Station Overview Station Location
Station Number MD-AA-63 Latitude 39.1234
Station Name Severn 1.0 SSE Longitude -76.6818
County Anne Arundel Elevation (ft)



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 3.63 6.19 19 6.19 19 0.00 0 0 9 2 0.0 0 0
Nov 19 3.43 2.12 6 2.12 6 0.00 0 0 4 1 0.0 0 0
Dec 19 3.43 3.70 15 3.70 15 0.00 0 0 12 0 0.8 2 1
Jan 20 3.18 2.67 15 2.67 15 0.00 0 0 6 1 1.8 1 2
Feb 20 2.93 2.27 13 2.27 13 0.00 0 0 8 0 0.0 0 0
March 20 3.94 1.67 14 1.67 14 0.00 0 0 9 1 0.1 1 0
April 20 3.40 2.36 17 2.36 17 0.00 0 0 11 0 0.0 0 0
May 20 4.27 1.66 13 1.66 13 0.00 0 0 6 0 0.0 0 0
June 20 3.58 5.73 18 4.49 16 1.24 2 1 6 2 0.0 0 0
July 20 4.07 4.44 20 4.44 14 0.00 6 0 10 1 0.0 0 0
Aug 20 3.39 12.67 24 9.83 16 2.84 8 2 12 2 0.0 0 0
Sept 20 4.02 6.78 16 3.36 9 3.42 7 1 7 0 0.0 0 0
Water Year Totals: 43.27" 52.26" 190 days 44.76" 167 7.50" 23 days 4 100 days 10 days 2.7" 4 days 3 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 T
10/2/2019 0.00
10/3/2019 0.00
10/4/2019 T
10/5/2019 0.00
10/6/2019
10/7/2019
10/8/2019 0.37
10/9/2019 0.13
10/10/2019
10/11/2019
10/12/2019
10/13/2019
10/14/2019
10/15/2019
10/16/2019
10/17/2019 1.34
10/18/2019 0.00
10/19/2019 0.00
10/20/2019 0.15
10/21/2019 1.41
10/22/2019 0.03
10/23/2019 0.75
10/24/2019
10/25/2019
10/26/2019 0.00
10/27/2019 0.00
10/28/2019 1.38
10/29/2019
10/30/2019 0.00
10/31/2019 0.63
11/1/2019 0.95
11/2/2019 0.00
11/3/2019
11/4/2019
11/5/2019
11/6/2019
11/7/2019
11/8/2019 0.12
11/9/2019
11/10/2019
11/11/2019
11/12/2019
11/13/2019
11/14/2019
11/15/2019
11/16/2019
11/17/2019
11/18/2019 T
11/19/2019 0.20
11/20/2019
11/21/2019
11/22/2019
11/23/2019
11/24/2019 0.85
11/25/2019
11/26/2019
11/27/2019
11/28/2019
11/29/2019
11/30/2019
12/1/2019
12/2/2019 0.08
12/3/2019 0.57
12/4/2019 0.01
12/5/2019 0.00
12/6/2019
12/7/2019
12/8/2019
12/9/2019 0.03
12/10/2019 0.85
12/11/2019 0.22
12/12/2019
12/13/2019
12/14/2019 0.45
12/15/2019
12/16/2019 0.11
12/17/2019 0.45
12/18/2019 0.02
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 0.00
12/29/2019 0.00
12/30/2019 0.78
12/31/2019 0.13
Day of YearDaily PrcpMultiday Prcp
1/1/2020 0.00
1/2/2020 0.00
1/3/2020 0.18
1/4/2020 0.13
1/5/2020 0.00
1/6/2020
1/7/2020
1/8/2020 0.51
1/9/2020 T
1/10/2020
1/11/2020
1/12/2020 0.32
1/13/2020 0.00
1/14/2020 0.00
1/15/2020 0.08
1/16/2020
1/17/2020
1/18/2020 0.00
1/19/2020
1/20/2020
1/21/2020
1/22/2020 0.00
1/23/2020
1/24/2020
1/25/2020
1/26/2020 1.45
1/27/2020
1/28/2020
1/29/2020
1/30/2020
1/31/2020 0.00
2/1/2020
2/2/2020
2/3/2020
2/4/2020 0.01
2/5/2020 0.07
2/6/2020 0.15
2/7/2020 0.89
2/8/2020
2/9/2020
2/10/2020 0.00
2/11/2020 0.74
2/12/2020
2/13/2020 0.24
2/14/2020 0.15
2/15/2020 0.00
2/16/2020 0.00
2/17/2020 0.00
2/18/2020 0.00
2/19/2020
2/20/2020
2/21/2020
2/22/2020
2/23/2020
2/24/2020
2/25/2020 0.02
2/26/2020
2/27/2020
2/28/2020
2/29/2020
3/1/2020
3/2/2020
3/3/2020
3/4/2020
3/5/2020
3/6/2020
3/7/2020 0.19
3/8/2020 0.00
3/9/2020 0.00
3/10/2020 0.00
3/11/2020
3/12/2020
3/13/2020
3/14/2020 0.13
3/15/2020 0.29
3/16/2020
3/17/2020
3/18/2020
3/19/2020
3/20/2020 0.13
3/21/2020 0.05
3/22/2020 0.00
3/23/2020 0.15
3/24/2020
3/25/2020 0.02
3/26/2020 0.33
3/27/2020 T
3/28/2020 0.38
3/29/2020
3/30/2020
3/31/2020
Day of YearDaily PrcpMultiday Prcp
4/1/2020 0.08
4/2/2020 0.00
4/3/2020 0.00
4/4/2020 0.05
4/5/2020 0.00
4/6/2020 0.00
4/7/2020 0.02
4/8/2020
4/9/2020 0.08
4/10/2020
4/11/2020
4/12/2020
4/13/2020
4/14/2020 0.29
4/15/2020
4/16/2020
4/17/2020
4/18/2020 0.06
4/19/2020 0.00
4/20/2020 0.00
4/21/2020
4/22/2020
4/23/2020
4/24/2020 1.19
4/25/2020 0.03
4/26/2020 0.32
4/27/2020 0.23
4/28/2020
4/29/2020
4/30/2020 0.01
5/1/2020
5/2/2020
5/3/2020
5/4/2020 0.50
5/5/2020 0.13
5/6/2020 0.00
5/7/2020 0.52
5/8/2020
5/9/2020 0.29
5/10/2020
5/11/2020
5/12/2020
5/13/2020
5/14/2020
5/15/2020
5/16/2020
5/17/2020 0.00
5/18/2020 0.00
5/19/2020 0.00
5/20/2020 0.00
5/21/2020 0.00
5/22/2020 0.17
5/23/2020
5/24/2020
5/25/2020
5/26/2020
5/27/2020 0.00
5/28/2020
5/29/2020 0.05
5/30/2020
5/31/2020
6/1/2020
6/2/2020 0.00
6/3/2020
6/4/2020 0.00
6/5/2020 2.50
6/6/2020 0.19
6/7/2020 0.00
6/8/2020 0.00
6/9/2020 0.00
6/10/2020 0.00
6/11/2020 0.25
6/12/2020 0.82
6/13/2020 0.00
6/14/2020 0.00
6/15/2020
6/16/2020
6/17/2020
6/18/2020
6/19/2020
6/20/2020 **
6/21/2020 1.24
6/22/2020
6/23/2020 T
6/24/2020 0.21
6/25/2020 T
6/26/2020 0.52
6/27/2020
6/28/2020
6/29/2020
6/30/2020
Day of YearDaily PrcpMultiday Prcp
7/1/2020 0.55
7/2/2020
7/3/2020
7/4/2020
7/5/2020
7/6/2020 T
7/7/2020 2.46
7/8/2020 0.00
7/9/2020 0.00
7/10/2020 0.01
7/11/2020 0.03
7/12/2020 0.27
7/13/2020 0.09
7/14/2020
7/15/2020
7/16/2020
7/17/2020
7/18/2020
7/19/2020
7/20/2020 0.00
7/21/2020 0.01
7/22/2020 0.13
7/23/2020 0.52
7/24/2020 0.37
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 0.86
8/3/2020 0.01
8/4/2020 1.26
8/5/2020 2.36
8/6/2020 0.67
8/7/2020 0.00
8/8/2020 1.51
8/9/2020
8/10/2020
8/11/2020
8/12/2020
8/13/2020 2.34
8/14/2020
8/15/2020 **
8/16/2020 **
8/17/2020 1.98
8/18/2020 0.65
8/19/2020 0.07
8/20/2020 0.65
8/21/2020
8/22/2020
8/23/2020 T
8/24/2020 T
8/25/2020 0.08
8/26/2020 0.06
8/27/2020 0.00
8/28/2020 0.17
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 3.42
9/8/2020
9/9/2020 0.00
9/10/2020 0.05
9/11/2020 0.99
9/12/2020
9/13/2020
9/14/2020
9/15/2020
9/16/2020
9/17/2020
9/18/2020 0.32
9/19/2020
9/20/2020
9/21/2020
9/22/2020
9/23/2020 0.00
9/24/2020
9/25/2020
9/26/2020 0.89
9/27/2020 0.11
9/28/2020
9/29/2020 0.09
9/30/2020 0.91



Observation Date Observation Time Precipitation Snowfall Snowfall SWE Snow Depth Snow SWE Notes
10/1/2019 7:00 AM T M M M M Couple light sprinkles ~10pm
10/2/2019 7:00 AM 0.00 M M M M
10/3/2019 7:00 AM 0.00 M M M M All time October record high temps set across the region today with temps into the mid-upper 90s. High of 96F measured at my house with BWI reaching 98F.
10/4/2019 7:00 AM T M M M M A very gray day witht light drizzle in the afternoon as winds became northeasterly behind the backdoor front.
10/5/2019 7:00 AM 0.00 M M M M Still dry but finally turning into fall weather conditions with highs in the mid 60s and overnight low of 46F measured.
10/8/2019 8:00 AM 0.37 M M M M Mod to heavy rain moved in around 10pm last night. Greater than 0.01” rainfall amount for thr first time since 9/12.
10/9/2019 8:00 AM 0.13 M M M M Area of light-mod rain moved through in the pre-dawn hours.
10/17/2019 7:00 AM 1.34 M M M M First big rain in a very long time with passage of frontal boundary. Expansive area of widespread rains moved through. Very heavy rain from late morning yesterday through early afternoon with light - mod rains continuing until about 4pm. Winds became very gusty behind the front and continued to be strong this morning.
10/18/2019 7:00 AM 0.00 M M M M
10/19/2019 7:00 AM 0.00 M M M M Beautiful fall weather on tap for today.
10/20/2019 7:30 AM 0.15 M M M M Light-mod rain beginning a little before 6am this morning and expected to continue through much of the day.
10/21/2019 7:00 AM 1.41 M M M M Rain starting around 5:30am yesterday that continued on through almost the entire day Sunday. Rain was moderate in intensity for most of the morning into early afternoon hours. It tapered to light rain by late afternoon but continued to drizzle well into the late evening. Another well needed rainfall after barely getting any precipitation for all of September/early October.
10/22/2019 7:00 AM 0.03 M M M M Lightly raining this morning
10/23/2019 6:30 AM 0.75 M M M M Afternoon and early evening rain becoming mod-heavy causing lots of issues on the evening commute
10/26/2019 7:00 AM 0.00 M M M M
10/27/2019 7:00 AM 0.00 M M M M
10/28/2019 7:00 AM 1.38 0.0 M 0.0 M Prolonged rain event stsrting late Sat evening and going through early afternoon Sun. Heaviest rains cam Sun morning to afternoon.
10/30/2019 7:00 AM 0.00 M M M M
10/31/2019 7:00 AM 0.63 M M M M Steady light to mod rain beginning yesterday evening and tapering off just before daybreak.
11/1/2019 7:00 AM 0.95 M M M M A cloudy but warm day with temps in mid 70s allowed for a nice evening for Halloween trick or treating. Rain showers passed through in the morning and again just after noon but dried out for the afternoon and evening. Tstorms could be seen lighting up the sky to the west around 8pm and by 9pm the winds really started to pick up with the first drops of rain. Main part of the front arrived around 9:30pm with wind driven sheets of rain that lasted a good two hours before tapering off although the strong pressure gradient kept wind gusts going all night.
11/2/2019 7:00 AM 0.00 0.0 M 0.0 M First below freezing temps of the season following the strong fropa on Halloween night
11/8/2019 7:00 AM 0.12 M M M M Light rain late Thurs afternoon and into the night.
11/18/2019 7:00 AM T M M M M Very light drizzle late afternoon and again during the evening
11/19/2019 7:00 AM 0.20 0.0 M 0.0 M Mod-locally hvy rains moved northward through central MD around 11pm last night
11/24/2019 8:00 AM 0.85 M M M M Light to moderate rain all evening and through the overnight. Still some light showers moving through the area this morning.
12/2/2019 7:00 AM 0.08 0.0 M 0.0 M Rain beginning early this morning
12/3/2019 7:00 AM 0.57 0.0 M 0.0 M Day of rain for much of the day
12/4/2019 7:00 AM 0.01 T M 0.0 M Rain/freezing rain in early morning hours along with some graupel pellts observed on cars and elevated surfaces
12/5/2019 7:00 AM 0.00 M M M M
12/9/2019 7:00 AM 0.03 M M M M Light rain early this morning. Supposed to continue throughout the day today
12/10/2019 7:00 AM 0.85 0.0 M 0.0 M Mod to locally heavy rain during the day and into the late evening hours/overnight Monday with lighter precip still falling Tues morning.
12/11/2019 7:00 AM 0.22 0.3 M T M First snow of the 2019-2020 season! Rain/drizzle changed over to snow during the overnight hours with frontal passage as temps dropped from mid 50s Tues to freezing by the pre-dawn hours on Wed. Roads/sidewalks still too warm for accumulation. Just enough to cover the ground/cars/tree branches/deck.
12/14/2019 7:00 AM 0.45 M M M M
12/16/2019 6:30 AM 0.11 0.5 M 0.5 M 2nd snowfall of the season. Light anow began overnight around 2am and continued to fall through 6am when rain began to mix in.
12/17/2019 7:00 AM 0.45 0.0 M 0.0 M Snow yesterday morning transitioned to freezing rain for a short period and then all rain as temps warmed into the mid 30s. Rain and drizzle continued for the entire day and overnight but had stopped by morning.
12/18/2019 7:00 AM 0.02 0.0 M 0.0 M Showers during the day
12/28/2019 7:00 AM 0.00 M M M M
12/29/2019 7:00 AM 0.00 M M M M
12/30/2019 6:30 AM 0.78 M M M M Rain starting around 9am yesterday morning. Light - moderate for most of the day with periods of drizzle late in the day.
12/31/2019 7:00 AM 0.13 0.0 M 0.0 M Additional showers/rain/drizzle during the day yesterday. Cloudy and damp for much of the day but high temp reached 61F before fropa.
1/1/2020 7:00 AM 0.00 0.0 M 0.0 M
1/2/2020 7:00 AM 0.00 0.0 M 0.0 M
1/3/2020 7:00 AM 0.18 0.0 M 0.0 M Rain overnight with some showers still moving through this morning associated with front.
1/4/2020 7:00 AM 0.13 0.0 M 0.0 M Additional showers throughout the morning with spotty drizzle continuing through the evening/overnight. Temps very mild.
1/5/2020 7:00 AM 0.00 0.0 M 0.0 M
1/8/2020 7:00 AM 0.51 1.8 M 1.5 M Rain/sleet mix stsrted around 1:30pm thrn wuickly transitioned to wet snow. Mod-heavy snow continued for several hours tapering off by 7pm. Temps were initially in the low 40s but fell to 33F by 4pm and stayed there through the end of the event.
1/9/2020 7:00 AM T T M 0.5 M Brief intense snow shower moved through ~9am yesterday morning. Just enough snow to start acculating on cars/deck and sidewalks but was over within 15 min. About 1/2 the yard is bare after snowmelt in full sun yesterday for most of the day.
1/12/2020 7:00 AM 0.32 0.0 M 0.0 M Locally heavy rain overnight Sat - Sun early morning with frontal passage. Temps very warm reaching 60F by 10am and a high of 71F observed at 3:27pm. Temps remained near 70F into the late evening due to the strong WAA.
1/13/2020 7:00 AM 0.00 0.0 M 0.0 M
1/14/2020 6:30 AM 0.00 M M M M
1/15/2020 7:00 AM 0.08 0.0 M 0.0 M Light rain and drizzle throughout the day yesterday
1/18/2020 6:30 AM 0.00 0.0 M 0.0 M
1/22/2020 6:30 AM 0.00 0.0 M 0.0 M
1/26/2020 7:00 AM 1.45 0.0 M 0.0 M Rain for much of the day Sat. temps in 40s
1/31/2020 7:00 AM 0.00 0.0 M 0.0 M
2/4/2020 6:30 AM 0.01 0.0 M 0.0 M Light rain this morning
2/5/2020 6:30 AM 0.07 0.0 M 0.0 M Light to mod rain yesterday morning. High 68F under cloudy conditions due to WAA
2/6/2020 7:00 AM 0.15 0.0 M 0.0 M Rain yesterday and overnight.
2/7/2020 7:00 AM 0.89 0.0 M 0.0 M Rain yesterday morning and afternoon/evening/overnight. Temps mild this morning in mid 50s with rain showers still moving through this morning.
2/10/2020 6:00 AM 0.00 0.0 M 0.0 M Fairly mild this morning
2/11/2020 6:30 AM 0.74 0.0 M 0.0 M Light-mod rain yesterday morning and evening. Then mod-heavy rains overnight. Still raining this morning. Temp currently 51F.
2/13/2020 8:00 AM 0.24 0.0 M 0.0 M Light -mod rain and drizzle beginning yesterday late afternoon and continuing into this morning.
2/14/2020 7:00 AM 0.15 0.0 M 0.0 M Rain from previous day. Temps dropped from low 60s (but cloudy and rainy) on Thurs to the teens overnight into Fri morning.
2/15/2020 7:00 AM 0.00 M M M M
2/16/2020 7:00 AM 0.00 M M M M
2/17/2020 7:00 AM 0.00 M M M M
2/18/2020 7:00 AM 0.00 0.0 M 0.0 M
2/25/2020 7:00 AM 0.02 M M M M Light rain beginning sometime overnight.
3/7/2020 7:00 AM 0.19 0.1 M 0.0 M Weak convection moves through around 5:15pm with an intense burst of graupel falling for about 3 minutes. Changing to cold rain afterwards and a rumble of thunder. 0.09” total precip for the tstorm. Overnight had somr additional light rain which ampunted to 0.1”
3/8/2020 7:00 AM 0.00 0.0 M 0.0 M
3/9/2020 7:00 AM 0.00 M M M M
3/10/2020 7:00 AM 0.00 0.0 M 0.0 M
3/14/2020 8:00 AM 0.13 0.0 M 0.0 M Light rain in the morning yesterday.
3/15/2020 8:00 AM 0.29 0.0 M 0.0 M Light rain starting yesterday evening and continuing into this morning.
3/20/2020 7:00 AM 0.13 0.0 M 0.0 M Light rain ahead on front. Day started out cloudy but reached low 70s by afternoon. Rain moved back in overnight.
3/21/2020 8:00 AM 0.05 0.0 M 0.0 M Light rain showers in late morning and again sometime overnight. Temps reached low 80s by afternoon.
3/22/2020 7:00 AM 0.00 0.0 M 0.0 M
3/23/2020 7:00 AM 0.15 0.0 M 0.0 M Light rain this morning
3/25/2020 7:00 AM 0.02 0.0 M 0.0 M Light rain beginning to fall this morning.
3/26/2020 7:00 AM 0.33 0.0 M 0.0 M Light - mod rain for modt of the day yesterday
3/27/2020 7:00 AM T M M M M Light rain shower just before 7am
3/28/2020 7:00 AM 0.38 0.0 M 0.0 M Light - mod rain moved in after midnight. Temps yesterday were in mid 60s.
4/1/2020 7:00 AM 0.08 0.0 M 0.0 M Light rain yesterday.
4/2/2020 7:00 AM 0.00 M M M M
4/3/2020 7:00 AM 0.00 M M M M
4/4/2020 8:00 AM 0.05 M M M M Rain sometime during the overnight.
4/5/2020 8:00 AM 0.00 M M M M
4/6/2020 7:00 AM 0.00 M M M M
4/7/2020 7:00 AM 0.02 M M M M Light showers moving through the area this morning. Some sprinkles at time of observation.
4/9/2020 7:00 AM 0.08 M M M M Moderate rain falling this morning from ~6-7am as an area of decaying tstorms move through.
4/14/2020 7:00 AM 0.29 M M M M Additional rain after 7am from showers and an intense line of tstorms. Wind gusts with the line estimated ~60mph. Trash cans blown over.
4/18/2020 9:00 AM 0.06 M M M M Overnight light rain ending this morning
4/19/2020 8:00 AM 0.00 M M M M
4/20/2020 7:00 AM 0.00 M M M M
4/24/2020 9:00 AM 1.19 M M M M Rain from Thurs afternoon through the overnight period. Some drizzle still falling this morning.
4/25/2020 9:00 AM 0.03 M M M M Addtl light rain during the day Fri
4/26/2020 9:00 AM 0.32 M M M M Rain beginning late evening and continuing overnight. Still light drizzle falling this morning.
4/27/2020 7:00 AM 0.23 M M M M Rain for much of the day yesterday
4/30/2020 7:00 AM 0.01 M M M M Light rain shower sometime after midnight
5/4/2020 9:00 AM 0.50 M M M M
5/5/2020 7:00 AM 0.13 M M M M
5/6/2020 7:00 AM 0.00 M M M M
5/7/2020 7:00 AM 0.52 M M M M
5/9/2020 7:00 AM 0.29 M M M M Rain through much of the day yesterday. Twmps dropping to 35F overnight.
5/17/2020 8:00 AM 0.00 M M M M
5/18/2020 7:00 AM 0.00 M M M M
5/19/2020 7:00 AM 0.00 M M M M
5/20/2020 7:00 AM 0.00 M M M M
5/21/2020 7:00 AM 0.00 M M M M
5/22/2020 7:00 AM 0.17 M M M M Rain beginning overnight into the morning. Light drizzle still falling and more rain on the way today.
5/27/2020 7:00 AM 0.00 M M M M
5/29/2020 7:00 AM 0.05 M M M M
6/2/2020 7:00 AM 0.00 M M M M
6/4/2020 7:00 AM 0.00 M M M M
6/5/2020 7:00 AM 2.50 M M M M 3 or 4 rounds of intense tstorms moved through the region during the evening/overnight hours. First storm moved through ~8:30pm and a wel defined shelf cloud was observed with it. Then two more rounds of storm moved through ~10pm-midnight and another overnight.
6/6/2020 8:00 AM 0.19 M M M M Line of slow moving but strong tstorms moved through the region yesterday evening.
6/7/2020 8:00 AM 0.00 M M M M
6/8/2020 7:00 AM 0.00 M M M M
6/9/2020 7:00 AM 0.00 M M M M
6/10/2020 7:00 AM 0.00 M M M M
6/11/2020 7:00 AM 0.25 M M M M Overnight rain/tstorms
6/12/2020 8:00 AM 0.82 M M M M Heavy rain from showers/storms the prior day
6/13/2020 8:00 AM 0.00 M M M M
6/14/2020 8:00 AM 0.00 M M M M
6/23/2020 7:00 AM T M M M M A few drops of rain as strong storms paseed just to our west moving northeastward.
6/24/2020 7:00 AM 0.21 M M M M
6/25/2020 7:00 AM T M M M M Light shower passed through ~10:30pm
6/26/2020 8:00 AM 0.52 M M M M Heavy rain from a very severe storm
7/1/2020 8:00 AM 0.55 M M M M Heavy downpours from low topped tstorm that moved N - S in the evening lasting 10-15 minutes. Later some weaker storms also moved through.
7/6/2020 7:00 AM T M M M M Light showers during the morning
7/7/2020 8:00 AM 2.46 M M M M Multiple rounds of very heavy rains and severe lightning starting early evening. On and off severe tstorms theough midnight.
7/8/2020 7:00 AM 0.00 M M M M
7/9/2020 7:00 AM 0.00 M M M M
7/10/2020 7:00 AM 0.01 M M M M Overnight rain shower
7/11/2020 7:00 AM 0.03 M M M M Overnight rain shower
7/12/2020 8:00 AM 0.27 M M M M Intense downpour and a couple rumbles of thunder as convection moved across the area ~1pm Saturday
7/13/2020 7:00 AM 0.09 M M M M Heavy downpour moved theough yesterday evening ~8pm
7/20/2020 7:00 AM 0.00 M M M M Hot and dry yet again
7/21/2020 7:00 AM 0.01 M M M M
7/22/2020 7:00 AM 0.13 M M M M
7/23/2020 7:00 AM 0.52 M M M M Large line of severe tstorms moved through the region. Severe winds and blowing rain. Moderate rain continued for several hours afterwards.
7/24/2020 7:00 AM 0.37 M M M M Rain from tstorms that moved through yesterday evening
8/3/2020 7:00 AM 0.01 M M M M
8/4/2020 7:00 AM 1.26 M M M M Start of outer rain bands associated with T.S. Isaias
8/5/2020 7:00 AM 2.36 M M M M Heagy rain and winds from Tropical Storm Isaias in the morning. Storm rapidly moved out of the region (~40mph) and skies cleared behind it. Additonal 1.78” related to the storm itself for a storm total of 3.04”. Late in the afternoon and in evening we had multiple rounds of showers/tstorms resulting in another 0.58” for the day.
8/6/2020 7:00 AM 0.67 M M M M Strong severe tstorms moved through in the overnight hours (~5am) bringing torrential downpours and strong winds.
8/7/2020 7:00 AM 0.00 M M M M
8/8/2020 7:00 AM 1.51 M M M M Multiple rounds of tstorms with heavy rain during evening and pre-midnight hours.
8/13/2020 8:30 AM 2.34 M M M M Intense thunder and lightning accompanied by very heavy rains for much of the evening. Tapered off overnight but additional tstorms in the area this morning producing downpours.
8/18/2020 7:00 AM 0.65 M M M M Heavy rain from tstorms that moved through in late afternoon. Nice rainbow seen afterwards.
8/19/2020 7:45 AM 0.07 M M M M Yesterday was finally dry and sunny. But this morning brought showers and an approaching area of tstorms around the time of measurement. Still raining at time of ob.
8/20/2020 7:00 AM 0.65 M M M M Tstorm moved through in the morning houra followed by periods of showers through mid morning.
8/23/2020 7:00 AM T M M M M Few spritzes of rain fell on Sat. Storms observed well to the west of us over northern VA
8/24/2020 7:00 AM T M M M M Few drops of rain as tstorms moved past us to our northeast and south
8/25/2020 7:00 AM 0.08 M M M M Downpours from tstorms moving through the region in early-mid afternoon
8/26/2020 7:00 AM 0.06 M M M M Brief but heavy downpour Tues evening ~7:30
8/27/2020 7:00 AM 0.00 M M M M
8/28/2020 7:00 AM 0.17 M M M M
9/9/2020 7:00 AM 0.00 M M M M
9/10/2020 7:30 AM 0.05 M M M M Afternoon and evening rain showers
9/11/2020 7:00 AM 0.99 M M M M On and off rain throughout the day and evening
9/18/2020 7:00 AM 0.32 M M M M Light to moderate rainfall yesterday afternoon/evening/overnight from the remnants of Hurricane Sally.
9/23/2020 7:00 AM 0.00 M M M M Sunny and dry. Perfect fall weather
9/26/2020 7:00 AM 0.89 M M M M Rain starting late afternoon and through the night.
9/27/2020 7:00 AM 0.11 M M M M Light rain showers on and off all day Saturday
9/29/2020 7:00 AM 0.09 M M M M
9/30/2020 7:00 AM 0.91 M M M M Rain starting in evening and continuing through the night. Becoming cool and breezy by mid evevning.



Start Date End Date & Time Duration in Days Precipitation Snow Depth Snow Depth SWE Notes
6/20/2020 6/21/2020 7:00 AM 2 1.24 M M
7/26/2020 8/02/2020 7:00 AM 8 0.86 M M
8/15/2020 8/17/2020 7:00 AM 3 1.98 M M
8/29/2020 9/07/2020 8:00 AM 10 3.42 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