Station Overview Station Location
Station Number MD-HR-18 Latitude 39.5641
Station Name Bel Air 2.9 NE Longitude -76.3079
County Harford Elevation (ft) 375



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 09 3.95 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
Nov 09 3.71 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
Dec 09 3.75 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
Jan 10 3.40 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
Feb 10 2.90 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
March 10 4.20 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
April 10 3.75 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
May 10 4.38 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
June 10 3.97 0.88 18 0.83 16 0.05 2 1 3 1 0.0 0 0
July 10 4.64 4.83 33 2.87 29 1.96 4 1 8 0 0.0 0 0
Aug 10 3.77 3.68 32 0.55 28 3.13 4 2 5 1 0.0 0 0
Sept 10 4.43 2.20 33 0.61 23 1.59 10 3 2 0 0.0 0 0
Water Year Totals: 46.85" 11.59" 116 days 4.86" 96 6.73" 20 days 7 18 days 2 days 0.0" 0 days 0 days



Days in Water Year Cell Color Key
        Daily Observation with Prcp         Missing Day
        Multiday Observation         Daily/Multiday Observation Conflict

Day of Year Daily Prcp Multiday Prcp
10/1/2009
10/2/2009
10/3/2009
10/4/2009
10/5/2009
10/6/2009
10/7/2009
10/8/2009
10/9/2009
10/10/2009
10/11/2009
10/12/2009
10/13/2009
10/14/2009
10/15/2009
10/16/2009
10/17/2009
10/18/2009
10/19/2009
10/20/2009
10/21/2009
10/22/2009
10/23/2009
10/24/2009
10/25/2009
10/26/2009
10/27/2009
10/28/2009
10/29/2009
10/30/2009
10/31/2009
11/1/2009
11/2/2009
11/3/2009
11/4/2009
11/5/2009
11/6/2009
11/7/2009
11/8/2009
11/9/2009
11/10/2009
11/11/2009
11/12/2009
11/13/2009
11/14/2009
11/15/2009
11/16/2009
11/17/2009
11/18/2009
11/19/2009
11/20/2009
11/21/2009
11/22/2009
11/23/2009
11/24/2009
11/25/2009
11/26/2009
11/27/2009
11/28/2009
11/29/2009
11/30/2009
12/1/2009
12/2/2009
12/3/2009
12/4/2009
12/5/2009
12/6/2009
12/7/2009
12/8/2009
12/9/2009
12/10/2009
12/11/2009
12/12/2009
12/13/2009
12/14/2009
12/15/2009
12/16/2009
12/17/2009
12/18/2009
12/19/2009
12/20/2009
12/21/2009
12/22/2009
12/23/2009
12/24/2009
12/25/2009
12/26/2009
12/27/2009
12/28/2009
12/29/2009
12/30/2009
12/31/2009
Day of YearDaily PrcpMultiday Prcp
1/1/2010
1/2/2010
1/3/2010
1/4/2010
1/5/2010
1/6/2010
1/7/2010
1/8/2010
1/9/2010
1/10/2010
1/11/2010
1/12/2010
1/13/2010
1/14/2010
1/15/2010
1/16/2010
1/17/2010
1/18/2010
1/19/2010
1/20/2010
1/21/2010
