(3:00PM - 1/27/20) Post storm wrap up regarding the recent Wed-Fri, January 22-25th winter storm that affected the state. During this period, a long duration event occurred, with low to moderate snowfall accumulations across a large portion of the state.
Several distinct periods of precipitation occurred across the state during this multi-day event, which has been broken down in the recap to follow. Marginal thermal profiles and surface temperatures during this period kept snowfall totals in check...from being much higher, as is usual mid-winter setup. Additionally, due to the fact that accumulating snow came in several periods, melting occurred between these said period due to the aforementioned marginal surface temperatures.
Wednesday afternoon-Thursday afternoon...
An initial area of generally light snow moved across much of Northern, Central and Southwest Illinois, Wednesday evening into Thursday afternoon. Upwards of a dusting to 2" of snow occurred across much of Northern, Central and Southwest Illinois during this time.
Thursday afternoon-Friday morning...
A renewed push of precipitation spread across the state Thursday afternoon into Friday morning. Precipitation was predominately snow across Northwest, Western and Southwest Illinois...With mostly rain across Northeast, Eastern and Southwest Illinois. Upwards of 1-3” occurred during this time across Southwest, Western and Northwest Illinois...with amounts tapering to a dusting east of these areas.
Friday morning-Friday evening...
While light snow showers and flurries occurred across Northwest, Western and Southwest Illinois, with light rain showers and drizzle having occurred across Northeast, Eastern and Southwest Illinois.
Friday evening-Saturday afternoon...
Yet another renewed push of precipitation developed, and pivoted across Northern and portions of Central Illinois, Friday evening through Saturday afternoon. Light to moderate snow was common during this time, with brief periods of heavy snow. Upwards of 2-5" of snow occurred across a good portion of Northern Illinois during this time, with isolated higher amounts across far North-Central Illinois near the Illinois/Wisconsin border. Amounts tapered across Central Illinois on up into the Chicago area, to a dusting to 3".
Final multi-day cumulative storm snowfall totals of 2-6" occurred across much of Northern, Central and Southwest Illinois, with locally higher amounts of 6-8" across North-Central Illinois, near the Rockford area. Snowfall amounts tapered to a dusting to 2" from Chicago down into Eastern and Southern Illinois.
Below is a map representation of final snow and rain totals across the state and adjacent areas.
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