Station Overview Station Location
Station Number MD-HR-11 Latitude 39.538517
Station Name Bel Air 1.7 W Longitude -76.378792
County Harford Elevation (ft) 433



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 4.10 4.39 11 4.39 11 0.00 0 0 10 1 0.0 0 0
Nov 17 3.85 1.42 11 1.42 11 0.00 0 0 7 2 0.0 0 0
Dec 17 3.84 1.40 19 1.40 19 0.00 0 0 10 4 5.8 4 4
Jan 18 3.39 2.41 19 2.41 19 0.00 0 0 11 2 4.8 5 5
Feb 18 2.96 4.98 18 4.98 18 0.00 0 0 15 1 2.0 1 1
March 18 4.39 3.05 15 3.05 15 0.00 0 0 8 3 6.0 3 3
April 18 3.84 3.94 15 3.94 15 0.00 0 0 12 0 0.0 1 1
May 18 4.56 9.14 20 8.79 18 0.35 2 1 16 0 0.0 0 0
June 18 4.08 4.02 17 4.02 8 0.00 9 0 7 1 0.0 0 0
July 18 4.95 13.19 16 12.57 12 0.62 4 1 12 0 0.0 0 0
Aug 18 3.91 6.15 16 6.15 16 0.00 0 0 13 2 0.0 0 0
Sept 18 4.49 10.04 17 10.04 17 0.00 0 0 15 1 0.0 0 0
Water Year Totals: 48.36" 64.13" 194 days 63.16" 179 0.97" 15 days 2 136 days 17 days 18.5" 14 days 14 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
10/2/2017
10/3/2017
10/4/2017
10/5/2017
10/6/2017
10/7/2017
10/8/2017 0.04
10/9/2017 0.23
10/10/2017 1.08
10/11/2017 T
10/12/2017 0.51
10/13/2017 0.08
10/14/2017 0.05
10/15/2017 0.01
10/16/2017
10/17/2017
10/18/2017
10/19/2017
10/20/2017
10/21/2017
10/22/2017
10/23/2017
10/24/2017 0.04
10/25/2017
10/26/2017
10/27/2017
10/28/2017
10/29/2017 0.20
10/30/2017 2.15
10/31/2017
11/1/2017
11/2/2017
11/3/2017
11/4/2017
11/5/2017 0.28
11/6/2017 0.02
11/7/2017
11/8/2017 0.70
11/9/2017 T
11/10/2017 0.02
11/11/2017 0.00
11/12/2017
11/13/2017 0.17
11/14/2017
11/15/2017
11/16/2017 T
11/17/2017 0.00
11/18/2017
11/19/2017 0.18
11/20/2017
11/21/2017
11/22/2017 0.05
11/23/2017
11/24/2017
11/25/2017
11/26/2017
11/27/2017
11/28/2017
11/29/2017
11/30/2017
12/1/2017 0.04
12/2/2017
12/3/2017 0.03
12/4/2017 0.01
12/5/2017
12/6/2017 0.19
12/7/2017
12/8/2017
12/9/2017 0.00
12/10/2017 0.30
12/11/2017 0.00
12/12/2017 0.00
12/13/2017
12/14/2017 0.06
12/15/2017 0.00
12/16/2017 0.16
12/17/2017 T
12/18/2017 0.00
12/19/2017
12/20/2017
12/21/2017
12/22/2017
12/23/2017 0.14
12/24/2017 0.37
12/25/2017 0.10
12/26/2017
12/27/2017
12/28/2017 T
12/29/2017
12/30/2017 T
12/31/2017 T
Day of YearDaily PrcpMultiday Prcp
1/1/2018 T
1/2/2018 0.00
1/3/2018 0.00
1/4/2018 0.10
1/5/2018 0.01
1/6/2018
1/7/2018 0.00
1/8/2018
1/9/2018 0.07
1/10/2018 0.00
1/11/2018
1/12/2018 0.94
1/13/2018 0.73
1/14/2018
1/15/2018
1/16/2018 T
1/17/2018 0.14
1/18/2018 0.01
1/19/2018 0.00
1/20/2018 0.00
1/21/2018
1/22/2018
1/23/2018 0.16
1/24/2018
1/25/2018
1/26/2018
1/27/2018
1/28/2018 0.06
1/29/2018 0.17
1/30/2018 0.02
1/31/2018
2/1/2018
2/2/2018 0.15
2/3/2018 T
2/4/2018
2/5/2018 1.23
2/6/2018
2/7/2018 0.07
2/8/2018 0.50
2/9/2018
2/10/2018 0.00
2/11/2018 1.00
2/12/2018 0.50
2/13/2018
2/14/2018
2/15/2018 0.02
2/16/2018 0.38
2/17/2018 0.04
2/18/2018 0.32
2/19/2018 0.00
2/20/2018
2/21/2018
2/22/2018 0.07
2/23/2018 0.30
2/24/2018 0.03
2/25/2018 0.19
2/26/2018 0.18
2/27/2018
2/28/2018
3/1/2018
3/2/2018 0.83
3/3/2018 T
3/4/2018
3/5/2018 0.00
3/6/2018
3/7/2018 0.60
3/8/2018
3/9/2018
3/10/2018
3/11/2018
3/12/2018
3/13/2018 0.10
3/14/2018
3/15/2018
3/16/2018
3/17/2018
3/18/2018
3/19/2018
3/20/2018
3/21/2018 0.72
3/22/2018 0.45
3/23/2018
3/24/2018 0.00
3/25/2018 0.00
3/26/2018 T
3/27/2018 0.00
3/28/2018 0.05
3/29/2018 0.14
3/30/2018 T
3/31/2018 0.16
Day of YearDaily PrcpMultiday Prcp
4/1/2018 0.00
4/2/2018 0.25
4/3/2018 0.05
4/4/2018 0.06
4/5/2018 0.03
4/6/2018
4/7/2018 0.00
4/8/2018
4/9/2018
4/10/2018
4/11/2018
4/12/2018
4/13/2018
4/14/2018
4/15/2018
4/16/2018 1.60
4/17/2018 0.06
4/18/2018 0.01
4/19/2018
4/20/2018 0.02
4/21/2018
4/22/2018
4/23/2018
4/24/2018
4/25/2018 1.43
4/26/2018 0.03
4/27/2018 0.33
4/28/2018 0.07
4/29/2018
4/30/2018 0.00
5/1/2018
5/2/2018 0.00
5/3/2018
5/4/2018
5/5/2018 0.02
5/6/2018 0.05
5/7/2018 0.03
5/8/2018
5/9/2018
5/10/2018
5/11/2018 **
5/12/2018 0.35
5/13/2018 0.64
5/14/2018 0.18
5/15/2018 0.06
5/16/2018 2.19
5/17/2018 1.55
5/18/2018 0.55
5/19/2018 1.08
5/20/2018 0.40
5/21/2018
5/22/2018
5/23/2018 0.67
5/24/2018
5/25/2018 0.00
5/26/2018
5/27/2018 0.02
5/28/2018 1.26
5/29/2018 0.05
5/30/2018
5/31/2018 0.04
6/1/2018 0.24
6/2/2018 T
6/3/2018 0.26
6/4/2018 1.27
6/5/2018 M
6/6/2018 0.34
6/7/2018
6/8/2018
6/9/2018
6/10/2018 0.06
6/11/2018 1.82
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 0.03
6/22/2018 **
6/23/2018 **
6/24/2018 **
6/25/2018 **
6/26/2018 **
6/27/2018 **
6/28/2018 **
6/29/2018 **
6/30/2018 **
Day of YearDaily PrcpMultiday Prcp
7/1/2018 **
7/2/2018 **
7/3/2018 **
7/4/2018 0.62
7/5/2018
7/6/2018 0.27
7/7/2018 0.04
7/8/2018
7/9/2018
7/10/2018
7/11/2018
7/12/2018
7/13/2018
7/14/2018
7/15/2018
7/16/2018 0.10
7/17/2018
7/18/2018 0.34
7/19/2018
7/20/2018
7/21/2018
7/22/2018 2.23
7/23/2018 2.19
7/24/2018 1.32
7/25/2018 2.02
7/26/2018 1.33
7/27/2018 0.05
7/28/2018 2.59
7/29/2018
7/30/2018
7/31/2018 0.09
8/1/2018 0.18
8/2/2018 1.10
8/3/2018 0.43
8/4/2018 0.46
8/5/2018 T
8/6/2018 0.00
8/7/2018
8/8/2018 0.04
8/9/2018 0.84
8/10/2018
8/11/2018
8/12/2018 0.02
8/13/2018 0.13
8/14/2018 0.79
8/15/2018
8/16/2018
8/17/2018
8/18/2018 0.08
8/19/2018
8/20/2018 0.15
8/21/2018 T
8/22/2018 1.90
8/23/2018
8/24/2018
8/25/2018
8/26/2018
8/27/2018
8/28/2018
8/29/2018
8/30/2018
8/31/2018 0.03
9/1/2018 1.61
9/2/2018 0.03
9/3/2018 0.00
9/4/2018
9/5/2018
9/6/2018
9/7/2018 0.17
9/8/2018 0.29
9/9/2018 1.90
9/10/2018 1.82
9/11/2018 0.11
9/12/2018 0.06
9/13/2018 0.04
9/14/2018 T
9/15/2018 0.01
9/16/2018
9/17/2018
9/18/2018 2.47
9/19/2018 0.29
9/20/2018
9/21/2018
9/22/2018 0.08
9/23/2018 0.04
9/24/2018 1.12
9/25/2018
9/26/2018
9/27/2018
9/28/2018
9/29/2018
9/30/2018



Observation Date Observation Time Precipitation Snowfall Snowfall SWE Snow Depth Snow SWE Notes
10/8/2017 7:00 AM 0.04 M M M M very light rain
10/9/2017 7:30 AM 0.23 M M M M rain, warm
10/10/2017 7:00 AM 1.08 M M M M sunny, humid
10/11/2017 7:00 AM T M M M M Submitted via CoCoRaHS Observer for Android version 2.1.0 (build 21001)
10/12/2017 7:00 AM 0.51 M M M M Submitted via CoCoRaHS Observer for Android version 2.1.0 (build 21001)
10/13/2017 7:00 AM 0.08 M M M M Submitted via CoCoRaHS Observer for Android version 2.1.0 (build 21001)
10/14/2017 7:00 AM 0.05 M M M M Submitted via CoCoRaHS Observer for Android version 2.1.0 (build 21001)
10/15/2017 7:00 AM 0.01 M M M M Submitted via CoCoRaHS Observer for Android version 2.1.0 (build 21001)
10/24/2017 7:00 AM 0.04 M M M M windy enough to knock over full trash can
10/29/2017 7:00 AM 0.20 M M M M Submitted via CoCoRaHS Observer for Android version 2.1.0 (build 21001)
10/30/2017 7:00 AM 2.15 M M M M windy, 43 deg F
11/5/2017 7:00 AM 0.28 M M M M cool, drizzly
11/6/2017 7:00 AM 0.02 M M M M Submitted via CoCoRaHS Observer for Android version 2.1.0 (build 21001)
11/8/2017 7:00 AM 0.70 M M M M Submitted via CoCoRaHS Observer for Android version 2.1.0 (build 21001)
11/9/2017 7:00 AM T M M M M Submitted via CoCoRaHS Observer for Android version 2.1.0 (build 21001)
11/10/2017 7:00 AM 0.02 M M M M cold wind
11/11/2017 7:00 AM 0.00 M M M M clear, 21 deg F
11/13/2017 7:00 AM 0.17 M M M M Submitted via CoCoRaHS Observer for Android version 2.1.0 (build 21001)
11/16/2017 7:00 AM T M M M M Submitted via CoCoRaHS Observer for Android version 2.1.0 (build 21001)
11/17/2017 7:00 AM 0.00 M M M M
11/19/2017 6:31 AM 0.18 M M M M gusty wind
11/22/2017 7:00 AM 0.05 M M M M
12/1/2017 7:00 AM 0.04 M M M M rain cleared , beautiful sunrise
12/3/2017 7:00 AM 0.03 M M M M light rain, 37 degrees
12/4/2017 7:00 AM 0.01 M M M M
12/6/2017 7:00 AM 0.19 M M M M
12/9/2017 7:00 AM 0.00 M M M M cloudy, moist air, 32 deg F
12/10/2017 7:00 AM 0.30 3.0 0.30 3.0 0.30
12/11/2017 7:00 AM 0.00 0.0 0.00 T T
12/12/2017 7:00 AM 0.00 0.0 0.00 T T
12/14/2017 7:00 AM 0.06 0.5 0.02 0.5 0.02
12/15/2017 7:00 AM 0.00 0.0 0.00 T T
12/16/2017 7:00 AM 0.16 2.0 0.02 2.0 0.02
12/17/2017 7:00 AM T 0.0 0.00 T T
12/18/2017 7:00 AM 0.00 0.0 0.00 T T
12/23/2017 7:00 AM 0.14 M M M M
12/24/2017 7:00 AM 0.37 M M M M temps down more than 10 degrees from yesterday a.m. to 34 deg F. during day yesterday, temps only varied 5 degrees from 43 to 48 F.
12/25/2017 7:00 AM 0.10 M M M M 31 deg F, windy, sunshine. Merry Christmas!
12/28/2017 7:00 AM T T T T T
12/30/2017 7:00 AM T 0.3 0.01 0.3 0.00 light snow, 18 deg F, snow easily brooms off sidewalk
12/31/2017 7:00 AM T T T T T
1/1/2018 7:00 AM T M M M M 6 deg F, no wind, clear skies
1/2/2018 7:00 AM 0.00 M M T T 10 degrees F, clear. bright moon setting.
1/3/2018 7:00 AM 0.00 M M T T
1/4/2018 7:00 AM 0.10 2.0 0.01 2.0 0.01 gusty winds
1/5/2018 7:00 AM 0.01 1.0 0.01 2.0 T
1/7/2018 7:00 AM 0.00 M M T T
1/9/2018 7:00 AM 0.07 M M T T ice. who knew so little frozen water could cause so much havoc
1/10/2018 7:00 AM 0.00 M M T T frost
1/12/2018 7:00 AM 0.94 M M M M
1/13/2018 7:00 AM 0.73 M M M M
1/16/2018 7:00 AM T T T T T sudden slick!
1/17/2018 7:00 AM 0.14 1.0 0.02 1.0 0.02 light snow
1/18/2018 7:00 AM 0.01 0.5 0.01 1.5 0.01 bright, 11 degrees, no wind
1/19/2018 7:00 AM 0.00 M M T T
1/20/2018 7:00 AM 0.00 M M T T
1/23/2018 7:00 AM 0.16 M M M M rain
1/28/2018 7:00 AM 0.06 M M M M light rain
1/29/2018 7:00 AM 0.17 M M M M grey, 37 degrees
1/30/2018 7:00 AM 0.02 0.3 0.02 0.3 0.02 light snow
2/2/2018 7:00 AM 0.15 M M M M rain last night, frozen this a.m.
2/3/2018 7:00 AM T T T T T
2/5/2018 7:00 AM 1.23 M M M M icy
2/7/2018 8:00 AM 0.07 M M M M icy
2/8/2018 7:00 AM 0.50 M M M M wind seems to have dried out sidewalks, streets overnight
2/10/2018 7:00 AM 0.00 0.0 M M M fog moving in from west/ southwest
2/11/2018 7:00 AM 1.00 M M M M rain
2/12/2018 7:00 AM 0.50 M M M M
2/15/2018 7:00 AM 0.02 M M M M
2/16/2018 7:00 AM 0.38 M M M M raining
2/17/2018 7:00 AM 0.04 M M M M sunshine. pressure high
2/18/2018 7:00 AM 0.32 2.0 0.03 2.0 0.03
2/19/2018 7:00 AM 0.00 M M T T
2/22/2018 7:00 AM 0.07 M M M M
2/23/2018 7:00 AM 0.30 M M M M
2/24/2018 7:00 AM 0.03 M M M M
2/25/2018 7:00 AM 0.19 M M M M light rain
2/26/2018 7:00 AM 0.18 M M M M
3/2/2018 7:00 AM 0.83 M M M M light snow swirling, windy
3/3/2018 7:00 AM T T T T T power out 18 hours so far, gusty winds seem slightly less
3/5/2018 7:00 AM 0.00 M M M M all generators are quiet in neighborhood, saws working hard on trees, hammering on soffits, ocassional dance still on trees with wind gusts
3/7/2018 7:00 AM 0.60 3.0 0.06 3.0 0.06 heavy wet snow falling, 2nd round
3/13/2018 7:00 AM 0.10 1.0 0.01 1.5 0.02
3/21/2018 7:00 AM 0.72 2.0 0.05 2.0 0.05 light mixed precipitation, 29 deg F at observation time. kitchen sink description of storm by someone us very apt.
3/22/2018 7:00 AM 0.45 M M M M storm was many layered so very hard to get snow measure
3/24/2018 7:00 AM 0.00 M M T T
3/25/2018 7:00 AM 0.00 M M T T
3/26/2018 7:00 AM T T T T T
3/27/2018 7:00 AM 0.00 M M T T
3/28/2018 7:00 AM 0.05 M M T T
3/29/2018 7:00 AM 0.14 M M M M foggy
3/30/2018 7:00 AM T M M M M 60 degrees F
3/31/2018 7:00 AM 0.16 M M M M
4/1/2018 7:00 AM 0.00 M M M M
4/2/2018 7:00 AM 0.25 M M M M light rain
4/3/2018 7:00 AM 0.05 M M M M
4/4/2018 7:00 AM 0.06 M M M M dense fog
4/5/2018 7:00 AM 0.03 M M M M bright sunshine 32 deg F
4/7/2018 7:00 AM 0.00 M M M M
4/16/2018 7:00 AM 1.60 M M M M rain
4/17/2018 7:00 AM 0.06 M M M M
4/18/2018 7:00 AM 0.01 0.0 0.01 0.0 0.01
4/20/2018 7:00 AM 0.02 M M M M snow flurries in afternoon yesterday
4/25/2018 7:00 AM 1.43 M M M M light rain still
4/26/2018 6:12 AM 0.03 M M M M clear
4/27/2018 7:00 AM 0.33 M M M M
4/28/2018 7:00 AM 0.07 M M M M dense fog
4/30/2018 7:00 AM 0.00 M M M M
5/2/2018 7:00 AM 0.00 M M M M pollen
5/5/2018 7:00 AM 0.02 M M M M
5/6/2018 7:00 AM 0.05 M M M M overcast
5/7/2018 7:00 AM 0.03 M M M M
5/13/2018 7:00 AM 0.64 M M M M
5/14/2018 7:00 AM 0.18 M M M M
5/15/2018 7:00 AM 0.06 M M M M
5/16/2018 7:00 AM 2.19 M M M M
5/17/2018 7:00 AM 1.55 M M M M rain continues
5/18/2018 7:00 AM 0.55 M M M M currently not raining, still searching for gopher wood however
5/19/2018 7:00 AM 1.08 M M M M rain continues
5/20/2018 7:00 AM 0.40 M M M M
5/23/2018 7:00 AM 0.67 M M M M
5/25/2018 7:00 AM 0.00 M M M M
5/27/2018 7:00 AM 0.02 M M M M
5/28/2018 7:00 AM 1.26 M M M M overcast
5/29/2018 7:00 AM 0.05 M M M M light rain
5/31/2018 7:00 AM 0.04 M M M M light fog
6/1/2018 7:00 AM 0.24 M M M M fog
6/2/2018 7:00 AM T M M M M
6/3/2018 7:00 AM 0.26 M M M M
6/4/2018 7:00 AM 1.27 M M M M
6/5/2018 7:00 AM M M M M M {EDIT: Observer reported 0.27 for new precip. Surrounding reports of 0.00's and QPE data indicate this could be a date error. Changed report of 0.27 to NA until observer can be contacted to verify. Submission Time Before EDIT: 6/06/2018 8:12 AM CoCoSTAFF DNT}
6/6/2018 7:00 AM 0.34 M M M M sun!
6/10/2018 7:00 AM 0.06 M M M M
6/11/2018 7:00 AM 1.82 M M M M rain continues. Love new sump pump.
6/21/2018 7:00 AM 0.03 M M M M
7/6/2018 6:15 AM 0.27 M M M M
7/7/2018 7:00 AM 0.04 M M M M
7/16/2018 7:00 AM 0.10 M M M M dew point, temp just about the same at 70 degrees.
7/18/2018 7:00 AM 0.34 M M M M air feels lighter
7/22/2018 7:00 AM 2.23 M M M M
7/23/2018 7:00 AM 2.19 M M M M
7/24/2018 7:00 AM 1.32 M M M M rain
7/25/2018 7:00 AM 2.02 M M M M
7/26/2018 7:00 AM 1.33 M M M M
7/27/2018 7:00 AM 0.05 M M M M
7/28/2018 7:00 AM 2.59 M M M M sump pump constant.
7/31/2018 7:00 AM 0.09 M M M M
8/1/2018 7:00 AM 0.18 M M M M
8/2/2018 7:00 AM 1.10 M M M M
8/3/2018 7:00 AM 0.43 M M M M
8/4/2018 7:00 AM 0.46 M M M M
8/5/2018 7:00 AM T M M M M
8/6/2018 7:00 AM 0.00 M M M M
8/8/2018 7:00 AM 0.04 M M M M
8/9/2018 7:00 AM 0.84 M M M M
8/12/2018 7:00 AM 0.02 M M M M
8/13/2018 7:00 AM 0.13 M M M M
8/14/2018 7:00 AM 0.79 M M M M
8/18/2018 7:00 AM 0.08 M M M M
8/20/2018 7:00 AM 0.15 M M M M
8/21/2018 7:00 AM T M M M M
8/22/2018 7:00 AM 1.90 M M M M
8/31/2018 7:00 AM 0.03 M M M M
9/1/2018 7:00 AM 1.61 M M M M feels like more rain coming
9/2/2018 7:00 AM 0.03 M M M M
9/3/2018 7:00 AM 0.00 M M M M foggy
9/7/2018 7:00 AM 0.17 M M M M more lightning than rain with yesterday's storm
9/8/2018 7:00 AM 0.29 M M M M raining
9/9/2018 7:00 AM 1.90 M M M M raining
9/10/2018 7:00 AM 1.82 M M M M light rain
9/11/2018 7:00 AM 0.11 M M M M light rain. fog
9/12/2018 7:00 AM 0.06 M M M M fog
9/13/2018 7:00 AM 0.04 M M M M
9/14/2018 7:00 AM T M M M M
9/15/2018 7:00 AM 0.01 M M M M grey
9/18/2018 7:00 AM 2.47 M M M M grey, light drizzle
9/19/2018 7:00 AM 0.29 M M M M
9/22/2018 7:00 AM 0.08 M M M M
9/23/2018 7:00 AM 0.04 M M M M light rain
9/24/2018 7:00 AM 1.12 M M M M light rain



Start Date End Date & Time Duration in Days Precipitation Snow Depth Snow Depth SWE Notes
5/11/2018 5/12/2018 5:31 PM 2 0.35 M M
6/22/2018 7/04/2018 5:37 PM 13 0.62 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