Station Overview Station Location
Station Number NY-SF-101 Latitude 40.7223
Station Name East Islip 0.4 ESE Longitude -73.1802
County Suffolk Elevation (ft) 10



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 4.09 6.33 33 2.50 29 3.83 4 2 8 1 0.0 0 0
Nov 17 3.95 2.59 30 1.69 28 0.90 2 1 4 3 0.0 0 0
Dec 17 4.12 2.13 31 1.47 29 0.66 2 1 7 0 0.0 0 0
Jan 18 3.79 3.42 31 0.46 21 2.96 10 5 2 1 0.0 0 0
Feb 18 3.17 6.43 27 3.11 21 3.32 6 3 6 2 0.0 0 0
March 18 4.54 8.78 31 0.00 14 8.78 17 4 0 0 0.0 0 0
April 18 4.43 3.81 30 0.00 3 3.81 27 7 0 0 0.0 0 0
May 18 3.95 0.00 31 0.00 0 0.00 31 0 0 0 0.0 0 0
June 18 4.28 6.86 12 1.11 8 5.75 4 2 4 0 0.0 0 0
July 18 3.93 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
Aug 18 4.32 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
Sept 18 3.85 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
Water Year Totals: 48.42" 40.35" 256 days 10.34" 153 30.01" 103 days 25 31 days 7 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 0.13
10/2/2017 0.00
10/3/2017 0.00
10/4/2017 0.00
10/5/2017 0.00
10/6/2017 0.03
10/7/2017 0.00
10/8/2017 0.00
10/9/2017 0.15
10/10/2017 0.39
10/11/2017 0.00
10/12/2017 0.08
10/13/2017 0.00
10/14/2017 0.35 **
10/15/2017 0.01 0.36
10/16/2017 0.00
10/17/2017 0.00
10/18/2017 0.00
10/19/2017 0.00
10/20/2017 0.00
10/21/2017 0.00
10/22/2017 0.00
10/23/2017 0.00
10/24/2017 0.00
10/25/2017 1.36
10/26/2017 T
10/27/2017 0.00
10/28/2017 0.00
10/29/2017 **
10/30/2017 3.47
10/31/2017 0.00
11/1/2017 0.00
11/2/2017 0.00
11/3/2017 T
11/4/2017 0.00
11/5/2017 0.05
11/6/2017 T
11/7/2017 0.00
11/8/2017 0.75
11/9/2017 0.00
11/10/2017 0.00
11/11/2017 0.00
11/12/2017 0.00
11/13/2017 0.00
11/14/2017 0.00
11/15/2017 0.00
11/16/2017 0.00
11/17/2017 0.36
11/18/2017 0.00
11/19/2017 0.53
11/20/2017 0.00
11/21/2017 0.00
11/22/2017 **
11/23/2017 0.90
11/24/2017 0.00
11/25/2017 0.00
11/26/2017 0.00
11/27/2017 0.00
11/28/2017 0.00
11/29/2017 T
11/30/2017 0.00
12/1/2017 0.01
12/2/2017 0.00
12/3/2017 0.00
12/4/2017 0.00
12/5/2017 0.00
12/6/2017 0.45
12/7/2017 0.00
12/8/2017 0.00
12/9/2017 0.00
12/10/2017 0.37
12/11/2017 0.00
12/12/2017 0.00
12/13/2017 0.00
12/14/2017 0.13
12/15/2017 0.00
12/16/2017 0.20
12/17/2017 0.00
12/18/2017 0.00
12/19/2017 0.00
12/20/2017 0.00
12/21/2017 0.00
12/22/2017 0.00
12/23/2017 **
12/24/2017 0.66
12/25/2017 0.22
12/26/2017 0.00
12/27/2017 0.00
12/28/2017 0.00
12/29/2017 0.00
12/30/2017 0.00
12/31/2017 0.09
Day of YearDaily PrcpMultiday Prcp
1/1/2018 0.00
1/2/2018 0.00
1/3/2018 0.00
1/4/2018 **
1/5/2018 1.49
1/6/2018 0.00
1/7/2018 0.00
1/8/2018 0.00
1/9/2018 0.05
1/10/2018 0.00
1/11/2018 0.00
1/12/2018 0.00
1/13/2018 0.41
1/14/2018 0.00
1/15/2018 0.00
1/16/2018 0.00
1/17/2018 **
1/18/2018 0.27
1/19/2018 0.00
1/20/2018 0.00
1/21/2018 0.00
1/22/2018 T
1/23/2018 **
1/24/2018 0.75
1/25/2018 0.00
1/26/2018 0.00
1/27/2018 0.00
1/28/2018 **
1/29/2018 0.25
1/30/2018 **
1/31/2018 0.20
2/1/2018 0.00
2/2/2018 0.27
2/3/2018 0.00
2/4/2018 0.00
2/5/2018 1.10
2/6/2018 0.00
2/7/2018 0.00
2/8/2018 0.78
2/9/2018 0.00
2/10/2018 T
2/11/2018 **
2/12/2018 2.04
2/13/2018 0.00
2/14/2018 0.00
2/15/2018 0.21
2/16/2018
2/17/2018 0.22
2/18/2018 0.53
2/19/2018 0.00
2/20/2018 0.00
2/21/2018 0.00
2/22/2018 T
2/23/2018 **
2/24/2018 0.25
2/25/2018 **
2/26/2018 1.03
2/27/2018 0.00
2/28/2018 0.00
3/1/2018 0.00
3/2/2018 **
3/3/2018 4.56
3/4/2018 0.00
3/5/2018 0.00
3/6/2018 0.00
3/7/2018 **
3/8/2018 1.70
3/9/2018 0.00
3/10/2018 0.00
3/11/2018 0.00
3/12/2018 0.00
3/13/2018 **
3/14/2018 0.87
3/15/2018 0.00
3/16/2018 0.00
3/17/2018 0.00
3/18/2018 0.00
3/19/2018 0.00
3/20/2018 0.00
3/21/2018 **
3/22/2018 1.65
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 0.07
4/2/2018
4/3/2018 **
4/4/2018 **
4/5/2018 0.55
4/6/2018 **
4/7/2018 **
4/8/2018 **
4/9/2018 **
4/10/2018 **
4/11/2018 **
4/12/2018 0.13
4/13/2018 0.00
4/14/2018 0.00
4/15/2018 0.00
4/16/2018 **
4/17/2018 1.83
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 0.61
4/27/2018 **
4/28/2018 0.51
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 **
5/17/2018 **
5/18/2018 **
5/19/2018 **
5/20/2018 **
5/21/2018 **
5/22/2018 **
5/23/2018 **
5/24/2018 **
5/25/2018 **
5/26/2018 **
5/27/2018 **
5/28/2018 **
5/29/2018 **
5/30/2018 **
5/31/2018 **
6/1/2018 **
6/2/2018 4.37
6/3/2018 0.15
6/4/2018 **
6/5/2018 1.38
6/6/2018 0.04
6/7/2018 0.00
6/8/2018 0.00
6/9/2018 0.00
6/10/2018 0.00
6/11/2018 0.01
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 0.91
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
7/5/2018
7/6/2018
7/7/2018
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
7/17/2018
7/18/2018
7/19/2018
7/20/2018
7/21/2018
7/22/2018
7/23/2018
7/24/2018
7/25/2018
7/26/2018
7/27/2018
7/28/2018
7/29/2018
7/30/2018
7/31/2018
8/1/2018
8/2/2018
8/3/2018
8/4/2018
8/5/2018
8/6/2018
8/7/2018
8/8/2018
8/9/2018
8/10/2018
8/11/2018
8/12/2018
8/13/2018
8/14/2018
8/15/2018
8/16/2018
8/17/2018
8/18/2018
8/19/2018
8/20/2018
8/21/2018
8/22/2018
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
9/1/2018
9/2/2018
9/3/2018
9/4/2018
9/5/2018
9/6/2018
9/7/2018
9/8/2018
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
9/19/2018
9/20/2018
9/21/2018
9/22/2018
9/23/2018
9/24/2018
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
10/1/2017 9:00 AM 0.13 M M M M
10/2/2017 9:00 AM 0.00 M M M M
10/3/2017 9:00 AM 0.00 M M M M
10/4/2017 9:00 AM 0.00 M M M M
10/5/2017 9:00 AM 0.00 M M M M
10/6/2017 9:00 AM 0.03 M M M M
10/7/2017 9:00 AM 0.00 M M M M
10/8/2017 9:00 AM 0.00 M M M M
10/9/2017 9:00 AM 0.15 M M M M
10/10/2017 9:00 AM 0.39 M M M M
10/11/2017 9:00 AM 0.00 M M M M
10/12/2017 11:00 AM 0.08 M M M M
10/13/2017 9:00 AM 0.00 M M M M
10/14/2017 9:30 AM 0.35 M M M M
10/15/2017 9:00 AM 0.01 M M M M
10/16/2017 9:00 AM 0.00 M M M M
10/17/2017 9:00 AM 0.00 M M M M
10/18/2017 9:00 AM 0.00 M M M M
10/19/2017 9:00 AM 0.00 M M M M
10/20/2017 9:00 AM 0.00 M M M M
10/21/2017 9:00 AM 0.00 M M M M
10/22/2017 9:00 AM 0.00 M M M M
10/23/2017 9:00 AM 0.00 M M M M
10/24/2017 9:00 AM 0.00 M M M M
10/25/2017 9:00 AM 1.36 M M M M
10/26/2017 9:00 AM T M M M M
10/27/2017 9:00 AM 0.00 0.0 M M M (edit: originally submitted 10/28/2017 11:59 PM as 0" precip, false zero suspected based on radar and nearby sites, observer confirms 0" - SGB 11/14/17)
10/28/2017 9:00 AM 0.00 M M M M
10/31/2017 9:00 AM 0.00 M M M M
11/1/2017 9:00 AM 0.00 M M M M
11/2/2017 9:00 AM 0.00 M M M M
11/3/2017 9:00 AM T M M M M Suspected accumulated dew/fog
11/4/2017 7:00 AM 0.00 M M M M
11/5/2017 7:00 AM 0.05 M M M M
11/6/2017 7:00 AM T M M M M
11/7/2017 7:00 AM 0.00 M M M M
11/8/2017 7:00 AM 0.75 M M M M
11/9/2017 7:00 AM 0.00 M M M M
11/10/2017 7:00 AM 0.00 M M M M
11/11/2017 7:00 AM 0.00 M M M M
11/12/2017 7:00 AM 0.00 M M M M
11/13/2017 7:00 AM 0.00 M M M M
11/14/2017 7:00 AM 0.00 M M M M
11/15/2017 7:00 AM 0.00 M M M M
11/16/2017 7:00 AM 0.00 M M M M
11/17/2017 7:00 AM 0.36 M M M M
11/18/2017 7:00 AM 0.00 M M M M
11/19/2017 9:00 AM 0.53 M M M M
11/20/2017 7:00 AM 0.00 M M M M
11/21/2017 7:00 AM 0.00 M M M M
11/24/2017 7:00 AM 0.00 M M M M
11/25/2017 7:00 AM 0.00 M M M M
11/26/2017 7:00 AM 0.00 M M M M
11/27/2017 7:00 AM 0.00 M M M M
11/28/2017 7:00 AM 0.00 M M M M
11/29/2017 7:00 AM T M M M M
11/30/2017 7:00 AM 0.00 M M M M
12/1/2017 7:00 AM 0.01 M M M M
12/2/2017 7:00 AM 0.00 M M M M
12/3/2017 7:00 AM 0.00 M M M M
12/4/2017 7:00 AM 0.00 M M M M
12/5/2017 7:00 AM 0.00 M M M M
12/6/2017 7:00 AM 0.45 M M M M
12/7/2017 7:00 AM 0.00 M M M M
12/8/2017 7:00 AM 0.00 M M M M
12/9/2017 7:00 AM 0.00 M M M M
12/10/2017 8:00 AM 0.37 M M M M
12/11/2017 7:00 AM 0.00 M M M M
12/12/2017 7:00 AM 0.00 M M M M
12/13/2017 7:00 AM 0.00 M M M M
12/14/2017 7:00 AM 0.13 M M M M (edit: originally submitted 12/15/2017 5:37 PM as 0.00" for 12/14, based on radar and nearby sites 0.13" from 12/15 corresponds to 12/14, switched dates - SGB 12/18/17)
12/15/2017 7:00 AM 0.00 0.0 M M M (edit: originally submitted 12/15/2017 5:36 PM as 0.13" for 12/15, based on radar and nearby sites amt corresponds to 12/14, switched dates - SGB 12/18/17)
12/16/2017 8:30 AM 0.20 M M M M
12/17/2017 8:00 AM 0.00 M M M M
12/18/2017 7:00 AM 0.00 M M M M
12/19/2017 7:00 AM 0.00 M M M M
12/20/2017 7:00 AM 0.00 M M M M
12/21/2017 7:00 AM 0.00 M M M M
12/22/2017 7:00 AM 0.00 M M M M
12/25/2017 9:30 AM 0.22 M M M M
12/26/2017 7:00 AM 0.00 M M M M
12/27/2017 7:00 AM 0.00 M M M M
12/28/2017 7:00 AM 0.00 M M M M
12/29/2017 7:00 AM 0.00 M M M M
12/30/2017 8:00 AM 0.00 M M M M
12/31/2017 8:30 AM 0.09 M M M M
1/1/2018 7:00 AM 0.00 M M M M
1/2/2018 7:00 AM 0.00 M M M M
1/3/2018 7:00 AM 0.00 M M M M
1/6/2018 7:00 AM 0.00 M M M M
1/7/2018 7:00 AM 0.00 M M M M
1/8/2018 7:00 AM 0.00 M M M M
1/9/2018 7:00 AM 0.05 M M M M
1/10/2018 7:00 AM 0.00 M M M M
1/11/2018 7:00 AM 0.00 M M M M
1/12/2018 7:00 AM 0.00 M M M M
1/13/2018 9:00 AM 0.41 M M M M
1/14/2018 7:00 AM 0.00 M M M M
1/15/2018 7:00 AM 0.00 M M M M
1/16/2018 7:00 AM 0.00 M M M M
1/19/2018 7:00 AM 0.00 M M M M
1/20/2018 8:30 AM 0.00 M M M M
1/21/2018 8:00 AM 0.00 M M M M
1/22/2018 7:00 AM T M M M M
1/25/2018 7:00 AM 0.00 M M M M
1/26/2018 7:00 AM 0.00 M M M M
1/27/2018 7:00 AM 0.00 M M M M
2/1/2018 7:00 AM 0.00 M M M M
2/2/2018 7:00 AM 0.27 M M M M
2/3/2018 7:00 AM 0.00 M M M M
2/4/2018 7:00 AM 0.00 M M M M
2/5/2018 7:00 AM 1.10 M M M M
2/6/2018 7:00 AM 0.00 M M M M
2/7/2018 7:00 AM 0.00 M M M M
2/8/2018 7:00 AM 0.78 M M M M
2/9/2018 7:00 AM 0.00 M M M M
2/10/2018 7:00 AM T M M M M
2/13/2018 7:00 AM 0.00 M M M M
2/14/2018 7:00 AM 0.00 M M M M
2/15/2018 7:00 AM 0.21 M M M M
2/17/2018 7:00 AM 0.22 M M M M
2/18/2018 7:00 AM 0.53 M M M M
2/19/2018 7:00 AM 0.00 M M M M
2/20/2018 7:00 AM 0.00 M M M M
2/21/2018 7:00 AM 0.00 M M M M
2/22/2018 7:00 AM T M M M M
2/27/2018 7:00 AM 0.00 M M M M
2/28/2018 7:00 AM 0.00 M M M M
3/1/2018 7:00 AM 0.00 M M M M
3/4/2018 7:00 AM 0.00 M M M M
3/5/2018 7:00 AM 0.00 M M M M
3/6/2018 7:00 AM 0.00 M M M M
3/9/2018 7:00 AM 0.00 M M M M
3/10/2018 7:00 AM 0.00 M M M M
3/11/2018 7:00 AM 0.00 M M M M
3/12/2018 7:00 AM 0.00 M M M M
3/15/2018 7:00 AM 0.00 M M M M
3/16/2018 7:00 AM 0.00 M M M M
3/17/2018 7:00 AM 0.00 M M M M
3/18/2018 7:00 AM 0.00 M M M M
3/19/2018 7:00 AM 0.00 M M M M
3/20/2018 7:00 AM 0.00 M M M M
4/13/2018 7:00 AM 0.00 M M M M
4/14/2018 7:00 AM 0.00 M M M M
4/15/2018 7:00 AM 0.00 M M M M
6/3/2018 7:00 AM 0.15 M M M M
6/6/2018 7:00 AM 0.04 M M M M
6/7/2018 7:00 AM 0.00 M M M M
6/8/2018 7:00 AM 0.00 M M M M
6/9/2018 7:00 AM 0.00 M M M M
6/10/2018 7:00 AM 0.00 M M M M
6/11/2018 7:00 AM 0.01 M M M M
6/21/2018 7:00 AM 0.91 M M M M



Start Date End Date & Time Duration in Days Precipitation Snow Depth Snow Depth SWE Notes
10/14/2017 10/15/2017 9:00 AM 2 0.36 M M
10/29/2017 10/30/2017 9:00 AM 2 3.47 M M
11/22/2017 11/23/2017 7:00 AM 2 0.90 M M (created 12/8/17 by SGB after email conversation with observer, daily report for 11/23 was an accumulation)
12/23/2017 12/24/2017 8:22 AM 2 0.66 M M
1/4/2018 1/05/2018 7:00 AM 2 1.49 14.5 M
1/17/2018 1/18/2018 7:00 AM 2 0.27 M M
1/23/2018 1/24/2018 7:00 AM 2 0.75 M M
1/28/2018 1/29/2018 7:00 AM 2 0.25 M M
1/30/2018 1/31/2018 7:00 AM 2 0.20 M M
2/11/2018 2/12/2018 7:00 AM 2 2.04 M M
2/23/2018 2/24/2018 7:00 AM 2 0.25 M M
2/25/2018 2/26/2018 7:00 AM 2 1.03 M M
3/2/2018 3/03/2018 7:00 AM 2 4.56 M M
3/7/2018 3/08/2018 7:00 AM 2 1.70 M M
3/13/2018 3/14/2018 7:00 AM 2 0.87 M M
3/21/2018 3/22/2018 7:00 AM 2 1.65 15.3 M
3/23/2018 4/01/2018 7:00 AM 10 0.07 M M
4/3/2018 4/05/2018 7:00 AM 3 0.55 M M
4/6/2018 4/08/2018 7:00 AM 3 0.11 M M
4/8/2018 4/12/2018 7:00 AM 5 0.13 M M
4/16/2018 4/17/2018 7:00 AM 2 1.83 M M
4/18/2018 4/26/2018 7:00 AM 9 0.61 M M
4/27/2018 4/28/2018 7:00 AM 2 0.51 M M
4/29/2018 6/02/2018 7:00 AM 35 4.37 M M
6/4/2018 6/05/2018 7:00 AM 2 1.38 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