A deepening low pressure center tracked from eastern Arkansas across middle Tennessee during the day, then into southeast Kentucky on the evening of the 19th.  As colder air quickly pushed southward, rain changed to snow during the afternoon  hours. Travel impacts were very high due to the combination of high snowfall rates (1 to 2 inches per hour), strong wind gusts of 40 to 50 mph, and rapidly falling temperatures. Roads quickly became snow and ice covered, and visibility was frequently below one-quarter mile for a few hours. Near blizzard conditions were  experienced in many areas for a few hours. There were numerous accidents, and some roads were closed for a while during the heart of the event. I-57 in southern Illinois was among the worst hit, which caused the Illinois State Police to close the interstate from Mount Vernon to Marion on the evening of the 19th. The heaviest snowfall totals were observed along a corridor from the Marion-Carbondale area northeast across Mcleansboro to Mt. Carmel. Widespread snowfall totals of 4 to 6 inches occurred in this corridor, with pockets of 6 to 8 inches from Marion to southwest Hamilton County.  Across the extreme southeast counties of Hardin, Pope, and Massac, snowfall amounts were mainly from 1 to 3 inches. Measuring the snowfall accurately was a challenge due to the strong winds throughout the afternoon and evening hours. Drifting of the snow hindered travel. Convective elements, including thundersnow, produced snowfall rates from one to two inches per hour. Peak wind gusts were measured up to 52 mph at the Carbondale airport and 40 mph at the Carmi airport. Temperatures fell into the mid 20's by the end of the snowstorm, producing wind chills from 10 to 15.

Heavy Snow in WAYNE, ILLINOIS
From 19-JAN-19 14:00:00 to 19-JAN-19 20:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Heavy Snow in EDWARDS, ILLINOIS
From 19-JAN-19 15:00:00 to 19-JAN-19 21:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Heavy Snow in WABASH, ILLINOIS
From 19-JAN-19 15:00:00 to 19-JAN-19 21:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Heavy Snow in ALEXANDER, ILLINOIS
From 19-JAN-19 15:00:00 to 19-JAN-19 20:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Winter Weather in MASSAC, ILLINOIS
From 19-JAN-19 16:00:00 to 19-JAN-19 21:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Heavy Snow in PULASKI, ILLINOIS
From 19-JAN-19 15:00:00 to 19-JAN-19 20:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Winter Weather in POPE, ILLINOIS
From 19-JAN-19 16:00:00 to 19-JAN-19 21:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Heavy Snow in UNION, ILLINOIS
From 19-JAN-19 14:00:00 to 19-JAN-19 20:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Winter Weather in HARDIN, ILLINOIS
From 19-JAN-19 16:00:00 to 19-JAN-19 21:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Heavy Snow in JOHNSON, ILLINOIS
From 19-JAN-19 15:00:00 to 19-JAN-19 20:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Heavy Snow in JACKSON, ILLINOIS
From 19-JAN-19 13:00:00 to 19-JAN-19 20:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Heavy Snow in WILLIAMSON, ILLINOIS
From 19-JAN-19 14:00:00 to 19-JAN-19 20:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Heavy Snow in SALINE, ILLINOIS
From 19-JAN-19 15:00:00 to 19-JAN-19 20:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Heavy Snow in GALLATIN, ILLINOIS
From 19-JAN-19 15:00:00 to 19-JAN-19 21:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Heavy Snow in PERRY, ILLINOIS
From 19-JAN-19 13:00:00 to 19-JAN-19 19:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Heavy Snow in FRANKLIN, ILLINOIS
From 19-JAN-19 13:00:00 to 19-JAN-19 19:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Heavy Snow in HAMILTON, ILLINOIS
From 19-JAN-19 14:00:00 to 19-JAN-19 20:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Heavy Snow in WHITE, ILLINOIS
From 19-JAN-19 15:00:00 to 19-JAN-19 21:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Heavy Snow in JEFFERSON, ILLINOIS
From 19-JAN-19 13:00:00 to 19-JAN-19 19:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter