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 09 2.98 6.51 31 6.51 31 0.00 0 0 22 1 0.0 0 0
Nov 09 3.06 1.82 30 0.59 15 1.23 15 2 3 0 0.0 0 0
Dec 09 2.17 4.76 31 4.71 29 0.05 2 1 18 1 25.4 12 9
Jan 10 1.70 1.31 31 1.31 31 0.00 0 0 8 6 8.9 5 7
Feb 10 1.65 1.45 28 1.45 28 0.00 0 0 11 4 13.6 10 6
March 10 2.25 2.36 31 2.36 31 0.00 0 0 12 1 0.8 2 0
April 10 3.45 3.56 30 3.56 30 0.00 0 0 10 3 0.0 0 0
May 10 4.06 7.10 31 7.10 31 0.00 0 0 15 0 0.0 0 0
June 10 4.03 10.10 30 10.10 30 0.00 0 0 21 0 0.0 0 0
July 10 3.81 10.74 31 10.74 31 0.00 0 0 11 1 0.0 0 0
Aug 10 4.40 5.23 31 5.23 31 0.00 0 0 8 1 0.0 0 0
Sept 10 3.34 3.27 30 3.27 30 0.00 0 0 9 2 0.0 0 0
Water Year Totals: 36.90" 58.21" 365 days 56.93" 348 1.28" 17 days 3 148 days 20 days 48.7" 29 days 22 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
10/1/2009 0.00
10/2/2009 0.70
10/3/2009 0.31
10/4/2009 0.10
10/5/2009 0.00
10/6/2009 0.03
10/7/2009 0.06
10/8/2009 T
10/9/2009 0.30
10/10/2009 0.24
10/11/2009 0.00
10/12/2009 0.00
10/13/2009 0.03
10/14/2009 0.03
10/15/2009 0.29
10/16/2009 0.15
10/17/2009 0.03
10/18/2009 0.00
10/19/2009 0.00
10/20/2009 0.00
10/21/2009 0.06
10/22/2009 0.02
10/23/2009 1.68
10/24/2009 0.28
10/25/2009 0.03
10/26/2009 0.35
10/27/2009 0.10
10/28/2009 0.06
10/29/2009 0.00
10/30/2009 1.10
10/31/2009 0.56
11/1/2009 0.00
11/2/2009 0.02
11/3/2009 0.00
11/4/2009 0.00
11/5/2009 0.00
11/6/2009 0.00
11/7/2009 0.00
11/8/2009 0.00
11/9/2009 0.00
11/10/2009 0.00
11/11/2009 0.00
11/12/2009 0.00
11/13/2009 0.00
11/14/2009 **
11/15/2009 **
11/16/2009 **
11/17/2009 0.02
11/18/2009 0.29
11/19/2009 0.28
11/20/2009 **
11/21/2009 **
11/22/2009 **
11/23/2009 **
11/24/2009 **
11/25/2009 **
11/26/2009 **
11/27/2009 **
11/28/2009 **
11/29/2009 **
11/30/2009 1.21
12/1/2009 0.00
12/2/2009 0.00
12/3/2009 T
12/4/2009 0.01
12/5/2009 0.00
12/6/2009 0.00
12/7/2009 0.05
12/8/2009 0.10
12/9/2009 0.93
12/10/2009 0.21
12/11/2009 0.00
12/12/2009 0.00
12/13/2009 **
12/14/2009 0.05
12/15/2009 0.02
12/16/2009 0.00
12/17/2009 0.00
12/18/2009 0.02
12/19/2009 0.47
12/20/2009 0.03
12/21/2009 0.02
12/22/2009 0.24
12/23/2009 0.19
12/24/2009 0.65
12/25/2009 1.02
12/26/2009 0.33
12/27/2009 0.25
12/28/2009 0.03
12/29/2009 0.00
12/30/2009 0.00
12/31/2009 0.14
Day of YearDaily PrcpMultiday Prcp
1/1/2010 0.00
1/2/2010 T
1/3/2010 0.00
1/4/2010 0.00
1/5/2010 0.00
1/6/2010 0.00
1/7/2010 0.20
1/8/2010 0.28
1/9/2010 0.00
1/10/2010 0.00
1/11/2010 0.00
1/12/2010 T
1/13/2010 0.00
1/14/2010 0.00
1/15/2010 0.00
1/16/2010 0.00
1/17/2010 0.00
1/18/2010 T
1/19/2010 0.00
1/20/2010 0.00
1/21/2010 0.02
1/22/2010 0.06
1/23/2010 T
1/24/2010 0.60
1/25/2010 T
1/26/2010 0.08
1/27/2010 T
1/28/2010 0.06
1/29/2010 0.00
1/30/2010 0.01
1/31/2010 0.00
2/1/2010 0.00
2/2/2010 0.06
2/3/2010 0.05
2/4/2010 0.00
2/5/2010 0.00
2/6/2010 0.03
2/7/2010 T
2/8/2010 0.00
2/9/2010 0.16
2/10/2010 0.32
2/11/2010 0.00
2/12/2010 0.00
2/13/2010 0.00
