Station Overview Station Location
Station Number CT-NH-31 Latitude 41.334459
Station Name Derby 1.6 WNW Longitude -73.111354
County New Haven Elevation (ft) 129



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 4.67 11.24 8 0.00 0 11.24 8 2 0 0 0.0 0 0
Nov 17 4.37 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
Dec 17 3.94 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
Jan 18 3.89 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
Feb 18 3.20 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
March 18 4.66 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
April 18 4.71 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
May 18 4.35 3.39 9 3.39 9 0.00 0 0 6 0 0.0 0 0
June 18 4.21 3.75 28 1.70 7 2.05 21 5 4 0 0.0 0 0
July 18 3.98 5.94 27 3.55 13 2.39 14 4 6 0 0.0 0 0
Aug 18 4.00 7.43 30 4.44 16 2.99 14 4 9 3 0.0 0 0
Sept 18 4.16 9.25 27 6.81 7 2.44 20 2 4 0 0.0 0 0
Water Year Totals: 50.14" 41.00" 129 days 19.89" 52 21.11" 77 days 17 29 days 3 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
10/1/2017
10/2/2017
10/3/2017
10/4/2017
10/5/2017
10/6/2017
10/7/2017
10/8/2017
10/9/2017
10/10/2017
10/11/2017
10/12/2017
10/13/2017
10/14/2017
10/15/2017
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 **
10/25/2017 **
10/26/2017 5.59
10/27/2017
10/28/2017 **
10/29/2017 **
10/30/2017 **
10/31/2017 5.65
11/1/2017
11/2/2017
11/3/2017
11/4/2017
11/5/2017
11/6/2017
11/7/2017
11/8/2017
11/9/2017
11/10/2017
11/11/2017
11/12/2017
11/13/2017
11/14/2017
11/15/2017
11/16/2017
11/17/2017
11/18/2017
11/19/2017
11/20/2017
11/21/2017
11/22/2017
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
12/2/2017
12/3/2017
12/4/2017
12/5/2017
12/6/2017
12/7/2017
12/8/2017
12/9/2017
12/10/2017
12/11/2017
12/12/2017
12/13/2017
12/14/2017
12/15/2017
12/16/2017
12/17/2017
12/18/2017
12/19/2017
12/20/2017
12/21/2017
12/22/2017
12/23/2017
12/24/2017
12/25/2017
12/26/2017
12/27/2017
12/28/2017
12/29/2017
12/30/2017
12/31/2017
Day of YearDaily PrcpMultiday Prcp
1/1/2018
1/2/2018
1/3/2018
1/4/2018
1/5/2018
1/6/2018
1/7/2018
1/8/2018
1/9/2018
1/10/2018
1/11/2018
1/12/2018
1/13/2018
1/14/2018
1/15/2018
1/16/2018
1/17/2018
1/18/2018
1/19/2018
1/20/2018
1/21/2018
1/22/2018
1/23/2018
1/24/2018
1/25/2018
1/26/2018
1/27/2018
1/28/2018
1/29/2018
1/30/2018
1/31/2018
2/1/2018
2/2/2018
2/3/2018
2/4/2018
2/5/2018
2/6/2018
2/7/2018
2/8/2018
2/9/2018
2/10/2018
2/11/2018
2/12/2018
2/13/2018
2/14/2018
2/15/2018
2/16/2018
2/17/2018
2/18/2018
2/19/2018
2/20/2018
2/21/2018
2/22/2018
2/23/2018
2/24/2018
2/25/2018
2/26/2018
2/27/2018
2/28/2018
3/1/2018
3/2/2018
3/3/2018
3/4/2018
3/5/2018
3/6/2018
3/7/2018
3/8/2018
3/9/2018
3/10/2018
3/11/2018
3/12/2018
3/13/2018
3/14/2018
3/15/2018
3/16/2018
3/17/2018
3/18/2018
3/19/2018
3/20/2018
3/21/2018
3/22/2018
3/23/2018
3/24/2018
3/25/2018
3/26/2018
3/27/2018
3/28/2018
3/29/2018
3/30/2018
3/31/2018
Day of YearDaily PrcpMultiday Prcp
4/1/2018
4/2/2018
4/3/2018
4/4/2018
4/5/2018
4/6/2018
4/7/2018
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
4/17/2018
4/18/2018
4/19/2018
4/20/2018
4/21/2018
4/22/2018
4/23/2018
4/24/2018
4/25/2018
4/26/2018
4/27/2018
4/28/2018
4/29/2018
4/30/2018
5/1/2018
5/2/2018
5/3/2018
5/4/2018
5/5/2018
5/6/2018
5/7/2018
5/8/2018
5/9/2018
5/10/2018
5/11/2018
5/12/2018
5/13/2018
5/14/2018
5/15/2018
5/16/2018 1.33
5/17/2018 0.70
5/18/2018 0.11
5/19/2018 0.12
5/20/2018
5/21/2018
5/22/2018 0.49
5/23/2018 0.64
5/24/2018 0.00
5/25/2018
5/26/2018
5/27/2018
5/28/2018
5/29/2018 0.00
5/30/2018
5/31/2018 0.00
6/1/2018 0.22
6/2/2018 **
6/3/2018 **
6/4/2018 **
6/5/2018 **
6/6/2018 0.99
6/7/2018
6/8/2018 **
6/9/2018 **
6/10/2018 **
6/11/2018 **
6/12/2018 0.00
6/13/2018 0.00
6/14/2018 **
6/15/2018 **
6/16/2018 **
6/17/2018 **
6/18/2018 **
6/19/2018 **
6/20/2018 0.21
6/21/2018 0.09
6/22/2018 0.00
6/23/2018
6/24/2018
6/25/2018
6/26/2018 **
6/27/2018 0.85
6/28/2018 1.21
6/29/2018 0.18
6/30/2018 0.00
Day of YearDaily PrcpMultiday Prcp
7/1/2018
7/2/2018
7/3/2018
7/4/2018
7/5/2018 0.00
7/6/2018 0.00
7/7/2018 0.18
7/8/2018 **
7/9/2018 **
7/10/2018 **
7/11/2018 **
7/12/2018 0.00
7/13/2018 0.00
7/14/2018 0.00
7/15/2018 **
7/16/2018 **
7/17/2018 0.35
7/18/2018 2.00
7/19/2018 0.00
7/20/2018 0.00
7/21/2018 0.00
7/22/2018 **
7/23/2018 **
7/24/2018 1.63
7/25/2018 0.10
7/26/2018 1.11
7/27/2018 0.01
7/28/2018 0.15
7/29/2018 **
7/30/2018 **
7/31/2018 0.41
8/1/2018 0.08
8/2/2018 1.62
8/3/2018 0.41
8/4/2018 **
8/5/2018 **
8/6/2018 **
8/7/2018 0.30
8/8/2018 T
8/9/2018 0.80
8/10/2018 0.01
8/11/2018 **
8/12/2018 **
8/13/2018 **
8/14/2018 2.30
8/15/2018 0.26
8/16/2018 T
8/17/2018
8/18/2018 1.00
8/19/2018 **
8/20/2018 **
8/21/2018 0.39
8/22/2018 0.24
8/23/2018 0.02
8/24/2018 T
8/25/2018 0.00
8/26/2018 **
8/27/2018 **
8/28/2018 0.00
8/29/2018 0.00
8/30/2018 0.00
8/31/2018 0.00
9/1/2018 0.00
9/2/2018
9/3/2018
9/4/2018
9/5/2018 0.00
9/6/2018 0.00
9/7/2018 0.77
9/8/2018 0.01
9/9/2018 **
9/10/2018 **
9/11/2018 **
9/12/2018 **
9/13/2018 **
9/14/2018 **
9/15/2018 **
9/16/2018 **
9/17/2018 **
9/18/2018 1.96
9/19/2018 0.23
9/20/2018 **
9/21/2018 **
9/22/2018 **
9/23/2018 **
9/24/2018 **
9/25/2018 0.48
9/26/2018 5.80
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
5/16/2018 9:30 AM 1.33 M M M M NA
5/17/2018 9:00 AM 0.70 M M M M There was .70 inches of precipitation recorded in the past 24/hrs.
5/18/2018 9:30 AM 0.11 M M M M The observed rain that fell within the past 24 hours was .11 inches.
5/19/2018 9:30 AM 0.12 M M M M The precipitation total within the past 24 hours was observed at 0.12 in.
5/22/2018 9:30 AM 0.49 M M M M This precipitation data was collected between the 19th and the 22nd.
5/23/2018 9:30 AM 0.64 M M M M This is the amount of precipitation recorded within the past 24 hours.
5/24/2018 9:30 AM 0.00 0.0 M M M Observed during the past 24 hours.
5/29/2018 9:00 AM 0.00 0.0 M M M
5/31/2018 9:30 AM 0.00 0.0 M M M There was 0.00in of precipitation recorded in the past 24 hours.
6/1/2018 9:30 AM 0.22 M M M M There was .22in of precipitation recorded in the past 24hrs.
6/13/2018 9:30 AM 0.00 0.0 M M M There were 0.00 in recorded within the past 24 hours.
6/21/2018 9:30 AM 0.09 M M M M
6/22/2018 9:00 AM 0.00 0.0 M M M
6/28/2018 8:50 AM 1.21 M M M M
6/29/2018 9:30 AM 0.18 M M M M
6/30/2018 9:30 AM 0.00 0.0 M M M
7/5/2018 9:30 AM 0.00 0.0 M M M
7/6/2018 9:30 AM 0.00 0.0 M M M
7/7/2018 9:30 AM 0.18 M M M M
7/13/2018 9:30 AM 0.00 0.0 M M M
7/14/2018 9:30 AM 0.00 0.0 M M M
7/18/2018 9:30 AM 2.00 M M M M
7/19/2018 9:30 AM 0.00 0.0 M M M
7/20/2018 9:30 AM 0.00 0.0 M M M
7/21/2018 9:30 AM 0.00 0.0 M M M
7/25/2018 9:30 AM 0.10 M M M M
7/26/2018 9:30 AM 1.11 M M M M
7/27/2018 9:30 AM 0.01 M M M M
7/28/2018 9:30 AM 0.15 M M M M
8/1/2018 9:30 AM 0.08 M M M M
8/2/2018 9:30 AM 1.62 M M M M
8/3/2018 9:30 AM 0.41 M M M M
8/8/2018 9:30 AM T M M M M
8/9/2018 9:30 AM 0.80 M M M M
8/10/2018 9:30 AM 0.01 M M M M
8/15/2018 9:30 AM 0.26 M M M M
8/16/2018 9:30 AM T M M M M
8/18/2018 9:30 AM 1.00 M M M M
8/22/2018 9:00 AM 0.24 M M M M
8/23/2018 9:30 AM 0.02 M M M M
8/24/2018 9:30 AM T M M M M
8/25/2018 9:30 AM 0.00 0.0 M M M
8/29/2018 9:30 AM 0.00 0.0 M M M
8/30/2018 9:30 AM 0.00 0.0 M M M
8/31/2018 9:30 AM 0.00 0.0 M M M
9/1/2018 9:30 AM 0.00 0.0 M M M
9/5/2018 9:30 AM 0.00 0.0 M M M
9/6/2018 9:30 AM 0.00 0.0 M M M
9/7/2018 9:30 AM 0.77 M M M M
9/8/2018 9:30 AM 0.01 M M M M
9/19/2018 9:30 AM 0.23 M M M M
9/26/2018 9:30 AM 5.80 M M M M



Start Date End Date & Time Duration in Days Precipitation Snow Depth Snow Depth SWE Notes
10/23/2017 10/26/2017 9:00 AM 4 5.59 M M
10/28/2017 10/31/2017 9:00 AM 4 5.65 M M
6/2/2018 6/06/2018 9:30 AM 5 0.99 M M
6/8/2018 6/12/2018 9:30 AM 5 0.00 0.0 0.00
6/11/2018 6/12/2018 9:00 AM 2 0.00 M M
6/14/2018 6/20/2018 9:00 AM 7 0.21 M M
6/26/2018 6/27/2018 9:30 AM 2 0.85 M M
7/8/2018 7/12/2018 9:30 AM 5 0.00 M M
7/15/2018 7/17/2018 9:30 AM 3 0.35 M M
7/22/2018 7/24/2018 9:30 AM 3 1.63 M M
7/29/2018 7/31/2018 9:30 AM 3 0.41 M M
8/4/2018 8/07/2018 9:30 AM 4 0.30 M M
8/11/2018 8/14/2018 9:30 AM 4 2.30 M M
8/19/2018 8/21/2018 9:30 AM 3 0.39 M M
8/26/2018 8/28/2018 9:30 AM 3 0.00 M M
9/9/2018 9/18/2018 9:00 AM 10 1.96 M M
9/20/2018 9/25/2018 9:30 AM 6 0.48 M M
9/27/2018 10/02/2018 9:30 AM 6 0.71 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