1/22/2010
1/23/2010
1/24/2010
1/25/2010
1/26/2010
1/27/2010
1/28/2010
1/29/2010
1/30/2010
1/31/2010
2/1/2010
2/2/2010
2/3/2010
2/4/2010
2/5/2010
2/6/2010
2/7/2010
2/8/2010
2/9/2010
2/10/2010
2/11/2010
2/12/2010
2/13/2010
2/14/2010
2/15/2010
2/16/2010
2/17/2010
2/18/2010
2/19/2010
2/20/2010
2/21/2010
2/22/2010
2/23/2010
2/24/2010
2/25/2010
2/26/2010
2/27/2010
2/28/2010
3/1/2010
3/2/2010
3/3/2010
3/4/2010
3/5/2010
3/6/2010
3/7/2010
3/8/2010
3/9/2010
3/10/2010
3/11/2010
3/12/2010
3/13/2010
3/14/2010
3/15/2010
3/16/2010
3/17/2010
3/18/2010
3/19/2010
3/20/2010
3/21/2010
3/22/2010
3/23/2010
3/24/2010
3/25/2010
3/26/2010
3/27/2010
3/28/2010
3/29/2010
3/30/2010
3/31/2010
Day of YearDaily PrcpMultiday Prcp
4/1/2010
4/2/2010
4/3/2010
4/4/2010
4/5/2010
4/6/2010
4/7/2010
4/8/2010
4/9/2010
4/10/2010
4/11/2010
4/12/2010
4/13/2010
4/14/2010
4/15/2010
4/16/2010
4/17/2010
4/18/2010
4/19/2010
4/20/2010
4/21/2010
4/22/2010
4/23/2010
4/24/2010
4/25/2010
4/26/2010
4/27/2010
4/28/2010
4/29/2010
4/30/2010
5/1/2010
5/2/2010
5/3/2010
5/4/2010
5/5/2010
5/6/2010
5/7/2010
5/8/2010
5/9/2010
5/10/2010
5/11/2010
5/12/2010
5/13/2010
5/14/2010
5/15/2010
5/16/2010
5/17/2010
5/18/2010
5/19/2010
5/20/2010
5/21/2010
5/22/2010
5/23/2010
5/24/2010
5/25/2010
5/26/2010
5/27/2010
5/28/2010
5/29/2010
5/30/2010
5/31/2010
6/1/2010
6/2/2010
6/3/2010
6/4/2010
6/5/2010
6/6/2010
6/7/2010
6/8/2010
6/9/2010
6/10/2010
6/11/2010
6/12/2010
6/13/2010
6/14/2010
6/15/2010 0.00
6/16/2010 T **
6/17/2010 0.05 0.05
6/18/2010 0.00
6/19/2010 0.00
6/20/2010 0.00
6/21/2010 0.00
6/22/2010 0.00
6/23/2010 0.54
6/24/2010 0.00
6/25/2010 0.00
6/26/2010 0.00
6/27/2010 0.00
6/28/2010 0.00
6/29/2010 0.24
6/30/2010 0.00
Day of YearDaily PrcpMultiday Prcp
7/1/2010 0.00
7/2/2010 0.00
7/3/2010 0.00
7/4/2010 0.00
7/5/2010 0.00
7/6/2010 0.00
7/7/2010 0.00
7/8/2010 0.00
7/9/2010 0.00 **
7/10/2010 **
7/11/2010 **
7/12/2010 0.00 1.96
7/13/2010 0.49
7/14/2010 1.10
7/15/2010 0.38
7/16/2010 0.00
7/17/2010 0.00
7/18/2010 0.00
7/19/2010 0.02
7/20/2010 0.10
7/21/2010 0.04
7/22/2010 0.00
7/23/2010 0.00
7/24/2010 0.00
7/25/2010 0.00
7/26/2010 0.08
7/27/2010 0.00
7/28/2010 0.00
7/29/2010 0.00
7/30/2010 0.66
7/31/2010 0.00
8/1/2010 0.00
8/2/2010 0.00
8/3/2010 0.00
8/4/2010 0.00 **
8/5/2010 0.91
8/6/2010
8/7/2010 0.00
8/8/2010 0.00
8/9/2010 0.00
8/10/2010 0.00
8/11/2010 0.00
8/12/2010 0.00 **
8/13/2010 2.22
8/14/2010 0.00
8/15/2010 0.00
8/16/2010 0.30
8/17/2010 0.00
8/18/2010 0.01
8/19/2010 0.07
8/20/2010 0.00
8/21/2010 0.00
8/22/2010 T
8/23/2010 0.16
8/24/2010 0.01
8/25/2010 0.00
8/26/2010 0.00
8/27/2010 0.00
8/28/2010 0.00
8/29/2010 0.00
8/30/2010 0.00
8/31/2010 0.00
9/1/2010 0.00
9/2/2010 0.00
9/3/2010 0.00
9/4/2010 0.00
9/5/2010 0.00
9/6/2010 0.00
9/7/2010 0.00
9/8/2010 0.00
9/9/2010 0.00
9/10/2010 0.00
9/11/2010 0.00
9/12/2010 **
9/13/2010 **
9/14/2010 0.00 **
9/15/2010 0.00 0.33
9/16/2010 0.00
9/17/2010 0.22
9/18/2010 0.00
9/19/2010 0.00
9/20/2010 0.00
9/21/2010 0.00
9/22/2010 0.00
9/23/2010 0.39
9/24/2010 0.00
9/25/2010 0.00
9/26/2010 **
9/27/2010 **
9/28/2010 **
9/29/2010 0.33
9/30/2010 **



Observation Date Observation Time Precipitation Snowfall Snowfall SWE Snow Depth Snow SWE Notes
6/15/2010 5:30 AM 0.00 0.0 M M M
6/16/2010 5:30 AM T M M M M
6/17/2010 7:00 AM 0.05 M M M M
6/18/2010 5:30 AM 0.00 0.0 M M M
6/19/2010 5:30 AM 0.00 0.0 M M M
6/20/2010 5:30 AM 0.00 0.0 M M M
6/21/2010 5:30 AM 0.00 0.0 M M M
6/22/2010 5:30 AM 0.00 0.0 M M M
6/23/2010 7:00 AM 0.54 M M M M At approximately 6:55pm, on Tuesday June 22, 2010, a quick moving severe thunderstorm was observed within the proximity of Station MD-HR-18. This storm had associated with it brief heavy down pours and hail up to the size of quarters along with frequent lightning. 0.54 inches of rain along with dime to quarter-sized hail fell within a time period of 10 to 15 minutes. The storm conditions were diligently observed and was followed up with several reports to the National Weather Service.
6/24/2010 7:45 AM 0.00 0.0 M M M
6/25/2010 7:00 AM 0.00 0.0 M M M
6/26/2010 7:00 AM 0.00 0.0 M M M
6/27/2010 7:00 AM 0.00 0.0 M M M
6/28/2010 5:30 AM 0.00 0.0 M M M
6/29/2010 5:30 AM 0.24 M M M M
6/30/2010 6:00 AM 0.00 0.0 M M M
7/1/2010 6:00 AM 0.00 0.0 M M M
7/2/2010 7:00 AM 0.00 0.0 M M M
7/3/2010 7:00 AM 0.00 0.0 M M M
7/4/2010 7:00 AM 0.00 0.0 M M M
7/5/2010 7:00 AM 0.00 0.0 M M M
7/6/2010 5:30 AM 0.00 0.0 M M M
7/7/2010 5:30 AM 0.00 0.0 M M M Very hot. And Dry.
7/8/2010 5:30 AM 0.00 0.0 M M M
7/9/2010 5:30 AM 0.00 0.0 M M M
7/12/2010 5:30 AM 0.00 0.0 M M M
7/13/2010 5:30 AM 0.49 M M M M
7/14/2010 5:30 AM 1.10 M M M M
7/15/2010 8:00 AM 0.38 M M M M
7/16/2010 7:00 AM 0.00 0.0 M M M
7/17/2010 7:00 AM 0.00 0.0 M M M
7/18/2010 7:00 AM 0.00 0.0 M M M
7/19/2010 5:30 AM 0.02 0.0 M M M
7/20/2010 5:30 AM 0.10 M M M M
7/21/2010 7:00 AM 0.04 M M M M
7/22/2010 7:00 AM 0.00 0.0 M M M
7/23/2010 7:00 AM 0.00 0.0 M M M
7/24/2010 7:00 AM 0.00 0.0 M M M
7/25/2010 7:00 AM 0.00 0.0 M M M
7/26/2010 7:00 AM 0.08 M M M M
7/27/2010 7:00 AM 0.00 0.0 M M M
7/28/2010 5:30 AM 0.00 0.0 M M M
7/29/2010 7:00 AM 0.00 0.0 M M M
7/30/2010 7:00 AM 0.66 M M M M
7/31/2010 7:00 AM 0.00 0.0 M M M
8/1/2010 7:00 AM 0.00 0.0 M M M
8/2/2010 7:00 AM 0.00 0.0 M M M
8/3/2010 6:00 AM 0.00 0.0 M M M
8/4/2010 7:00 AM 0.00 0.0 M M M
8/7/2010 7:00 AM 0.00 0.0 M M M
8/8/2010 7:00 AM 0.00 0.0 M M M
8/9/2010 7:00 AM 0.00 0.0 M M M
8/10/2010 7:00 AM 0.00 0.0 M M M
8/11/2010 7:00 AM 0.00 0.0 M M M
8/12/2010 7:00 AM 0.00 0.0 M M M
8/14/2010 7:00 AM 0.00 0.0 M M M
8/15/2010 7:00 AM 0.00 0.0 M M M
8/16/2010 7:00 AM 0.30 M M M M
8/17/2010 7:00 AM 0.00 0.0 M M M
8/18/2010 8:00 AM 0.01 M M M M
8/19/2010 7:00 AM 0.07 M M M M
8/20/2010 7:00 AM 0.00 0.0 M M M
8/21/2010 7:00 AM 0.00 0.0 M M M
8/22/2010 7:00 AM T M M M M
8/23/2010 7:00 AM 0.16 M M M M
8/24/2010 8:30 AM 0.01 M M M M
8/25/2010 7:00 AM 0.00 0.0 M M M
8/26/2010 8:00 AM 0.00 0.0 M M M
8/27/2010 7:00 AM 0.00 0.0 M M M
8/28/2010 7:00 AM 0.00 0.0 M M M
8/29/2010 7:00 AM 0.00 0.0 M M M
8/30/2010 7:00 AM 0.00 0.0 M M M
8/31/2010 7:00 AM 0.00 0.0 M M M
9/1/2010 7:00 AM 0.00 0.0 M M M
9/2/2010 7:00 AM 0.00 0.0 M M M
9/3/2010 7:00 AM 0.00 0.0 M M M
9/4/2010 7:00 AM 0.00 0.0 M M M
9/5/2010 7:00 AM 0.00 0.0 M M M
9/6/2010 7:00 AM 0.00 0.0 M M M
9/7/2010 7:00 AM 0.00 0.0 M M M
9/8/2010 7:00 AM 0.00 0.0 M M M
9/9/2010 7:00 AM 0.00 0.0 M M M
9/10/2010 7:00 AM 0.00 0.0 M M M
9/11/2010 7:00 AM 0.00 0.0 M M M
9/14/2010 7:00 AM 0.00 0.0 M M M
9/15/2010 7:00 AM 0.00 0.0 M M M
9/16/2010 7:00 AM 0.00 0.0 M M M
9/17/2010 7:00 AM 0.22 M M M M
9/18/2010 7:00 AM 0.00 0.0 M M M
9/19/2010 7:00 AM 0.00 0.0 M M M
9/20/2010 7:00 AM 0.00 0.0 M M M
9/21/2010 7:00 AM 0.00 0.0 M M M
9/22/2010 7:00 AM 0.00 0.0 M M M
9/23/2010 7:00 AM 0.39 M M M M
9/24/2010 7:00 AM 0.00 0.0 M M M
9/25/2010 7:00 AM 0.00 0.0 M M M



Start Date End Date & Time Duration in Days Precipitation Snow Depth Snow Depth SWE Notes
6/16/2010 6/17/2010 8:45 PM 2 0.05 0.0 0.00
7/9/2010 7/12/2010 5:30 AM 4 1.96 M M
8/4/2010 8/05/2010 12:00 AM 2 0.91 M M
8/12/2010 8/13/2010 12:00 AM 2 2.22 M M
9/12/2010 9/15/2010 6:15 PM 4 0.33 M M
9/26/2010 9/27/2010 8:30 AM 2 0.93 M M
9/27/2010 9/29/2010 7:30 AM 3 0.33 M M
9/30/2010 10/03/2010 8:00 AM 4 7.35 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
6/22/2010 7:03 PM 1" Quarter Size 1/2" Grape 1/4" Pea Size Hard|Clear Ice|White Ice 5 2min minor leaf damage.shredded leaves Continuous True After rain Same time as smaller hail 10-20