Station Overview Station Location
Station Number IL-WN-2 Latitude 42.405
Station Name Roscoe 1.6 ESE Longitude -88.9795
County Winnebago Elevation (ft) 860



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 2.73 1.90 31 1.90 31 0.00 0 0 6 0 0.0 0 0
Nov 10 2.58 2.22 30 2.22 30 0.00 0 0 10 4 0.0 0 0
Dec 10 1.85 1.45 31 1.45 31 0.00 0 0 9 6 14.4 8 27
Jan 11 1.29 0.80 31 0.80 31 0.00 0 0 8 14 8.4 9 21
Feb 11 1.36 2.06 28 2.06 28 0.00 0 0 13 4 16.4 12 22
March 11 2.05 3.73 31 3.73 31 0.00 0 0 8 7 0.6 1 1
April 11 3.42 4.41 30 3.91 27 0.50 3 1 14 2 2.2 2 1
May 11 3.79 3.29 31 3.29 31 0.00 0 0 15 4 0.0 0 0
June 11 4.55 2.11 30 2.11 30 0.00 0 0 10 3 0.0 0 0
July 11 3.84 5.54 31 5.54 31 0.00 0 0 11 1 0.0 0 0
Aug 11 4.26 6.16 31 6.16 31 0.00 0 0 9 2 0.0 0 0
Sept 11 3.36 4.30 30 4.30 30 0.00 0 0 9 1 0.0 0 0
Water Year Totals: 35.08" 37.97" 365 days 37.47" 362 0.50" 3 days 1 122 days 48 days 42.0" 32 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 0.03
10/3/2010 0.00
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 0.01
10/14/2010 0.00
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 0.77
10/25/2010 0.26
10/26/2010 0.77
10/27/2010 0.06
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 0.18
11/6/2010 0.00
11/7/2010 0.00
11/8/2010 0.00
11/9/2010 0.00
11/10/2010 0.00
11/11/2010 T
11/12/2010 0.08
11/13/2010 0.05
11/14/2010 0.12
11/15/2010 T
11/16/2010 0.03
11/17/2010 T
11/18/2010 0.00
11/19/2010 0.00
11/20/2010 0.00
11/21/2010 T
11/22/2010 0.08
11/23/2010 1.16
11/24/2010 0.00
11/25/2010 0.13
11/26/2010 0.00
11/27/2010 0.00
11/28/2010 0.00
11/29/2010 0.00
11/30/2010 0.37
12/1/2010 T
12/2/2010 T
12/3/2010 0.00
12/4/2010 0.26
12/5/2010 0.12
12/6/2010 0.00
12/7/2010 T
12/8/2010 0.00
12/9/2010 0.00
12/10/2010 0.06
12/11/2010 0.00
12/12/2010 0.47
12/13/2010 0.03
12/14/2010 0.00
12/15/2010 0.00
12/16/2010 0.00
12/17/2010 0.05
12/18/2010 0.00
12/19/2010 0.00
12/20/2010 0.00
12/21/2010 0.25
12/22/2010 T
12/23/2010 T
12/24/2010 0.00
12/25/2010 0.20
12/26/2010 0.00
12/27/2010 0.00
12/28/2010 0.00
12/29/2010 0.00
12/30/2010 T
12/31/2010 0.01
Day of YearDaily PrcpMultiday Prcp
1/1/2011 0.01
1/2/2011 T
1/3/2011 0.00
1/4/2011 0.03
1/5/2011 0.00
1/6/2011 T
1/7/2011 T
1/8/2011 T
1/9/2011 T
1/10/2011 0.00
1/11/2011 0.05
1/12/2011 0.10
1/13/2011 0.00
1/14/2011 T
1/15/2011 0.01
1/16/2011 T
1/17/2011 T
1/18/2011 0.46
1/19/2011 T
1/20/2011 T
1/21/2011 0.00
1/22/2011 0.01
1/23/2011 T
1/24/2011 T
1/25/2011 0.00
1/26/2011 0.00
1/27/2011 T
1/28/2011 0.13
1/29/2011 0.00
1/30/2011 T
1/31/2011 0.00
2/1/2011 0.11
2/2/2011 0.46
2/3/2011 T
2/4/2011 0.00
2/5/2011 0.00
2/6/2011 0.07
2/7/2011 0.03
2/8/2011 0.05
2/9/2011 0.00
2/10/2011 0.00
2/11/2011 0.00
2/12/2011 0.01
2/13/2011 0.00
2/14/2011 0.00
2/15/2011 0.00
2/16/2011 0.01
2/17/2011 0.00
2/18/2011 0.00
2/19/2011 0.00
2/20/2011 T
2/21/2011 1.03
2/22/2011 0.04
2/23/2011 T
2/24/2011 T
2/25/2011 0.01
2/26/2011 0.03
2/27/2011 0.05
2/28/2011 0.16
3/1/2011 0.00
3/2/2011 0.00
3/3/2011 0.00
3/4/2011 0.07
3/5/2011 1.03
3/6/2011 T
3/7/2011 0.00
3/8/2011 T
3/9/2011 0.34
3/10/2011 0.07
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 T
3/17/2011 0.00
3/18/2011 T
3/19/2011 0.00
3/20/2011 T
3/21/2011 1.53
3/22/2011 0.08
3/23/2011 0.59
3/24/2011 0.02
3/25/2011 0.00
3/26/2011 0.00
3/27/2011 T
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 0.35
4/3/2011 T
4/4/2011 0.02
4/5/2011 0.01
4/6/2011 0.00
4/7/2011 0.00
4/8/2011 0.65
4/9/2011 0.00
4/10/2011 0.00
4/11/2011 0.11
4/12/2011 0.00
4/13/2011 0.00
4/14/2011 T
4/15/2011 **
4/16/2011 **
4/17/2011 0.50
4/18/2011 0.49
4/19/2011 0.06
4/20/2011 0.89
4/21/2011 0.00
4/22/2011 0.07
4/23/2011 0.29
4/24/2011 0.00
4/25/2011 0.00
4/26/2011 0.52
4/27/2011 0.19
4/28/2011 0.20
4/29/2011 0.06
4/30/2011 0.00
5/1/2011 0.02
5/2/2011 0.00
5/3/2011 0.00
5/4/2011 0.00
5/5/2011 0.00
5/6/2011 T
5/7/2011 0.01
5/8/2011 T
5/9/2011 0.00
5/10/2011 0.01
5/11/2011 0.00
5/12/2011 T
5/13/2011 0.18
5/14/2011 0.45
5/15/2011 0.10
5/16/2011 T
5/17/2011 0.00
5/18/2011 0.00
5/19/2011 0.01
5/20/2011 0.00
5/21/2011 0.00
5/22/2011 0.04
5/23/2011 1.30
5/24/2011 0.01
5/25/2011 0.22
5/26/2011 0.47
5/27/2011 0.00
5/28/2011 0.05
5/29/2011 0.01
5/30/2011 0.41
5/31/2011 0.00
6/1/2011 T
6/2/2011 0.00
6/3/2011 0.00
6/4/2011 0.00
6/5/2011 0.00
6/6/2011 0.00
6/7/2011 0.00
6/8/2011 0.00
6/9/2011 0.48
6/10/2011 0.20
6/11/2011 0.15
6/12/2011 T
6/13/2011 0.00
6/14/2011 0.00
6/15/2011 0.34
6/16/2011 0.42
6/17/2011 0.00
6/18/2011 0.00
6/19/2011 0.00
6/20/2011 0.00
6/21/2011 0.08
6/22/2011 0.26
6/23/2011 0.09
6/24/2011 0.02
6/25/2011 0.00
6/26/2011 T
6/27/2011 0.00
6/28/2011 0.07
6/29/2011 0.00
6/30/2011 0.00
Day of YearDaily PrcpMultiday Prcp
7/1/2011 0.00
7/2/2011 0.03
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 0.00
7/12/2011 0.37
7/13/2011 0.00
7/14/2011 0.00
7/15/2011 T
7/16/2011 0.05
7/17/2011 0.02
7/18/2011 0.01
7/19/2011 0.00
7/20/2011 0.00
7/21/2011 0.00
7/22/2011 0.44
7/23/2011 2.67
7/24/2011 0.27
7/25/2011 0.04
7/26/2011 0.00
7/27/2011 0.00
7/28/2011 1.53
7/29/2011 0.11
7/30/2011 0.00
7/31/2011 0.00
8/1/2011 0.00
8/2/2011 0.00
8/3/2011 T
8/4/2011 0.00
8/5/2011 0.00
8/6/2011 0.01
8/7/2011 0.02
8/8/2011 0.51
8/9/2011 1.14
8/10/2011 0.00
8/11/2011 0.00
8/12/2011 0.00
8/13/2011 0.33
8/14/2011 0.82
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 T
8/21/2011 1.01
8/22/2011 0.00
8/23/2011 0.00
8/24/2011 2.05
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 0.27
9/1/2011 0.00
9/2/2011 0.00
9/3/2011 0.16
9/4/2011 0.60
9/5/2011 0.00
9/6/2011 0.00
9/7/2011 0.00
9/8/2011 0.00
9/9/2011 0.00
9/10/2011 0.00
9/11/2011 0.00
9/12/2011 0.00
9/13/2011 0.00
9/14/2011 0.00
9/15/2011 0.00
9/16/2011 0.00
9/17/2011 0.01
9/18/2011 0.00
9/19/2011 0.44
9/20/2011 0.06
9/21/2011 0.00
9/22/2011 0.00
9/23/2011 0.00
9/24/2011 0.00
9/25/2011 T
9/26/2011 0.63
9/27/2011 2.09
9/28/2011 0.18
9/29/2011 0.00
9/30/2011 0.13



Observation Date Observation Time Precipitation Snowfall Snowfall SWE Snow Depth Snow SWE Notes
10/1/2010 6:30 AM 0.00 0.0 M 0.0 M September Total Precip 2.78
10/2/2010 6:30 AM 0.03 0.0 M 0.0 M
10/3/2010 6:30 AM 0.00 0.0 M 0.0 M Frost on roofs, 34 deg F
10/4/2010 6:30 AM 0.00 0.0 M 0.0 M First hard freeze. Ice in birdbath under tree.
10/5/2010 6:30 AM 0.00 0.0 M 0.0 M
10/6/2010 6:30 AM 0.00 0.0 M 0.0 M
10/7/2010 6:30 AM 0.00 0.0 M 0.0 M
10/8/2010 6:30 AM 0.00 0.0 M 0.0 M
10/9/2010 6:30 AM 0.00 0.0 M 0.0 M More dust than grass clippings when mowing
10/10/2010 6:30 AM 0.00 0.0 M 0.0 M
10/11/2010 6:30 AM 0.00 0.0 M 0.0 M
10/12/2010 6:30 AM 0.00 0.0 M 0.0 M
10/13/2010 6:30 AM 0.01 0.0 M 0.0 M About 7 rumbles of thunder heard
10/14/2010 6:30 AM 0.00 0.0 M 0.0 M
10/15/2010 6:30 AM 0.00 0.0 M 0.0 M
10/16/2010 6:30 AM 0.00 0.0 M 0.0 M
10/17/2010 6:30 AM 0.00 0.0 M 0.0 M
10/18/2010 6:30 AM 0.00 0.0 M 0.0 M
10/19/2010 6:30 AM 0.00 0.0 M 0.0 M Frost is the only visible moisture
10/20/2010 6:30 AM 0.00 0.0 M 0.0 M
10/21/2010 6:30 AM 0.00 0.0 M 0.0 M
10/22/2010 6:30 AM 0.00 0.0 M 0.0 M Freeze. 26 deg F
10/23/2010 6:30 AM 0.00 0.0 M 0.0 M
10/24/2010 6:30 AM 0.77 0.0 M 0.0 M Periods of thunder and lightning. Period of heavy rain late Saturday.
10/25/2010 6:30 AM 0.26 0.0 M 0.0 M
10/26/2010 6:30 AM 0.77 0.0 M 0.0 M Wind, Lightning, Thunder, intermittent heavy rain - perfect sleeping weather
10/27/2010 6:30 AM 0.06 0.0 M 0.0 M
10/28/2010 6:30 AM 0.00 0.0 M 0.0 M
10/29/2010 6:30 AM 0.00 0.0 M 0.0 M 26 deg F but little wind
10/30/2010 6:30 AM 0.00 0.0 M 0.0 M
10/31/2010 6:30 AM 0.00 0.0 M 0.0 M
11/1/2010 6:30 AM 0.00 0.0 M 0.0 M
11/2/2010 6:30 AM 0.00 0.0 M 0.0 M
11/3/2010 6:30 AM 0.00 0.0 M 0.0 M No rain as of observation however light rain on drive into Rockford
11/4/2010 6:30 AM 0.02 0.0 M 0.0 M
11/5/2010 6:30 AM 0.18 0.0 M 0.0 M
11/6/2010 6:30 AM 0.00 0.0 M 0.0 M
11/7/2010 6:30 AM 0.00 0.0 M 0.0 M
11/8/2010 6:30 AM 0.00 0.0 M 0.0 M
11/9/2010 6:30 AM 0.00 0.0 M 0.0 M
11/10/2010 6:30 AM 0.00 0.0 M 0.0 M
11/11/2010 6:30 AM T 0.0 M 0.0 M
11/12/2010 6:30 AM 0.08 0.0 M 0.0 M
11/13/2010 6:30 AM 0.05 0.0 M 0.0 M
11/14/2010 6:30 AM 0.12 0.0 M 0.0 M
11/15/2010 6:30 AM T 0.0 M 0.0 M
11/16/2010 6:30 AM 0.03 0.0 M 0.0 M
11/17/2010 6:30 AM T 0.0 M 0.0 M
11/18/2010 6:30 AM 0.00 0.0 M 0.0 M
11/19/2010 6:30 AM 0.00 0.0 M 0.0 M
11/20/2010 6:30 AM 0.00 0.0 M 0.0 M
11/21/2010 6:30 AM T 0.0 M 0.0 M
11/22/2010 6:30 AM 0.08 0.0 M 0.0 M Distant lightning observed about 2:00 am and after observation time
11/23/2010 6:30 AM 1.16 0.0 M 0.0 M No wind damage at station although tornado reported 3 miles south
11/24/2010 6:30 AM 0.00 0.0 M 0.0 M
11/25/2010 6:30 AM 0.13 0.0 M 0.0 M Ice pellets mixed with rain
11/26/2010 6:30 AM 0.00 0.0 M 0.0 M
11/27/2010 6:30 AM 0.00 0.0 M 0.0 M
11/28/2010 6:30 AM 0.00 0.0 M 0.0 M
11/29/2010 6:30 AM 0.00 0.0 M 0.0 M
11/30/2010 6:30 AM 0.37 0.0 M 0.0 M Ceilings lowering, visibility decreasing to about 1 mile at observation
12/1/2010 6:30 AM T T M 0.0 M First snow. Light snow at observation. No accumulation.
12/2/2010 6:30 AM T T M T M
12/3/2010 6:30 AM 0.00 0.0 M 0.0 M
12/4/2010 6:30 AM 0.26 2.6 M 2.5 M
12/5/2010 6:30 AM 0.12 1.4 M 4.0 M Snow on ground is max yesterday afternoon. Settled overnight to 3.5. Frost depth 1 inch.
12/6/2010 6:30 AM 0.00 0.0 M 3.0 M Frost Depth 2 inch under snow
12/7/2010 6:30 AM T T M 3.0 M
12/8/2010 6:30 AM 0.00 0.0 M 3.0 M
12/9/2010 6:30 AM 0.00 0.0 M 3.0 M Frost Depth 3 inch under snow
12/10/2010 6:30 AM 0.06 1.1 M 3.0 M Wind blown snow made measurement a challenge
12/11/2010 6:30 AM 0.00 0.0 M 3.0 M
12/12/2010 6:30 AM 0.47 0.8 M 2.5 M Wind blown snow. Early snow was wet / melting making snow measurment difficult. Water measurement is most reliable.
12/13/2010 6:30 AM 0.03 0.6 M 3.0 M Blowing snow made accurate measurement difficult at best. Frost depth 3 inches under snow.
12/14/2010 6:30 AM 0.00 0.0 M 2.0 M
12/15/2010 6:30 AM 0.00 0.0 M 2.0 M
12/16/2010 6:30 AM 0.00 0.0 M 2.0 M Frost depth 4 inches under snow
12/17/2010 6:30 AM 0.05 1.8 M 4.0 M Settled to 1.1 by morning
12/18/2010 6:30 AM 0.00 0.0 M 3.0 M
12/19/2010 6:30 AM 0.00 0.0 M 2.5 M 5 inch frost depth
12/20/2010 6:30 AM 0.00 0.0 M 2.5 M
12/21/2010 6:30 AM 0.25 3.9 M 6.0 M Thin glaze on top of snow and SE facing surfaces
12/22/2010 6:30 AM T 0.0 M 6.0 M Fog and mist on Tuesday. Frost depth 6 inch.
12/23/2010 6:30 AM T T M 5.0 M
12/24/2010 6:30 AM 0.00 0.0 M 5.0 M
12/25/2010 6:30 AM 0.20 2.2 M 7.0 M
12/26/2010 6:30 AM 0.00 0.0 M 6.0 M
12/27/2010 6:30 AM 0.00 0.0 M 6.0 1.01
12/28/2010 6:30 AM 0.00 0.0 M 6.0 M
12/29/2010 6:30 AM 0.00 0.0 M 5.0 M
12/30/2010 6:30 AM T 0.0 M 4.0 M Fog. Visibility 1/4 mile at observation. Frost depth 4 inch under snow
12/31/2010 6:30 AM 0.01 0.0 M T M Visibility 1/8 mile in fog. Ground 1/2 covered in melting snow.
1/1/2011 6:30 AM 0.01 0.0 M 0.0 M Few snow drifts and piles left
1/2/2011 6:30 AM T T M 0.0 M Occasional snow flurries
1/3/2011 6:30 AM 0.00 0.0 M 0.0 M Frost Depth 3 inch
1/4/2011 6:30 AM 0.03 0.3 M T M
1/5/2011 6:30 AM 0.00 0.0 M T M
1/6/2011 6:30 AM T T M T M
1/7/2011 6:30 AM T T M T M
1/8/2011 6:30 AM T T M T M
1/9/2011 6:30 AM T T M T M Few flakes in the air Sat morning. Frost depth 7 inch
1/10/2011 6:30 AM 0.00 0.0 M T M
1/11/2011 6:30 AM 0.05 0.9 M 1.0 M
1/12/2011 6:30 AM 0.10 0.8 M 2.0 M
1/13/2011 6:30 AM 0.00 0.0 M 2.0 M
1/14/2011 6:30 AM T T M 1.0 M
1/15/2011 6:30 AM 0.01 0.3 M 1.5 M
1/16/2011 6:30 AM T T M 1.0 M Trace show shower before 9 am yesterday
1/17/2011 6:30 AM T T M 1.0 M Snow just starting at observation
1/18/2011 6:30 AM 0.46 3.7 M 5.0 M Significant early blowing then later settling of snow resulting in lower final reading then expected
1/19/2011 6:30 AM T T M 5.0 M
1/20/2011 6:30 AM T T M 5.0 M
1/21/2011 6:30 AM 0.00 0.0 M 5.0 M
1/22/2011 6:30 AM 0.01 0.9 M 5.0 M
1/23/2011 6:30 AM T T M 5.0 M Occsnl snow showers Sat morning after obs
1/24/2011 6:30 AM T 0.1 M 4.5 0.76 Frost Depth 10 inch
1/25/2011 6:30 AM 0.00 0.0 M 5.0 M
1/26/2011 6:30 AM 0.00 0.0 M 4.0 M
1/27/2011 6:30 AM T T M 4.0 M Frost Depth 10 inches
1/28/2011 6:30 AM 0.13 1.3 M 5.5 M
1/29/2011 6:30 AM 0.00 0.0 M 5.0 M
1/30/2011 6:30 AM T 0.1 M 5.0 M
1/31/2011 6:30 AM 0.00 0.0 M 5.0 M Light snow starting at observation
2/1/2011 6:30 AM 0.11 1.6 M 6.0 M
2/2/2011 6:30 AM 0.46 9.0 M 14.0 M Blowing snow leading to uncertain snow measurement. Many drifts over 3 feet.
2/3/2011 6:30 AM T T M 10.0 M Snow compacted during yesterday's blowing
2/4/2011 6:30 AM 0.00 0.0 M 10.0 M
2/5/2011 6:30 AM 0.00 0.0 M 10.0 M
2/6/2011 6:30 AM 0.07 1.2 M 9.5 M Visibility 1/2 mile in snow. Little wind.
2/7/2011 6:30 AM 0.03 0.7 M 10.0 1.80
2/8/2011 6:30 AM 0.05 0.9 M 10.0 M
2/9/2011 6:30 AM 0.00 0.0 M 10.0 M
2/10/2011 6:30 AM 0.00 0.0 M 10.0 M Frost depth 8 inch under sod and snow
2/11/2011 6:30 AM 0.00 0.0 M 10.0 M
2/12/2011 6:30 AM 0.01 0.4 M 9.5 M
2/13/2011 6:30 AM 0.00 0.0 M 9.0 M
2/14/2011 6:30 AM 0.00 0.0 M 7.0 2.64 Frost depth 8 inch
2/15/2011 6:30 AM 0.00 0.0 M 4.0 M
2/16/2011 6:30 AM 0.01 0.0 M 3.5 M
2/17/2011 6:30 AM 0.00 0.0 M 2.0 M Variable snow depth. Fog to south of station toward Rockford.
2/18/2011 6:30 AM 0.00 0.0 M T M Variable remaining snow depth with 40% coverage
2/19/2011 6:30 AM 0.00 0.0 M T M
2/20/2011 6:30 AM T T M T M Ice Pellets started at 6:20 am
2/21/2011 6:30 AM 1.03 0.1 M T M Ice pellets yesterday morning, 1 clap of thunder last evening, 0.1 inch glaze this morning
2/22/2011 6:30 AM 0.04 0.8 M 1.0 M
2/23/2011 6:30 AM T T M T M A few flakes of snow late yesterday
2/24/2011 6:30 AM T T M T M Intermittent light rain and occasional snow pellets
2/25/2011 6:30 AM 0.01 0.3 M 0.5 M
2/26/2011 6:30 AM 0.03 0.6 M 0.5 M
2/27/2011 6:30 AM 0.05 0.3 M 0.5 M Snow, snow pellets, then freezing drizzle
2/28/2011 6:30 AM 0.16 0.5 M 1.0 M Ice pellets, glaze, snow. Frost depth 8 inch
3/1/2011 6:30 AM 0.00 0.0 M T M
3/2/2011 6:30 AM 0.00 0.0 M T M
3/3/2011 6:30 AM 0.00 0.0 M T M 3 inch frost depth. Snow still in shade and drifts
3/4/2011 6:30 AM 0.07 0.0 M 0.0 M
3/5/2011 6:30 AM 1.03 0.6 M 0.5 M Large puddles from late yesterday have soaked in.
3/6/2011 6:30 AM T T M T M Trace of snow after previous day observation. 1 inch frost depth.
3/7/2011 6:30 AM 0.00 0.0 M 0.0 M Snow from drifts and shady spots remains. 1 inch frost depth.
3/8/2011 6:30 AM T T M 0.0 M Few flakes of snow yesterday evening
3/9/2011 6:30 AM 0.34 0.0 M 0.0 M
3/10/2011 6:30 AM 0.07 0.0 M 0.0 M No frost in ground under what was covered with snow
3/11/2011 6:30 AM T T M 0.0 M Few flakes and drizzle yesterday morning
3/12/2011 6:30 AM 0.00 0.0 M 0.0 M
3/13/2011 6:30 AM 0.00 0.0 M 0.0 M Some natural snow drifts remain in shade. Ground that was under snow in sunlight is thawed.
3/14/2011 6:30 AM 0.00 0.0 M 0.0 M
3/15/2011 6:30 AM 0.00 0.0 M 0.0 M
3/16/2011 6:30 AM T 0.0 M 0.0 M Light sprinkles yesterday late afternoon
3/17/2011 6:30 AM 0.00 0.0 M 0.0 M
3/18/2011 6:30 AM T 0.0 M 0.0 M Light sprinkles late afternoon
3/19/2011 6:30 AM 0.00 0.0 M 0.0 M
3/20/2011 6:30 AM T 0.0 M 0.0 M 43 F Soil temp under sod
3/21/2011 6:30 AM 1.53 0.0 M 0.0 M Thunderstorms, pea size hail at 6:50 pm Sun, fog early Mon morning
3/22/2011 6:30 AM 0.08 0.0 M 0.0 M
3/23/2011 6:30 AM 0.59 0.0 M 0.0 M Thunderstorm, evidence of strong winds from garbage cans blown around, 4 inch dia branch down.
3/24/2011 6:30 AM 0.02 T M T M Rain, drizzle, snow, glaze. Surface crust of frozen soil
3/25/2011 6:30 AM 0.00 0.0 M 0.0 M
3/26/2011 6:30 AM 0.00 0.0 M 0.0 M
3/27/2011 6:30 AM T T M 0.0 M Lake effect snow? Ground cooling / freezing again
3/28/2011 6:30 AM 0.00 0.0 M 0.0 M
3/29/2011 6:30 AM 0.00 0.0 M 0.0 M
3/30/2011 6:30 AM 0.00 0.0 M 0.0 M
3/31/2011 6:30 AM 0.00 0.0 M 0.0 M
4/1/2011 6:30 AM 0.00 0.0 M 0.0 M
4/2/2011 6:30 AM 0.35 0.6 M 0.0 M Measured 0.6 snow on snow board, more fell and melted during the hour long moderate snow event that started as rain before noon. Ice pellets during a early evening shower.
4/3/2011 6:30 AM T 0.0 M 0.0 M
4/4/2011 6:30 AM 0.02 0.0 M 0.0 M Thunderstorm but not much rain
4/5/2011 6:30 AM 0.01 0.0 M 0.0 M Scattered evening showers
4/6/2011 6:30 AM 0.00 0.0 M 0.0 M Few sprinkles started after observation
4/7/2011 6:30 AM 0.00 0.0 M 0.0 M Fog visibility of 700 ft variable
4/8/2011 6:30 AM 0.65 0.0 M 0.0 M
4/9/2011 6:30 AM 0.00 0.0 M 0.0 M
4/10/2011 6:30 AM 0.00 0.0 M 0.0 M
4/11/2011 6:30 AM 0.11 0.0 M 0.0 M Some wind at FROPA, elevated cloud to cloud lightning and some rain was the extent of the storm at 10:10 pm. Brown and Deer ticks are out and hungry.
