7/4/2015 8:00 AM 0.05 M M M M Light rain at time of obs. Happy Independence Day! Go Nats!
7/5/2015 8:00 AM 0.36 M M M M plus a wineberry dropped in the funnel by a bird
7/6/2015 8:00 AM 0.03 M M M M
7/7/2015 8:00 AM 0.14 M M M M
7/8/2015 8:00 AM T M M M M A few drops in the tube, and raindrop splots on the grill cover
7/9/2015 8:00 AM 2.75 M M M M A few torrential afternoon downpours. One clap of extremely loud thunder. No hail. Some roads closed due to flooding.
7/10/2015 8:00 AM 0.03 M M M M
7/11/2015 8:30 AM 0.07 M M M M
7/12/2015 8:00 AM 0.00 0.0 M M M
7/13/2015 8:15 AM 0.08 M M M M
7/14/2015 8:00 AM 0.05 M M M M
7/15/2015 8:00 AM 0.01 M M M M
7/16/2015 8:00 AM T M M M M Just a couple of drops here. Meanwhile my son got soaked a few miles away in an afternoon rain shower.
7/17/2015 8:00 AM 0.00 0.0 M M M
7/18/2015 8:00 AM 0.00 0.0 M M M
7/19/2015 8:00 AM 0.05 M M M M morning rain with a few grumbles of thunder
7/20/2015 8:00 AM 0.00 0.0 M M M
7/21/2015 8:00 AM 0.00 0.0 M M M
7/22/2015 8:00 AM 0.00 0.0 M M M
7/23/2015 8:00 AM 0.00 0.0 M M M
7/24/2015 8:00 AM 0.00 0.0 M M M
7/25/2015 8:00 AM 0.00 0.0 M M M
7/26/2015 8:00 AM 0.00 0.0 M M M
7/27/2015 8:00 AM 0.09 M M M M
7/28/2015 8:00 AM 0.48 M M M M Afternoon thunderstorm intensified over us. Lots of lightning and thunder, a downpour towards the end.
7/29/2015 8:00 AM 0.01 M M M M
7/30/2015 8:00 AM 0.43 M M M M
7/31/2015 8:00 AM 0.43 M M M M Another day, another .43 from an afternoon thunderstorm.
8/1/2015 8:00 AM 0.00 0.0 M M M
8/2/2015 8:00 AM 0.00 0.0 M M M
8/3/2015 8:00 AM 0.00 0.0 M M M
8/4/2015 8:00 AM 0.00 0.0 M M M
8/5/2015 8:00 AM T M M M M Just a few drops, but heard thunder from big clouds not far off in the afternoon
8/6/2015 8:00 AM 0.00 0.0 M M M
8/7/2015 8:00 AM 0.02 M M M M
8/8/2015 8:00 AM 0.00 0.0 M M M
8/9/2015 8:00 AM 0.00 0.0 M M M
8/10/2015 8:00 AM 0.20 M M M M
8/11/2015 8:00 AM 0.06 M M M M
8/12/2015 8:00 AM 0.01 M M M M
8/13/2015 7:45 AM 0.00 0.0 M M M
8/14/2015 8:00 AM 0.00 0.0 M M M
8/15/2015 8:00 AM 0.00 0.0 M M M
8/16/2015 8:00 AM 0.00 0.0 M M M
8/17/2015 8:00 AM 0.00 0.0 M M M
8/18/2015 8:00 AM 0.00 0.0 M M M
8/19/2015 8:00 AM T M M M M
8/20/2015 8:00 AM 0.09 M M M M
8/21/2015 8:00 AM 0.04 M M M M Grazed by thunderstorms
8/22/2015 8:00 AM 0.00 0.0 M M M
8/23/2015 8:00 AM 0.00 0.0 M M M
8/24/2015 8:00 AM 0.00 0.0 M M M
8/25/2015 5:23 AM 0.14 M M M M Late afternoon (yesterday) showers, on the edges of thunderstorms. Early report as I leave for an event; no rain expected today to add to it.
8/26/2015 6:55 AM 0.00 0.0 M M M
8/27/2015 8:00 AM 0.00 0.0 M M M
8/28/2015 8:00 AM 0.00 0.0 M M M
8/29/2015 8:00 AM 0.00 0.0 M M M
8/30/2015 8:00 AM 0.00 0.0 M M M
8/31/2015 8:00 AM T 0.0 M M M
9/1/2015 8:00 AM T M M M M
9/2/2015 8:00 AM 0.00 0.0 M M M
9/3/2015 8:00 AM 0.00 0.0 M M M
9/4/2015 8:00 AM 0.00 0.0 M M M
9/5/2015 8:00 AM 0.00 0.0 M M M Thunderstorms passed us by - again. It is getting rather dry! Grass in sunny areas is brown and plants getting droopy.
9/6/2015 8:00 AM 0.00 0.0 M M M
9/7/2015 8:00 AM 0.00 0.0 M M M
9/8/2015 8:00 AM 0.00 0.0 M M M
9/9/2015 8:00 AM 0.00 0.0 M M M
9/10/2015 8:00 AM 0.11 M M M M Finally! A couple brief afternoon & evening sprinklings, the rest sometime after midnight. Lawn was looking like brown shredded wheat due to lack of precip. Trees and shrubs seem to hold up though - good native stock.
9/11/2015 8:00 AM 0.03 M M M M
9/12/2015 8:30 AM 0.04 M M M M Good soaking, gentle rain, began earlier this morning
9/13/2015 8:00 AM 0.07 M M M M Disappointed those big black clouds going over all day didn't produce more.
9/14/2015 8:00 AM 0.00 0.0 M M M
9/15/2015 8:00 AM 0.00 0.0 M M M
9/16/2015 8:00 AM 0.00 0.0 M M M
9/17/2015 8:00 AM 0.00 0.0 M M M
9/18/2015 8:00 AM 0.00 0.0 M M M
9/19/2015 8:00 AM 0.00 0.0 M M M
9/20/2015 8:00 AM 0.00 0.0 M M M Ground cover plants are wilting from lack of rain.
9/21/2015 8:00 AM 0.00 0.0 M M M
9/22/2015 8:00 AM 0.23 M M M M Gentle light rain, mid-afternoon into the night. Wish it were more. Yard plants perked up a bit. Nationals ball game postponed because of it!
9/23/2015 8:00 AM 0.00 0.0 M M M
9/24/2015 8:00 AM 0.00 0.0 M M M
9/25/2015 7:20 AM 0.00 0.0 M M M
9/30/2015 8:00 AM 2.61 M M M M Yay! Really needed this rain. Showers started late afternoon, then downpours through the evening



Start Date End Date & Time Duration in Days Precipitation Snow Depth Snow Depth SWE Notes
9/27/2014 10/05/2014 12:00 AM 9 0.23 M M apparently a few days of light rain during that week
1/24/2015 1/27/2015 8:00 AM 4 1.36 2.0 M
5/5/2015 5/08/2015 4:00 PM 4 0.62 M M
6/13/2015 6/16/2015 12:00 PM 4 0.09 M M
9/26/2015 9/29/2015 10:00 AM 4 0.05 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
6/18/2015 5:10 PM Hail fell at the end of a thunderstorm (intense rainfall, some wind). Hail was more like chips than spherical. Seemed to fall several feet apart - heard it more than saw it. Start time is estimate. NA 1/4" Pea Size NA Soft|White Ice 1 1min no damage Continuous True After rain