A strong storm system in the upper levels of the atmosphere moved east-northeast across the lower and mid Mississippi Valley on President's Day. A round of light snow the night before President's Day produced an inch or two in many locations. The primary period of heavy snow was on President's Day, when snowfall rates averaged one to two inches per hour. Visibility was one-quarter mile or less in the heavy snow. Snowfall totals for the winter storm varied greatly. Sleet brought snowfall totals downward across areas along the Ohio River. Due to extensive blowing and drifting, accurate snowfall amounts were difficult to obtain. The highest average amounts were around 9 inches from the Shawnee hills north and west, including the Carbondale and Marion areas. The lowest amounts were along the Ohio River, where around 5 to 7 inches fell on average. In some cases, narrow bands of heavy snow resulted in sharp differences in storm-total snowfall across a small area.  Impacts were rather high. Most schools and businesses were shut down either due to the storm or the federal holiday. Wind chills were dangerously cold, at times ranging from minus 10 to minus 15. Sub-zero wind chills were observed as far south as Tennessee. Observers reported drifts as high as three to four feet in the open farm country of southern Illinois, making roads impassable to smaller lightweight vehicles. The very cold temperatures hampered removal of the snow.

Winter Storm in ALEXANDER, ILLINOIS
From 14-FEB-21 19:00:00 to 15-FEB-21 21:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Winter Storm in UNION, ILLINOIS
From 14-FEB-21 19:00:00 to 15-FEB-21 21:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Winter Storm in JACKSON, ILLINOIS
From 14-FEB-21 20:00:00 to 15-FEB-21 21:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Winter Storm in PERRY, ILLINOIS
From 14-FEB-21 20:00:00 to 15-FEB-21 21:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Winter Storm in JEFFERSON, ILLINOIS
From 14-FEB-21 20:00:00 to 15-FEB-21 21:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Winter Storm in FRANKLIN, ILLINOIS
From 14-FEB-21 20:00:00 to 15-FEB-21 21:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Winter Storm in WILLIAMSON, ILLINOIS
From 14-FEB-21 20:00:00 to 15-FEB-21 21:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Winter Storm in JOHNSON, ILLINOIS
From 14-FEB-21 20:00:00 to 15-FEB-21 21:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Winter Storm in MASSAC, ILLINOIS
From 14-FEB-21 20:00:00 to 15-FEB-21 21:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Winter Storm in PULASKI, ILLINOIS
From 14-FEB-21 20:00:00 to 15-FEB-21 21:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Winter Storm in POPE, ILLINOIS
From 14-FEB-21 20:00:00 to 15-FEB-21 21:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Winter Storm in SALINE, ILLINOIS
From 14-FEB-21 21:00:00 to 15-FEB-21 21:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Winter Storm in HAMILTON, ILLINOIS
From 14-FEB-21 21:00:00 to 15-FEB-21 21:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Winter Storm in WAYNE, ILLINOIS
From 14-FEB-21 21:00:00 to 15-FEB-21 21:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Winter Storm in EDWARDS, ILLINOIS
From 14-FEB-21 22:00:00 to 15-FEB-21 21:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Winter Storm in WABASH, ILLINOIS
From 14-FEB-21 22:00:00 to 15-FEB-21 21:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Winter Storm in WHITE, ILLINOIS
From 14-FEB-21 22:00:00 to 15-FEB-21 21:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Winter Storm in GALLATIN, ILLINOIS
From 14-FEB-21 22:00:00 to 15-FEB-21 21:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Winter Storm in HARDIN, ILLINOIS
From 14-FEB-21 22:00:00 to 15-FEB-21 21:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter