Station Overview Station Location
Station Number IL-CK-152 Latitude 41.701767
Station Name Chicago Ridge 0.2 WSW Longitude -87.781987
County Cook Elevation (ft) 596



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 10 3.06 2.41 31 2.41 31 0.00 0 0 7 1 0.0 0 0
Nov 10 3.36 2.16 30 2.11 26 0.05 4 2 8 2 0.0 0 0
Dec 10 2.47 2.34 31 2.34 31 0.00 0 0 12 6 11.7 10 27
Jan 11 2.01 1.42 31 1.42 31 0.00 0 0 9 13 5.7 7 22
Feb 11 1.84 3.96 28 3.96 28 0.00 0 0 13 5 22.3 8 21
March 11 2.47 2.82 31 2.82 31 0.00 0 0 8 2 0.6 2 2
April 11 3.66 6.60 30 6.60 30 0.00 0 0 17 3 0.0 0 0
May 11 4.15 5.33 31 5.33 31 0.00 0 0 17 1 0.0 0 0
June 11 4.25 7.42 30 7.42 28 0.00 2 1 15 1 0.0 0 0
July 11 3.99 5.16 31 5.16 27 0.00 4 2 10 1 0.0 0 0
Aug 11 4.35 3.50 31 3.15 27 0.35 4 2 9 0 0.0 0 0
Sept 11 3.29 4.43 30 3.75 26 0.68 4 2 12 0 0.0 0 0
Water Year Totals: 38.90" 47.55" 365 days 46.47" 347 1.08" 18 days 9 137 days 35 days 40.3" 27 days 72 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
10/1/2010 0.00
10/2/2010 0.13
10/3/2010 0.07
10/4/2010 T
10/5/2010 0.00
10/6/2010 0.00
10/7/2010 0.00
10/8/2010 0.00
10/9/2010 0.00
10/10/2010 0.00
10/11/2010 0.00
10/12/2010 0.00
10/13/2010 0.00
10/14/2010 0.29
10/15/2010 0.00
10/16/2010 0.00
10/17/2010 0.00
10/18/2010 0.00
10/19/2010 0.00
10/20/2010 0.00
10/21/2010 0.00
10/22/2010 0.00
10/23/2010 0.00
10/24/2010 0.25
10/25/2010 1.11
10/26/2010 0.03
10/27/2010 0.53
10/28/2010 0.00
10/29/2010 0.00
10/30/2010 0.00
10/31/2010 0.00
11/1/2010 0.00
11/2/2010 0.00
11/3/2010 0.00
11/4/2010 0.02
11/5/2010 0.02
11/6/2010 0.00
11/7/2010 **
11/8/2010 0.00
11/9/2010 0.00
11/10/2010 0.00
11/11/2010 0.00
11/12/2010 0.04
11/13/2010 **
11/14/2010 0.05
11/15/2010 0.09
11/16/2010 0.00
11/17/2010 T
11/18/2010 T
11/19/2010 0.00
11/20/2010 0.00
11/21/2010 0.00
11/22/2010 0.01
11/23/2010 0.85
11/24/2010 0.00
11/25/2010 0.40
11/26/2010 0.00
11/27/2010 0.00
11/28/2010 0.00
11/29/2010 0.00
11/30/2010 0.68
12/1/2010 T
12/2/2010 T
12/3/2010 0.00
12/4/2010 0.21
12/5/2010 0.14
12/6/2010 0.00
12/7/2010 T
12/8/2010 0.00
12/9/2010 0.00
12/10/2010 0.10
12/11/2010 0.00
12/12/2010 0.57
12/13/2010 0.15
12/14/2010 T
12/15/2010 0.00
12/16/2010 0.00
12/17/2010 0.02
12/18/2010 0.00
12/19/2010 0.00
12/20/2010 0.00
12/21/2010 0.29
12/22/2010 T
12/23/2010 T
12/24/2010 0.00
12/25/2010 0.50
12/26/2010 0.13
12/27/2010 0.01
12/28/2010 0.00
12/29/2010 0.00
12/30/2010 0.04
12/31/2010 0.18
Day of YearDaily PrcpMultiday Prcp
1/1/2011 0.80
1/2/2011 0.00
1/3/2011 0.00
1/4/2011 0.00
1/5/2011 0.00
1/6/2011 T
1/7/2011 T
1/8/2011 0.02
1/9/2011 0.00
1/10/2011 0.00
1/11/2011 0.02
1/12/2011 0.18
1/13/2011 T
1/14/2011 T
1/15/2011 T
1/16/2011 0.00
1/17/2011 T
1/18/2011 0.25
1/19/2011 0.02
1/20/2011 T
1/21/2011 0.00
1/22/2011 0.01
1/23/2011 T
1/24/2011 0.05
1/25/2011 T
1/26/2011 T
1/27/2011 T
1/28/2011 0.07
1/29/2011 0.00
1/30/2011 T
1/31/2011 T
2/1/2011 0.08
2/2/2011 1.69
2/3/2011 0.12
2/4/2011 0.00
2/5/2011 0.00
2/6/2011 0.06
2/7/2011 T
2/8/2011 0.13
2/9/2011 T
2/10/2011 0.00
2/11/2011 0.00
2/12/2011 T
2/13/2011 0.00
2/14/2011 0.00
2/15/2011 0.00
2/16/2011 0.02
2/17/2011 0.00
2/18/2011 0.00
2/19/2011 0.00
2/20/2011 T
2/21/2011 0.90
2/22/2011 0.05
2/23/2011 T
2/24/2011 0.07
2/25/2011 0.05
2/26/2011 0.09
2/27/2011 0.04
2/28/2011 0.66
3/1/2011 0.00
3/2/2011 0.00
3/3/2011 0.00
3/4/2011 T
3/5/2011 1.05
3/6/2011 0.06
3/7/2011 0.00
3/8/2011 0.00
3/9/2011 0.40
3/10/2011 0.08
3/11/2011 T
3/12/2011 0.00
3/13/2011 0.00
3/14/2011 0.00
3/15/2011 0.00
3/16/2011 0.00
3/17/2011 0.00
3/18/2011 0.00
3/19/2011 0.00
3/20/2011 0.00
3/21/2011 0.56
3/22/2011 0.55
3/23/2011 0.11
3/24/2011 0.01
3/25/2011 0.00
3/26/2011 0.00
3/27/2011 0.00
3/28/2011 0.00
3/29/2011 0.00
3/30/2011 0.00
3/31/2011 0.00
Day of YearDaily PrcpMultiday Prcp
4/1/2011 0.00
4/2/2011 0.15
4/3/2011 0.00
4/4/2011 0.18
4/5/2011 T
4/6/2011 0.00
4/7/2011 T
4/8/2011 0.93
4/9/2011 0.02
4/10/2011 0.00
4/11/2011 0.19
4/12/2011 0.00
4/13/2011 0.00
4/14/2011 0.00
4/15/2011 0.00
4/16/2011 0.31
4/17/2011 0.14
4/18/2011 0.49
4/19/2011 0.04
4/20/2011 1.29
4/21/2011 T
4/22/2011 0.41
4/23/2011 0.47
4/24/2011 0.00
4/25/2011 0.01
4/26/2011 0.87
4/27/2011 0.79
4/28/2011 0.29
4/29/2011 0.02
4/30/2011 0.00
5/1/2011 0.00
5/2/2011 0.00
5/3/2011 0.00
5/4/2011 0.00
5/5/2011 0.00
5/6/2011 0.13
5/7/2011 0.01
5/8/2011 0.01
5/9/2011 0.00
5/10/2011 0.00
5/11/2011 0.00
5/12/2011 0.30
5/13/2011 0.10
5/14/2011 0.02
5/15/2011 0.64
5/16/2011 0.21
5/17/2011 0.00
5/18/2011 0.04
5/19/2011 0.01
5/20/2011 0.00
5/21/2011 0.00
5/22/2011 0.00
5/23/2011 0.02
5/24/2011 0.03
5/25/2011 0.01
5/26/2011 2.91
5/27/2011 0.03
5/28/2011 T
5/29/2011 0.28
5/30/2011 0.58
5/31/2011 0.00
6/1/2011 0.00
6/2/2011 0.00
6/3/2011 T
6/4/2011 0.00
6/5/2011 0.53
6/6/2011 0.00
6/7/2011 0.00
6/8/2011 0.00
6/9/2011 1.33
6/10/2011 2.86
6/11/2011 0.03
6/12/2011 0.01
6/13/2011 0.00
6/14/2011 0.00
6/15/2011 0.51
6/16/2011 0.49
6/17/2011 0.05
6/18/2011 0.00
6/19/2011 0.00
6/20/2011 1.07
6/21/2011 0.26
6/22/2011 0.08
6/23/2011 0.05
6/24/2011 0.02
6/25/2011 **
6/26/2011 T
6/27/2011 0.03
6/28/2011 0.10
6/29/2011 0.00
6/30/2011 0.00
Day of YearDaily PrcpMultiday Prcp
7/1/2011 0.07
7/2/2011 **
7/3/2011 0.00
7/4/2011 **
7/5/2011 0.00
7/6/2011 0.00
7/7/2011 0.09
7/8/2011 0.00
7/9/2011 0.00
7/10/2011 0.00
7/11/2011 0.00
7/12/2011 0.19
7/13/2011 0.05
7/14/2011 0.00
7/15/2011 0.00
7/16/2011 0.00
7/17/2011 T
7/18/2011 0.01
7/19/2011 0.00
7/20/2011 0.00
7/21/2011 0.00
7/22/2011 0.00
7/23/2011 2.86
7/24/2011 0.04
7/25/2011 0.75
7/26/2011 0.00
7/27/2011 0.00
7/28/2011 0.83
7/29/2011 0.27
7/30/2011 0.00
7/31/2011 0.00
8/1/2011 0.00
8/2/2011 0.00
8/3/2011 0.56
8/4/2011 0.00
8/5/2011 0.00
8/6/2011 0.44
8/7/2011 0.01
8/8/2011 0.77
8/9/2011 0.35
8/10/2011 0.00
8/11/2011 0.00
8/12/2011 0.00
8/13/2011 0.00
8/14/2011 0.23
8/15/2011 0.01
8/16/2011 0.00
8/17/2011 **
8/18/2011 0.00
8/19/2011 0.00
8/20/2011 **
8/21/2011 0.35
8/22/2011 0.00
8/23/2011 0.00
8/24/2011 0.61
8/25/2011 0.00
8/26/2011 0.00
8/27/2011 0.00
8/28/2011 0.00
8/29/2011 0.00
8/30/2011 0.00
8/31/2011 0.17
9/1/2011 0.00
9/2/2011 0.02
9/3/2011 0.00
9/4/2011 1.17
9/5/2011 0.00
9/6/2011 0.00
9/7/2011 0.00
9/8/2011 0.00
9/9/2011 0.28
9/10/2011 0.03
9/11/2011 **
9/12/2011 0.00
9/13/2011 0.00
9/14/2011 0.00
9/15/2011 0.07
9/16/2011 0.00
9/17/2011 0.00
9/18/2011 **
9/19/2011 0.68
9/20/2011 0.00
9/21/2011 0.00
9/22/2011 0.00
9/23/2011 0.00
9/24/2011 0.10
9/25/2011 0.01
9/26/2011 1.21
9/27/2011 0.50
9/28/2011 0.09
9/29/2011 0.13
9/30/2011 0.14



Observation Date Observation Time Precipitation Snowfall Snowfall SWE Snow Depth Snow SWE Notes
10/1/2010 6:48 AM 0.00 0.0 M M M
10/2/2010 6:43 AM 0.13 M M M M Light drizzle at ob time.
10/3/2010 6:45 AM 0.07 M M M M
10/4/2010 6:45 AM T M M M M A couple of light sorinkles eary yesterday a.m.
10/5/2010 6:45 AM 0.00 0.0 M M M
10/6/2010 7:00 AM 0.00 0.0 M M M
10/7/2010 6:45 AM 0.00 0.0 M M M
10/8/2010 6:50 AM 0.00 0.0 M M M
10/9/2010 6:38 AM 0.00 0.0 M M M
10/10/2010 6:45 AM 0.00 0.0 M M M
10/11/2010 6:45 AM 0.00 0.0 M M M
10/12/2010 6:45 AM 0.00 0.0 M M M
10/13/2010 6:48 AM 0.00 0.0 M M M
10/14/2010 6:45 AM 0.29 M M M M Yesterday's rain began with a hail,rain mix. Hail was rice sized and lasted a couple of minutes. A hail report was submitted
10/15/2010 6:40 AM 0.00 0.0 M M M
10/16/2010 6:35 AM 0.00 0.0 M M M
10/17/2010 7:00 AM 0.00 0.0 M M M
10/18/2010 6:45 AM 0.00 0.0 M M M
10/19/2010 6:50 AM 0.00 0.0 M M M
10/20/2010 7:00 AM 0.00 0.0 M M M
10/21/2010 6:45 AM 0.00 0.0 M M M
10/22/2010 6:45 AM 0.00 0.0 M M M
10/23/2010 6:50 AM 0.00 0.0 M M M
10/24/2010 6:40 AM 0.25 M M M M
10/25/2010 6:45 AM 1.11 M M M M
10/26/2010 6:42 AM 0.03 M M M M Rain started just before ob time. Heavy tstorms have yet to arrive. Very strong winds.
10/27/2010 6:45 AM 0.53 M M M M
10/28/2010 7:00 AM 0.00 0.0 M M M
10/29/2010 7:00 AM 0.00 0.0 M M M
10/30/2010 6:45 AM 0.00 0.0 M M M
10/31/2010 7:20 AM 0.00 0.0 M M M
11/1/2010 6:45 AM 0.00 0.0 M M M
11/2/2010 6:45 AM 0.00 0.0 M M M
11/3/2010 6:50 AM 0.00 0.0 M M M
11/4/2010 6:45 AM 0.02 M M M M
11/5/2010 6:45 AM 0.02 M M M M
11/6/2010 7:00 AM 0.00 0.0 M M M
11/9/2010 6:45 AM 0.00 0.0 M M M
11/10/2010 6:50 AM 0.00 0.0 M M M
11/11/2010 6:50 AM 0.00 0.0 M M M
11/12/2010 6:45 AM 0.04 M M M M
11/15/2010 6:45 AM 0.09 M M M M
11/16/2010 7:00 AM 0.00 0.0 M M M
11/17/2010 6:45 AM T M M M M
11/18/2010 7:00 AM T M M M M
11/19/2010 7:00 AM 0.00 0.0 M M M
11/20/2010 7:00 AM 0.00 0.0 M M M
11/21/2010 7:00 AM 0.00 0.0 M M M
11/22/2010 7:00 AM 0.01 M M M M
11/23/2010 7:00 AM 0.85 M M M M Rain and wind but no severe storms here.
11/24/2010 7:00 AM 0.00 0.0 M M M
11/25/2010 7:00 AM 0.40 M M M M Rain with some thunder.
11/26/2010 7:00 AM 0.00 0.0 M M M
11/27/2010 7:05 AM 0.00 0.0 M M M
11/28/2010 7:00 AM 0.00 0.0 M M M
11/29/2010 6:45 AM 0.00 0.0 M M M
11/30/2010 7:00 AM 0.68 M M M M
12/1/2010 7:00 AM T T M T M Windy. Overnight snow showers.
12/2/2010 7:00 AM T T M M M Snow flurries all morning yesterday, but strong winds kept snow away from gauge.
12/3/2010 7:00 AM 0.00 0.0 M M M
12/4/2010 7:00 AM 0.21 2.5 0.21 2.5 M Snow started around 11:30 last night.
12/5/2010 6:45 AM 0.14 0.8 0.09 3.0 M Snow diminished to flurries by mid-morning. Flurries and some grainy ice pellets for a short time during afternoon and evening.
12/6/2010 7:00 AM 0.00 0.0 0.00 3.0 0.26 11° at ob time.
12/7/2010 7:00 AM T T M 3.0 M 14 degrees at ob time. Occasional snow flurries yesterday.
12/8/2010 7:00 AM 0.00 0.0 0.00 2.5 M 11°, calm winds.
12/9/2010 7:00 AM 0.00 0.0 M 2.5 M cloudy, calm, 13deg.
12/10/2010 7:00 AM 0.10 1.3 0.11 3.5 M Bulk of snow arrived about 8:PM, and was over around midnight.
12/11/2010 7:00 AM 0.00 0.0 M 3.0 M High thin clouds and some light fog.
12/12/2010 7:00 AM 0.57 0.4 0.03 2.5 M Rain began around 10:30 a.m as light drizzle, then steadily increasing to moderate rain, 38 deg. Rain changed over to snow around 8:30 p.m. Snow ended shortly with slight accumulation. 1:a.m it was cloudy, calm with no precip,24deg. Light snow started at 6:30 a.m. this morning, almost calm winds, 21deg.
12/13/2010 6:30 AM 0.15 0.4 0.05 2.0 0.27 Very cold and windy. Temp 10 deg. High winds made measurements very problematic. Total new snow measurement from snow board is not real accurate. I lost new snow and old snow. Really didn't get a lot of snow.
12/14/2010 7:00 AM T T M 2.0 M Snow flurries throughout day.
12/15/2010 7:00 AM 0.00 0.0 M 2.0 M 3deg and calm.
12/16/2010 7:00 AM 0.00 0.0 M 2.0 M
12/17/2010 7:00 AM 0.02 0.4 0.02 2.0 M Light snow during evening.
12/18/2010 7:00 AM 0.00 0.0 M 2.0 M Some high thin clouds and calm winds. 12deg.
12/19/2010 7:00 AM 0.00 0.0 M 2.0 M cloudy and cold, 15 deg.
12/20/2010 7:00 AM 0.00 0.0 M 2.0 0.29 12 deg with increasing clouds
12/21/2010 7:00 AM 0.29 3.4 0.28 5.0 M Snowfall total of 3.4" was measured at 9:00 p.m. when snow tapered off to just a few flurries. Very light drizzle at ob time.
12/22/2010 7:00 AM T T M 4.0 M Snow flurries just before ob time.
12/23/2010 7:00 AM T T M 4.0 M Period of light snow yesterday morning leaving a light dusting.
12/24/2010 7:00 AM 0.00 0.0 M 4.0 M Cloudy, 29 deg.
12/25/2010 7:00 AM 0.50 1.8 0.23 5.0 M Flurries and light snow mid morning till late afternoon. A heavier band of snow moved through late at night. Happy Holiday's to all of you!
12/26/2010 7:00 AM 0.13 0.6 0.06 5.5 M Flurries at ob time. More moderate snow at times. Snow flurries and very light snow Christmas Day evening.
12/27/2010 7:00 AM 0.01 0.1 0.01 5.5 0.83 Snow showers and flurries at times during day.
12/28/2010 7:00 AM 0.00 0.0 M 5.0 M Cloudy, 17 deg.
12/29/2010 7:00 AM 0.00 0.0 M 5.0 M Cold with light fog. 18 deg.
12/30/2010 7:00 AM 0.04 M M 3.5 M Light rain and drizzle overnight. Snow melting fast.
12/31/2010 7:00 AM 0.18 0.0 M 0.0 M Steady rain at ob time with lightning and thunder. All snow melted.
1/1/2011 6:45 AM 0.80 M M M M Rain most of day. Afternoon tstorms with several heavy downpours. HAPPY NEW YEAR
1/2/2011 7:00 AM 0.00 0.0 M M M A breezy, cold and clear 13 deg.
1/3/2011 7:00 AM 0.00 0.0 M M M
1/4/2011 7:00 AM 0.00 0.0 M M M
1/5/2011 7:00 AM 0.00 0.0 M M M Clear and cold, 11 deg.
1/6/2011 7:00 AM T T M M M observed snow flurries around midnight.
1/7/2011 7:00 AM T T M T M
1/8/2011 6:45 AM 0.02 0.3 0.03 0.3 M Very light snow during afternoon and early evening hours.
1/9/2011 7:00 AM 0.00 0.0 M T M
1/10/2011 7:00 AM 0.00 0.0 M T M Partly cloudy, 20 deg.
1/11/2011 6:45 AM 0.02 0.3 0.02 0.3 M Very light snow falling at ob time. Just a dusting to report at this time.
1/12/2011 6:45 AM 0.18 2.7 0.18 2.5 0.19 Heavier snow started at 7:45 a.m. Measured 1.9" at 1:00 P.M, 2.5" at 4:00 P.M, 2.7" at 6:00 P.M. No further accumulation after 6:00 P.M. when wind picked up.
1/13/2011 7:00 AM T T M 2.0 M Late night snow flurries and flurries at ob time.
1/14/2011 7:00 AM T T M 2.0 M Very light during evening hours.
1/15/2011 7:00 AM T T M 2.0 M A very light dusting of snow.
1/16/2011 7:00 AM 0.00 0.0 M 2.0 M
1/17/2011 7:00 AM T T M 1.5 0.15 Cloudy, 21 deg. Snow predicted for today.
1/18/2011 7:00 AM 0.25 T M 1.0 M A.M. snow left a dusting. Afternoon precip started around 2:00 p.m. as snow /sleet mix that quickly changed to all rain. Some light flurries at ob time
1/19/2011 7:00 AM 0.02 0.0 M 1.0 M Light drizzle during most of day.
1/20/2011 7:00 AM T T M 1.0 M Snow flurries at ob time, 18 deg
1/21/2011 7:00 AM 0.00 0.0 M 1.0 M -2° at ob time.
1/22/2011 7:00 AM 0.01 0.2 M 1.0 M Snow flurries at ob time.
1/23/2011 7:00 AM T 0.2 M 1.0 M Only a trace in gauge, but a period of light of light snow yesterday a.m. left .2" on snowboard, measured at 11:00 a.m. Another dusting of snow just before daybreak.
1/24/2011 7:00 AM 0.05 0.7 0.05 1.5 0.20 Light snow after 9:00 p.m.
1/25/2011 7:00 AM T M M 1.5 M Light drizzle during day
1/26/2011 7:00 AM T T M 1.0 M A.m. snow flurries yesterday.
1/27/2011 7:00 AM T T 0.00 1.0 M Very light snow flurries throughout day and evening.
1/28/2011 7:00 AM 0.07 1.3 0.08 2.0 M New snow total of 1.3" measured at 5:00 P.M, after snow ended. No further accumulation.
1/29/2011 7:00 AM 0.00 0.0 M 2.0 M Cloudy, 26 deg.
1/30/2011 7:00 AM T T M 1.0 M Snow flurries during late evening hours
1/31/2011 7:00 AM T T M 1.0 0.23 Snow flurries yesterday
2/1/2011 7:00 AM 0.08 0.5 0.05 1.5 M Overnight light snow
2/2/2011 7:00 AM 1.69 16.0 1.69 17.5 M Snow started with a vengeance at 1:45 P.M. I emptied gauge at 6 hour interval's. I can only guess at my total new snow amount since my snow board was swept clean of snow. My gauge total is more accurate. I'm estimating my new snow total at 16". I took several measurements, averaged them and subtracted previous on ground total to come up with 16". Still snowing at ob time with several more inches likely.
2/3/2011 7:00 AM 0.12 1.4 0.12 17.5 M gauge total more accurate. Strong winds where still blowing when lake effect snow band passed through.
2/4/2011 7:00 AM 0.00 0.0 M 17.5 M Clear, calm and very cold. 8 deg.
2/5/2011 7:00 AM 0.00 0.0 M 17.0 M Mostly cloudy, 14 deg.
2/6/2011 7:00 AM 0.06 1.1 0.06 18.5 M snow flurries at ob time. 29 deg.
2/7/2011 7:00 AM T T M 18.0 3.75 occasional light snow / snow flurries.
2/8/2011 7:00 AM 0.13 1.8 0.09 17.5 M Periods of light snow, with a heavier burst of snow at 3:00 P.M. and at 9:00 P.M.
2/9/2011 7:00 AM T T M 17.5 M Snow flurries yesterday a.m.
2/10/2011 7:00 AM 0.00 0.0 M 17.0 M -6 deg. at ob time.
2/11/2011 7:00 AM 0.00 0.0 M 17.5 M
2/12/2011 7:00 AM T T M 16.5 M Snow flurries, light snow yesterday p.m.
2/13/2011 7:00 AM 0.00 0.0 M 14.5 M
2/14/2011 7:00 AM 0.00 0.0 M 10.0 3.45 Snow is melting down quickly. Overnight temp stayed well above freezing. 39 deg at ob time.
2/15/2011 7:00 AM 0.00 0.0 M 9.0 M
2/16/2011 7:00 AM 0.02 M M 7.5 M A period of light rain last night.
2/17/2011 7:00 AM 0.00 0.0 M 2.5 M
2/18/2011 7:00 AM 0.00 0.0 M T M
2/19/2011 7:00 AM 0.00 0.0 M M M Snow is all gone, can't believe it.
2/20/2011 7:00 AM T T M M M Sleet/rain mix at ob time.
2/21/2011 7:00 AM 0.90 0.0 M 0.0 M Some heavy downpours that included small hail. A hail report was submitted.
2/22/2011 7:00 AM 0.05 0.1 M 0.1 M Rain, rain/sleet mix, sleet and snow throughout period.
2/23/2011 7:00 AM T T M 0.0 M Morning snow flurries.
2/24/2011 7:00 AM 0.07 T M T M Rain, rain/sleet mix during evening.
2/25/2011 7:00 AM 0.05 0.5 0.05 0.5 M Heavier snow missed this location.
2/26/2011 7:00 AM 0.09 0.9 0.09 1.0 M
2/27/2011 7:00 AM 0.04 T M 0.5 M A few flurries during daytime. Drizzle during evening and night.
2/28/2011 7:00 AM 0.66 0.0 M 0.0 M Rain and a thunder storm.
3/1/2011 7:00 AM 0.00 0.0 M 0.0 M
3/2/2011 7:00 AM 0.00 0.0 M 0.0 M
3/3/2011 7:00 AM 0.00 0.0 M 0.0 M
3/4/2011 7:00 AM T 0.0 M 0.0 M A couple of sprinkles of rain earlier this a.m., just before dawn.
3/5/2011 7:00 AM 1.05 0.0 M 0.0 M Heavy rain at times. Strong winds blowing now.
3/6/2011 7:00 AM 0.06 0.5 0.10 0.5 M Periods of light snow throughout afternoon and evening.
3/7/2011 7:00 AM 0.00 0.0 M T M A little bit of snow in shady area's.
3/8/2011 7:00 AM 0.00 0.0 M 0.0 M
3/9/2011 7:00 AM 0.40 0.0 M 0.0 M Light rain at ob time.
3/10/2011 7:00 AM 0.08 T M T M Light drizzle and a dusting of snow. Some flurries at ob time.
3/11/2011 7:00 AM T T M 0.0 M Some very light snow yesterday a.m.
3/12/2011 7:00 AM 0.00 0.0 M 0.0 M
3/13/2011 7:00 AM 0.00 0.0 M 0.0 M
3/14/2011 7:00 AM 0.00 0.0 M 0.0 M
3/15/2011 7:00 AM 0.00 0.0 M 0.0 M
3/16/2011 7:00 AM 0.00 0.0 M 0.0 M
3/17/2011 7:00 AM 0.00 0.0 M 0.0 M
3/18/2011 7:00 AM 0.00 0.0 M 0.0 M
3/19/2011 7:00 AM 0.00 0.0 M M M
3/20/2011 7:00 AM 0.00 0.0 M M M
3/21/2011 7:00 AM 0.56 M M M M Edited to correct for decimal misplacement (pnk) from 5.60 inches.
3/22/2011 7:00 AM 0.55 0.0 M 0.0 M
3/23/2011 7:00 AM 0.11 0.0 M 0.0 M
3/24/2011 7:00 AM 0.01 0.1 M 0.1 M Late afternoon drizzle, late night very light, blowing snow.
3/25/2011 7:00 AM 0.00 0.0 M 0.0 M
3/26/2011 7:00 AM 0.00 0.0 M 0.0 M
3/27/2011 7:00 AM 0.00 0.0 M 0.0 M
3/28/2011 7:00 AM 0.00 0.0 M 0.0 M
3/29/2011 7:00 AM 0.00 0.0 M 0.0 M
3/30/2011 7:00 AM 0.00 0.0 M 0.0 M
3/31/2011 7:00 AM 0.00 0.0 M 0.0 M
4/1/2011 7:00 AM 0.00 0.0 M 0.0 M
4/2/2011 7:00 AM 0.15 0.0 M 0.0 M
4/3/2011 7:00 AM 0.00 0.0 M 0.0 M
4/4/2011 7:00 AM 0.18 0.0 M 0.0 M
4/5/2011 7:00 AM T M M M M A light shower/sprinkle after sunset.
4/6/2011 7:00 AM 0.00 0.0 M M M
4/7/2011 7:00 AM T 0.0 M M M A few sprinkles, very light shower after yesterday's ob time.
4/8/2011 7:00 AM 0.93 M M M M Just some very light drizzle at ob time.
4/9/2011 7:00 AM 0.02 M M M M Drizzle throughout morning into early afternoon.
4/10/2011 7:14 AM 0.00 0.0 M M M
4/11/2011 7:00 AM 0.19 M M M M
4/12/2011 7:00 AM 0.00 0.0 M M M
4/13/2011 7:00 AM 0.00 0.0 M M M
4/14/2011 7:00 AM 0.00 0.0 M M M
4/15/2011 7:00 AM 0.00 0.0 M M M
4/16/2011 7:00 AM 0.31 M M M M A little light rain/drizzle at ob time.
4/17/2011 7:00 AM 0.14 M M M M
4/18/2011 7:00 AM 0.49 T M T M Still some light drizzle at ob time. Had some sleet on ground.
4/19/2011 7:00 AM 0.04 M M M M Light rain at ob time.
4/20/2011 7:00 AM 1.29 M M M M Heavy downpours during evening thunderstorms. Periods of small hail-report submitted. On and off rain all day.
4/21/2011 7:00 AM T M M M M Some light rain and drizzle right after yesterday's ob time.
4/22/2011 7:00 AM 0.41 M M M M Light rain falling at ob time.
4/23/2011 7:00 AM 0.47 M M M M
4/24/2011 7:00 AM 0.00 0.0 M M M
4/25/2011 7:00 AM 0.01 M M M M Light rain started about 5:30 a.m. Light shower at ob time.
4/26/2011 7:00 AM 0.87 M M M M Some very light drizzle at ob time.
4/27/2011 7:00 AM 0.79 M M M M Light rain at ob time. Had a very heavy downpour at about 2:00p.m. that lasted for at least for half an hour, tapered off to a steady rain for at least another half an hour.
4/28/2011 7:00 AM 0.29 M M M M Rain during morning hours, basically with dry a few sprinkles during afternoon.
4/29/2011 7:00 AM 0.02 M M M M Occasional light showers throught most of the morning and afternoon.
4/30/2011 7:00 AM 0.00 0.0 M M M
5/1/2011 7:00 AM 0.00 0.0 M M M
5/2/2011 7:00 AM 0.00 0.0 M M M
5/3/2011 7:00 AM 0.00 0.0 M M M
5/4/2011 7:00 AM 0.00 0.0 M M M
5/5/2011 7:00 AM 0.00 0.0 M M M
5/6/2011 7:00 AM 0.13 M M M M A fast moving thunder shower during the evening.
5/7/2011 7:00 AM 0.01 M M M M Light rain at ob time.
5/8/2011 7:00 AM 0.01 M M M M A few light showers/sprinkles during day.
5/9/2011 7:00 AM 0.00 0.0 M M M
5/10/2011 7:00 AM 0.00 0.0 M M M
5/11/2011 7:00 AM 0.00 0.0 M M M
5/12/2011 7:00 AM 0.30 M M M M
5/13/2011 7:00 AM 0.10 M M M M
5/14/2011 7:00 AM 0.02 M M M M
5/15/2011 7:00 AM 0.64 M M M M
5/16/2011 7:00 AM 0.21 M M M M
5/17/2011 7:00 AM 0.00 0.0 M M M
5/18/2011 7:00 AM 0.04 M M M M Very light rain at ob time.
5/19/2011 7:00 AM 0.01 M M M M Light drizzle, sprinkles after yesterday's ob time.
5/20/2011 7:00 AM 0.00 0.0 M M M
5/21/2011 7:00 AM 0.00 0.0 M M M
5/22/2011 7:00 AM 0.00 0.0 M M M
5/23/2011 7:00 AM 0.02 M M M M
5/24/2011 7:00 AM 0.03 M M M M Early am showers
5/25/2011 7:00 AM 0.01 M M M M
5/26/2011 7:00 AM 2.91 M M M M Rain at ob time.
5/27/2011 7:00 AM 0.03 M M M M
5/28/2011 7:00 AM T M M M M
5/29/2011 7:00 AM 0.28 M M M M
5/30/2011 7:00 AM 0.58 M M M M
5/31/2011 7:00 AM 0.00 0.0 M M M
6/1/2011 7:00 AM 0.00 0.0 M M M
6/2/2011 7:00 AM 0.00 0.0 M M M
6/3/2011 7:00 AM T M M M M Overnight sprinkles.
6/4/2011 7:00 AM 0.00 0.0 M M M
6/5/2011 7:00 AM 0.53 M M M M Torrential rain and gale force wind during height of yesterday's storm. Storm lasted about half an hour. Sky turned dark as night and I was positve another Oak Lawn tornado was going to happen.
6/6/2011 7:00 AM 0.00 0.0 M M M
6/7/2011 7:00 AM 0.00 0.0 M M M
6/8/2011 7:00 AM 0.00 0.0 M M M
6/9/2011 7:00 AM 1.33 M M M M Strong thunderstorms around 3a.m and again at 5a.m. Still raining at ob time.
6/10/2011 7:00 AM 2.86 M M M M More thunerstorms early this am, but no where near as bad as yesterday. 2 day storm total = 4.19. There was serious street flooding and many flooded basements in my area.
6/11/2011 7:00 AM 0.03 M M M M
6/12/2011 7:00 AM 0.01 M M M M Light drizzle after 9 p.m. last night.
6/13/2011 7:00 AM 0.00 0.0 M M M
6/14/2011 7:00 AM 0.00 0.0 M M M
6/15/2011 7:00 AM 0.51 M M M M Thundershowers began early this morning. Raining steadily at ob time.
6/16/2011 7:00 AM 0.49 M M M M Passing showers at ob time.
6/17/2011 7:00 AM 0.05 M M M M A few showers right after yesterday's ob time.
6/18/2011 7:00 AM 0.00 0.0 M M M
6/19/2011 7:00 AM 0.00 0.0 M M M
6/20/2011 7:00 AM 1.07 M M M M Heavy thunderstorm moving through at ob time. Rain began at 6:21 a.m. 1.07 inches in 50 minutes.
6/21/2011 7:00 AM 0.26 M M M M Rain amount is what was measured right after yesterday's ob time during heavy thunderstorm.
6/22/2011 7:00 AM 0.08 M M M M Strong thunderstorm blew through at 8:15 p.m. with more wind and thunder than rain
6/23/2011 7:00 AM 0.05 M M M M Showers early this morning. Some very light drizzle at ob time.
6/24/2011 7:00 AM 0.02 M M M M Occassional showers throughout day yesterday.
6/27/2011 7:00 AM 0.03 M M M M Light rain started just after 6:00 am. Still raining at ob time.
6/28/2011 7:00 AM 0.10 M M M M A.M. showers yesterday.
6/29/2011 7:00 AM 0.00 0.0 M M M
6/30/2011 7:12 AM 0.00 0.0 M M M
7/1/2011 7:00 AM 0.07 M M M M Last night's severe storms skirted around my area. I had more wind than anything. Great lightning show in the southeast and east skies.
7/6/2011 7:00 AM 0.00 0.0 M M M
7/7/2011 7:00 AM 0.09 M M M M
7/8/2011 7:00 AM 0.00 0.0 M M M
7/9/2011 7:00 AM 0.00 0.0 M M M
7/10/2011 7:00 AM 0.00 0.0 M M M
7/11/2011 7:00 AM 0.00 0.0 M M M
7/12/2011 7:00 AM 0.19 M M M M Worst of yesterday's storm passed to north of me, more wind than rain. Neighors across street still without power after 23 hours.
7/13/2011 7:00 AM 0.05 M M M M
7/14/2011 7:00 AM 0.00 0.0 M M M
7/15/2011 7:00 AM 0.00 0.0 M M M
7/16/2011 7:00 AM 0.00 0.0 M M M
7/17/2011 7:00 AM T M M M M A few sprinkles yesterday a.m.
7/18/2011 7:00 AM 0.01 M M M M a pre-dawn shower.
7/19/2011 7:00 AM 0.00 0.0 M M M
7/20/2011 7:00 AM 0.00 0.0 M M M
7/21/2011 7:00 AM 0.00 0.0 M M M
7/22/2011 7:00 AM 0.00 0.0 M M M
7/23/2011 7:00 AM 2.86 M M M M Heavy rain from 3a.m storm. Local street flooding. About .65 rain from Friday a.m storm. Total rain = 2.86
7/24/2011 7:00 AM 0.04 M M M M A lot of lightning and thunder last night, but little rain.
7/25/2011 7:00 AM 0.75 M M M M
7/26/2011 7:00 AM 0.00 0.0 M M M
7/27/2011 7:00 AM 0.00 0.0 M M M
7/28/2011 7:00 AM 0.83 M M M M Intense fast moving thunderstorm at 12:30 am.
7/29/2011 7:00 AM 0.27 M M M M
7/30/2011 7:00 AM 0.00 0.0 M M M
7/31/2011 7:00 AM 0.00 0.0 M M M
8/1/2011 7:00 AM 0.00 0.0 M M M
8/2/2011 7:36 AM 0.00 0.0 M M M
8/3/2011 7:00 AM 0.56 M M M M
8/4/2011 7:00 AM 0.00 0.0 M M M
8/5/2011 7:00 AM 0.00 0.0 M M M
8/6/2011 7:00 AM 0.44 M M M M
8/7/2011 7:00 AM 0.01 M M M M
8/8/2011 7:00 AM 0.77 M M M M a strong thunderstorm struck area with high winds and heavy rain. The duration of the storm was only about half an hour but very intense. Some local street flooding and lots of small branches down.
8/9/2011 7:00 AM 0.35 M M M M
8/10/2011 7:00 AM 0.00 0.0 M M M
8/11/2011 7:00 AM 0.00 0.0 M M M
8/12/2011 7:00 AM 0.00 0.0 M M M
8/13/2011 7:00 AM 0.00 0.0 M M M
8/14/2011 7:00 AM 0.23 M M M M
8/15/2011 7:00 AM 0.01 M M M M
8/16/2011 7:00 AM 0.00 0.0 M M M
8/19/2011 7:00 AM 0.00 0.0 M M M
8/22/2011 7:00 AM 0.00 0.0 M M M
8/23/2011 7:00 AM 0.00 0.0 M M M
8/24/2011 7:00 AM 0.61 M M M M
8/25/2011 7:00 AM 0.00 0.0 M M M
8/26/2011 7:00 AM 0.00 0.0 M M M
8/27/2011 7:00 AM 0.00 0.0 M M M
8/28/2011 7:00 AM 0.00 0.0 M M M
8/29/2011 7:00 AM 0.00 0.0 M M M
8/30/2011 7:00 AM 0.00 0.0 M M M
8/31/2011 7:00 AM 0.17 M M M M
9/1/2011 7:00 AM 0.00 0.0 M M M
9/2/2011 7:00 AM 0.02 M M M M
9/3/2011 7:00 AM 0.00 0.0 M M M
9/4/2011 7:00 AM 1.17 M M M M
9/5/2011 7:00 AM 0.00 0.0 M M M
9/6/2011 7:00 AM 0.00 0.0 M M M
9/7/2011 7:00 AM 0.00 0.0 M M M
9/8/2011 7:00 AM 0.00 0.0 M M M
9/9/2011 7:00 AM 0.28 M M M M
9/10/2011 7:00 AM 0.03 M M M M
9/13/2011 7:00 AM 0.00 0.0 M M M
9/14/2011 7:00 AM 0.00 0.0 M M M
9/15/2011 7:00 AM 0.07 M M M M
9/16/2011 7:00 AM 0.00 0.0 M M M
9/17/2011 7:00 AM 0.00 0.0 M M M
9/20/2011 7:00 AM 0.00 0.0 M M M Dense fog at ob time.
9/21/2011 7:00 AM 0.00 0.0 M M M
9/22/2011 7:00 AM 0.00 0.0 M M M
9/23/2011 7:00 AM 0.00 0.0 M M M
9/24/2011 7:00 AM 0.10 M M M M
9/25/2011 7:00 AM 0.01 M M M M
9/26/2011 7:00 AM 1.21 M M M M light rain at ob time.
9/27/2011 7:00 AM 0.50 M M M M Steady rain falling at ob time.
9/28/2011 7:00 AM 0.09 M M M M
9/29/2011 7:00 AM 0.13 M M M M
9/30/2011 7:00 AM 0.14 M M M M



Start Date End Date & Time Duration in Days Precipitation Snow Depth Snow Depth SWE Notes
11/7/2010 11/08/2010 6:45 AM 2 0.00 M M U had log in problems with my computer on Sunday.
11/13/2010 11/14/2010 6:45 AM 2 0.05 M M
6/25/2011 6/26/2011 12:00 AM 2 T M M A couple of drops fell mid afternoon yesterday
7/2/2011 7/03/2011 12:00 AM 2 0.00 M M
7/4/2011 7/05/2011 12:00 AM 2 0.00 M M
8/17/2011 8/18/2011 12:00 AM 2 0.00 M M
8/20/2011 8/21/2011 12:00 AM 2 0.35 M M All rain fell during second day of reporting period
9/11/2011 9/12/2011 12:00 AM 2 0.00 M M
9/18/2011 9/19/2011 7:00 AM 2 0.68 M M All precp fell from Sunday, 9\18 to Monday 9\19



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
10/13/2010 9:12 AM Rice Rice Rice Hard 5 1min no damage Continuous True Same time as rain Same time as smaller hail
2/20/2011 2:44 PM Frequent heavy downpours with hail mixed in. Rice Rice Rice Soft|White Ice 2 no damage Intermittent True Same time as rain Same time as smaller hail
4/19/2011 7:38 PM strong thunderstorms with heavey downpours and hail moving through area. 1/4" Pea Size Rice Rice Hard 2 1min no damage Intermittent True Same time as rain Same time as smaller hail