A deepening low pressure center tracked north-northeast from northeast Texas to eastern Missouri, then eventually into Iowa. Strong southeast winds gradually turned into the southwest. Peak gusts were generally from 40 to 45 mph across southern Illinois. A rooftop anemometer at a house near Round Knob in Massac County measured a gust to 52 mph. A 30-foot tower at the same location measured a peak gust of 41 mph.

Strong Wind in POPE, ILLINOIS
From 24-DEC-09 15:00:00 to 25-DEC-09 12:00:00 (CST-6)
Magnitude: 39.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: AWOS

Strong Wind in PULASKI, ILLINOIS
From 24-DEC-09 15:00:00 to 25-DEC-09 12:00:00 (CST-6)
Magnitude: 34.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: AWOS

Strong Wind in SALINE, ILLINOIS
From 24-DEC-09 15:00:00 to 25-DEC-09 12:00:00 (CST-6)
Magnitude: 39.00 MG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: AWOS

Strong Wind in UNION, ILLINOIS
From 24-DEC-09 15:00:00 to 25-DEC-09 12:00:00 (CST-6)
Magnitude: 37.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: ASOS

Strong Wind in WABASH, ILLINOIS
From 24-DEC-09 15:00:00 to 25-DEC-09 12:00:00 (CST-6)
Magnitude: 36.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: AWOS

Strong Wind in WAYNE, ILLINOIS
From 24-DEC-09 15:00:00 to 25-DEC-09 12:00:00 (CST-6)
Magnitude: 34.00 MG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: AWOS

Strong Wind in WHITE, ILLINOIS
From 24-DEC-09 15:00:00 to 25-DEC-09 12:00:00 (CST-6)
Magnitude: 34.00 MG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: AWOS

Strong Wind in EDWARDS, ILLINOIS
From 24-DEC-09 15:00:00 to 25-DEC-09 12:00:00 (CST-6)
Magnitude: 35.00 MG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: AWOS

Strong Wind in FRANKLIN, ILLINOIS
From 24-DEC-09 15:00:00 to 25-DEC-09 12:00:00 (CST-6)
Magnitude: 37.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: AWOS

Strong Wind in GALLATIN, ILLINOIS
From 24-DEC-09 15:00:00 to 25-DEC-09 12:00:00 (CST-6)
Magnitude: 39.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: AWOS

Strong Wind in HAMILTON, ILLINOIS
From 24-DEC-09 15:00:00 to 25-DEC-09 12:00:00 (CST-6)
Magnitude: 34.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: AWOS

Strong Wind in HARDIN, ILLINOIS
From 24-DEC-09 15:00:00 to 25-DEC-09 12:00:00 (CST-6)
Magnitude: 39.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: AWOS

Strong Wind in JACKSON, ILLINOIS
From 24-DEC-09 15:00:00 to 25-DEC-09 12:00:00 (CST-6)
Magnitude: 37.00 MG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: ASOS

Strong Wind in JOHNSON, ILLINOIS
From 24-DEC-09 15:00:00 to 25-DEC-09 12:00:00 (CST-6)
Magnitude: 35.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: AWOS

Strong Wind in ALEXANDER, ILLINOIS
From 24-DEC-09 15:00:00 to 25-DEC-09 12:00:00 (CST-6)
Magnitude: 37.00 MG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: ASOS

Strong Wind in WILLIAMSON, ILLINOIS
From 24-DEC-09 15:00:00 to 25-DEC-09 12:00:00 (CST-6)
Magnitude: 34.00 MG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: AWOS

Strong Wind in MASSAC, ILLINOIS
From 24-DEC-09 15:00:00 to 25-DEC-09 12:00:00 (CST-6)
Magnitude: 45.00 MG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Trained Spotter