4/12/2011 6:30 AM 0.00 0.0 M 0.0 M
4/13/2011 6:30 AM 0.00 0.0 M 0.0 M
4/14/2011 6:30 AM T 0.0 M 0.0 M
4/18/2011 6:30 AM 0.49 1.6 M 1.5 M Light snow at observation time
4/19/2011 6:30 AM 0.06 0.0 M 0.0 M Ice pellets about 10:30 pm Monday
4/20/2011 6:30 AM 0.89 0.0 M 0.0 M 1/2 inch hail during thunderstorm. Ice pellets and rain occasionially throughout the day.
4/21/2011 6:30 AM 0.00 0.0 M 0.0 M Heavy frost, light haze, no fog
4/22/2011 6:30 AM 0.07 0.0 M 0.0 M
4/23/2011 6:30 AM 0.29 0.0 M 0.0 M Light rain and drizzle throughout the day. Thunder in the evening.
4/24/2011 6:30 AM 0.00 0.0 M 0.0 M
4/25/2011 6:30 AM 0.00 0.0 M 0.0 M
4/26/2011 6:30 AM 0.52 0.0 M 0.0 M
4/27/2011 6:30 AM 0.19 0.0 M 0.0 M
4/28/2011 6:30 AM 0.20 0.0 M 0.0 M
4/29/2011 6:30 AM 0.06 0.0 M 0.0 M Frost
4/30/2011 6:30 AM 0.00 0.0 M 0.0 M
5/1/2011 6:30 AM 0.02 0.0 M 0.0 M
5/2/2011 6:30 AM 0.00 0.0 M 0.0 M
5/3/2011 6:30 AM 0.00 0.0 M 0.0 M Light frost on roofs
5/4/2011 6:30 AM 0.00 0.0 M 0.0 M Showers nearby but nothing at this station
5/5/2011 6:30 AM 0.00 0.0 M 0.0 M
5/6/2011 6:30 AM T 0.0 M 0.0 M
5/7/2011 6:30 AM 0.01 0.0 M 0.0 M
5/8/2011 6:30 AM T 0.0 M 0.0 M
5/9/2011 6:30 AM 0.00 0.0 M 0.0 M
5/10/2011 6:30 AM 0.01 0.0 M 0.0 M
5/11/2011 6:30 AM 0.00 0.0 M 0.0 M 92 F on May 10
5/12/2011 6:30 AM T 0.0 M 0.0 M
5/13/2011 6:30 AM 0.18 0.0 M 0.0 M Thundershower 5:00 to 5:30 am
5/14/2011 6:30 AM 0.45 0.0 M 0.0 M Little evidence of run-off or much ponding. Rain dispersed throughout the day
5/15/2011 6:30 AM 0.10 0.0 M 0.0 M Intermittent light rain throughout the day
5/16/2011 6:30 AM T 0.0 M 0.0 M
5/17/2011 6:30 AM 0.00 0.0 M 0.0 M Hint of frost on roof, 36F, calm
5/18/2011 6:30 AM 0.00 0.0 M 0.0 M Light rain started shortly after observation
5/19/2011 6:30 AM 0.01 0.0 M 0.0 M
5/20/2011 6:30 AM 0.00 0.0 M 0.0 M Areas of intermittent, light ground fog at sunrise
5/21/2011 6:30 AM 0.00 0.0 M 0.0 M
5/22/2011 6:30 AM 0.04 0.0 0.00 M M
5/23/2011 6:30 AM 1.30 0.0 M 0.0 M 1/2 inch hail, trees (4' dia)and large limbs down within 1 mile area, small greenhouse overturned.
5/24/2011 6:30 AM 0.01 M M M M
5/25/2011 6:30 AM 0.22 M M M M
5/26/2011 6:30 AM 0.47 0.0 M 0.0 M
5/27/2011 6:30 AM 0.00 0.0 M 0.0 M Light frost on roofs
5/28/2011 6:30 AM 0.05 0.0 M 0.0 M
5/29/2011 6:30 AM 0.01 0.0 M 0.0 M Visibility 400 ft at observation Fog
5/30/2011 6:30 AM 0.41 0.0 M 0.0 M
5/31/2011 6:30 AM 0.00 0.0 M 0.0 M
6/1/2011 6:30 AM T 0.0 M 0.0 M
6/2/2011 6:30 AM 0.00 0.0 M 0.0 M
6/3/2011 6:30 AM 0.00 0.0 M 0.0 M
6/4/2011 6:30 AM 0.00 0.0 M 0.0 M
6/5/2011 6:30 AM 0.00 0.0 M 0.0 M
6/6/2011 6:30 AM 0.00 0.0 M 0.0 M
6/7/2011 6:30 AM 0.00 0.0 M 0.0 M
6/8/2011 6:30 AM 0.00 0.0 M 0.0 M
6/9/2011 6:30 AM 0.48 0.0 M 0.0 M Thunderstorms last night mostly to north with strong outflow winds. No damage or hail observed. Currently (7:17am) strong storm SE Rockford.
6/10/2011 6:30 AM 0.20 0.0 M 0.0 M
6/11/2011 6:30 AM 0.15 0.0 M 0.0 M Fog, visibility 1/4 mile with drizzle at observation
6/12/2011 6:30 AM T 0.0 M 0.0 M
6/13/2011 6:30 AM 0.00 0.0 M M M
6/14/2011 6:30 AM 0.00 0.0 M 0.0 M
6/15/2011 6:30 AM 0.34 0.0 M 0.0 M Thunderstorm
6/16/2011 6:30 AM 0.42 0.0 M 0.0 M
6/17/2011 6:30 AM 0.00 0.0 M 0.0 M
6/18/2011 6:30 AM 0.00 0.0 M 0.0 M
6/19/2011 6:30 AM 0.00 0.0 M 0.0 M
6/20/2011 6:30 AM 0.00 0.0 M 0.0 M
6/21/2011 6:30 AM 0.08 0.0 M 0.0 M
6/22/2011 6:30 AM 0.26 0.0 M 0.0 M
6/23/2011 6:30 AM 0.09 0.0 M 0.0 M
6/24/2011 6:30 AM 0.02 0.0 M 0.0 M
6/25/2011 6:30 AM 0.00 0.0 M 0.0 M
6/26/2011 6:30 AM T 0.0 M 0.0 M
6/27/2011 6:30 AM 0.00 0.0 M 0.0 M
6/28/2011 6:30 AM 0.07 0.0 M 0.0 M
6/29/2011 6:30 AM 0.00 0.0 M 0.0 M
6/30/2011 6:30 AM 0.00 0.0 M 0.0 M
7/1/2011 6:30 AM 0.00 0.0 M 0.0 M June rain of 2.11 inch. Things are getting dry locally - grass is brown, birch dropping yellow leaves.
7/2/2011 6:30 AM 0.03 0.0 M 0.0 M
7/3/2011 6:30 AM 0.00 0.0 M 0.0 M
7/4/2011 6:30 AM 0.00 0.0 M 0.0 M
7/5/2011 6:30 AM 0.00 0.0 M 0.0 M
7/6/2011 6:30 AM 0.00 0.0 M 0.0 M
7/7/2011 6:30 AM 0.00 0.0 M 0.0 M Grass is turning golden and corn leaves are curling due to locally dry weather
7/8/2011 6:30 AM 0.00 0.0 M 0.0 M
7/9/2011 6:30 AM 0.00 0.0 M 0.0 M
7/10/2011 6:30 AM 0.00 0.0 M 0.0 M
7/11/2011 6:30 AM 0.00 0.0 M 0.0 M Rain started at SE Rockford at 6:57, strong wind, heavy rain at 7:09 am.
7/12/2011 6:30 AM 0.37 0.0 M 0.0 M 8 inch branch broke at station. Wind damage worse to south from near IL 173 to Rockford as evidenced by corn blow down along I-90/39 on way home from work yesterday. Ground fog at sunrise.
7/13/2011 6:30 AM 0.00 0.0 M 0.0 M
7/14/2011 6:30 AM 0.00 0.0 M 0.0 M
7/15/2011 6:30 AM T 0.0 M 0.0 M A few drops of rain about 5:00 pm
7/16/2011 6:30 AM 0.05 0.0 M 0.0 M Light rain at observation
7/17/2011 6:30 AM 0.02 M M M M Rain continued shortly after yesterday's observation
7/18/2011 6:30 AM 0.01 0.0 M 0.0 M
7/19/2011 6:30 AM 0.00 0.0 M 0.0 M
7/20/2011 6:30 AM 0.00 0.0 M 0.0 M
7/21/2011 6:30 AM 0.00 0.0 M 0.0 M Still hot. Still dry.
7/22/2011 6:30 AM 0.44 0.0 M 0.0 M Quick heavy shower mid-day yesterday and a number of short thundershowers during the night. More in the area at observation time. It is most welcomed!
7/23/2011 6:30 AM 2.67 0.0 M 0.0 M Two point six seven with 1.82 from after yesterday's observation until yesterday evening plus 0.85 overnight with almost continuous lightning (mainly cloud to cloud) from 12:40 to 1:40 am. Some wind but no damage seen.
7/24/2011 6:30 AM 0.27 0.0 M 0.0 M Thunderstorm moved to south although still raining at observation
7/25/2011 6:30 AM 0.04 0.0 M 0.0 M
7/26/2011 6:30 AM 0.00 0.0 M 0.0 M
7/27/2011 6:30 AM 0.00 0.0 M 0.0 M Thunder and lightning to close northwest but no rain yet.
7/28/2011 6:30 AM 1.53 0.0 M 0.0 M One point five three from yesterday storms and again last night. Lots of lighting all night.
7/29/2011 5:30 AM 0.11 0.0 M 0.0 M
7/30/2011 6:30 AM 0.00 0.0 M 0.0 M
7/31/2011 6:30 AM 0.00 0.0 M 0.0 M
8/1/2011 6:30 AM 0.00 0.0 M 0.0 M
8/2/2011 6:30 AM 0.00 0.0 M 0.0 M
8/3/2011 6:30 AM T 0.0 M 0.0 M A few drops here. Heavy rain 2 to 8 miles south.
8/4/2011 6:30 AM 0.00 0.0 M 0.0 M
8/5/2011 6:30 AM 0.00 0.0 M 0.0 M
8/6/2011 6:30 AM 0.01 0.0 M 0.0 M
8/7/2011 7:45 AM 0.02 0.0 M 0.0 M
8/8/2011 6:30 AM 0.51 0.0 M 0.0 M Fog visibility down to 250 feet at times
8/9/2011 6:30 AM 1.14 0.0 M 0.0 M Thunder yesterday afternoon, fog early morning, clear at observation.
8/10/2011 6:30 AM 0.00 0.0 M 0.0 M
8/11/2011 6:30 AM 0.00 0.0 M 0.0 M CAVU
8/12/2011 6:30 AM 0.00 0.0 M 0.0 M
8/13/2011 6:30 AM 0.33 0.0 M 0.0 M
8/14/2011 6:30 AM 0.82 0.0 M 0.0 M Occasional heavy showers with lightning yesterday. Clear at observation.
8/15/2011 6:30 AM 0.00 0.0 M 0.0 M
8/16/2011 6:30 AM 0.00 0.0 M 0.0 M
8/17/2011 6:30 AM 0.00 0.0 M M M
8/18/2011 6:30 AM 0.00 0.0 M 0.0 M
8/19/2011 6:30 AM 0.00 0.0 M 0.0 M
8/20/2011 6:30 AM T 0.0 M 0.0 M
8/21/2011 6:30 AM 1.01 0.0 M 0.0 M Tstorm started 8:26am. M0.92 rain in 18 min, M0.73 dia max hail, frequent lighting, strong winds, temporary puddles where they have not been seen before. No significant damage in area except to plants from hail.
8/22/2011 6:30 AM 0.00 0.0 M 0.0 M
8/23/2011 6:30 AM 0.00 0.0 M 0.0 M
8/24/2011 6:30 AM 2.05 0.0 M 0.0 M Usually good well water had air and rust from VA earthquake??
8/25/2011 6:30 AM 0.00 0.0 M 0.0 M
8/26/2011 6:30 AM 0.00 0.0 M 0.0 M Occasional ground fog
8/27/2011 6:30 AM 0.00 0.0 M 0.0 M
8/28/2011 6:30 AM 0.00 0.0 M 0.0 M
8/29/2011 6:30 AM 0.00 0.0 M 0.0 M
8/30/2011 6:30 AM 0.00 0.0 M 0.0 M
8/31/2011 6:30 AM 0.27 0.0 M 0.0 M
9/1/2011 6:30 AM 0.00 0.0 M 0.0 M
9/2/2011 6:30 AM 0.00 0.0 M 0.0 M
9/3/2011 6:30 AM 0.16 0.0 M 0.0 M 0.16 from a few thundershowers Friday morning
9/4/2011 6:30 AM 0.60 0.0 M 0.0 M Occasional thunder all day yesterday. Little wind associated with thundershowers
9/5/2011 6:30 AM 0.00 0.0 M 0.0 M
9/6/2011 6:30 AM 0.00 0.0 M 0.0 M
9/7/2011 6:30 AM 0.00 0.0 M 0.0 M CAVU
9/8/2011 6:30 AM 0.00 0.0 M 0.0 M
9/9/2011 6:30 AM 0.00 0.0 M 0.0 M
9/10/2011 6:30 AM 0.00 0.0 M 0.0 M
9/11/2011 6:30 AM 0.00 0.0 M 0.0 M
9/12/2011 6:30 AM 0.00 0.0 M 0.0 M
9/13/2011 6:30 AM 0.00 0.0 M 0.0 M
9/14/2011 6:30 AM 0.00 0.0 M 0.0 M
9/15/2011 6:30 AM 0.00 0.0 M 0.0 M First frost on roofs was relatively extensive and heavy. Occasional frost in grassy fields. Winds were calm during the night then picked-up a little toward sunrise.
9/16/2011 6:30 AM 0.00 0.0 M 0.0 M
9/17/2011 6:30 AM 0.01 0.0 M 0.0 M
9/18/2011 6:30 AM 0.00 0.0 M 0.0 M
9/19/2011 6:30 AM 0.44 0.0 M 0.0 M Light rain at observation
9/20/2011 6:30 AM 0.06 0.0 M 0.0 M Haze at observation. Patchy dense fog on way to work.
9/21/2011 6:30 AM 0.00 0.0 M 0.0 M
9/22/2011 6:30 AM 0.00 0.0 M 0.0 M
9/23/2011 6:30 AM 0.00 0.0 M 0.0 M
9/24/2011 6:30 AM 0.00 0.0 M 0.0 M
9/25/2011 6:30 AM T 0.0 M 0.0 M
9/26/2011 6:30 AM 0.63 0.0 M 0.0 M Raining at observation time
9/27/2011 6:30 AM 2.09 0.0 M 0.0 M
9/28/2011 6:30 AM 0.18 0.0 M 0.0 M
9/29/2011 6:30 AM 0.00 0.0 M 0.0 M
9/30/2011 6:30 AM 0.13 0.0 M 0.0 M



Start Date End Date & Time Duration in Days Precipitation Snow Depth Snow Depth SWE Notes
4/15/2011 4/17/2011 7:00 PM 3 0.50 0.0 M Apparent strong winds from the east and northwest.



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
4/19/2011 5:37 PM 1/2" Grape 3/8" 1/4" Pea Size Hard|White Ice 8 2min no damage Continuous False After rain After smaller hail 10-20