Station Overview Station Location
Station Number IL-DP-42 Latitude 41.91301
Station Name Carol Stream 0.3 SSE Longitude -88.129388
County Du Page Elevation (ft) 758



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 2.98 1.68 28 1.68 28 0.00 0 0 10 1 0.0 0 0
Nov 11 3.06 3.51 30 3.49 28 0.02 2 1 5 1 0.0 0 0
Dec 11 2.17 2.84 31 2.84 31 0.00 0 0 13 1 2.0 2 2
Jan 12 1.70 2.01 31 1.87 29 0.14 2 1 7 2 12.3 5 5
Feb 12 1.65 1.50 29 1.50 29 0.00 0 0 9 1 4.7 4 3
March 12 2.25 2.40 31 2.40 31 0.00 0 0 10 1 0.4 1 0
April 12 3.45 1.70 30 1.70 30 0.00 0 0 8 1 0.0 0 0
May 12 4.06 2.88 30 2.88 30 0.00 0 0 9 2 0.0 0 0
June 12 4.03 1.97 30 1.97 30 0.00 0 0 4 1 0.0 0 0
July 12 3.81 5.44 31 5.44 31 0.00 0 0 10 1 0.0 0 0
Aug 12 4.40 2.60 31 2.60 31 0.00 0 0 10 0 0.0 0 0
Sept 12 3.34 1.55 30 1.55 30 0.00 0 0 10 0 0.0 0 0
Water Year Totals: 36.90" 30.08" 362 days 29.92" 358 0.16" 4 days 2 105 days 12 days 19.4" 12 days 10 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 0.00
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 0.00
10/11/2011 0.00
10/12/2011 0.00
10/13/2011 0.44
10/14/2011 0.20
10/15/2011 0.00
10/16/2011 0.15
10/17/2011 0.00
10/18/2011 0.00
10/19/2011 0.03
10/20/2011 0.28
10/21/2011 0.02
10/22/2011 0.00
10/23/2011 0.00
10/24/2011 0.25
10/25/2011
10/26/2011 0.08
10/27/2011
10/28/2011 T
10/29/2011 0.02
10/30/2011
10/31/2011 0.21
11/1/2011 0.00
11/2/2011 0.00
11/3/2011 0.09
11/4/2011 0.00
11/5/2011 0.00
11/6/2011 0.00
11/7/2011 0.00
11/8/2011 0.56
11/9/2011 1.44
11/10/2011 **
11/11/2011 0.02
11/12/2011 0.00
11/13/2011 0.00
11/14/2011 0.00
11/15/2011 0.00
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 0.00
11/23/2011 0.21
11/24/2011 0.00
11/25/2011 0.00
11/26/2011 0.00
11/27/2011 1.19
11/28/2011 0.00
11/29/2011 0.00
11/30/2011 0.00
12/1/2011 0.00
12/2/2011 0.01
12/3/2011 0.31
12/4/2011 0.26
12/5/2011 0.00
12/6/2011 0.06
12/7/2011 0.00
12/8/2011 0.00
12/9/2011 0.04
12/10/2011 0.00
12/11/2011 0.00
12/12/2011 0.00
12/13/2011 0.00
12/14/2011 0.95
12/15/2011 0.64
12/16/2011 0.00
12/17/2011 0.08
12/18/2011 T
12/19/2011 0.00
12/20/2011 0.00
12/21/2011 0.02
12/22/2011 0.00
12/23/2011 0.00
12/24/2011 0.00
12/25/2011 0.00
12/26/2011 0.00
12/27/2011 0.09
12/28/2011 0.00
12/29/2011 0.02
12/30/2011 0.18
12/31/2011 0.18
Day of YearDaily PrcpMultiday Prcp
1/1/2012 0.05
1/2/2012 0.01
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 0.00
1/10/2012 0.00
1/11/2012 0.00
1/12/2012 0.00
1/13/2012 0.48
1/14/2012 T
1/15/2012 0.00
1/16/2012 0.00
1/17/2012 **
1/18/2012 0.14
1/19/2012 0.03
1/20/2012 0.00
1/21/2012 0.58
1/22/2012 0.00
1/23/2012 0.53
1/24/2012 0.00
1/25/2012 0.00
1/26/2012 0.00
1/27/2012 0.00
1/28/2012 0.19
1/29/2012 T
1/30/2012 0.00
1/31/2012 0.00
2/1/2012 0.00
2/2/2012 0.00
2/3/2012 0.00
2/4/2012 0.00
2/5/2012 0.02
2/6/2012 0.00
2/7/2012 T
2/8/2012 0.00
2/9/2012 0.00
2/10/2012 0.00
2/11/2012 0.08
2/12/2012 0.00
2/13/2012 0.00
2/14/2012 0.07
2/15/2012 0.00
2/16/2012 0.15
2/17/2012 0.00
2/18/2012 0.00
2/19/2012 0.00
2/20/2012 0.00
2/21/2012 0.12
2/22/2012 0.07
2/23/2012 0.00
2/24/2012 0.67
2/25/2012 0.01
2/26/2012 0.00
2/27/2012 0.00
2/28/2012 0.00
2/29/2012 0.31
3/1/2012 0.02
3/2/2012 0.00
3/3/2012 0.20
3/4/2012 0.01
3/5/2012 0.00
3/6/2012 0.00
3/7/2012 0.00
3/8/2012 0.33
3/9/2012 0.00
3/10/2012 0.00
3/11/2012 0.00
3/12/2012 0.38
3/13/2012 0.01
3/14/2012 0.00
3/15/2012 0.00
3/16/2012 0.00
3/17/2012 0.00
3/18/2012 0.00
3/19/2012 0.00
3/20/2012 0.12
3/21/2012 0.00
3/22/2012 0.00
3/23/2012 0.17
3/24/2012 0.65
3/25/2012 T
3/26/2012 0.00
3/27/2012 0.00
3/28/2012 0.00
3/29/2012 0.00
3/30/2012 0.51
3/31/2012 0.00
Day of YearDaily PrcpMultiday Prcp
4/1/2012 0.03
4/2/2012 0.00
4/3/2012 0.00
4/4/2012 0.00
4/5/2012 0.00
4/6/2012 0.00
4/7/2012 T
4/8/2012 0.00
4/9/2012 0.03
4/10/2012 0.00
4/11/2012 0.00
4/12/2012 0.00
4/13/2012 0.00
4/14/2012 0.00
4/15/2012 0.56
4/16/2012 0.37
4/17/2012 0.00
4/18/2012 0.00
4/19/2012 0.05
4/20/2012 0.00
4/21/2012 0.00
4/22/2012 0.00
4/23/2012 0.00
4/24/2012 0.00
4/25/2012 0.04
4/26/2012 0.00
4/27/2012 0.00
4/28/2012 0.28
4/29/2012 0.00
4/30/2012 0.34
5/1/2012 0.00
5/2/2012 0.18
5/3/2012 0.02
5/4/2012 0.71
5/5/2012 0.00
5/6/2012 0.00
5/7/2012 1.54
5/8/2012 0.16
5/9/2012 0.00
5/10/2012 0.04
5/11/2012 0.00
5/12/2012 0.00
5/13/2012 0.07
5/14/2012 0.00
5/15/2012 0.00
5/16/2012 0.11
5/17/2012 0.00
5/18/2012 0.00
5/19/2012 0.00
5/20/2012 0.00
5/21/2012 T
5/22/2012 0.00
5/23/2012 0.00
5/24/2012 0.00
5/25/2012 0.00
5/26/2012 0.00
5/27/2012 0.00
5/28/2012 0.00
5/29/2012 T
5/30/2012
5/31/2012 0.05
6/1/2012 1.10
6/2/2012 0.00
6/3/2012 0.00
6/4/2012 T
6/5/2012 0.00
6/6/2012 0.00
6/7/2012 0.00
6/8/2012 0.00
6/9/2012 0.00
6/10/2012 0.00
6/11/2012 0.00
6/12/2012 0.00
6/13/2012 0.00
6/14/2012 0.00
6/15/2012 0.00
6/16/2012 0.00
6/17/2012 0.46
6/18/2012 0.00
6/19/2012 0.00
6/20/2012 0.00
6/21/2012 0.00
6/22/2012 0.06
6/23/2012 0.00
6/24/2012 0.00
6/25/2012 0.00
6/26/2012 0.00
6/27/2012 0.00
6/28/2012 0.00
6/29/2012 0.00
6/30/2012 0.35
Day of YearDaily PrcpMultiday Prcp
7/1/2012 0.00
7/2/2012 1.62
7/3/2012 0.00
7/4/2012 0.00
7/5/2012 0.00
7/6/2012 0.00
7/7/2012 0.00
7/8/2012 0.00
7/9/2012 0.00
7/10/2012 0.00
7/11/2012 0.00
7/12/2012 0.00
7/13/2012 0.00
7/14/2012 1.39
7/15/2012 0.03
7/16/2012 0.00
7/17/2012 0.00
7/18/2012 0.00
7/19/2012 1.49
7/20/2012 0.00
7/21/2012 0.00
7/22/2012 0.00
7/23/2012 0.03
7/24/2012 0.32
7/25/2012 0.05
7/26/2012 0.33
7/27/2012 0.03
7/28/2012 0.00
7/29/2012 0.00
7/30/2012 T
7/31/2012 0.15
8/1/2012 0.00
8/2/2012 0.00
8/3/2012 0.00
8/4/2012 0.00
8/5/2012 0.45
8/6/2012 0.00
8/7/2012 0.00
8/8/2012 0.00
8/9/2012 0.02
8/10/2012 0.12
8/11/2012 0.00
8/12/2012 0.00
8/13/2012 0.13
8/14/2012 0.12
8/15/2012 0.02
8/16/2012 0.00
8/17/2012 0.29
8/18/2012 0.00
8/19/2012 0.00
8/20/2012 0.00
8/21/2012 0.25
8/22/2012 0.00
8/23/2012 0.08
8/24/2012 0.00
8/25/2012 0.00
8/26/2012 0.00
8/27/2012 1.12
8/28/2012 0.00
8/29/2012 0.00
8/30/2012 0.00
8/31/2012 0.00
9/1/2012 0.00
9/2/2012 0.11
9/3/2012 0.01
9/4/2012 0.01
9/5/2012 0.31
9/6/2012 0.00
9/7/2012 0.10
9/8/2012 0.08
9/9/2012 0.24
9/10/2012 0.00
9/11/2012 0.00
9/12/2012 0.00
9/13/2012 0.00
9/14/2012 0.19
9/15/2012 0.00
9/16/2012 0.00
9/17/2012 0.00
9/18/2012 0.27
9/19/2012 0.00
9/20/2012 0.00
9/21/2012 0.00
9/22/2012 0.23
9/23/2012 0.00
9/24/2012 0.00
9/25/2012 0.00
9/26/2012 0.00
9/27/2012 0.00
9/28/2012 0.00
9/29/2012 0.00
9/30/2012 0.00



Observation Date Observation Time Precipitation Snowfall Snowfall SWE Snow Depth Snow SWE Notes
10/1/2011 7:00 AM 0.00 0.0 M M M
10/2/2011 7:00 AM 0.00 0.0 M M M
10/3/2011 7:00 AM 0.00 0.0 M M M
10/4/2011 7:00 AM 0.00 0.0 M M M
10/5/2011 7:00 AM 0.00 0.0 M M M Very, very heavy dew.
10/6/2011 7:00 AM 0.00 0.0 M M M
10/7/2011 7:00 AM 0.00 0.0 M M M
10/8/2011 7:00 AM 0.00 0.0 M M M
10/9/2011 7:00 AM 0.00 0.0 M M M
10/10/2011 7:00 AM 0.00 0.0 M M M
10/11/2011 7:00 AM 0.00 0.0 M M M
10/12/2011 7:00 AM 0.00 0.0 M M M
10/13/2011 9:05 AM 0.44 M M M M Light showers at present
10/14/2011 8:00 AM 0.20 M M M M Light rain, no flooding.
10/15/2011 7:00 AM 0.00 0.0 M M M
10/16/2011 10:30 AM 0.15 M M M M
10/17/2011 7:00 AM 0.00 0.0 M M M
10/18/2011 7:00 AM 0.00 0.0 M M M
10/19/2011 9:00 AM 0.03 M M M M Light showers at time of observation.
10/20/2011 8:40 AM 0.28 M M M M Rather less than expected.
10/21/2011 7:00 AM 0.02 M M M M
10/22/2011 7:00 AM 0.00 0.0 M M M
10/23/2011 7:00 AM 0.00 0.0 M M M
10/24/2011 7:00 AM 0.25 M M M M Driving rains and frequent lightning, but only for a short period of about 15 minutes total.
10/26/2011 7:00 AM 0.08 M M M M
10/28/2011 7:00 AM T M M M M
10/29/2011 7:00 AM 0.02 M M M M Low of 28° F
10/31/2011 7:00 AM 0.21 M M M M Light to moderate rain.
11/1/2011 7:00 AM 0.00 0.0 M M M
11/2/2011 7:00 AM 0.00 0.0 M M M
11/3/2011 7:00 AM 0.09 M M M M
11/4/2011 7:00 AM 0.00 0.0 M M M
11/5/2011 7:00 AM 0.00 0.0 M M M
11/6/2011 7:00 AM 0.00 0.0 M M M
11/7/2011 7:00 AM 0.00 0.0 M M M
11/8/2011 8:00 AM 0.56 M M M M Moderate rain now falling.
11/9/2011 8:00 AM 1.44 M M M M Storm total: exactly 2.00"!
11/12/2011 7:00 AM 0.00 0.0 M M M
11/13/2011 7:00 AM 0.00 0.0 M M M
11/14/2011 7:00 AM 0.00 0.0 M M M
11/15/2011 7:00 AM 0.00 0.0 M M M
11/16/2011 7:00 AM 0.00 0.0 M M M
11/17/2011 7:00 AM 0.00 0.0 M M M
11/18/2011 7:00 AM 0.00 0.0 M M M
11/19/2011 7:00 AM 0.00 0.0 M M M
11/20/2011 7:00 AM T M M M M
11/21/2011 7:00 AM 0.00 0.0 M M M
11/22/2011 7:00 AM 0.00 0.0 M M M
11/23/2011 7:00 AM 0.21 M M M M Occasional moderate rain.
11/24/2011 7:00 AM 0.00 0.0 M M M
11/25/2011 7:00 AM 0.00 0.0 M M M
11/26/2011 7:00 AM 0.00 0.0 M M M
11/27/2011 7:00 AM 1.19 M M M M Continuous moderate rain.
11/28/2011 7:00 AM 0.00 0.0 M M M
11/29/2011 7:00 AM 0.00 0.0 M M M
11/30/2011 7:00 AM 0.00 0.0 M M M
12/1/2011 7:00 AM 0.00 0.0 M M M
12/2/2011 7:00 AM 0.01 T T M M No accumulation to report at time of observation.
12/3/2011 2:45 PM 0.31 M M M M
12/4/2011 7:00 AM 0.26 M M M M
12/5/2011 7:00 AM 0.00 0.0 M M M
12/6/2011 7:00 AM 0.06 M M M M
12/7/2011 7:00 AM 0.00 0.0 M M M
12/8/2011 7:00 AM 0.00 0.0 M M M
12/9/2011 5:45 AM 0.04 0.7 0.04 0.5 M First measurable snow of the season!
12/10/2011 7:00 AM 0.00 0.0 M M M
12/11/2011 7:00 AM 0.00 0.0 M M M
12/12/2011 7:00 AM 0.00 0.0 M M M
12/13/2011 7:00 AM 0.00 0.0 M M M
12/14/2011 8:40 AM 0.95 M M M M No thunder to report.
12/15/2011 8:10 AM 0.64 M M M M Storm total 1.59"
12/16/2011 7:00 AM 0.00 0.0 M M M
12/17/2011 9:00 AM 0.08 1.3 M 1.5 M Flurries as of 9:00a. Snow:liquid ratio of 16:1.
12/18/2011 7:00 AM T T M M M
12/19/2011 7:00 AM 0.00 0.0 M M M
12/20/2011 7:00 AM 0.00 0.0 M M M
12/21/2011 7:00 AM 0.02 0.0 0.00 0.0 0.00 Mist
12/22/2011 7:00 AM 0.00 0.0 M M M
12/23/2011 7:00 AM 0.00 0.0 M M M
12/24/2011 7:00 AM 0.00 0.0 M M M
12/25/2011 7:00 AM 0.00 0.0 M M M
12/26/2011 7:00 AM 0.00 0.0 M M M
12/27/2011 8:30 AM 0.09 0.0 0.00 0.0 0.00 No snow observed.
12/28/2011 7:00 AM 0.00 0.0 M M M
12/29/2011 7:00 AM 0.02 0.0 0.00 0.0 0.00 This fell as freezing rain, because my deck has a thin glaze on it.
12/30/2011 8:35 AM 0.18 M M M M All rain, no freezing precip. 38.3° F
12/31/2011 7:00 AM 0.18 M M M M
1/1/2012 7:00 AM 0.05 M M M M
1/2/2012 7:00 AM 0.01 0.1 0.01 0.0 0.00
1/3/2012 7:00 AM 0.00 0.0 M M M
1/4/2012 7:00 AM 0.00 0.0 M M M
1/5/2012 7:00 AM 0.00 0.0 M M M
1/6/2012 7:00 AM 0.00 0.0 M M M
1/7/2012 7:00 AM 0.00 0.0 M M M
1/8/2012 7:00 AM 0.00 0.0 M M M
1/9/2012 7:00 AM 0.00 0.0 M M M
1/10/2012 7:00 AM 0.00 0.0 M M M
1/11/2012 7:00 AM 0.00 0.0 M M M
1/12/2012 7:00 AM 0.00 0.0 M M M
1/13/2012 8:30 AM 0.48 5.5 0.51 5.0 0.51 Continuous light snow. 1" occurred overnight.
1/14/2012 7:00 AM T T M M M
1/15/2012 7:00 AM 0.00 0.0 M M M
1/16/2012 7:00 AM 0.00 0.0 M M M
1/19/2012 8:10 AM 0.03 0.2 M 0.5 M Windy but little accumulating snow.
1/20/2012 7:00 AM 0.00 0.0 M M M Waiting for a whole lot of snow.
1/21/2012 7:00 AM 0.58 5.2 0.57 6.0 0.65 Moderate to heavy snow all afternoon/evening.
1/22/2012 7:00 AM 0.00 0.0 M M M
1/23/2012 8:30 AM 0.53 0.0 0.00 1.0 M All liquid.
1/24/2012 7:00 AM 0.00 0.0 M M M
1/25/2012 7:00 AM 0.00 0.0 M M M
1/26/2012 7:00 AM 0.00 0.0 M M M
1/27/2012 7:00 AM 0.00 0.0 M M M
1/28/2012 7:00 AM 0.19 1.3 M 2.0 M Heavy wet snow. Evenly distributed so I skipped the core measurement.
1/29/2012 7:00 AM T M M M M
1/30/2012 7:00 AM 0.00 0.0 M M M
1/31/2012 7:00 AM 0.00 0.0 M M M
2/1/2012 7:00 AM 0.00 0.0 M M M
2/2/2012 7:00 AM 0.00 0.0 M M M
2/3/2012 7:00 AM 0.00 0.0 M M M
2/4/2012 7:00 AM 0.00 0.0 M M M
2/5/2012 7:00 AM 0.02 M M M M
2/6/2012 7:00 AM 0.00 0.0 M M M
2/7/2012 8:15 AM T M M M M 31.5° F. Very light freezing drizzle, not accumulating.
2/8/2012 7:00 AM 0.00 0.0 M M M
2/9/2012 7:00 AM 0.00 0.0 M M M
2/10/2012 7:00 AM 0.00 0.0 M M M
2/11/2012 7:00 AM 0.08 1.2 M 1.5 M Occasional heavy snow
2/12/2012 7:00 AM 0.00 0.0 M M M
2/13/2012 7:00 AM 0.00 0.0 M M M
2/14/2012 9:00 AM 0.07 0.7 M 1.0 M Still light snow at time of observation
2/15/2012 7:00 AM 0.00 0.0 M M M
2/16/2012 7:00 AM 0.15 M M M M
2/17/2012 7:00 AM 0.00 0.0 M M M
2/18/2012 7:00 AM 0.00 0.0 M M M
2/19/2012 7:00 AM 0.00 0.0 M M M
2/20/2012 7:00 AM 0.00 0.0 M M M
2/21/2012 8:00 AM 0.12 0.2 M M M Snow was not accumulating on non-grassy surfaces.
2/22/2012 10:00 PM 0.07 M M M M Forgot to check this morning; this includes afternoon showers.
2/23/2012 7:00 AM 0.00 0.0 M M M
2/24/2012 7:30 AM 0.67 2.6 M 3.5 0.32 Still light snow. I don't know how much fell as rain before the conversion to frozen precip.
2/25/2012 7:00 AM 0.01 M M M M
2/26/2012 7:00 AM 0.00 0.0 M M M
2/27/2012 7:00 AM 0.00 0.0 M M M
2/28/2012 7:00 AM 0.00 0.0 M M M
2/29/2012 8:45 AM 0.31 M M 0.0 0.00 No thunder, fell entirely as rain.
3/1/2012 7:00 AM 0.02 M M M M
3/2/2012 7:00 AM 0.00 0.0 M M M
3/3/2012 9:00 AM 0.20 0.4 M 0.0 0.00 Some graupel. Light snow at time of observation. Snow melted before I could get a core measurement.
3/4/2012 7:00 AM 0.01 M M M M
3/5/2012 7:00 AM 0.00 0.0 M M M
3/6/2012 7:00 AM 0.00 0.0 M M M
3/7/2012 7:00 AM 0.00 0.0 M M M
3/8/2012 8:00 AM 0.33 M M M M Not sure when this happened, at all. It's not raining now.
3/9/2012 7:00 AM 0.00 0.0 M M M
3/10/2012 7:00 AM 0.00 0.0 M M M
3/11/2012 7:00 AM 0.00 0.0 M M M
3/12/2012 8:30 AM 0.38 M M M M No thunder to report.
3/13/2012 7:00 AM 0.01 M M M M
3/14/2012 7:00 AM 0.00 0.0 M M M
3/15/2012 7:00 AM 0.00 0.0 M M M
3/16/2012 7:00 AM 0.00 0.0 M M M
3/17/2012 7:00 AM 0.00 0.0 M M M
3/18/2012 7:00 AM 0.00 0.0 M M M
3/19/2012 7:00 AM 0.00 0.0 M M M
3/20/2012 7:00 AM 0.12 M M M M
3/21/2012 7:00 AM 0.00 0.0 M M M
3/22/2012 7:00 AM 0.00 0.0 M M M
3/23/2012 8:00 AM 0.17 M M M M Light rain ongoing. 60.5° F
3/24/2012 10:00 AM 0.65 M M M M No accumulation after 5:30p.
3/25/2012 7:00 AM T M M M M Light mist.
3/26/2012 7:00 AM 0.00 0.0 M M M
3/27/2012 7:00 AM 0.00 0.0 M M M
3/28/2012 7:00 AM 0.00 0.0 M M M
3/29/2012 7:00 AM 0.00 0.0 M M M
3/30/2012 8:35 AM 0.51 M M M M Thunder at 5, and again from 7-7:40.
3/31/2012 7:00 AM 0.00 0.0 M M M
4/1/2012 7:00 AM 0.03 M M M M
4/2/2012 7:00 AM 0.00 0.0 M M M
4/3/2012 7:00 AM 0.00 0.0 M M M
4/4/2012 7:00 AM 0.00 0.0 M M M
4/5/2012 7:00 AM 0.00 0.0 M M M
4/6/2012 7:00 AM 0.00 0.0 M M M
4/7/2012 7:00 AM T M M M M
4/8/2012 7:00 AM 0.00 0.0 M M M
4/9/2012 7:00 AM 0.03 M M M M
4/10/2012 7:00 AM 0.00 0.0 M M M
4/11/2012 7:00 AM 0.00 0.0 M M M
4/12/2012 7:00 AM 0.00 0.0 M M M
4/13/2012 7:00 AM 0.00 0.0 M M M
4/14/2012 7:00 AM 0.00 0.0 M M M
4/15/2012 7:00 AM 0.56 M M M M Frequent thunder and lightning.
4/16/2012 7:00 AM 0.37 M M M M
4/17/2012 7:00 AM 0.00 0.0 M M M
4/18/2012 7:00 AM 0.00 0.0 M M M
4/19/2012 7:00 AM 0.05 M M M M
4/20/2012 7:00 AM 0.00 0.0 M M M
4/21/2012 7:00 AM 0.00 0.0 M M M
4/22/2012 7:00 AM 0.00 0.0 M M M
4/23/2012 7:00 AM 0.00 0.0 M M M
4/24/2012 7:00 AM 0.00 0.0 M M M
4/25/2012 8:45 AM 0.04 M M M M
4/26/2012 7:00 AM 0.00 0.0 M M M
4/27/2012 7:00 AM 0.00 0.0 M M M
4/28/2012 10:00 PM 0.28 M M M M
4/29/2012 7:00 AM 0.00 0.0 M M M
4/30/2012 9:00 AM 0.34 M M M M
5/1/2012 7:00 AM 0.00 0.0 M M M
5/2/2012 7:00 AM 0.18 M M M M
5/3/2012 7:00 AM 0.02 M M M M
5/4/2012 7:00 AM 0.71 M M M M Thunderstorms most of the night, though sub-severe with no hail to report. 0.20" during the day, and 0.51" after about 5 PM.
5/5/2012 7:00 AM 0.00 0.0 M M M
5/6/2012 7:00 AM 0.00 0.0 M M M
5/7/2012 8:00 AM 1.54 M M M M See associated significant weather report. Lots of lightning, thunder, but no severe.
5/8/2012 7:00 AM 0.16 M M M M
5/9/2012 7:00 AM 0.00 0.0 M M M
5/10/2012 7:00 AM 0.04 M M M M
5/11/2012 7:00 AM 0.00 0.0 M M M
5/12/2012 7:00 AM 0.00 0.0 M M M
5/13/2012 7:00 AM 0.07 M M M M
5/14/2012 7:00 AM 0.00 0.0 M M M
5/15/2012 7:00 AM 0.00 0.0 M M M
5/16/2012 7:00 AM 0.11 M M M M No severe weather to report.
5/17/2012 7:00 AM 0.00 0.0 M M M
5/18/2012 7:00 AM 0.00 0.0 M M M
5/19/2012 7:00 AM 0.00 0.0 M M M
5/20/2012 7:00 AM 0.00 0.0 M M M
5/21/2012 7:00 AM T M M M M
5/22/2012 7:00 AM 0.00 0.0 M M M
5/23/2012 7:00 AM 0.00 0.0 M M M
5/24/2012 7:00 AM 0.00 0.0 M M M
5/25/2012 7:00 AM 0.00 0.0 M M M
5/26/2012 7:00 AM 0.00 0.0 M M M
5/27/2012 7:00 AM 0.00 0.0 M M M
5/28/2012 7:00 AM 0.00 0.0 M M M
5/29/2012 7:00 AM T M M M M
5/31/2012 8:40 AM 0.05 M M M M
6/1/2012 8:40 AM 1.10 M M M M Light showery rain, all day long.
6/2/2012 7:00 AM 0.00 0.0 M M M
6/3/2012 7:00 AM 0.00 0.0 M M M
6/4/2012 7:00 AM T M M M M A sprinkle or two.
6/5/2012 7:00 AM 0.00 0.0 M M M
6/6/2012 7:00 AM 0.00 0.0 M M M
6/7/2012 7:00 AM 0.00 0.0 M M M
6/8/2012 7:00 AM 0.00 0.0 M M M
6/9/2012 7:00 AM 0.00 0.0 M M M
6/10/2012 7:00 AM 0.00 0.0 M M M
6/11/2012 7:00 AM 0.00 0.0 M M M
6/12/2012 7:00 AM 0.00 0.0 M M M
6/13/2012 7:00 AM 0.00 0.0 M M M
6/14/2012 7:00 AM 0.00 0.0 M M M
6/15/2012 7:00 AM 0.00 0.0 M M M
6/16/2012 7:00 AM 0.00 0.0 M M M
6/17/2012 7:00 AM 0.46 M M M M Not enough, but better than nothing.
6/18/2012 7:00 AM 0.00 0.0 M M M
6/19/2012 7:00 AM 0.00 0.0 M M M
6/20/2012 7:00 AM 0.00 0.0 M M M
6/21/2012 7:00 AM 0.00 0.0 M M M
6/22/2012 7:00 AM 0.06 M M M M
6/23/2012 7:00 AM 0.00 0.0 M M M
6/24/2012 7:00 AM 0.00 0.0 M M M
6/25/2012 7:00 AM 0.00 0.0 M M M
6/26/2012 7:00 AM 0.00 0.0 M M M
6/27/2012 7:00 AM 0.00 0.0 M M M
6/28/2012 7:00 AM 0.00 0.0 M M M
6/29/2012 7:00 AM 0.00 0.0 M M M Thunder and high winds... but no rain.
6/30/2012 7:00 AM 0.35 M M M M Lots of thunder, no severe. Humid and wet outside.
7/1/2012 7:00 AM 0.00 0.0 M M M
7/2/2012 7:00 AM 1.62 M M M M Hurricane-force winds leading to a prolonged power outage.
7/3/2012 7:00 AM 0.00 0.0 M M M
7/4/2012 7:00 AM 0.00 0.0 M M M
7/5/2012 7:00 AM 0.00 0.0 M M M
7/6/2012 7:00 AM 0.00 0.0 M M M
7/7/2012 7:00 AM 0.00 0.0 M M M
7/8/2012 7:00 AM 0.00 0.0 M M M
7/9/2012 7:00 AM 0.00 0.0 M M M
7/10/2012 7:00 AM 0.00 0.0 M M M
7/11/2012 7:00 AM 0.00 0.0 M M M
7/12/2012 7:00 AM 0.00 0.0 M M M
7/13/2012 7:00 AM 0.00 0.0 M M M
7/14/2012 7:30 AM 1.39 M M M M Heavy rain over an hour period yesterday afternoon, with plenty of lightning and thunder. No flooding observed besides a bit of street flooding.
7/15/2012 7:00 AM 0.03 M M M M
7/16/2012 7:00 AM 0.00 0.0 M M M
7/17/2012 7:00 AM 0.00 0.0 M M M
7/18/2012 7:00 AM 0.00 0.0 M M M
7/19/2012 7:00 AM 1.49 M M M M 0.42" observed after initial round of thunderstorms (after 10:15 PM). No flooding, although at this point this station is almost an inch above the July normal for ORD!
7/20/2012 7:00 AM 0.00 0.0 M M M
7/21/2012 7:00 AM 0.00 0.0 M M M
7/22/2012 7:00 AM 0.00 0.0 M M M
7/23/2012 7:00 AM 0.03 M M M M Some light showers in the evening hours.
7/24/2012 7:10 AM 0.32 M M M M Ongoing light rain. This line was going too quick to drop significant amounts of rainfall. Still have power, though.
7/25/2012 7:00 AM 0.05 M M M M
7/26/2012 7:00 AM 0.33 M M M M Thunder at 2:30, but not much rain at that point. Not sure when the rest fell.
7/27/2012 8:00 AM 0.03 M M M M
7/28/2012 7:00 AM 0.00 0.0 M M M
7/29/2012 7:00 AM 0.00 0.0 M M M
7/30/2012 7:00 AM T M M M M
7/31/2012 7:00 AM 0.15 M M M M
8/1/2012 7:00 AM 0.00 0.0 M M M
8/2/2012 7:00 AM 0.00 0.0 M M M
8/3/2012 7:00 AM 0.00 0.0 M M M
8/4/2012 7:00 AM 0.00 0.0 M M M
8/5/2012 7:00 AM 0.45 M M M M 50-55 mph winds, but nothing severe.
8/6/2012 7:00 AM 0.00 0.0 M M M
8/7/2012 7:00 AM 0.00 0.0 M M M
8/8/2012 7:00 AM 0.00 0.0 M M M
8/9/2012 7:00 AM 0.02 M M M M
8/10/2012 7:00 AM 0.12 M M M M
8/11/2012 7:00 AM 0.00 0.0 M M M
8/12/2012 7:00 AM 0.00 0.0 M M M
8/13/2012 7:00 AM 0.13 M M M M
8/14/2012 7:00 AM 0.12 M M M M Same as yesterday.
8/15/2012 7:00 AM 0.02 M M M M
8/16/2012 7:00 AM 0.00 0.0 M M M
8/17/2012 7:00 AM 0.29 M M M M A good deal of thunder, but not that much rain.
8/18/2012 7:00 AM 0.00 0.0 M M M
8/19/2012 7:00 AM 0.00 0.0 M M M
8/20/2012 7:00 AM 0.00 0.0 M M M
8/21/2012 7:00 AM 0.25 M M M M Fog.
8/22/2012 7:00 AM 0.00 0.0 M M M
8/23/2012 8:30 AM 0.08 M M M M
8/24/2012 7:00 AM 0.00 0.0 M M M
8/25/2012 7:00 AM 0.00 0.0 M M M
8/26/2012 7:00 AM 0.00 0.0 M M M
8/27/2012 7:00 AM 1.12 M M M M Heavy, efficient rain showers.
8/28/2012 7:00 AM 0.00 0.0 M M M
8/29/2012 7:00 AM 0.00 0.0 M M M
8/30/2012 7:00 AM 0.00 0.0 M M M
8/31/2012 7:00 AM 0.00 0.0 M M M
9/1/2012 7:00 AM 0.00 0.0 M M M
9/2/2012 7:00 AM 0.11 M M M M Very disappointing.
9/3/2012 7:00 AM 0.01 M M M M
9/4/2012 7:00 AM 0.01 M M M M Overnight showers
9/5/2012 7:00 AM 0.31 M M M M Strong, gusty winds. Some thunder but not as much rain as expected.
9/6/2012 7:00 AM 0.00 0.0 M M M
9/7/2012 8:00 AM 0.10 M M M M Light rain at this time.
9/8/2012 10:00 AM 0.08 M M M M Another disappointing day.
9/9/2012 7:00 AM 0.24 M M M M Better!
9/10/2012 7:00 AM 0.00 0.0 M M M
9/11/2012 7:00 AM 0.00 0.0 M M M
9/12/2012 7:00 AM 0.00 0.0 M M M
9/13/2012 7:00 AM 0.00 0.0 M M M
9/14/2012 7:00 AM 0.19 M M M M
9/15/2012 7:00 AM 0.00 0.0 M M M
9/16/2012 7:00 AM 0.00 0.0 M M M
9/17/2012 7:00 AM 0.00 0.0 M M M
9/18/2012 7:00 AM 0.27 M M M M Some thunder.
9/19/2012 7:00 AM 0.00 0.0 M M M
9/20/2012 7:00 AM 0.00 0.0 M M M
9/21/2012 7:00 AM 0.00 0.0 M M M
9/22/2012 8:30 AM 0.23 M M M M After the last of the morning showers. Now it's sunny, windy but cold (45.5° F)
9/23/2012 7:00 AM 0.00 0.0 M M M
9/24/2012 7:00 AM 0.00 0.0 M M M
9/25/2012 7:00 AM 0.00 0.0 M M M
9/26/2012 7:00 AM 0.00 0.0 M M M
9/27/2012 7:00 AM 0.00 0.0 M M M
9/28/2012 7:00 AM 0.00 0.0 M M M
9/29/2012 7:00 AM 0.00 0.0 M M M
9/30/2012 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
11/10/2011 11/11/2011 8:00 AM 2 0.02 M M
1/17/2012 1/18/2012 8:15 AM 2 0.14 1.5 M 0.1" new snow measured yesterday.



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
5/6/2012 12:29 AM 1/4" Pea Size Rice Rice Hard|Clear Ice 1 1min no damage Intermittent True After rain After smaller hail vertical
6/28/2012 5:25 AM This is a conservative estimate... observing from the window at 41.99545, -88.20077. Very occasional, certainly not continuous amounts of hail, but pretty decent sized bits nonetheless. 1" Quarter Size 3/8" 1/4" Pea Size Mixed|Clear Ice 10 2min no damage.minor leaf damage Intermittent True After rain After smaller hail