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Illinois received 4.07 inches of rain during
October 1–17, leading to increases in soil moisture levels at
depths from 2 to 39 inches.
Soil moisture at 2 inches doubled to a state average of 0.29
water fraction by volume (wfv) on October 17. Northern Illinois
had some of the largest changes in soil moisture. Levels at a
station in DeKalb County increased 180 percent during this time.
However, improvements occurred at all locations in Illinois.
Soil moisture also improved at depths of 4, 8, 20, and 39 inches
during the first part of October, while levels at 59 inches
remained steady.
Soil temperatures at depths of 4 inches under sod declined 6.7
degrees in early October to a state average of 59.9 degrees on
October 17. Under bare soil, soil temperatures fell 11.6 and
11.0 degrees at depths of 2 and 4 inches, respectively.
[Lisa A. Sheppard]
The Illinois State Water Survey’s
WARM Program collects hourly and daily weather and soil
information at 19 stations across the state. Daily and monthly
summaries can be found at the WARM website
(http://www.isws.illinois.edu/warm/) and in the Illinois Water
and Climate Summary
(http://www.isws.illinois.edu/warm/climate.asp).
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