Station Overview Station Location
Station Number IL-CK-245 Latitude 42.05785
Station Name Arlington Heights 2.6 SSW Longitude -87.992638
County Cook Elevation (ft) 721



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 15 2.97 0.11 10 0.11 10 0.00 0 0 2 0 0.0 0 0
Nov 15 3.04 1.92 6 1.92 6 0.00 0 0 3 0 0.0 0 0
Dec 15 2.26 0.56 4 0.56 4 0.00 0 0 2 0 0.0 0 0
Jan 16 1.74 0.45 10 0.45 10 0.00 0 0 3 1 4.2 2 2
Feb 16 1.68 1.35 4 1.35 4 0.00 0 0 3 0 1.0 1 1
March 16 2.30 1.01 5 1.01 5 0.00 0 0 4 0 0.0 0 0
April 16 3.40 2.29 6 2.29 6 0.00 0 0 6 0 0.0 0 0
May 16 4.02 4.82 19 4.82 19 0.00 0 0 10 3 0.0 0 0
June 16 3.99 5.83 13 5.83 13 0.00 0 0 7 1 0.0 0 0
July 16 3.84 7.61 22 7.61 22 0.00 0 0 9 1 0.0 0 0
Aug 16 4.52 3.83 22 3.83 22 0.00 0 0 11 0 0.0 0 0
Sept 16 3.39 1.62 29 0.70 19 0.92 10 1 4 0 0.0 0 0
Water Year Totals: 37.15" 31.40" 150 days 30.48" 140 0.92" 10 days 1 64 days 6 days 5.2" 3 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
10/1/2015 0.00
10/2/2015
10/3/2015 0.00
10/4/2015
10/5/2015
10/6/2015
10/7/2015 0.00
10/8/2015
10/9/2015 0.09
10/10/2015
10/11/2015 0.00
10/12/2015
10/13/2015 0.00
10/14/2015 0.00
10/15/2015
10/16/2015 0.00
10/17/2015 0.00
10/18/2015
10/19/2015
10/20/2015
10/21/2015
10/22/2015 0.02
10/23/2015
10/24/2015
10/25/2015
10/26/2015
10/27/2015
10/28/2015
10/29/2015
10/30/2015
10/31/2015
11/1/2015
11/2/2015
11/3/2015
11/4/2015
11/5/2015 0.00
11/6/2015 0.11
11/7/2015
11/8/2015
11/9/2015
11/10/2015
11/11/2015
11/12/2015
11/13/2015
11/14/2015
11/15/2015
11/16/2015
11/17/2015
11/18/2015 0.90
11/19/2015
11/20/2015 0.00
11/21/2015
11/22/2015
11/23/2015
11/24/2015
11/25/2015
11/26/2015
11/27/2015 0.91
11/28/2015
11/29/2015 0.00
11/30/2015
12/1/2015
12/2/2015
12/3/2015
12/4/2015
12/5/2015
12/6/2015 0.00
12/7/2015
12/8/2015
12/9/2015
12/10/2015
12/11/2015
12/12/2015
12/13/2015
12/14/2015
12/15/2015
12/16/2015
12/17/2015
12/18/2015
12/19/2015
12/20/2015
12/21/2015
12/22/2015
12/23/2015 0.02
12/24/2015 0.54
12/25/2015 0.00
12/26/2015
12/27/2015
12/28/2015
12/29/2015
12/30/2015
12/31/2015
Day of YearDaily PrcpMultiday Prcp
1/1/2016 0.00
1/2/2016 0.00
1/3/2016 0.00
1/4/2016
1/5/2016
1/6/2016 0.00
1/7/2016
1/8/2016
1/9/2016
1/10/2016 0.27
1/11/2016
1/12/2016 0.08
1/13/2016
1/14/2016
1/15/2016
1/16/2016 0.00
1/17/2016 0.00
1/18/2016
1/19/2016
1/20/2016 0.10
1/21/2016
1/22/2016
1/23/2016
1/24/2016
1/25/2016
1/26/2016
1/27/2016
1/28/2016
1/29/2016
1/30/2016
1/31/2016 T
2/1/2016
2/2/2016
2/3/2016 1.21
2/4/2016
2/5/2016
2/6/2016
2/7/2016
2/8/2016
2/9/2016
2/10/2016
2/11/2016
2/12/2016
2/13/2016
2/14/2016
2/15/2016
2/16/2016
2/17/2016 0.05
2/18/2016
2/19/2016
2/20/2016
2/21/2016
2/22/2016
2/23/2016
2/24/2016 0.00
2/25/2016 0.09
2/26/2016
2/27/2016
2/28/2016
2/29/2016
3/1/2016
3/2/2016
3/3/2016
3/4/2016
3/5/2016 0.04
3/6/2016
3/7/2016
3/8/2016
3/9/2016
3/10/2016
3/11/2016
3/12/2016
3/13/2016
3/14/2016 0.66
3/15/2016
3/16/2016 0.30
3/17/2016 0.01
3/18/2016
3/19/2016 0.00
3/20/2016
3/21/2016
3/22/2016
3/23/2016
3/24/2016
3/25/2016
3/26/2016
3/27/2016
3/28/2016
3/29/2016
3/30/2016
3/31/2016
Day of YearDaily PrcpMultiday Prcp
4/1/2016 0.13
4/2/2016 0.11
4/3/2016
4/4/2016
4/5/2016
4/6/2016
4/7/2016
4/8/2016
4/9/2016
4/10/2016
4/11/2016
4/12/2016
4/13/2016
4/14/2016
4/15/2016
4/16/2016
4/17/2016
4/18/2016
4/19/2016
4/20/2016
4/21/2016 0.51
4/22/2016
4/23/2016
4/24/2016
4/25/2016
4/26/2016 0.20
4/27/2016
4/28/2016 1.32
4/29/2016
4/30/2016 0.02
5/1/2016 0.65
5/2/2016
5/3/2016
5/4/2016 0.39
5/5/2016
5/6/2016
5/7/2016 0.00
5/8/2016 T
5/9/2016
5/10/2016 0.89
5/11/2016 0.49
5/12/2016
5/13/2016 T
5/14/2016 0.67
5/15/2016 T
5/16/2016
5/17/2016 0.05
5/18/2016
5/19/2016 0.00
5/20/2016 0.00
5/21/2016
5/22/2016 0.00
5/23/2016
5/24/2016 0.00
5/25/2016 0.00
5/26/2016 0.92
5/27/2016 0.02
5/28/2016 0.44
5/29/2016 0.30
5/30/2016
5/31/2016
6/1/2016 0.70
6/2/2016 0.20
6/3/2016
6/4/2016
6/5/2016 1.33
6/6/2016 0.04
6/7/2016
6/8/2016 0.00
6/9/2016
6/10/2016 0.50
6/11/2016 0.00
6/12/2016
6/13/2016
6/14/2016 0.00
6/15/2016 0.96
6/16/2016
6/17/2016 0.00
6/18/2016 0.00
6/19/2016
6/20/2016
6/21/2016
6/22/2016 T
6/23/2016 2.10
6/24/2016
6/25/2016
6/26/2016
6/27/2016
6/28/2016
6/29/2016
6/30/2016
Day of YearDaily PrcpMultiday Prcp
7/1/2016
7/2/2016 0.00
7/3/2016 0.00
7/4/2016 0.00
7/5/2016
7/6/2016 1.18
7/7/2016 0.00
7/8/2016 T
7/9/2016 0.00
7/10/2016 0.00
7/11/2016
7/12/2016
7/13/2016
7/14/2016 0.05
7/15/2016 0.00
7/16/2016 0.07
7/17/2016
7/18/2016 0.16
7/19/2016
7/20/2016 0.00
7/21/2016
7/22/2016 1.13
7/23/2016
7/24/2016 2.85
7/25/2016 0.98
7/26/2016 0.00
7/27/2016 0.00
7/28/2016 0.00
7/29/2016 1.12
7/30/2016 0.07
7/31/2016 0.00
8/1/2016 0.00
8/2/2016 0.00
8/3/2016
8/4/2016 0.00
8/5/2016 0.09
8/6/2016 0.00
8/7/2016 0.00
8/8/2016
8/9/2016
8/10/2016
8/11/2016 0.00
8/12/2016 0.00
8/13/2016 0.17
8/14/2016 0.00
8/15/2016
8/16/2016 0.07
8/17/2016 0.00
8/18/2016 0.82
8/19/2016 0.27
8/20/2016 0.05
8/21/2016 0.52
8/22/2016
8/23/2016 0.00
8/24/2016
8/25/2016 0.35
8/26/2016
8/27/2016 0.99
8/28/2016 0.02
8/29/2016
8/30/2016 0.48
8/31/2016 0.00
9/1/2016 0.00
9/2/2016 0.00
9/3/2016 0.00
9/4/2016 **
9/5/2016 **
9/6/2016 **
9/7/2016 **
9/8/2016 **
9/9/2016 **
9/10/2016 0.92
9/11/2016 0.00
9/12/2016 0.00
9/13/2016 0.00
9/14/2016 0.12
9/15/2016 0.00
9/16/2016 0.00
9/17/2016 0.03
9/18/2016 0.00
9/19/2016
9/20/2016 0.00
9/21/2016 0.00
9/22/2016 0.54
9/23/2016 0.01
9/24/2016 0.00
9/25/2016 0.00
9/26/2016 0.00
9/27/2016 0.00
9/28/2016 **
9/29/2016 **
9/30/2016 **



Observation Date Observation Time Precipitation Snowfall Snowfall SWE Snow Depth Snow SWE Notes
10/1/2015 7:00 AM 0.00 M M M M Sent via CoCoRaHS Observer for iOS
10/3/2015 7:00 AM 0.00 M M M M Sent via CoCoRaHS Observer for iOS
10/7/2015 7:00 AM 0.00 M M M M Sent via CoCoRaHS Observer for iOS
10/9/2015 7:00 AM 0.09 M M M M Sent via CoCoRaHS Observer for iOS
10/11/2015 7:00 AM 0.00 M M M M Sent via CoCoRaHS Observer for iOS
10/13/2015 7:00 AM 0.00 M M M M Sent via CoCoRaHS Observer for iOS
10/14/2015 7:00 AM 0.00 M M M M Sent via CoCoRaHS Observer for iOS
10/16/2015 7:00 AM 0.00 M M M M Sent via CoCoRaHS Observer for iOS
10/17/2015 7:00 AM 0.00 M M M M Sent via CoCoRaHS Observer for iOS
10/22/2015 7:00 AM 0.02 M M M M Sent via CoCoRaHS Observer for iOS
11/5/2015 7:00 AM 0.00 M M M M Sent via CoCoRaHS Observer for iOS
11/6/2015 7:00 PM 0.11 M M M M
11/18/2015 9:20 PM 0.90 M M M M Sent via CoCoRaHS Observer for iOS
11/20/2015 7:00 AM 0.00 M M M M Sent via CoCoRaHS Observer for iOS
11/27/2015 7:00 AM 0.91 M M M M Sent via CoCoRaHS Observer for iOS
11/29/2015 7:00 AM 0.00 0.0 M M M
12/6/2015 7:00 AM 0.00 M M M M Sent via CoCoRaHS Observer for iOS
12/23/2015 7:00 AM 0.02 M M M M
12/24/2015 7:00 AM 0.54 M M M M
12/25/2015 7:00 AM 0.00 0.0 M M M
1/1/2016 7:00 AM 0.00 0.0 M M M
1/2/2016 7:00 AM 0.00 0.0 M M M
1/3/2016 7:00 AM 0.00 M M M M Sent via CoCoRaHS Observer for iOS
1/6/2016 7:00 AM 0.00 0.0 M M M
1/10/2016 7:00 AM 0.27 M M M M Sent via CoCoRaHS Observer for iOS
1/12/2016 7:00 AM 0.08 3.1 M 5.0 M
1/16/2016 7:00 AM 0.00 M M M M Sent via CoCoRaHS Observer for iOS
1/17/2016 7:00 AM 0.00 M M M M Sent via CoCoRaHS Observer for iOS
1/20/2016 9:00 AM 0.10 1.1 0.10 2.0 0.20
1/31/2016 9:00 AM T M M M M Sent via CoCoRaHS Observer for iOS
2/3/2016 9:00 AM 1.21 M M M M
2/17/2016 7:00 AM 0.05 1.0 M 2.0 M
2/24/2016 7:00 AM 0.00 0.0 M M M
2/25/2016 9:00 AM 0.09 M M M M
3/5/2016 12:00 PM 0.04 M M M M
3/14/2016 7:00 AM 0.66 M M M M
3/16/2016 7:00 AM 0.30 M M M M
3/17/2016 7:00 PM 0.01 M M M M
3/19/2016 7:00 AM 0.00 0.0 M M M
4/1/2016 7:00 AM 0.13 M M M M Sent via CoCoRaHS Observer for iOS
4/2/2016 7:00 AM 0.11 M M M M
4/21/2016 7:00 AM 0.51 M M M M Sent via CoCoRaHS Observer for iOS
4/26/2016 6:34 AM 0.20 M M M M Sent via CoCoRaHS Observer for iOS
4/28/2016 7:00 AM 1.32 M M M M Sent via CoCoRaHS Observer for iOS
4/30/2016 7:00 AM 0.02 M M M M Sent via CoCoRaHS Observer for iOS
5/1/2016 7:00 AM 0.65 M M M M Sent via CoCoRaHS Observer for iOS
5/4/2016 6:54 AM 0.39 M M M M Sent via CoCoRaHS Observer for iOS
5/7/2016 7:00 AM 0.00 0.0 M M M
5/8/2016 7:00 AM T M M M M Sent via CoCoRaHS Observer for iOS
5/10/2016 7:00 AM 0.89 M M M M Sent via CoCoRaHS Observer for iOS
5/11/2016 7:00 AM 0.49 M M M M Sent via CoCoRaHS Observer for iOS
5/13/2016 7:00 AM T M M M M Sent via CoCoRaHS Observer for iOS
5/14/2016 7:00 AM 0.67 M M M M Sent via CoCoRaHS Observer for iOS
5/15/2016 7:00 AM T M M M M
5/17/2016 7:15 AM 0.05 M M M M
5/19/2016 7:00 AM 0.00 0.0 M M M
5/20/2016 7:00 AM 0.00 0.0 M M M
5/22/2016 7:00 AM 0.00 0.0 M M M
5/24/2016 7:00 AM 0.00 0.0 M M M
5/25/2016 7:00 AM 0.00 0.0 M M M
5/26/2016 6:00 AM 0.92 M M M M
5/27/2016 7:00 AM 0.02 M M M M Sent via CoCoRaHS Observer for iOS
5/28/2016 7:00 AM 0.44 M M M M
5/29/2016 7:00 AM 0.30 M M M M Sent via CoCoRaHS Observer for iOS
6/1/2016 7:00 AM 0.70 M M M M
6/2/2016 5:40 PM 0.20 M M M M
6/5/2016 7:00 AM 1.33 M M M M Heavy downpour for over an hour.
6/6/2016 7:00 AM 0.04 M M M M
6/8/2016 7:00 AM 0.00 0.0 M M M
6/10/2016 6:15 AM 0.50 M M M M Sent via CoCoRaHS Observer for iOS
6/11/2016 7:00 AM 0.00 0.0 M M M
6/14/2016 7:00 AM 0.00 0.0 M M M
6/15/2016 7:00 AM 0.96 M M M M
6/17/2016 7:00 AM 0.00 0.0 M M M
6/18/2016 7:00 AM 0.00 M M M M Sent via CoCoRaHS Observer for iOS
6/22/2016 7:00 AM T M M M M Sent via CoCoRaHS Observer for iOS
6/23/2016 7:00 AM 2.10 M M M M Heavy rain, about 4.20 inches per hour rate.
7/2/2016 7:00 AM 0.00 0.0 M M M
7/3/2016 6:30 AM 0.00 0.0 M M M
7/4/2016 7:00 AM 0.00 0.0 M M M
7/6/2016 7:00 AM 1.18 M M M M Sent via CoCoRaHS Observer for iOS
7/7/2016 7:00 AM 0.00 M M M M Sent via CoCoRaHS Observer for iOS
7/8/2016 7:00 AM T M M M M Sent via CoCoRaHS Observer for iOS
7/9/2016 7:00 AM 0.00 0.0 M M M
7/10/2016 7:00 AM 0.00 0.0 M M M
7/14/2016 7:00 AM 0.05 M M M M
7/15/2016 7:00 AM 0.00 0.0 M M M
7/16/2016 7:00 AM 0.07 M M M M
7/18/2016 5:40 AM 0.16 M M M M Sent via CoCoRaHS Observer for iOS
7/20/2016 7:00 AM 0.00 0.0 M M M
7/22/2016 7:00 AM 1.13 M M M M Sent via CoCoRaHS Observer for iOS
7/24/2016 7:00 AM 2.85 M M M M Sent via CoCoRaHS Observer for iOS
7/25/2016 7:00 AM 0.98 M M M M Sent via CoCoRaHS Observer for iOS
7/26/2016 7:00 AM 0.00 M M M M Sent via CoCoRaHS Observer for iOS
7/27/2016 7:00 AM 0.00 M M M M Sent via CoCoRaHS Observer for iOS
7/28/2016 7:00 AM 0.00 0.0 M M M
7/29/2016 7:00 AM 1.12 M M M M
7/30/2016 7:00 AM 0.07 M M M M
7/31/2016 7:00 AM 0.00 0.0 M M M
8/1/2016 7:00 AM 0.00 0.0 M M M
8/2/2016 7:00 AM 0.00 0.0 M M M
8/4/2016 6:25 AM 0.00 0.0 M M M
8/5/2016 7:00 AM 0.09 M M M M Sent via CoCoRaHS Observer for iOS
8/6/2016 7:00 AM 0.00 0.0 M M M
8/7/2016 7:00 AM 0.00 0.0 M M M
8/11/2016 7:00 AM 0.00 0.0 M M M
8/12/2016 7:00 AM 0.00 M M M M Sent via CoCoRaHS Observer for iOS
8/13/2016 7:00 AM 0.17 M M M M Sent via CoCoRaHS Observer for iOS
8/14/2016 7:00 AM 0.00 0.0 M M M
8/16/2016 7:00 AM 0.07 M M M M Sent via CoCoRaHS Observer for iOS
8/17/2016 7:00 AM 0.00 M M M M Sent via CoCoRaHS Observer for iOS
8/18/2016 5:35 PM 0.82 M M M M Sent via CoCoRaHS Observer for iOS
8/19/2016 6:30 PM 0.27 M M M M Sent via CoCoRaHS Observer for iOS
8/20/2016 7:00 AM 0.05 M M M M
8/21/2016 7:00 AM 0.52 M M M M
8/23/2016 7:00 AM 0.00 M M M M Sent via CoCoRaHS Observer for iOS
8/25/2016 7:00 AM 0.35 M M M M Sent via CoCoRaHS Observer for iOS
8/27/2016 7:00 AM 0.99 M M M M
8/28/2016 7:00 AM 0.02 M M M M Sent via CoCoRaHS Observer for iOS
8/30/2016 7:00 AM 0.48 M M M M Sent via CoCoRaHS Observer for iOS
8/31/2016 7:00 AM 0.00 0.0 M M M
9/1/2016 7:00 AM 0.00 0.0 M M M
9/2/2016 7:00 AM 0.00 M M M M Sent via CoCoRaHS Observer for iOS
9/3/2016 7:00 AM 0.00 0.0 M M M
9/11/2016 7:00 AM 0.00 0.0 M M M
9/12/2016 7:00 AM 0.00 M M M M Sent via CoCoRaHS Observer for iOS
9/13/2016 7:00 AM 0.00 M M M M Sent via CoCoRaHS Observer for iOS
9/14/2016 8:00 AM 0.12 M M M M Sent via CoCoRaHS Observer for iOS
9/15/2016 7:00 AM 0.00 0.0 M M M
9/16/2016 7:00 AM 0.00 0.0 M M M
9/17/2016 7:00 AM 0.03 M M M M Sent via CoCoRaHS Observer for iOS
9/18/2016 7:00 AM 0.00 M M M M Sent via CoCoRaHS Observer for iOS
9/20/2016 7:00 AM 0.00 0.0 M M M
9/21/2016 7:00 AM 0.00 0.0 M M M
9/22/2016 7:00 AM 0.54 M M M M
9/23/2016 7:00 AM 0.01 M M M M
9/24/2016 7:00 AM 0.00 0.0 M M M
9/25/2016 7:00 AM 0.00 0.0 M M M
9/26/2016 7:00 AM 0.00 0.0 M M M
9/27/2016 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
9/4/2016 9/10/2016 7:00 AM 7 0.92 M M
9/28/2016 10/08/2016 7:00 AM 11 1.88 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