(11:00PM Tue, Feb 21st 2023) Tuesday night update on the winter storm that will move through the region Wednesday through Thursday, bringing multiple modes of weather to the state. Little to no changes were needed to forecasts with this update.
Timing & Location...
•Severe T'Storm Risk: Early Wednesday morning - Early Wednesday evening, Feb 22nd: Central & Southern Illinois.
•Freezing Rain/Sleet/Ice Pellets: Early Wednesday morning - Thursday midday, Feb 22-23rd: Far Northern Illinois.
•High Winds: Wednesday - Thursday , Feb 22-23rd: Much of Illinois.
•Heavy Rain/Flooding: Early Wednesday morning - Early Wednesday night, Feb 22nd: Northern & Central
•A level 1 severe t'storm risk is in place across Central and Southern Illinois, from early Wednesday morning through early Wednesday evening. Isolated severe t'storms will be possible, posing a risk of damaging winds, hail and an isolated tornado.
•Periods of freezing rain, sleet and ice pellets are expected across far Northern Illinois, early Wednesday morning through Thursday midday. Ice accumulation of a glaze-0.10" to 0.10-0.25"+ is expected, along with a dusting-1" of sleet/ice pellet accumulation.
•Two periods of high winds are expected across all of the state, Wednesday and Thursday. Wind gusts of 30-45MPH are expected, with locally higher wind gusts possible.
•Rainfall is expected across much of the state early Wednesday morning through early Wednesday night, with a corridor of heavy rainfall likely across portions of Northern and Central Illinois. Rainfall totals of 1.00-3.00" are expected in the heavy rainfall axis.
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