2/14/2010 0.00
2/15/2010 T
2/16/2010 0.04
2/17/2010 0.00
2/18/2010 0.00
2/19/2010 0.00
2/20/2010 0.03
2/21/2010 0.00
2/22/2010 0.60
2/23/2010 T
2/24/2010 0.05
2/25/2010 0.09
2/26/2010 T
2/27/2010 0.02
2/28/2010 0.00
3/1/2010 0.00
3/2/2010 0.00
3/3/2010 T
3/4/2010 0.00
3/5/2010 0.00
3/6/2010 0.00
3/7/2010 0.00
3/8/2010 0.06
3/9/2010 0.03
3/10/2010 0.19
3/11/2010 0.06
3/12/2010 0.78
3/13/2010 0.48
3/14/2010 0.18
3/15/2010 0.02
3/16/2010 0.00
3/17/2010 0.00
3/18/2010 0.00
3/19/2010 0.00
3/20/2010 0.14
3/21/2010 0.36
3/22/2010 0.00
3/23/2010 0.00
3/24/2010 0.00
3/25/2010 0.05
3/26/2010 0.00
3/27/2010 0.00
3/28/2010 0.01
3/29/2010 0.00
3/30/2010 0.00
3/31/2010 0.00
Day of YearDaily PrcpMultiday Prcp
4/1/2010 0.00
4/2/2010 0.00
4/3/2010 0.06
4/4/2010 0.24
4/5/2010 0.83
4/6/2010 1.07
4/7/2010 0.15
4/8/2010 0.08
4/9/2010 0.00
4/10/2010 0.00
4/11/2010 0.00
4/12/2010 T
4/13/2010 T
4/14/2010 0.00
4/15/2010 0.00
4/16/2010 T
4/17/2010 0.00
4/18/2010 0.00
4/19/2010 0.00
4/20/2010 0.00
4/21/2010 0.00
4/22/2010 0.01
4/23/2010 0.00
4/24/2010 0.30
4/25/2010 0.73
4/26/2010 0.09
4/27/2010 0.00
4/28/2010 0.00
4/29/2010 0.00
4/30/2010 0.00
5/1/2010 0.06
5/2/2010 1.46
5/3/2010 0.00
5/4/2010 0.00
5/5/2010 0.00
5/6/2010 0.00
5/7/2010 0.68
5/8/2010 0.25
5/9/2010 0.02
5/10/2010 0.00
5/11/2010 0.89
5/12/2010 0.38
5/13/2010 2.05
5/14/2010 0.07
5/15/2010 0.00
5/16/2010 0.00
5/17/2010 0.05
5/18/2010 0.02
5/19/2010 0.00
5/20/2010 0.00
5/21/2010 0.37
5/22/2010 0.05
5/23/2010 0.00
5/24/2010 0.00
5/25/2010 0.00
5/26/2010 0.18
5/27/2010 0.57
5/28/2010 0.00
5/29/2010 0.00
5/30/2010 0.00
5/31/2010 0.00
6/1/2010 1.13
6/2/2010 1.12
6/3/2010 0.03
6/4/2010 0.00
6/5/2010 0.19
6/6/2010 1.20
6/7/2010 0.09
6/8/2010 0.05
6/9/2010 0.34
6/10/2010 0.00
6/11/2010 0.03
6/12/2010 0.05
6/13/2010 0.27
6/14/2010 0.20
6/15/2010 0.03
6/16/2010 1.46
6/17/2010 0.00
6/18/2010 0.13
6/19/2010 1.05
6/20/2010 0.00
6/21/2010 0.00
6/22/2010 0.03
6/23/2010 0.02
6/24/2010 0.99
6/25/2010 0.00
6/26/2010 0.76
6/27/2010 0.00
6/28/2010 0.93
6/29/2010 0.00
6/30/2010 0.00
Day of YearDaily PrcpMultiday Prcp
7/1/2010 0.00
7/2/2010 0.00
7/3/2010 0.00
7/4/2010 0.00
7/5/2010 0.26
7/6/2010 0.01
7/7/2010 0.24
7/8/2010 0.16
7/9/2010 0.03
7/10/2010 0.00
7/11/2010 0.00
7/12/2010 1.25
7/13/2010 0.06
7/14/2010 0.00
7/15/2010 T
7/16/2010 0.00
7/17/2010 0.00
7/18/2010 0.00
7/19/2010 0.00
7/20/2010 0.00
7/21/2010 0.00
7/22/2010 0.00
7/23/2010 0.37
7/24/2010 7.28
7/25/2010 0.16
7/26/2010 0.00
7/27/2010 0.00
7/28/2010 0.00
7/29/2010 0.00
7/30/2010 0.00
7/31/2010 0.92
8/1/2010 0.00
8/2/2010 0.00
8/3/2010 2.22
8/4/2010 0.68
8/5/2010 0.63
8/6/2010 0.00
8/7/2010 0.00
8/8/2010 0.00
8/9/2010 0.21
8/10/2010 T
8/11/2010 0.00
8/12/2010 0.00
8/13/2010 0.00
8/14/2010 0.77
8/15/2010 0.00
8/16/2010 0.00
8/17/2010 0.00
8/18/2010 0.14
8/19/2010 0.00
8/20/2010 0.00
8/21/2010 0.53
8/22/2010 0.00
8/23/2010 0.00
8/24/2010 0.00
8/25/2010 0.00
8/26/2010 0.00
8/27/2010 0.00
8/28/2010 0.00
8/29/2010 0.00
8/30/2010 0.00
8/31/2010 0.05
9/1/2010 0.44
9/2/2010 0.05
9/3/2010 1.79
9/4/2010 0.01
9/5/2010 0.00
9/6/2010 0.02
9/7/2010 T
9/8/2010 0.00
9/9/2010 0.00
9/10/2010 0.00
9/11/2010 0.23
9/12/2010 0.00
9/13/2010 0.00
9/14/2010 0.00
9/15/2010 0.00
9/16/2010 T
9/17/2010 0.00
9/18/2010 0.00
9/19/2010 0.29
9/20/2010 0.00
9/21/2010 0.00
9/22/2010 0.19
9/23/2010 0.00
9/24/2010 0.25
9/25/2010 0.00
9/26/2010 0.00
9/27/2010 0.00
9/28/2010 0.00
9/29/2010 0.00
9/30/2010 0.00



Observation Date Observation Time Precipitation Snowfall Snowfall SWE Snow Depth Snow SWE Notes
10/1/2009 7:00 AM 0.00 0.0 M M M
10/2/2009 8:00 AM 0.70 M M M M 47.1° F. Heavy rain and thunderstorms observed through the evening, with lighter rain showers during the day.
10/3/2009 7:00 AM 0.31 M M M M 2-day storm total: 1.01"
10/4/2009 7:00 AM 0.10 M M M M 0.10" exactly. 3-day storm total 1.11".
10/5/2009 7:00 AM 0.00 0.0 M M M
10/6/2009 8:00 AM 0.03 M M M M Light rain at time of observation.
10/7/2009 7:00 AM 0.06 M M M M
10/8/2009 8:35 AM T M M M M
10/9/2009 8:30 AM 0.30 M M M M This is an exact reading.
10/10/2009 7:00 AM 0.24 M M M M
10/11/2009 7:00 AM 0.00 0.0 M M M
10/12/2009 7:00 AM 0.00 0.0 M M M
10/13/2009 7:00 AM 0.03 M M M M
10/14/2009 8:30 AM 0.03 M M M M Same as yesterday, mostly in the form of light drizzle overnight.
10/15/2009 8:30 AM 0.29 M M M M
10/16/2009 7:00 AM 0.15 M M M M 4-day total: 0.50"
10/17/2009 7:00 AM 0.03 M M M M
10/18/2009 7:00 AM 0.00 0.0 M M M
10/19/2009 7:00 AM 0.00 0.0 M M M
10/20/2009 7:00 AM 0.00 0.0 M M M
10/21/2009 7:00 AM 0.06 M M M M Overnight thunderstorms, but little precipitation.
10/22/2009 8:30 AM 0.02 M M M M Light rain as of obs time.
10/23/2009 8:00 AM 1.68 M M M M As measured by weight (330g). Constant rain starting immediately after last observation and persisting through this one. Storm total: 1.70".
10/24/2009 10:30 AM 0.28 M M M M
10/25/2009 7:00 AM 0.03 M M M M 5-day total: 2.07"
10/26/2009 8:30 AM 0.35 M M M M 6-day rain total: 2.42".
10/27/2009 8:25 AM 0.10 M M M M Exact measurement. 42.7° F. 7-day rain total: 2.52"
10/28/2009 7:00 AM 0.06 M M M M 8-day rain total: 2.58"
10/29/2009 7:00 AM 0.00 0.0 M M M Finally, no rain!
10/30/2009 7:00 AM 1.10 M M M M As measured by weight. 63.9° F.
10/31/2009 7:00 AM 0.56 M M M M Storm total: 1.66.
11/1/2009 7:00 AM 0.00 0.0 M M M
11/2/2009 7:00 AM 0.02 M M M M
11/3/2009 7:00 AM 0.00 0.0 M M M
11/4/2009 7:00 AM 0.00 0.0 M M M
11/5/2009 7:00 AM 0.00 0.0 M M M
11/6/2009 7:00 AM 0.00 0.0 M M M
11/7/2009 7:00 AM 0.00 0.0 M M M
11/8/2009 7:00 AM 0.00 0.0 M M M
11/9/2009 7:00 AM 0.00 0.0 M M M
11/10/2009 7:00 AM 0.00 0.0 M M M
11/11/2009 7:00 AM 0.00 0.0 M M M
11/12/2009 7:00 AM 0.00 0.0 M M M
11/13/2009 7:00 AM 0.00 0.0 M M M
11/18/2009 7:00 AM 0.29 M M M M Raining at time of observation.
11/19/2009 3:20 PM 0.28 M M M M Last report for 10 days.
12/1/2009 7:00 AM 0.00 0.0 M M M
12/2/2009 7:00 AM 0.00 0.0 M M M
12/3/2009 7:00 AM T 0.0 0.00 0.0 0.00
12/4/2009 7:00 AM 0.01 0.1 0.01 0.0 0.01
12/5/2009 7:00 AM 0.00 0.0 M M M
12/6/2009 7:00 AM 0.00 0.0 M M M
12/7/2009 8:30 AM 0.05 1.4 0.05 1.5 0.05 Light snow at time of observation
12/8/2009 8:00 AM 0.10 1.2 0.10 2.0 M 28.0° F. As measured by weight. Light snow really starting to crank up.
12/9/2009 8:30 AM 0.93 2.0 M 2.0 M 32.5° F. Very windy, flurries. Includes 0.21 at 5:00 PM last night.
12/10/2009 8:30 AM 0.21 2.0 0.21 4.5 M 0.1° F, windy. Brr. Snow was blown all over the place, so 2.0" is a best estimate.
12/11/2009 7:00 AM 0.00 0.0 M M M
12/12/2009 7:00 AM 0.00 0.0 M M M
12/15/2009 7:00 AM 0.02 M M M M
12/16/2009 7:00 AM 0.00 0.0 M M M
12/17/2009 7:00 AM 0.00 0.0 M M M
12/18/2009 10:00 AM 0.02 T 0.02 1.0 M Light snow, but not accumulating. 35.1° F.
12/19/2009 9:30 AM 0.47 3.1 0.47 4.0 M 32.1° F. Includes 0.21" that fell in the 9 hours prior to obs.
12/20/2009 7:00 AM 0.03 M M M M Very much an approximation - amount in gauge wasn't accurate, probably because it wasn't emptied fully (0.10")
12/21/2009 7:00 AM 0.02 0.1 0.02 M M
12/22/2009 8:30 AM 0.24 2.3 0.47 6.0 0.81 Light snow overnight. Light snow continues, occasionally becoming heavier.
12/23/2009 1:15 PM 0.19 M M M M 32.7° F. Precipitation is falling as sleet.
12/24/2009 7:00 AM 0.65 0.0 0.00 M M 0.25" ice accumulation, as measured. 31.8° F. Dead branches are breaking off and crashing to the ground.
12/25/2009 8:45 AM 1.02 0.0 0.00 M M 0.73" 7:00a-1:45a, 0.29" 1:45a-8:45a. 40.2° F.
12/26/2009 10:30 AM 0.33 5.7 0.22 8.5 0.70 Light to moderate snow. Not sure when one storm ended and the other began. 28.7° F.
12/27/2009 9:00 AM 0.25 6.1 0.25 10.0 M 20.8° F. Light snow at this time. See associated significant weather reports.
12/28/2009 7:00 AM 0.03 0.4 M M M
12/29/2009 8:00 AM 0.00 0.0 M M M 4.3 degrees.
12/30/2009 8:00 AM 0.00 0.0 M M M 23.2° F
12/31/2009 7:00 AM 0.14 1.0 M M M
1/1/2010 7:00 AM 0.00 0.0 M M M
1/2/2010 12:00 PM T T M M M 8.3° F, even at noon!
1/3/2010 9:30 AM 0.00 0.0 M M M
1/4/2010 7:00 AM 0.00 0.0 M M M
1/5/2010 7:00 AM 0.00 0.0 M M M
1/6/2010 9:00 AM 0.00 0.0 0.00 4.0 0.64
1/7/2010 8:30 AM 0.20 2.6 0.20 9.0 M 17.2° F. 0.20" as measured by weight (40g). 12.5:1 snow to water ratio. Light snow continues.
1/8/2010 8:30 AM 0.28 4.5 0.28 12.0 M 22.3° F. Snow throughout the day. Storm total 7.1".
1/9/2010 7:00 AM 0.00 0.0 M M M
1/10/2010 7:00 AM 0.00 0.0 M M M
1/11/2010 7:00 AM 0.00 0.0 M M M
1/12/2010 7:00 AM T T T 9.0 1.71
1/13/2010 7:00 AM 0.00 0.0 M M M
1/14/2010 7:00 AM 0.00 0.0 M M M
1/15/2010 7:00 AM 0.00 0.0 M M M
1/16/2010 7:00 AM 0.00 0.0 M M M
1/17/2010 7:00 AM 0.00 0.0 M M M
1/18/2010 7:00 AM T M M M M
1/19/2010 7:00 AM 0.00 0.0 M M M
1/20/2010 7:00 AM 0.00 0.0 M M M
1/21/2010 9:00 AM 0.02 T 0.02 5.0 M Light glaze of ice that's mostly melting this morning.
1/22/2010 7:00 AM 0.06 M M M M This was *not* measured, it's a guesstimate as the gauge was out of commission yesterday.
1/23/2010 4:10 PM T M M M M
1/24/2010 10:15 AM 0.60 M M 0.0 0.00 44.1° F. Sprinkles. Minor flooding of backyard.
1/25/2010 8:00 AM T M M M M Light sleet(?) falling. 30.9 degrees.
1/26/2010 8:00 AM 0.08 0.3 M M M This is a guess... the snow is blown everywhere, including off the snow board. However some snow accumulated on the table.
1/27/2010 8:00 AM T M M M M Practically unmeasureable... but a few flakes were found in the bottom of my gauge.
1/28/2010 8:00 AM 0.06 0.5 0.06 0.5 M 5.4° F. Moderate north wind, to boot.
1/29/2010 7:00 AM 0.00 0.0 M M M
1/30/2010 11:00 AM 0.01 1.0 0.50 1.0 M Lake-effect snow.
1/31/2010 7:00 AM 0.00 0.0 M M M
2/1/2010 7:00 AM 0.00 0.0 M M M
2/2/2010 8:00 AM 0.06 1.1 0.06 1.0 M 29.1° F. Moderate snow currently falling.
2/3/2010 8:00 AM 0.05 T M M M Not entirely sure how this happened. The snow may have melted before I got a chance to measure.
2/4/2010 7:00 AM 0.00 0.0 M M M
2/5/2010 7:00 AM 0.00 0.0 M M M
2/6/2010 11:00 PM 0.03 0.5 M M M This is sort of an estimate on the snow amount - it all melted.
2/7/2010 9:00 AM T T M M M Some non-accumulating lake-effect snow.
2/8/2010 7:00 AM 0.00 0.0 M M M
2/9/2010 8:00 AM 0.16 1.7 0.15 2.0 M Light to moderate snow falling.
2/10/2010 8:30 AM 0.32 4.7 M M M Blown snow makes the snow total somewhat difficult to report, but it appears somewhere between 0.3" to 1.0" of snow fell overnight. Storm total: 6.7".
2/11/2010 7:00 AM 0.00 0.0 M M M
2/12/2010 7:00 AM 0.00 0.0 M M M
2/13/2010 7:00 AM 0.00 0.0 M M M
2/14/2010 7:00 AM 0.00 0.0 M M M
2/15/2010 7:00 AM T T M M M
2/16/2010 8:00 AM 0.04 0.3 M 5.0 M
2/17/2010 7:00 AM 0.00 0.0 M M M
2/18/2010 7:00 AM 0.00 0.0 M M M
2/19/2010 7:00 AM 0.00 0.0 M M M
2/20/2010 12:00 PM 0.03 0.3 M M M
2/21/2010 7:00 AM 0.00 0.0 M M M
2/22/2010 8:45 AM 0.60 2.0 0.44 5.0 1.02 As measured by weight, although the SWE is mysteriously less than the precip total. Some snow may have fallen as rain or melted, as the temperature is 33.6° F.
2/23/2010 7:00 AM T T M M M
2/24/2010 8:15 AM 0.05 0.8 0.05 5.0 M Light snow, 23° F
2/25/2010 7:00 AM 0.09 2.1 M 6.0 M
2/26/2010 7:00 AM T M M M M
2/27/2010 7:00 AM 0.02 0.1 M M M
2/28/2010 7:00 AM 0.00 0.0 M M M
3/1/2010 7:00 AM 0.00 0.0 M M M
3/2/2010 7:00 AM 0.00 0.0 M M M
3/3/2010 7:00 AM T M M M M
3/4/2010 7:00 AM 0.00 0.0 M M M
3/5/2010 7:00 AM 0.00 0.0 M M M
3/6/2010 7:00 AM 0.00 0.0 M M M
3/7/2010 7:00 AM 0.00 0.0 M M M
3/8/2010 7:15 AM 0.06 0.0 0.00 0.0 0.00 Very foggy, less than 1/4 mile visibility.
3/9/2010 8:30 AM 0.03 M M M M This may be a result of extremely heavy dew.
3/10/2010 8:15 AM 0.19 M M M M 48° F. As measured by weight.
3/11/2010 8:10 AM 0.06 M M M M 50.4° F. Moderate rain just started.
3/12/2010 7:50 AM 0.78 M M M M 39.9° F. See intense precip report; did not obtain an estimated rain rate, unfortunately.
3/13/2010 9:25 AM 0.48 M M M M 46.0° F. Drizzle. 6-day total 1.60".
3/14/2010 9:30 AM 0.18 M M M M
3/15/2010 7:00 AM 0.02 M M M M
3/16/2010 7:00 AM 0.00 0.0 M M M
3/17/2010 7:00 AM 0.00 0.0 M M M
3/18/2010 7:00 AM 0.00 0.0 M M M
3/19/2010 7:00 AM 0.00 0.0 M M M
3/20/2010 8:00 AM 0.14 0.6 M M M Light snow.
3/21/2010 7:00 AM 0.36 0.2 M M M
3/22/2010 7:00 AM 0.00 0.0 M M M
3/23/2010 7:00 AM 0.00 0.0 M M M
3/24/2010 7:00 AM 0.00 0.0 M M M
3/25/2010 8:15 AM 0.05 M M M M 44.4° F, light drizzle
3/26/2010 7:00 AM 0.00 0.0 M M M
3/27/2010 7:00 AM 0.00 0.0 M M M
3/28/2010 7:00 AM 0.01 M M M M
3/29/2010 7:00 AM 0.00 0.0 M M M
3/30/2010 7:00 AM 0.00 0.0 M M M
3/31/2010 7:00 AM 0.00 0.0 M M M
4/1/2010 7:00 AM 0.00 0.0 M M M
4/2/2010 7:00 AM 0.00 0.0 M M M
4/3/2010 9:30 AM 0.06 M M M M 52.4° F. Very light rain still occurring at this time.
4/4/2010 7:00 AM 0.24 M M M M 54° F. 0.30" storm total.
4/5/2010 7:00 AM 0.83 M M M M Waves of thunderstorms, although no severe weather (or even high wind, or even really heavy rain) locally.
4/6/2010 8:15 AM 1.07 M M M M Two waves (maybe more?) of storms, none severe; see associated intense precip report. Latest wave of storms just exited the area. 4-day total: 2.20". 0.46" before 9:15 last night, 0.61" between then and 8:15 this morning.
4/7/2010 7:00 AM 0.15 M M M M 49° F
4/8/2010 7:00 AM 0.08 M M M M
4/9/2010 7:00 AM 0.00 0.0 M M M
4/10/2010 7:00 AM 0.00 0.0 M M M
4/11/2010 7:00 AM 0.00 0.0 M M M
4/12/2010 7:00 AM T M M M M Light showers in the morning.
4/13/2010 7:00 AM T M M M M
4/14/2010 7:00 AM 0.00 0.0 M M M
4/15/2010 7:00 AM 0.00 0.0 M M M
4/16/2010 7:00 AM T M M M M
4/17/2010 7:00 AM 0.00 0.0 M M M
4/18/2010 7:00 AM 0.00 0.0 M M M
4/19/2010 7:00 AM 0.00 0.0 M M M
4/20/2010 7:00 AM 0.00 0.0 M M M
4/21/2010 7:00 AM 0.00 0.0 M M M
4/22/2010 7:00 AM 0.01 M M M M
4/23/2010 7:00 AM 0.00 0.0 M M M
4/24/2010 8:30 AM 0.30 M M M M This is an exact measurement.
4/25/2010 9:30 AM 0.73 M M M M Showers and some thunder from midnight-1a.
4/26/2010 7:00 AM 0.09 M M M M
4/27/2010 7:00 AM 0.00 0.0 M M M
4/28/2010 7:00 AM 0.00 0.0 M M M
4/29/2010 7:00 AM 0.00 0.0 M M M
4/30/2010 7:00 AM 0.00 0.0 M M M
5/1/2010 7:00 AM 0.06 M M M M
5/2/2010 7:00 AM 1.46 M M M M Not a typo - as measured by weight. Did not observe thunder, just regular moderate rain.
5/3/2010 7:00 AM 0.00 0.0 M M M
5/4/2010 7:00 AM 0.00 0.0 M M M
5/5/2010 7:00 AM 0.00 0.0 M M M
5/6/2010 7:00 AM 0.00 0.0 M M M
5/7/2010 7:00 AM 0.68 M M M M Lots of thunder. Little rain. 49.1 degrees.
5/8/2010 10:00 AM 0.25 M M M M 47.8 degrees
5/9/2010 7:00 AM 0.02 M M M M
5/10/2010 7:00 AM 0.00 0.0 M M M
5/11/2010 7:45 AM 0.89 M M M M 48.7° F. No thunder.
5/12/2010 10:15 PM 0.38 M M M M
5/13/2010 7:00 AM 2.05 M M M M NOTE: This is since 10PM last night! 48.7 degrees. Brief flash flooding did occur with water ponding onto the road from the creek but overland flooding is the greater, though likely minor, concern. As measured by weight. Vivid lightning caused power outage at 4:30 AM.
5/14/2010 7:00 AM 0.07 M M M M 52.7 degrees
5/15/2010 7:00 AM 0.00 0.0 M M M
5/16/2010 7:00 AM 0.00 0.0 M M M
5/17/2010 8:00 AM 0.05 M M M M
5/18/2010 7:00 AM 0.02 M M M M
5/19/2010 7:00 AM 0.00 0.0 M M M
5/20/2010 7:00 AM 0.00 0.0 M M M
5/21/2010 8:00 AM 0.37 M M M M 60.8 degrees.
5/22/2010 8:45 AM 0.05 M M M M
5/23/2010 7:00 AM 0.00 0.0 M M M
5/24/2010 7:00 AM 0.00 0.0 M M M
5/25/2010 7:00 AM 0.00 0.0 M M M
5/26/2010 8:15 AM 0.18 M M M M 68.9 F.
5/27/2010 8:00 AM 0.57 M M M M Most of the rain fell before 6:00 pm. 66.2 degrees. At work in 1 W Bartlett, observed small hail and estimated up to 2" of rain.
5/28/2010 7:00 AM 0.00 0.0 M M M
5/29/2010 7:00 AM 0.00 0.0 M M M
5/30/2010 7:00 AM 0.00 0.0 M M M
5/31/2010 7:00 AM 0.00 0.0 M M M
6/1/2010 8:00 AM 1.13 M M M M Most fell in 30 minutes.
6/2/2010 7:45 AM 1.12 M M M M 66.7° F. No severe weather observed here, just lots more thunder and a little bit of a downpour.
6/3/2010 8:15 AM 0.03 M M M M
6/4/2010 7:00 AM 0.00 0.0 M M M
6/5/2010 7:45 AM 0.19 M M M M Mostly in the last 15 minutes. Keeping an eye on rain forming to the W though.
6/6/2010 7:00 AM 1.20 M M M M See intense precip reports
6/7/2010 7:00 AM 0.09 M M M M
6/8/2010 8:30 AM 0.05 M M M M Light rain continues.
6/9/2010 7:00 AM 0.34 M M M M
6/10/2010 7:00 AM 0.00 0.0 M M M
6/11/2010 7:00 AM 0.03 M M M M
6/12/2010 10:15 AM 0.05 M M M M No severe conditions observed yet.
6/13/2010 12:00 PM 0.27 M M M M
6/14/2010 8:30 AM 0.20 M M M M 0.20 exactly
6/15/2010 7:00 AM 0.03 M M M M
6/16/2010 8:00 AM 1.46 M M M M See associated intense precip report.
6/17/2010 7:00 AM 0.00 0.0 M M M
6/18/2010 7:00 AM 0.13 M M M M Much lightning and thunder.
6/19/2010 8:00 AM 1.05 M M M M Widespread power outages throughout old parts of Carol Stream, including at the reporting location through the report time. Scattered 2-3 inch live branches snapped off. No flooding, fortunately. 0.55 with first MCS, 0.50 with second MCS.
6/20/2010 7:00 AM 0.00 0.0 M M M
6/21/2010 7:00 AM 0.00 0.0 M M M
6/22/2010 7:00 AM 0.03 M M M M Very strong storm developed just to the NE and sent a lot of lightning down in our direction, but not that much rain.
6/23/2010 7:00 AM 0.02 M M M M Light rain, thunder. 75.6 degrees.
6/24/2010 7:00 AM 0.99 M M M M Frequent lightning and driving rains to less than 1/4 mile visibility, but not much severe weather to speak of except for more small to medium branches down.
6/25/2010 7:00 AM 0.00 0.0 M M M
6/26/2010 7:00 AM 0.76 M M M M See intense precip report.
6/27/2010 7:00 AM 0.00 0.0 M M M
6/28/2010 9:30 AM 0.93 M M M M
6/29/2010 7:00 AM 0.00 0.0 M M M
6/30/2010 7:00 AM 0.00 0.0 M M M
7/1/2010 7:00 AM 0.00 0.0 M M M
7/2/2010 7:00 AM 0.00 0.0 M M M
7/3/2010 7:00 AM 0.00 0.0 M M M
7/4/2010 7:00 AM 0.00 0.0 M M M
7/5/2010 7:00 AM 0.26 M M M M
7/6/2010 8:00 AM 0.01 M M M M
7/7/2010 7:00 AM 0.24 M M M M Scattered showers, nothing prolonged or heavy. Two different periods.
7/8/2010 8:00 AM 0.16 M M M M
7/9/2010 7:00 AM 0.03 M M M M
7/10/2010 7:00 AM 0.00 0.0 M M M
7/11/2010 7:00 AM 0.00 0.0 M M M
7/12/2010 6:45 AM 1.25 M M M M
7/13/2010 7:00 AM 0.06 M M M M
7/14/2010 7:00 AM 0.00 0.0 M M M
7/15/2010 7:00 AM T M M M M
7/16/2010 7:00 AM 0.00 0.0 M M M
7/17/2010 7:00 AM 0.00 0.0 M M M
7/18/2010 7:00 AM 0.00 0.0 M M M
7/19/2010 7:00 AM 0.00 0.0 M M M
7/20/2010 7:00 AM 0.00 0.0 M M M
7/21/2010 7:00 AM 0.00 0.0 M M M
7/22/2010 7:00 AM 0.00 0.0 M M M
7/23/2010 7:15 AM 0.37 M M M M 0.05" before I went to bed, 0.32" so far this morning. Very heavy downpour at about 7:00 for about 2 minutes.
7/24/2010 7:00 AM 7.28 M M M M Unbelievable. All but 0.15" fell after 10:30 PM *last night*! See the many Intense Precip Reports submitted. Light rain continues; most residents were able to get their cars out of the way of the swiftly rising creek. In this part of the woods, the creek has already almost made it to the foundations of the lowest homes.
7/25/2010 7:00 AM 0.16 M M M M Light rain through the morning. Final storm total: 7.44". Klein Creek has crested roughly 4" shy of 9/13-14 levels, but still causing widespread damage.
7/26/2010 7:00 AM 0.00 0.0 M M M
7/27/2010 7:00 AM 0.00 0.0 M M M
7/28/2010 7:00 AM 0.00 0.0 M M M
7/29/2010 7:00 AM 0.00 0.0 M M M
7/30/2010 7:00 AM 0.00 0.0 M M M
7/31/2010 9:30 AM 0.92 M M M M Not sure when all this rain fell.
8/1/2010 7:00 AM 0.00 0.0 M M M
8/2/2010 7:00 AM 0.00 0.0 M M M
8/3/2010 7:10 AM 2.22 M M M M Multiple rounds of lightning and thunder, but I'm not sure when the hardest rain fell.
8/4/2010 6:55 AM 0.68 M M M M Very heavy rain for about 10 minutes, accompanies by near-severe wind gusts. Power is now out at this location. 0.07" before the latest storm, 0.61" after.
8/5/2010 7:00 AM 0.63 M M M M Storm total: 1.31"
8/6/2010 7:00 AM 0.00 0.0 M M M
8/7/2010 7:00 AM 0.00 0.0 M M M
8/8/2010 7:00 AM 0.00 0.0 M M M
8/9/2010 7:45 AM 0.21 M M M M 0.11 during the day, 0.10 this morning.
8/10/2010 7:00 AM T M M M M
8/11/2010 7:00 AM 0.00 0.0 M M M
8/12/2010 7:00 AM 0.00 0.0 M M M
8/13/2010 7:00 AM 0.00 0.0 M M M
8/14/2010 7:00 AM 0.77 M M M M No additional rain fell after about 9:00 PM.
8/15/2010 7:00 AM 0.00 0.0 M M M
8/16/2010 7:00 AM 0.00 0.0 M M M
8/17/2010 7:00 AM 0.00 0.0 M M M
8/18/2010 7:00 AM 0.14 M M M M Light rain starting mainly at 9:00 PM or so.
8/19/2010 7:00 AM 0.00 0.0 M M M
8/20/2010 7:00 AM 0.00 0.0 M M M
8/21/2010 8:30 AM 0.53 M M M M Heavy rain fell sometime overnight, but I didn't catch the time.
8/22/2010 7:00 AM 0.00 0.0 M M M
8/23/2010 7:00 AM 0.00 0.0 M M M
8/24/2010 7:00 AM 0.00 0.0 M M M
8/25/2010 7:00 AM 0.00 0.0 M M M
8/26/2010 7:00 AM 0.00 0.0 M M M
8/27/2010 7:00 AM 0.00 0.0 M M M
8/28/2010 7:00 AM 0.00 0.0 M M M
8/29/2010 7:00 AM 0.00 0.0 M M M
8/30/2010 7:00 AM 0.00 0.0 M M M
8/31/2010 7:00 AM 0.05 M M M M
9/1/2010 8:00 AM 0.44 M M M M No thunder.
9/2/2010 8:00 AM 0.05 M M M M
9/3/2010 7:00 AM 1.79 M M M M
9/4/2010 7:00 AM 0.01 M M M M
9/5/2010 7:00 AM 0.00 0.0 M M M
9/6/2010 7:00 AM 0.02 M M M M
9/7/2010 7:00 AM T M M M M
9/8/2010 7:00 AM 0.00 0.0 M M M
9/9/2010 7:00 AM 0.00 0.0 M M M
9/10/2010 7:00 AM 0.00 0.0 M M M
9/11/2010 10:20 AM 0.23 M M M M Light rain continues at this time.
9/12/2010 7:00 AM 0.00 0.0 M M M
9/13/2010 7:00 AM 0.00 0.0 M M M
9/14/2010 7:00 AM 0.00 0.0 M M M
9/15/2010 7:00 AM 0.00 0.0 M M M
9/16/2010 7:50 AM T M M M M
9/17/2010 7:00 AM 0.00 0.0 M M M
9/18/2010 7:00 AM 0.00 0.0 M M M
9/19/2010 7:00 AM 0.29 M M M M
9/20/2010 7:00 AM 0.00 0.0 M M M
9/21/2010 7:00 AM 0.00 0.0 M M M
9/22/2010 7:45 AM 0.19 M M M M Brief heavy rain.
9/23/2010 7:00 AM 0.00 0.0 M M M
9/24/2010 9:15 AM 0.25 M M M M No thunder observed. Still very windy!
9/25/2010 7:00 AM 0.00 0.0 M M M
9/26/2010 7:00 AM 0.00 0.0 M M M
9/27/2010 7:00 AM 0.00 0.0 M M M
9/28/2010 7:00 AM 0.00 0.0 M M M
9/29/2010 7:00 AM 0.00 0.0 M M M
9/30/2010 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
11/14/2009 11/17/2009 7:00 AM 4 0.02 M M
11/20/2009 11/30/2009 12:50 PM 11 1.21 M M As measured by weight.
12/13/2009 12/14/2009 8:40 AM 2 0.05 2.5 0.05 Water content of 2.5" of snow: 0.61" by weight.



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
5/26/2010 3:25 PM Very significant (rate: 2+" / hr) rainfall! Will make a determination as to flash flooding shortly. UPDATE: Location is 1 mile W of downtown Bartlett. 1/4" Pea Size 1/4" Pea Size Rice Hard|Clear Ice 5 1min no damage Intermittent True After rain Same time as smaller hail 30-40