Parts of southern Illinois received a winter storm, consisting of two periods of sleet and freezing rain. The winter storm area was generally along and west of a line from Mount Vernon to Marion to Anna-Jonesboro, including Carbondale. Within this area, a period of sleet and freezing rain occurred during the evening of the 23rd, followed by a more significant round of wintry precipitation on the 24th. Ice accumulations ranged from one-quarter to one-third inch, along with about one-half inch of sleet. The precipitation on the 24th was accompanied by frequent thunder and lightning at times. Driving conditions were  hazardous at times. Isolated power outages occurred due to tree damage from freezing rain accretion. Hundreds of customers were without power at the peak of the outages. A tree was uprooted by ice and fell onto a power line several miles southeast of Carbondale. Over the rest of southern Illinois, mainly east of Interstate 57, there was only one round of impactful winter precipitation. This round occurred on the evening of the 23rd, causing travel hazards during the evening commute. The accumulations of sleet and freezing rain in these areas, including Carmi  and Harrisburg, were generally below one-quarter inch. Temperatures on the 24th were just warm enough for little or no impact from the precipitation in this area.
The wintry precipitation was caused by a moist southwest flow aloft, associated with a 500 mb trough over the western Plains. At the same time, surface high pressure advancing from the northern Plains produced a cold northerly surface wind. The cold low levels enabled the precipitation to stay freezing rain and sleet from the Marion-Carbondale area north and west, but temperatures inched above freezing elsewhere. The second round of precipitation on the 24th was enhanced by a low pressure center that tracked northeast across Tennessee.

Winter Weather in EDWARDS, ILLINOIS
From 23-FEB-22 18:00:00 to 23-FEB-22 22:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Winter Weather in WABASH, ILLINOIS
From 23-FEB-22 18:00:00 to 23-FEB-22 22:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Winter Weather in WHITE, ILLINOIS
From 23-FEB-22 18:00:00 to 23-FEB-22 22:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Winter Storm in JEFFERSON, ILLINOIS
From 23-FEB-22 17:00:00 to 24-FEB-22 17:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Winter Storm in UNION, ILLINOIS
From 23-FEB-22 16:00:00 to 24-FEB-22 17:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Winter Storm in JACKSON, ILLINOIS
From 23-FEB-22 17:00:00 to 24-FEB-22 17:00:00 (CST-6)
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Winter Weather in ALEXANDER, ILLINOIS
From 23-FEB-22 16:00:00 to 23-FEB-22 21:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Winter Storm in WILLIAMSON, ILLINOIS
From 23-FEB-22 17:00:00 to 24-FEB-22 17:00:00 (CST-6)
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Winter Weather in PULASKI, ILLINOIS
From 23-FEB-22 16:00:00 to 23-FEB-22 21:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Winter Storm in PERRY, ILLINOIS
From 23-FEB-22 17:00:00 to 24-FEB-22 17:00:00 (CST-6)
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Winter Weather in MASSAC, ILLINOIS
From 23-FEB-22 16:00:00 to 23-FEB-22 21:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Winter Storm in FRANKLIN, ILLINOIS
From 23-FEB-22 17:00:00 to 24-FEB-22 17:00:00 (CST-6)
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Winter Weather in JOHNSON, ILLINOIS
From 23-FEB-22 16:00:00 to 23-FEB-22 21:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Winter Weather in POPE, ILLINOIS
From 23-FEB-22 17:00:00 to 23-FEB-22 21:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Winter Weather in HARDIN, ILLINOIS
From 23-FEB-22 17:00:00 to 23-FEB-22 22:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Winter Weather in SALINE, ILLINOIS
From 23-FEB-22 17:00:00 to 23-FEB-22 21:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Winter Weather in GALLATIN, ILLINOIS
From 23-FEB-22 18:00:00 to 23-FEB-22 22:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Winter Weather in HAMILTON, ILLINOIS
From 23-FEB-22 17:00:00 to 23-FEB-22 22:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Winter Weather in WAYNE, ILLINOIS
From 23-FEB-22 17:00:00 to 23-FEB-22 22:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS