Station Overview Station Location
Station Number IL-CK-87 Latitude 42.082221
Station Name Arlington Heights 1.3 SW Longitude -88.001904
County Cook Elevation (ft) 722



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 2.97 1.03 31 0.81 24 0.22 7 2 5 0 0.0 0 0
Nov 10 3.01 1.63 30 0.24 6 1.39 24 5 1 0 0.0 0 0
Dec 10 2.24 1.70 31 0.47 17 1.23 14 4 3 3 4.2 3 1
Jan 11 1.74 4.56 31 0.27 17 4.29 14 3 3 5 3.2 3 2
Feb 11 1.68 4.51 28 4.30 20 0.21 8 2 7 1 21.8 6 1
March 11 2.30 2.61 31 0.79 19 1.82 12 5 3 0 0.0 0 0
April 11 3.42 5.48 30 2.43 19 3.05 11 5 8 0 0.0 0 0
May 11 4.06 5.67 31 2.49 16 3.18 15 5 3 1 0.0 0 0
June 11 4.02 3.37 30 2.90 23 0.47 7 3 6 2 0.0 0 0
July 11 3.83 9.48 31 9.03 29 0.45 2 1 6 0 0.0 0 0
Aug 11 4.50 4.18 31 3.29 26 0.89 5 2 5 0 0.0 0 0
Sept 11 3.40 3.10 30 0.09 14 3.01 16 5 2 1 0.0 0 0
Water Year Totals: 37.17" 47.32" 365 days 27.11" 230 20.21" 135 days 42 52 days 13 days 29.2" 12 days 4 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 0.11
10/3/2010 0.11
10/4/2010 0.00
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 **
10/14/2010 0.02
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 **
10/21/2010 **
10/22/2010 **
10/23/2010 **
10/24/2010 0.20
10/25/2010 0.25
10/26/2010 0.23
10/27/2010 0.11
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 **
11/4/2010 **
11/5/2010 **
11/6/2010 **
11/7/2010 **
11/8/2010 **
11/9/2010 **
11/10/2010 0.02
11/11/2010 **
11/12/2010 0.17
11/13/2010 **
11/14/2010 **
11/15/2010 0.09
11/16/2010 0.00
11/17/2010 0.00
11/18/2010 **
11/19/2010 **
11/20/2010 **
11/21/2010 **
11/22/2010 **
11/23/2010 **
11/24/2010 0.65
11/25/2010 0.24
11/26/2010 0.00
11/27/2010 **
11/28/2010 **
11/29/2010 **
11/30/2010 0.46
12/1/2010 T
12/2/2010 T
12/3/2010 0.00
12/4/2010 0.33
12/5/2010 **
12/6/2010 **
12/7/2010 **
12/8/2010 T
12/9/2010 0.00
12/10/2010 0.05
12/11/2010 0.00
12/12/2010 **
12/13/2010 0.47
12/14/2010 0.00
12/15/2010 0.00
12/16/2010 0.00
12/17/2010 0.09
12/18/2010 0.00
12/19/2010 **
12/20/2010 **
12/21/2010 0.35
12/22/2010 T
12/23/2010 0.00
12/24/2010 0.00
12/25/2010 **
12/26/2010 0.41
12/27/2010 0.00
12/28/2010 0.00
12/29/2010 **
12/30/2010 **
12/31/2010 **
Day of YearDaily PrcpMultiday Prcp
1/1/2011 0.49
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 0.01
1/9/2011 0.00
1/10/2011 0.00
1/11/2011 0.17
1/12/2011 0.09
1/13/2011 T
1/14/2011 0.00
1/15/2011 **
1/16/2011 **
1/17/2011 **
1/18/2011 **
1/19/2011 **
1/20/2011 **
1/21/2011 **
1/22/2011 2.80
1/23/2011 0.00
1/24/2011 **
1/25/2011 **
1/26/2011 **
1/27/2011 **
1/28/2011 1.00
1/29/2011 0.00
1/30/2011 T
1/31/2011 T
2/1/2011 0.07
2/2/2011 2.62
2/3/2011 0.00
2/4/2011 0.00
2/5/2011 0.00
2/6/2011 0.17
2/7/2011 **
2/8/2011 **
2/9/2011 **
2/10/2011 0.06
2/11/2011 T
2/12/2011 0.00
2/13/2011 0.00
2/14/2011 0.00
2/15/2011 0.00
2/16/2011 0.00
2/17/2011 0.00
2/18/2011 0.00
2/19/2011 0.00
2/20/2011 0.00
2/21/2011 1.18
2/22/2011 **
2/23/2011 **
2/24/2011 0.15
2/25/2011 0.07
2/26/2011 0.07
2/27/2011 0.12
2/28/2011 **
3/1/2011 0.20
3/2/2011 0.00
3/3/2011 0.00
3/4/2011 0.07
3/5/2011 0.70
3/6/2011 0.02
3/7/2011 0.00
3/8/2011 0.00
3/9/2011 **
3/10/2011 0.39
3/11/2011 0.00
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 **
3/20/2011 **
3/21/2011 0.64
3/22/2011 **
3/23/2011 0.52
3/24/2011 **
3/25/2011 **
3/26/2011 **
3/27/2011 0.07
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 0.19
4/3/2011 0.00
4/4/2011 0.19
4/5/2011 0.00
4/6/2011 0.00
4/7/2011 0.00
4/8/2011 **
4/9/2011 0.76
4/10/2011 **
4/11/2011 **
4/12/2011 0.03
4/13/2011 0.00
4/14/2011 0.00
4/15/2011 0.00
4/16/2011 0.70
4/17/2011 0.10
4/18/2011 **
4/19/2011 0.54
4/20/2011 1.04
4/21/2011 0.00
4/22/2011 **
4/23/2011 0.87
4/24/2011 0.00
4/25/2011 0.02
4/26/2011 **
4/27/2011 0.85
4/28/2011 0.15
4/29/2011 0.04
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 **
5/7/2011 0.01
5/8/2011 0.00
5/9/2011 0.00
5/10/2011 0.00
5/11/2011 0.00
5/12/2011 0.60
5/13/2011 **
5/14/2011 **
5/15/2011 0.44
5/16/2011 **
5/17/2011 **
5/18/2011 0.06
5/19/2011 T
5/20/2011 0.00
5/21/2011 0.00
5/22/2011 **
5/23/2011 0.57
5/24/2011 **
5/25/2011 **
5/26/2011 **
5/27/2011 **
5/28/2011 2.10
5/29/2011 0.06
5/30/2011 1.83
5/31/2011 0.00
6/1/2011 0.00
6/2/2011 0.00
6/3/2011 0.00
6/4/2011 0.00
6/5/2011 0.20
6/6/2011 0.00
6/7/2011 0.00
6/8/2011 0.00
6/9/2011 1.42
6/10/2011 0.37
6/11/2011 **
6/12/2011 **
6/13/2011 0.03
6/14/2011 0.00
6/15/2011 0.38
6/16/2011 0.51
6/17/2011 0.00
6/18/2011 0.00
6/19/2011 **
6/20/2011 0.08
6/21/2011 T
6/22/2011 **
6/23/2011 0.36
6/24/2011 T
6/25/2011 0.00
6/26/2011 0.00
6/27/2011 0.02
6/28/2011 0.00
6/29/2011 0.00
6/30/2011 0.00
Day of YearDaily PrcpMultiday Prcp
7/1/2011 0.00
7/2/2011 0.00
7/3/2011 0.00
7/4/2011 0.00
7/5/2011 0.00
7/6/2011 0.00
7/7/2011 0.00
7/8/2011 0.00
7/9/2011 0.00
7/10/2011 0.00
7/11/2011 **
7/12/2011 0.45
7/13/2011 0.00
7/14/2011 0.00
7/15/2011 0.00
7/16/2011 0.00
7/17/2011 0.00
7/18/2011 0.00
7/19/2011 0.00
7/20/2011 0.00
7/21/2011 0.00
7/22/2011 0.24
7/23/2011 7.25
7/24/2011 0.06
7/25/2011 0.12
7/26/2011 0.00
7/27/2011 0.00
7/28/2011 1.00
7/29/2011 0.36
7/30/2011 0.00
7/31/2011 0.00
8/1/2011 0.00
8/2/2011 0.00
8/3/2011 0.64
8/4/2011 0.00
8/5/2011 0.00
8/6/2011 **
8/7/2011 **
8/8/2011 0.44
8/9/2011 **
8/10/2011 0.45
8/11/2011 0.00
8/12/2011 0.00
8/13/2011 0.00
8/14/2011 0.78
8/15/2011 0.00
8/16/2011 0.00
8/17/2011 0.00
8/18/2011 0.00
8/19/2011 0.00
8/20/2011 0.00
8/21/2011 1.21
8/22/2011 0.00
8/23/2011 0.00
8/24/2011 0.53
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 0.13
9/1/2011 0.00
9/2/2011 0.00
9/3/2011 0.00
9/4/2011 0.04
9/5/2011 0.00
9/6/2011 0.00
9/7/2011 0.00
9/8/2011 0.00
9/9/2011 **
9/10/2011 **
9/11/2011 **
9/12/2011 0.17
9/13/2011 **
9/14/2011 **
9/15/2011 **
9/16/2011 0.02
9/17/2011 **
9/18/2011 **
9/19/2011 0.72
9/20/2011 0.00
9/21/2011 0.00
9/22/2011 0.00
9/23/2011 0.00
9/24/2011 0.05
9/25/2011 T
9/26/2011 **
9/27/2011 1.64
9/28/2011 **
9/29/2011 **
9/30/2011 0.46



Observation Date Observation Time Precipitation Snowfall Snowfall SWE Snow Depth Snow SWE Notes
10/1/2010 7:00 AM 0.00 0.0 M M M
10/2/2010 9:52 AM 0.11 0.0 0.00 0.0 0.00
10/3/2010 10:34 AM 0.11 0.0 0.00 0.0 0.00
10/4/2010 7:00 AM 0.00 0.0 M M M
10/5/2010 7:45 AM 0.00 0.0 0.00 0.0 0.00 Observed frost for the first time this season. At 0745 CDT, noticed large parks with heavy coating of frost about one mile ESE from reporting station.
10/6/2010 7:00 AM 0.00 0.0 M M M
10/7/2010 7:00 AM 0.00 0.0 M M M
10/8/2010 7:00 AM 0.00 0.0 M M M
10/9/2010 7:00 AM 0.00 0.0 M M M
10/10/2010 7:00 AM 0.00 0.0 M M M
10/11/2010 7:00 AM 0.00 0.0 M M M
10/12/2010 7:00 AM 0.00 0.0 M M M
10/15/2010 7:00 AM 0.00 0.0 M M M
10/16/2010 7:00 AM 0.00 0.0 M M M
10/17/2010 7:00 AM 0.00 0.0 M M M
10/18/2010 7:00 AM 0.00 0.0 M M M
10/19/2010 7:00 AM 0.00 0.0 M M M
10/25/2010 7:46 AM 0.25 0.0 0.00 0.0 0.00
10/26/2010 7:30 AM 0.23 0.0 0.00 0.0 0.00 Still raining.
10/27/2010 9:11 AM 0.11 0.0 0.00 0.0 0.00
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 7:00 AM 0.00 0.0 M M M
10/31/2010 7:00 AM 0.00 0.0 M M M
11/1/2010 7:00 AM 0.00 0.0 M M M
11/2/2010 7:00 AM 0.00 0.0 M M M
11/16/2010 7:00 AM 0.00 0.0 M M M
11/17/2010 7:00 AM 0.00 0.0 M M M
11/25/2010 9:50 AM 0.24 0.0 0.00 0.0 0.00
11/26/2010 7:00 AM 0.00 0.0 M M M
12/1/2010 9:30 AM T T T T T Snow flurries at this time. Snow on paved surfaces is not melting and these surfaces have about a 50% coverage of flakes but no measurable accumulation. Snow coverage on grass is settling deep below the top of the grass blades.
12/2/2010 7:38 AM T T T 0.0 0.00 No precip in rain gauge, but did observe flurries after yesterday's report which left a dusting on the ground including paved surfaces. It is all gone this morning.
12/3/2010 7:00 AM 0.00 0.0 M M M
12/4/2010 11:20 AM 0.33 3.0 0.33 3.0 0.33 First measurable snow (i.e. more than a "trace") at this station this season. Still snowing lightly at this time.
12/9/2010 7:40 AM 0.00 0.0 0.00 M M
12/10/2010 7:25 AM 0.05 0.6 M M M
12/11/2010 9:45 AM 0.00 0.0 M M M
12/14/2010 8:05 AM 0.00 0.0 M M M
12/15/2010 8:55 AM 0.00 0.0 M M M
12/16/2010 7:40 AM 0.00 0.0 M M M
12/17/2010 6:55 AM 0.09 0.6 0.09 M M Measured 0.6" new snow on snowboard, but rain gauge was dry. Then took core sample from the new snow which yielded 0.09" melted precipitation.
12/18/2010 7:00 AM 0.00 0.0 M M M
12/22/2010 8:00 AM T T M M M Very light snowflakes falling at time of reading. Nothing measurable.
12/23/2010 7:00 AM 0.00 0.0 M M M
12/24/2010 7:00 AM 0.00 0.0 M M M
12/27/2010 7:00 AM 0.00 0.0 M M M
12/28/2010 7:00 AM 0.00 0.0 M M M
1/2/2011 8:00 AM 0.00 0.0 0.00 0.0 0.00
1/3/2011 7:00 AM 0.00 0.0 M M M
1/4/2011 7:28 AM 0.00 0.0 0.00 0.0 0.00
1/5/2011 7:35 AM 0.00 0.0 0.00 0.0 0.00
1/6/2011 10:30 AM T T M T M Observed very light flurries at approximately 1805CST/0005Z while running an errand close to observation point. Dusting of accumulation on some paved surfaces at observation time, not enough to measure but sufficient to leave tire tracks.
1/7/2011 7:30 AM T T M M M Dusting of snow covering paved surfaces.
1/8/2011 11:45 AM 0.01 0.2 M M M Melted gauge precipitation was barely measurable at 0.01".
1/9/2011 8:10 AM 0.00 0.0 M M M
1/10/2011 7:00 AM 0.00 0.0 M M M
1/11/2011 11:15 AM 0.17 2.3 0.17 2.3 0.17 Still snowing at observation time.
1/12/2011 8:45 AM 0.09 0.7 0.09 2.5 M Yesterday's observation and report was made at 1115CST/1715Z, so today's report is for less than 24 hours. There is no precipitation occurring at this time.
1/13/2011 7:30 AM T T T M M A few snowflakes were falling at observation time, but no new accumulation.
1/14/2011 9:00 AM 0.00 0.0 0.00 M M
1/23/2011 7:00 AM 0.00 0.0 M M M
1/29/2011 7:00 AM 0.00 0.0 M M M
1/30/2011 9:40 AM T T M M M Driveway and walks are icy and it is snowing very lightly, just a few pellets.
1/31/2011 7:10 AM T T M M M Just a few snowflakes falling at observation time. No accumulation.
2/1/2011 7:45 AM 0.07 0.7 0.07 M M Still snowing lightly.
2/2/2011 11:30 AM 2.62 17.0 2.62 17.0 M Measurement taken at end of Blizzard 2011. Extensive drifting made accurate measuring nearly impossible. Average of multiple measurements was about 17". Melted core precipitation was 2.62" which is not consistent with reported ratios of 15:1. Still, that was the melted core from the snowboard and the 17" reading.
2/3/2011 8:00 AM 0.00 0.0 M M M No new accumulation since Blizzard 2011 ended at this location about 22 hours ago.
2/4/2011 7:30 AM 0.00 0.0 M M M
2/5/2011 7:00 AM 0.00 0.0 M M M
2/6/2011 10:00 AM 0.17 2.5 M M M Flurries have stopped (at least for now).
2/11/2011 10:30 AM T T M M M Light flurries (just a few snowflakes) at observation time.
2/12/2011 7:00 AM 0.00 0.0 M M M
2/13/2011 7:00 AM 0.00 0.0 M M M
2/14/2011 7:00 AM 0.00 0.0 M M M
2/15/2011 7:00 AM 0.00 0.0 M M M
2/16/2011 7:00 AM 0.00 0.0 M M M
2/17/2011 7:00 AM 0.00 0.0 M M M
2/18/2011 7:00 AM 0.00 0.0 M M M
2/19/2011 7:00 AM 0.00 0.0 M M M
2/20/2011 7:00 AM 0.00 0.0 M M M
2/21/2011 7:56 AM 1.18 0.0 0.00 0.0 0.00
2/25/2011 8:25 AM 0.07 0.6 0.07 M M
2/26/2011 8:20 AM 0.07 0.8 0.07 M M
2/27/2011 9:30 AM 0.12 0.2 0.12 M M There is some uncertainty in today's observation because yesterday's precipitation started as light snow followed by drizzle and freezing rain. The snow had a frozen top-layer. Precip was measured from a core sample of new snow on the snowboard.
3/2/2011 7:00 AM 0.00 0.0 M M M
3/3/2011 6:45 AM 0.00 0.0 0.00 0.0 0.00
3/4/2011 9:00 AM 0.07 0.0 0.00 0.0 0.00 Still raining lightly at observation time.
3/5/2011 9:08 AM 0.70 T M T M Light snow flurries at observation time.
3/6/2011 9:00 AM 0.02 M M M M Dusting of snow on lawn.
3/7/2011 7:00 AM 0.00 0.0 M M M
3/8/2011 7:00 AM 0.00 0.0 M M M
3/11/2011 7:00 AM 0.00 0.0 M M M
3/12/2011 7:00 AM 0.00 0.0 M M M
3/13/2011 8:00 AM 0.00 0.0 0.00 0.0 0.00
3/14/2011 7:00 AM 0.00 0.0 M M M
3/15/2011 7:00 AM 0.00 0.0 M M M
3/16/2011 7:00 AM 0.00 0.0 M M M
3/17/2011 7:00 AM 0.00 0.0 M M M
3/18/2011 7:00 AM 0.00 0.0 M M M
3/28/2011 7:00 AM 0.00 0.0 0.00 0.0 0.00
3/29/2011 7:00 AM 0.00 0.0 M M M
3/30/2011 7:00 AM 0.00 0.0 M M M
3/31/2011 7:00 AM 0.00 0.0 M M M
4/1/2011 7:00 AM 0.00 0.0 M M M
4/2/2011 9:25 AM 0.19 0.0 0.00 0.0 0.00
4/3/2011 7:00 AM 0.00 0.0 M M M
4/4/2011 7:30 AM 0.19 0.0 0.00 0.0 0.00 Yes, that 0.19" observation is correct. It's only coincidental that two identical readings were taken two days apart.
4/5/2011 7:35 AM 0.00 0.0 0.00 0.0 0.00
4/6/2011 7:25 AM 0.00 0.0 0.00 0.0 0.00
4/7/2011 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 9:45 AM 0.70 0.0 M 0.0 M
4/17/2011 8:50 AM 0.10 0.0 M 0.0 M
4/20/2011 7:34 AM 1.04 0.0 M 0.0 M
4/21/2011 7:00 AM 0.00 0.0 M M M
4/24/2011 7:00 AM 0.00 0.0 M M M
4/25/2011 7:29 AM 0.02 0.0 0.00 0.0 0.00
4/28/2011 7:59 AM 0.15 0.0 M M M
4/29/2011 6:30 AM 0.04 0.0 M M M
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
5/8/2011 7:00 AM 0.00 0.0 M M M
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 6:55 AM 0.60 0.0 M 0.0 M Measured 0.60" precipitation from multiple thunderstorms yesterday afternoon, evening, and this morning. Also observed pea-sized hail with some of these storms.
5/19/2011 7:45 AM T 0.0 M M M
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
5/29/2011 9:30 AM 0.06 0.0 M M M
5/30/2011 9:00 AM 1.83 0.0 M M M
5/31/2011 7:00 AM 0.00 0.0 M M M
6/1/2011 7:25 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 0.00 0.0 M M M
6/4/2011 7:00 AM 0.00 0.0 M M M
6/5/2011 8:30 AM 0.20 0.0 M M M
6/6/2011 8:40 AM 0.00 0.0 M M M
6/7/2011 7:15 AM 0.00 0.0 M M M
6/8/2011 7:40 AM 0.00 0.0 M M M
6/9/2011 9:30 AM 1.42 0.0 M M M
6/10/2011 8:33 AM 0.37 0.0 M M M
6/14/2011 7:00 AM 0.00 0.0 M M M
6/15/2011 9:31 AM 0.38 0.0 M M M
6/16/2011 8:30 AM 0.51 0.0 M M M
6/17/2011 7:00 AM 0.00 0.0 M M M
6/18/2011 7:00 AM 0.00 0.0 M M M
6/21/2011 7:20 AM T 0.0 M M M Observed just a few drops of rain around 1845 CDT/2345Z on 20 June.
6/24/2011 5:43 AM T 0.0 M M M Noticed just a few minutes of very light rain around 1800 CDT/2300Z as I was firing up the BBQ.
6/25/2011 7:00 AM 0.00 0.0 M M M
6/26/2011 7:00 AM 0.00 0.0 M M M
6/27/2011 8:40 AM 0.02 0.0 M M M Raining at observation time.
6/28/2011 7:00 AM 0.00 0.0 M M M
6/29/2011 7:00 AM 0.00 0.0 M M M
6/30/2011 7:00 AM 0.00 0.0 M M M
7/1/2011 7:00 AM 0.00 0.0 M M M
7/2/2011 9:03 AM 0.00 0.0 M M M
7/3/2011 7:00 AM 0.00 0.0 M M M
7/4/2011 7:00 AM 0.00 0.0 M M M
7/5/2011 7:00 AM 0.00 0.0 M M M
7/6/2011 7:00 AM 0.00 0.0 M M M
7/7/2011 7:00 AM 0.00 0.0 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
7/13/2011 7:00 AM 0.00 0.0 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 0.00 0.0 M M M
7/18/2011 7:00 AM 0.00 0.0 M M M
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 8:45 AM 0.24 M M M M This reading was at observation time (0845 CDT/1345Z), however another 0.86 fell in a 30-min period beginning at 0925CDT/1425Z which will be in tomorrow's report.
7/23/2011 8:30 AM 7.25 M M 0.0 M Observed a line of leaves half-way across next-door neighbor's front lawn indicating flood waters on street came up that high at some point overnight.
7/24/2011 7:24 AM 0.06 0.0 M M M
7/25/2011 9:55 AM 0.12 0.0 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 8:47 AM 1.00 M M M M Yes- that's 1.00" measured- to the drop.
7/29/2011 8:30 AM 0.36 0.0 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 8:30 AM 0.00 0.0 M M M
8/3/2011 8:25 AM 0.64 0.0 M M M The lawn has not been this green in early-August in many years.
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
8/11/2011 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 9:07 AM 0.00 0.0 M M M
8/14/2011 9:18 AM 0.78 0.0 M M M Of the 0.78" measured precip, 0.52" fell in a 15 minute period Saturday afternoon.
8/15/2011 7:00 AM 0.00 0.0 M M M
8/16/2011 7:00 AM 0.00 0.0 M M M
8/17/2011 7:00 AM 0.00 0.0 M M M
8/18/2011 7:00 AM 0.00 0.0 M M M
8/19/2011 7:00 AM 0.00 0.0 M M M
8/20/2011 7:10 AM 0.00 0.0 M M M
8/21/2011 9:00 AM 1.21 0.0 M M M
8/22/2011 7:35 AM 0.00 0.0 M M M
8/23/2011 7:10 AM 0.00 0.0 M M M
8/24/2011 7:00 AM 0.53 0.0 M M M
8/25/2011 8:00 AM 0.00 0.0 M M M
8/26/2011 8:00 AM 0.00 0.0 M M M
8/27/2011 8:00 AM 0.00 0.0 M M M
8/28/2011 8:00 AM 0.00 0.0 M M M
8/29/2011 8:00 AM 0.00 0.0 M M M
8/30/2011 8:00 AM 0.00 0.0 M M M
8/31/2011 6:58 AM 0.13 0.0 M M M
9/1/2011 8:00 AM 0.00 0.0 M M M
9/2/2011 8:00 AM 0.00 0.0 M M M
9/3/2011 8:00 AM 0.00 0.0 M M M
9/4/2011 9:30 AM 0.04 0.0 M M M
9/5/2011 8:00 AM 0.00 0.0 M M M
9/6/2011 7:45 AM 0.00 0.0 M M M
9/7/2011 8:00 AM 0.00 0.0 M M M
9/8/2011 8:00 AM 0.00 0.0 M M M
9/20/2011 7:45 AM 0.00 0.0 M M M
9/21/2011 7:42 AM 0.00 0.0 0.00 M M
9/22/2011 7:40 AM 0.00 0.0 M M M
9/23/2011 7:50 AM 0.00 0.0 M M M
9/24/2011 9:55 AM 0.05 0.0 M M M
9/25/2011 9:30 AM T 0.0 M M M Observed just light rain yesterday, nothing measurable, but required windshield wipers to be on for a few minutes.



Start Date End Date & Time Duration in Days Precipitation Snow Depth Snow Depth SWE Notes
10/13/2010 10/14/2010 8:10 AM 2 0.02 0.0 0.00
10/20/2010 10/24/2010 8:30 AM 5 0.20 0.0 0.00
11/3/2010 11/10/2010 8:15 AM 8 0.02 0.0 0.00
11/11/2010 11/12/2010 7:02 AM 2 0.17 M M
11/13/2010 11/15/2010 6:45 AM 3 0.09 0.0 0.00
11/18/2010 11/24/2010 8:45 AM 7 0.65 0.0 0.00
11/27/2010 11/30/2010 7:30 AM 4 0.46 0.0 0.00
12/5/2010 12/08/2010 7:30 AM 4 T 2.0 0.22 Observed snow fall during this multiday period, but there was no additional accumulation on the snow board.
12/12/2010 12/13/2010 7:55 AM 2 0.47 M M This measurement was taken from melted ice and snow that accumulated in the rain gauge during this period. A winter storm with high winds and blowing snow likely reduced the accuracy of this measurement. Not able to get a core sample or total depth on ground, but it, too, would be highly inaccurate given the preceding conditions.
12/19/2010 12/21/2010 8:30 AM 3 0.35 M 0.35 Measured 3.00" of new snow during this period. Did not get total depth measurement.
12/25/2010 12/26/2010 11:05 AM 2 0.41 M 0.41 Measured 5.8" new snow with melted core equivalent of 0.41" precipitation.
12/29/2010 1/01/2011 9:45 AM 4 0.49 M M
1/15/2011 1/22/2011 10:00 AM 8 2.80 3.5 0.35
1/24/2011 1/28/2011 8:30 AM 5 1.00 3.0 0.07
2/7/2011 2/10/2011 8:55 AM 4 0.06 0.3 0.06 There is some uncertainty in this multi-day report due to the light snowfall during the period covered by this multi-day report coupled with a snow base of 12-20". Snowboard is buried. Took this measurement from an undisturbed area of the paved driveway.
2/22/2011 2/24/2011 9:50 AM 3 0.15 0.7 0.15 This is a multiday report, but the measurable precipitation and SWE all fell on the 23 Feb period ending with today's observation that would have been reported today if it were a single-day report.
2/28/2011 3/01/2011 7:30 AM 2 0.20 0.0 0.20
3/9/2011 3/10/2011 8:45 AM 2 0.39 0.0 M
3/19/2011 3/21/2011 6:30 AM 3 0.64 0.0 0.64
3/22/2011 3/23/2011 10:21 AM 2 0.52 0.0 0.52
3/24/2011 3/27/2011 7:00 AM 4 0.07 0.0 0.07
4/8/2011 4/09/2011 8:00 AM 2 0.76 0.0 M
4/10/2011 4/12/2011 7:33 AM 3 0.03 0.0 0.03
4/18/2011 4/19/2011 7:33 AM 2 0.54 0.0 M
4/22/2011 4/23/2011 9:30 AM 2 0.87 0.0 M
4/26/2011 4/27/2011 8:25 AM 2 0.85 0.0 M
5/6/2011 5/07/2011 9:30 AM 2 0.01 0.0 M Yes, just a slight amount of precipitation in the rain gauge.
5/13/2011 5/15/2011 9:50 AM 3 0.44 0.0 M
5/16/2011 5/18/2011 8:45 AM 3 0.06 0.0 M
5/22/2011 5/23/2011 7:15 AM 2 0.57 0.0 M
5/24/2011 5/28/2011 8:55 AM 5 2.10 0.0 M
6/11/2011 6/13/2011 8:20 AM 3 0.03 0.0 M
6/19/2011 6/20/2011 8:40 AM 2 0.08 0.0 M
6/22/2011 6/23/2011 9:45 AM 2 0.36 0.0 M
7/11/2011 7/12/2011 7:15 AM 2 0.45 0.0 M
8/6/2011 8/08/2011 9:05 AM 3 0.44 0.0 0.44
8/9/2011 8/10/2011 7:20 AM 2 0.45 0.0 0.45
9/9/2011 9/12/2011 8:30 AM 4 0.17 0.0 0.17
9/13/2011 9/16/2011 6:40 AM 4 0.02 0.0 0.02
9/17/2011 9/19/2011 8:07 AM 3 0.72 0.0 0.72
9/26/2011 9/27/2011 7:58 AM 2 1.64 0.0 M
9/28/2011 9/30/2011 7:20 AM 3 0.46 0.0 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
5/22/2011 3:00 PM Hail and rain lasted for about 3 minutes, then sunshine followed. Measured two round hailstones of representative sample at 3/8" each. NA 3/8" NA Mixed|White Ice 3 1min no damage Continuous False Same time as rain