Station Overview Station Location
Station Number IL-CK-97 Latitude 41.93012
Station Name Chicago 6.8 NNE Longitude -87.639295
County Cook Elevation (ft) 591



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 11 3.22 2.31 31 0.57 19 1.74 12 1 6 0 0.0 0 0
Nov 11 3.03 3.51 30 3.51 30 0.00 0 0 9 5 0.0 0 0
Dec 11 2.31 1.50 31 1.50 31 0.00 0 0 14 1 0.0 0 0
Jan 12 1.87 1.71 31 1.71 31 0.00 0 0 6 8 0.0 0 0
Feb 12 1.79 1.37 29 1.37 29 0.00 0 0 6 4 0.0 0 0
March 12 2.36 0.16 8 0.16 8 0.00 0 0 3 2 0.0 0 0
April 12 3.52 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
May 12 3.89 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
June 12 4.12 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
July 12 3.89 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
Aug 12 4.17 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
Sept 12 3.22 0.00 0 0.00 0 0.00 0 0 0 0 0.0 0 0
Water Year Totals: 37.39" 10.56" 160 days 8.82" 148 1.74" 12 days 1 44 days 20 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
10/1/2011 0.07
10/2/2011 0.00
10/3/2011 0.00
10/4/2011 0.00
10/5/2011 0.00
10/6/2011 0.00
10/7/2011 0.00
10/8/2011 0.00
10/9/2011 0.00
10/10/2011 **
10/11/2011 **
10/12/2011 **
10/13/2011 **
10/14/2011 **
10/15/2011 **
10/16/2011 **
10/17/2011 **
10/18/2011 **
10/19/2011 **
10/20/2011 **
10/21/2011 1.74
10/22/2011 0.00
10/23/2011 0.00
10/24/2011 0.11
10/25/2011 0.00
10/26/2011 0.04
10/27/2011 0.11
10/28/2011 0.21
10/29/2011 0.00
10/30/2011 0.00
10/31/2011 0.03
11/1/2011 0.00
11/2/2011 0.00
11/3/2011 0.01
11/4/2011 0.39
11/5/2011 0.00
11/6/2011 0.00
11/7/2011 0.03
11/8/2011 0.65
11/9/2011 1.19
11/10/2011 T
11/11/2011 T
11/12/2011 0.00
11/13/2011 0.00
11/14/2011 0.00
11/15/2011 T
11/16/2011 0.00
11/17/2011 0.00
11/18/2011 0.00
11/19/2011 0.00
11/20/2011 T
11/21/2011 0.00
11/22/2011 0.04
11/23/2011 0.34
11/24/2011 0.00
11/25/2011 0.00
11/26/2011 0.00
11/27/2011 0.85
11/28/2011 0.01
11/29/2011 T
11/30/2011 0.00
12/1/2011 0.00
12/2/2011 0.02
12/3/2011 0.03
12/4/2011 0.01
12/5/2011 0.00
12/6/2011 0.01
12/7/2011 T
12/8/2011 0.00
12/9/2011 0.01
12/10/2011 0.00
12/11/2011 0.00
12/12/2011 0.00
12/13/2011 0.00
12/14/2011 0.62
12/15/2011 0.07
12/16/2011 0.00
12/17/2011 0.05
12/18/2011 0.00
12/19/2011 0.00
12/20/2011 0.00
12/21/2011 0.02
12/22/2011 0.00
12/23/2011 0.07
12/24/2011 0.00
12/25/2011 0.00
12/26/2011 0.00
12/27/2011 0.13
12/28/2011 0.00
12/29/2011 0.01
12/30/2011 0.22
12/31/2011 0.23
Day of YearDaily PrcpMultiday Prcp
1/1/2012 T
1/2/2012 T
1/3/2012 0.00
1/4/2012 0.00
1/5/2012 0.00
1/6/2012 0.00
1/7/2012 0.00
1/8/2012 0.00
1/9/2012 T
1/10/2012 0.00
1/11/2012 0.00
1/12/2012 0.00
1/13/2012 0.18
1/14/2012 T
1/15/2012 0.00
1/16/2012 0.00
1/17/2012 0.20
1/18/2012 0.03
1/19/2012 T
1/20/2012 0.00
1/21/2012 0.66
1/22/2012 0.00
1/23/2012 0.63
1/24/2012 T
1/25/2012 0.00
1/26/2012 0.00
1/27/2012 T
1/28/2012 0.01
1/29/2012 T
1/30/2012 0.00
1/31/2012 0.00
2/1/2012 T
2/2/2012 0.00
2/3/2012 0.00
2/4/2012 0.00
2/5/2012 0.00
2/6/2012 0.00
2/7/2012 0.00
2/8/2012 0.00
2/9/2012 0.00
2/10/2012 0.00
2/11/2012 0.13
2/12/2012 0.00
2/13/2012 0.00
2/14/2012 0.01
2/15/2012 0.00
2/16/2012 0.11
2/17/2012 0.00
2/18/2012 0.00
2/19/2012 0.00
2/20/2012 0.00
2/21/2012 0.04
2/22/2012 T
2/23/2012 T
2/24/2012 0.72
2/25/2012 T
2/26/2012 0.00
2/27/2012 0.00
2/28/2012 0.00
2/29/2012 0.36
3/1/2012 T
3/2/2012 0.00
3/3/2012 0.13
3/4/2012 T
3/5/2012 0.01
3/6/2012 0.00
3/7/2012 0.00
3/8/2012 0.02
3/9/2012
3/10/2012
3/11/2012
3/12/2012
3/13/2012
3/14/2012
3/15/2012
3/16/2012
3/17/2012
3/18/2012
3/19/2012
3/20/2012
3/21/2012
3/22/2012
3/23/2012
3/24/2012
3/25/2012
3/26/2012
3/27/2012
3/28/2012
3/29/2012
3/30/2012
3/31/2012
Day of YearDaily PrcpMultiday Prcp
4/1/2012
4/2/2012
4/3/2012
4/4/2012
4/5/2012
4/6/2012
4/7/2012
4/8/2012
4/9/2012
4/10/2012
4/11/2012
4/12/2012
4/13/2012
4/14/2012
4/15/2012
4/16/2012
4/17/2012
4/18/2012
4/19/2012
4/20/2012
4/21/2012
4/22/2012
4/23/2012
4/24/2012
4/25/2012
4/26/2012
4/27/2012
4/28/2012
4/29/2012
4/30/2012
5/1/2012
5/2/2012
5/3/2012
5/4/2012
5/5/2012
5/6/2012
5/7/2012
5/8/2012
5/9/2012
5/10/2012
5/11/2012
5/12/2012
5/13/2012
5/14/2012
5/15/2012
5/16/2012
5/17/2012
5/18/2012
5/19/2012
5/20/2012
5/21/2012
5/22/2012
5/23/2012
5/24/2012
5/25/2012
5/26/2012
5/27/2012
5/28/2012
5/29/2012
5/30/2012
5/31/2012
6/1/2012
6/2/2012
6/3/2012
6/4/2012
6/5/2012
6/6/2012
6/7/2012
6/8/2012
6/9/2012
6/10/2012
6/11/2012
6/12/2012
6/13/2012
6/14/2012
6/15/2012
6/16/2012
6/17/2012
6/18/2012
6/19/2012
6/20/2012
6/21/2012
6/22/2012
6/23/2012
6/24/2012
6/25/2012
6/26/2012
6/27/2012
6/28/2012
6/29/2012
6/30/2012
Day of YearDaily PrcpMultiday Prcp
7/1/2012
7/2/2012
7/3/2012
7/4/2012
7/5/2012
7/6/2012
7/7/2012
7/8/2012
7/9/2012
7/10/2012
7/11/2012
7/12/2012
7/13/2012
7/14/2012
7/15/2012
7/16/2012
7/17/2012
7/18/2012
7/19/2012
7/20/2012
7/21/2012
7/22/2012
7/23/2012
7/24/2012
7/25/2012
7/26/2012
7/27/2012
7/28/2012
7/29/2012
7/30/2012
7/31/2012
8/1/2012
8/2/2012
8/3/2012
8/4/2012
8/5/2012
8/6/2012
8/7/2012
8/8/2012
8/9/2012
8/10/2012
8/11/2012
8/12/2012
8/13/2012
8/14/2012
8/15/2012
8/16/2012
8/17/2012
8/18/2012
8/19/2012
8/20/2012
8/21/2012
8/22/2012
8/23/2012
8/24/2012
8/25/2012
8/26/2012
8/27/2012
8/28/2012
8/29/2012
8/30/2012
8/31/2012
9/1/2012
9/2/2012
9/3/2012
9/4/2012
9/5/2012
9/6/2012
9/7/2012
9/8/2012
9/9/2012
9/10/2012
9/11/2012
9/12/2012
9/13/2012
9/14/2012
9/15/2012
9/16/2012
9/17/2012
9/18/2012
9/19/2012
9/20/2012
9/21/2012
9/22/2012
9/23/2012
9/24/2012
9/25/2012
9/26/2012
9/27/2012
9/28/2012
9/29/2012
9/30/2012



Observation Date Observation Time Precipitation Snowfall Snowfall SWE Snow Depth Snow SWE Notes
10/1/2011 10:00 AM 0.07 M M M M Showers
10/2/2011 10:00 AM 0.00 0.0 M M M
10/3/2011 9:00 AM 0.00 0.0 M M M
10/4/2011 10:00 AM 0.00 0.0 M M M
10/5/2011 10:00 AM 0.00 0.0 M M M
10/6/2011 10:00 AM 0.00 0.0 M M M
10/7/2011 9:00 AM 0.00 0.0 M M M
10/8/2011 10:00 AM 0.00 0.0 M M M
10/9/2011 8:00 AM 0.00 0.0 M M M
10/22/2011 10:00 AM 0.00 0.0 M M M
10/23/2011 7:30 AM 0.00 0.0 M M M
10/24/2011 9:30 AM 0.11 M M M M Early morning showers.
10/25/2011 10:00 AM 0.00 0.0 M M M
10/26/2011 9:30 AM 0.04 M M M M Distant lightning and thunder.
10/27/2011 9:15 AM 0.11 M M M M Rain showers
10/28/2011 10:00 AM 0.21 M M M M Showers
10/29/2011 9:00 AM 0.00 0.0 M M M
10/30/2011 10:00 AM 0.00 0.0 M M M
10/31/2011 10:00 AM 0.03 M M M M
11/1/2011 10:00 AM 0.00 0.0 M M M
11/2/2011 10:00 AM 0.00 0.0 M M M
11/3/2011 9:30 AM 0.01 M M M M
11/4/2011 10:00 AM 0.39 M M M M Sporadic showers with high winds.
11/5/2011 10:00 AM 0.00 0.0 M M M
11/6/2011 10:00 AM 0.00 0.0 M M M
11/7/2011 8:00 AM 0.03 M M M M
11/8/2011 8:50 AM 0.65 M M M M
11/9/2011 8:45 AM 1.19 M M M M Intermittant showers.
11/10/2011 10:00 AM T M M M M Was surprised to find no accumulation in the gauge since I saw it rain yesterday. High winds may have caused the light rain to blow past the gauge.
11/11/2011 10:00 AM T T M M M Snow flurries
11/12/2011 10:00 AM 0.00 0.0 M M M
11/13/2011 8:30 AM 0.00 0.0 M M M
11/14/2011 9:00 AM 0.00 0.0 M M M
11/15/2011 10:00 AM T M M M M Did not actually see the rain, but the ground was wet when I went outside.
11/16/2011 9:00 AM 0.00 0.0 M M M
11/17/2011 10:00 AM 0.00 0.0 M M M
11/18/2011 10:00 AM 0.00 0.0 M M M
11/19/2011 10:00 AM 0.00 0.0 M M M
11/20/2011 10:00 AM T M M M M
11/21/2011 9:00 AM 0.00 0.0 M M M
11/22/2011 9:45 AM 0.04 M M M M
11/23/2011 10:00 AM 0.34 M M M M
11/24/2011 9:30 AM 0.00 0.0 M M M
11/25/2011 9:30 AM 0.00 0.0 M M M
11/26/2011 10:00 AM 0.00 0.0 M M M
11/27/2011 10:00 AM 0.85 M M M M
11/28/2011 10:00 AM 0.01 M M M M Drizzle
11/29/2011 8:30 AM T M M M M
11/30/2011 8:00 AM 0.00 0.0 M M M
12/1/2011 10:00 AM 0.00 0.0 M M M
12/2/2011 10:00 AM 0.02 M M M M
12/3/2011 10:00 AM 0.03 M M M M
12/4/2011 9:30 AM 0.01 M M M M
12/5/2011 9:00 AM 0.00 0.0 M M M
12/6/2011 9:00 AM 0.01 M M M M
12/7/2011 10:00 AM T T M M M Observed snow flurries around 2:00 PM.
12/8/2011 10:00 AM 0.00 0.0 M M M
12/9/2011 10:00 AM 0.01 T M M M Light snow cover.
12/10/2011 10:00 AM 0.00 0.0 M M M
12/11/2011 9:30 AM 0.00 0.0 M M M
12/12/2011 10:00 AM 0.00 0.0 M M M
12/13/2011 10:00 AM 0.00 0.0 M M M
12/14/2011 10:00 AM 0.62 M M M M
12/15/2011 10:00 AM 0.07 M M M M
12/16/2011 10:00 AM 0.00 0.0 M M M
12/17/2011 10:00 AM 0.05 T M M M Approx. 1/2 inch of new snow.
12/18/2011 9:30 AM 0.00 0.0 M M M Light fog.
12/19/2011 8:30 AM 0.00 0.0 M M M
12/20/2011 9:00 AM 0.00 0.0 M M M
12/21/2011 9:30 AM 0.02 M M M M
12/22/2011 8:30 AM 0.00 0.0 M M M
12/23/2011 10:00 AM 0.07 M M M M
12/24/2011 9:00 AM 0.00 0.0 M M M
12/25/2011 10:00 AM 0.00 0.0 M M M
12/26/2011 9:00 AM 0.00 0.0 M M M
12/27/2011 9:30 AM 0.13 M M M M
12/28/2011 9:00 AM 0.00 0.0 M M M
12/29/2011 10:00 AM 0.01 M M M M
12/30/2011 8:55 AM 0.22 M M M M
12/31/2011 10:00 AM 0.23 M M M M
1/1/2012 10:00 AM T M M M M This is a good estimate. High winds prevented me from getting to the gauge.
1/2/2012 10:00 AM T T M M M Light snow.
1/3/2012 10:00 AM 0.00 0.0 M M M
1/4/2012 10:00 AM 0.00 0.0 M M M
1/5/2012 9:00 AM 0.00 0.0 M M M
1/6/2012 10:00 AM 0.00 0.0 M M M
1/7/2012 10:00 AM 0.00 0.0 M M M
1/8/2012 10:00 AM 0.00 0.0 M M M
1/9/2012 10:00 AM T M M M M Saw patches of wet pavement.
1/10/2012 10:00 AM 0.00 0.0 M M M
1/11/2012 10:00 AM 0.00 0.0 M M M
1/12/2012 9:30 AM 0.00 0.0 M M M
1/13/2012 8:45 AM 0.18 M M M M High winds off Lake Michigan blew much snow over the gauge. Total snow depth is about 3-4 inches, estimated.
1/14/2012 10:00 AM T T M M M Snow flurries
1/15/2012 10:00 AM 0.00 0.0 M M M
1/16/2012 9:30 AM 0.00 0.0 M M M
1/17/2012 10:00 AM 0.20 M M M M Precipitation is mostly rain, but it's beginning to freeze on the gauge and other objects.
1/18/2012 10:00 AM 0.03 M M M M Snow
1/19/2012 9:00 AM T M M M M Snow flurries.
1/20/2012 9:00 AM 0.00 0.0 M M M
1/21/2012 10:00 AM 0.66 M M M M Approximately 7-8 inches of snow.
1/22/2012 10:00 AM 0.00 0.0 M M M Foggy conditions.
1/23/2012 7:15 AM 0.63 M M M M Rain and thunderstorms.
1/24/2012 9:00 AM T M M M M
1/25/2012 10:00 AM 0.00 0.0 M M M
1/26/2012 10:00 AM 0.00 0.0 M M M
1/27/2012 10:00 AM T M M M M Light sprinkles
1/28/2012 10:00 AM 0.01 M M M M Light snow
1/29/2012 10:00 AM T M M M M Snow flurries.
1/30/2012 10:00 AM 0.00 0.0 M M M
1/31/2012 10:00 AM 0.00 0.0 M M M
2/1/2012 10:00 AM T M M M M
2/2/2012 9:00 AM 0.00 0.0 M M M
2/3/2012 10:00 AM 0.00 0.0 M M M
2/4/2012 10:00 AM 0.00 0.0 M M M
2/5/2012 10:00 AM 0.00 0.0 M M M
2/6/2012 10:00 AM 0.00 0.0 M M M
2/7/2012 10:00 AM 0.00 0.0 M M M
2/8/2012 10:00 AM 0.00 0.0 M M M
2/9/2012 10:00 AM 0.00 0.0 M M M
2/10/2012 8:00 AM 0.00 0.0 M M M
2/11/2012 10:00 AM 0.13 M M M M Snow
2/12/2012 10:00 AM 0.00 0.0 M M M
2/13/2012 9:30 AM 0.00 0.0 M M M
2/14/2012 10:00 AM 0.01 M M M M Snow
2/15/2012 10:00 AM 0.00 0.0 M M M
2/16/2012 10:00 AM 0.11 M M M M Light rain.
2/17/2012 10:00 AM 0.00 0.0 M M M
2/18/2012 10:00 AM 0.00 0.0 M M M
2/19/2012 9:00 AM 0.00 0.0 M M M
2/20/2012 10:00 AM 0.00 0.0 M M M
2/21/2012 10:00 AM 0.04 M M M M Rain
2/22/2012 10:00 AM T M M M M
2/23/2012 10:00 AM T M M M M Sprinkles
2/24/2012 10:00 AM 0.72 M M M M Rain changing to snow. Approx 3"-4" accumulation.
2/25/2012 10:00 AM T M M M M Flurries
2/26/2012 10:00 AM 0.00 0.0 M M M
2/27/2012 10:00 AM 0.00 0.0 M M M
2/28/2012 10:00 AM 0.00 0.0 M M M
2/29/2012 10:00 AM 0.36 M M M M
3/1/2012 10:00 AM T M M M M
3/2/2012 10:00 AM 0.00 0.0 M M M
3/3/2012 10:00 AM 0.13 M M M M Rain, rain and snow mixture, snow and possbily some sleet, some lightning and thunder.
3/4/2012 9:00 AM T M M M M Snow flurries.
3/5/2012 8:30 AM 0.01 M M M M Light snow.
3/6/2012 10:00 AM 0.00 0.0 M M M
3/7/2012 10:00 AM 0.00 0.0 M M M
3/8/2012 10:00 AM 0.02 M M M M



Start Date End Date & Time Duration in Days Precipitation Snow Depth Snow Depth SWE Notes
10/10/2011 10/21/2011 10:00 AM 12 1.74 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