Warmer air flowing over a snow-covered ground caused dense fog to form, which lasted for about a 36 hour period. The dense fog developed on December 20, 2007 and finally disippated on December 22. Visibilities were frequently at or below 1/4 mile during this period. Numerous schools either cancelled or delayed classes for two days. Also, aviation was impacted, with many flights cancelled or delayed. The Iowa DOT urged no travel in southeast Iowa during the evening hours on December 20, as visibilities were frequently near zero. A car slammed into the back of a semi-truck on I-80 in Bettendorf, Iowa at 8 am on December 21 in the dense fog. Two people were injured in the accident.

Dense Fog in LOUISA, IOWA
From 20-DEC-07 18:00:00 to 22-DEC-07 10:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Dense Fog in SCOTT, IOWA
From 20-DEC-07 19:30:00 to 22-DEC-07 08:10:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

The dense fog contributed to an accident on I-80 in Bettendorf, Iowa on December 21 at 8 am. A car slammed into the back of a semi-truck, resulting in the indirect injuries to two people. The visibility at the time of the accident was near zero.

Dense Fog in VAN BUREN, IOWA
From 20-DEC-07 07:00:00 to 21-DEC-07 22:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Dense Fog in WASHINGTON, IOWA
From 20-DEC-07 14:15:00 to 22-DEC-07 11:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Dense Fog in MUSCATINE, IOWA
From 20-DEC-07 18:15:00 to 22-DEC-07 10:40:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Dense Fog in HENRY, IOWA
From 20-DEC-07 17:15:00 to 21-DEC-07 19:15:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Dense Fog in BUCHANAN, IOWA
From 20-DEC-07 17:00:00 to 22-DEC-07 10:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Dense Fog in DUBUQUE, IOWA
From 20-DEC-07 20:40:00 to 22-DEC-07 15:50:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Dense Fog in CLINTON, IOWA
From 20-DEC-07 21:55:00 to 22-DEC-07 16:55:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Dense Fog in DELAWARE, IOWA
From 20-DEC-07 20:45:00 to 22-DEC-07 15:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Dense Fog in DES MOINES, IOWA
From 20-DEC-07 13:25:00 to 21-DEC-07 21:15:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Dense Fog in IOWA, IOWA
From 20-DEC-07 15:30:00 to 22-DEC-07 09:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Dense Fog in KEOKUK, IOWA
From 20-DEC-07 12:00:00 to 22-DEC-07 06:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Dense Fog in JONES, IOWA
From 20-DEC-07 21:55:00 to 22-DEC-07 12:30:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Dense Fog in LEE, IOWA
From 20-DEC-07 13:15:00 to 21-DEC-07 21:15:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Dense Fog in LINN, IOWA
From 20-DEC-07 15:00:00 to 22-DEC-07 10:55:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Dense Fog in JACKSON, IOWA
From 20-DEC-07 22:00:00 to 22-DEC-07 16:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Dense Fog in JEFFERSON, IOWA
From 20-DEC-07 07:35:00 to 21-DEC-07 23:35:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Dense Fog in JOHNSON, IOWA
From 20-DEC-07 18:00:00 to 22-DEC-07 10:50:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Dense Fog in CEDAR, IOWA
From 20-DEC-07 21:00:00 to 22-DEC-07 12:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Dense Fog in BENTON, IOWA
From 20-DEC-07 16:15:00 to 22-DEC-07 08:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter