An initial period of light snow impacted mainly southwest Illinois during the early morning hours on the 17th. After a lull, snow spread northeastward from Tennessee and Arkansas during the late afternoon and early evening hours. The most concentrated area of snow occurred across extreme southeast Illinois during the evening and overnight hours. The last snow band pivoted across the region during the morning of the 18th. Snowfall totals ranged from 1 to 3 inches. The highest totals were along the Ohio River, tapering to less than an inch in the Mount Vernon area. With temperatures well below freezing, snow quickly accumulated on roads and created treacherous travel conditions from the evening of the 17th through the morning of the 18th. Following on the heels of a major winter storm on the 15th, a mid level short wave shifted eastward into the Plains as surface low pressure lifted east northeast out of the northern Gulf and into the southeastern part of the country. Plenty of cold air remained in place for the precipitation type to be all snow with this system.

Winter Weather in ALEXANDER, ILLINOIS
From 17-FEB-21 06:00:00 to 18-FEB-21 07:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Winter Weather in UNION, ILLINOIS
From 17-FEB-21 06:00:00 to 18-FEB-21 07:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Winter Weather in HAMILTON, ILLINOIS
From 17-FEB-21 20:00:00 to 18-FEB-21 08:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Winter Weather in WAYNE, ILLINOIS
From 17-FEB-21 22:00:00 to 18-FEB-21 08:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Winter Weather in JACKSON, ILLINOIS
From 17-FEB-21 08:00:00 to 18-FEB-21 08:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Winter Weather in PULASKI, ILLINOIS
From 17-FEB-21 07:00:00 to 18-FEB-21 06:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Winter Weather in WHITE, ILLINOIS
From 17-FEB-21 20:00:00 to 18-FEB-21 08:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Winter Weather in EDWARDS, ILLINOIS
From 17-FEB-21 22:00:00 to 18-FEB-21 08:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Winter Weather in MASSAC, ILLINOIS
From 17-FEB-21 08:00:00 to 18-FEB-21 06:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Winter Weather in JOHNSON, ILLINOIS
From 17-FEB-21 08:00:00 to 18-FEB-21 06:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Winter Weather in WABASH, ILLINOIS
From 17-FEB-21 22:00:00 to 18-FEB-21 08:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Winter Weather in WILLIAMSON, ILLINOIS
From 17-FEB-21 08:00:00 to 18-FEB-21 08:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Winter Weather in POPE, ILLINOIS
From 17-FEB-21 08:00:00 to 18-FEB-21 08:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Winter Weather in HARDIN, ILLINOIS
From 17-FEB-21 17:00:00 to 18-FEB-21 08:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Winter Weather in SALINE, ILLINOIS
From 17-FEB-21 17:00:00 to 18-FEB-21 08:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Winter Weather in GALLATIN, ILLINOIS
From 17-FEB-21 19:00:00 to 18-FEB-21 08:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Winter Weather in PERRY, ILLINOIS
From 17-FEB-21 20:00:00 to 18-FEB-21 08:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Winter Weather in FRANKLIN, ILLINOIS
From 17-FEB-21 20:00:00 to 18-FEB-21 08:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Winter Weather in JEFFERSON, ILLINOIS
From 17-FEB-21 22:00:00 to 18-FEB-21 08:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter