A late-season blast of cold air brought sub-freezing temperatures to some areas on the night of the 20th. Lows ranged from 31 to 33 degrees. The arrival of the cold air was heralded by some light snow on the evening of the 19th. Accumulations ranged from a trace to an inch. Across the Ohio River at Paducah, KY, this was the latest measurable snowfall on record. The snow had no societal impact. There were no immediate reports of crop damage due to the cold air. A strong cold front moved southeast across the region on the evening of the 19th. A low pressure system then moved northeast along the front, passing over the Tennessee Valley on the 20th. Gusty north winds on the back side of the low ushered in the cold air.

Frost/Freeze in JOHNSON, ILLINOIS
From 19-APR-21 18:00:00 to 21-APR-21 08:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Frost/Freeze in MASSAC, ILLINOIS
From 19-APR-21 18:00:00 to 21-APR-21 08:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Frost/Freeze in PERRY, ILLINOIS
From 19-APR-21 18:00:00 to 21-APR-21 08:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Frost/Freeze in POPE, ILLINOIS
From 19-APR-21 18:00:00 to 21-APR-21 08:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Frost/Freeze in PULASKI, ILLINOIS
From 19-APR-21 18:00:00 to 21-APR-21 08:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Frost/Freeze in SALINE, ILLINOIS
From 19-APR-21 18:00:00 to 21-APR-21 08:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Frost/Freeze in UNION, ILLINOIS
From 19-APR-21 18:00:00 to 21-APR-21 08:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Frost/Freeze in WABASH, ILLINOIS
From 19-APR-21 18:00:00 to 21-APR-21 08:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Frost/Freeze in WAYNE, ILLINOIS
From 19-APR-21 18:00:00 to 21-APR-21 08:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Frost/Freeze in WHITE, ILLINOIS
From 19-APR-21 18:00:00 to 21-APR-21 08:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Frost/Freeze in WILLIAMSON, ILLINOIS
From 19-APR-21 18:00:00 to 21-APR-21 08:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Frost/Freeze in ALEXANDER, ILLINOIS
From 19-APR-21 18:00:00 to 21-APR-21 08:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Frost/Freeze in EDWARDS, ILLINOIS
From 19-APR-21 18:00:00 to 21-APR-21 08:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Frost/Freeze in FRANKLIN, ILLINOIS
From 19-APR-21 18:00:00 to 21-APR-21 08:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Frost/Freeze in GALLATIN, ILLINOIS
From 19-APR-21 18:00:00 to 21-APR-21 08:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Frost/Freeze in HAMILTON, ILLINOIS
From 19-APR-21 18:00:00 to 21-APR-21 08:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Frost/Freeze in HARDIN, ILLINOIS
From 19-APR-21 18:00:00 to 21-APR-21 08:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Frost/Freeze in JACKSON, ILLINOIS
From 19-APR-21 18:00:00 to 21-APR-21 08:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Frost/Freeze in JEFFERSON, ILLINOIS
From 19-APR-21 18:00:00 to 21-APR-21 08:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS