A strong low pressure system tracked northeast across the St. Louis area into northern Illinois. Strong west winds developed behind a cold front that swept across southern Illinois. West winds were sustained from 20 to 35 mph, with frequent gusts from 40 to 55 mph. Peak wind gusts that were clocked at airport locations included: 48 mph at Mount Vernon and Cairo, 51 mph at Carbondale and Carmi, 45 mph at Marion, 46 mph at Harrisburg, and 50 mph at Mount Carmel. A trained spotter at Metropolis measured a gust to 59 mph. Tree limbs were blown down at isolated locations. A whole tree was blown down in Herrin.

Strong Wind in ALEXANDER, ILLINOIS
From 20-DEC-12 08:00:00 to 20-DEC-12 19:00:00 (CST-6)
Magnitude: 42.00 MG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: AWOS

Strong Wind in EDWARDS, ILLINOIS
From 20-DEC-12 08:00:00 to 20-DEC-12 19:00:00 (CST-6)
Magnitude: 48.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Strong Wind in FRANKLIN, ILLINOIS
From 20-DEC-12 08:00:00 to 20-DEC-12 19:00:00 (CST-6)
Magnitude: 42.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Strong Wind in GALLATIN, ILLINOIS
From 20-DEC-12 08:00:00 to 20-DEC-12 19:00:00 (CST-6)
Magnitude: 42.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Strong Wind in HAMILTON, ILLINOIS
From 20-DEC-12 08:00:00 to 20-DEC-12 19:00:00 (CST-6)
Magnitude: 42.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Strong Wind in HARDIN, ILLINOIS
From 20-DEC-12 08:00:00 to 20-DEC-12 19:00:00 (CST-6)
Magnitude: 42.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Strong Wind in JACKSON, ILLINOIS
From 20-DEC-12 08:00:00 to 20-DEC-12 19:00:00 (CST-6)
Magnitude: 44.00 MG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: ASOS

Strong Wind in JOHNSON, ILLINOIS
From 20-DEC-12 08:00:00 to 20-DEC-12 19:00:00 (CST-6)
Magnitude: 42.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Strong Wind in JEFFERSON, ILLINOIS
From 20-DEC-12 08:00:00 to 20-DEC-12 19:00:00 (CST-6)
Magnitude: 42.00 MG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: AWOS

Strong Wind in PERRY, ILLINOIS
From 20-DEC-12 08:00:00 to 20-DEC-12 19:00:00 (CST-6)
Magnitude: 39.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: AWOS

Strong Wind in POPE, ILLINOIS
From 20-DEC-12 08:00:00 to 20-DEC-12 19:00:00 (CST-6)
Magnitude: 39.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: AWOS

Strong Wind in PULASKI, ILLINOIS
From 20-DEC-12 08:00:00 to 20-DEC-12 19:00:00 (CST-6)
Magnitude: 39.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: AWOS

Strong Wind in SALINE, ILLINOIS
From 20-DEC-12 08:00:00 to 20-DEC-12 19:00:00 (CST-6)
Magnitude: 40.00 MG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: AWOS

Strong Wind in UNION, ILLINOIS
From 20-DEC-12 08:00:00 to 20-DEC-12 19:00:00 (CST-6)
Magnitude: 42.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Strong Wind in WABASH, ILLINOIS
From 20-DEC-12 08:00:00 to 20-DEC-12 19:00:00 (CST-6)
Magnitude: 43.00 MG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: AWOS

Strong Wind in WAYNE, ILLINOIS
From 20-DEC-12 08:00:00 to 20-DEC-12 19:00:00 (CST-6)
Magnitude: 42.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: AWOS

Strong Wind in WHITE, ILLINOIS
From 20-DEC-12 08:00:00 to 20-DEC-12 19:00:00 (CST-6)
Magnitude: 44.00 MG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: AWOS

High Wind in MASSAC, ILLINOIS
From 20-DEC-12 08:00:00 to 20-DEC-12 19:00:00 (CST-6)
Magnitude: 51.00 MG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Strong Wind in WILLIAMSON, ILLINOIS
From 20-DEC-12 08:00:00 to 20-DEC-12 19:00:00 (CST-6)
Magnitude: 39.00 MG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: RAWS