The combination of south winds, above normal temperatures, and snow melt resulted in the formation of a long-duration dense fog event across south-central and southeast Wisconsin.  Visibilities were reduced to 1/16 to 1/4 mile while there was occasional light rain, or light snow, or light drizzle.  The media noted a few vehicle accidents and some airplane flights were delayed or cancelled at the major airports in Madison and Milwaukee.  Overnight low temperatures dropped to only the mid 30s to mid 40s.  Milwaukee tied its record daily maximum temperature of 51F on December 26th.  Madison's maximum temperature of 49F on December 27th was one degree short of their record daily high.  On the 27th, maximum temperatures across south-central and southeast Wisconsin ranged from 42 at Juneau (Dodge Co.) to 58 in Kenosha (Kenosha Co.).  Normals for this time of the year are 25 to 30 for maximum temperatures and 10 to 18 for minimum temperatures.  The precipitation and snowmelt that occurred during this dense fog event ultimately resulted in river flooding along the major rivers in southeast Wisconsin from December 27th through the end of the month or even into early January, 2009.  Water levels exceeded flood stage by 2.56 feet at New Munster on the Fox River in western Kenosha County.  In Racine County, the Root River Canal near Raymond exceeded flood stage by 1.53 feet.  Some bottomland roads were closed, but no damage was reported to residential homes or businesses.

Dense Fog in SHEBOYGAN, WISCONSIN
From 26-DEC-08 10:00:00 to 27-DEC-08 18:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Dense Fog in GREEN LAKE, WISCONSIN
From 26-DEC-08 10:00:00 to 27-DEC-08 18:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Dense Fog in FOND DU LAC, WISCONSIN
From 26-DEC-08 10:00:00 to 27-DEC-08 18:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Dense Fog in WAUKESHA, WISCONSIN
From 26-DEC-08 10:00:00 to 27-DEC-08 18:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Dense Fog in MILWAUKEE, WISCONSIN
From 26-DEC-08 10:00:00 to 27-DEC-08 18:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Dense Fog in MARQUETTE, WISCONSIN
From 26-DEC-08 10:00:00 to 27-DEC-08 18:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Dense Fog in SAUK, WISCONSIN
From 26-DEC-08 10:00:00 to 27-DEC-08 18:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Dense Fog in COLUMBIA, WISCONSIN
From 26-DEC-08 10:00:00 to 27-DEC-08 18:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Dense Fog in DODGE, WISCONSIN
From 26-DEC-08 10:00:00 to 27-DEC-08 18:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Dense Fog in WASHINGTON, WISCONSIN
From 26-DEC-08 10:00:00 to 27-DEC-08 18:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Dense Fog in OZAUKEE, WISCONSIN
From 26-DEC-08 10:00:00 to 27-DEC-08 18:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Dense Fog in IOWA, WISCONSIN
From 26-DEC-08 10:00:00 to 27-DEC-08 18:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Dense Fog in DANE, WISCONSIN
From 26-DEC-08 10:00:00 to 27-DEC-08 18:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Dense Fog in JEFFERSON, WISCONSIN
From 26-DEC-08 10:00:00 to 27-DEC-08 18:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Dense Fog in ROCK, WISCONSIN
From 26-DEC-08 10:00:00 to 27-DEC-08 18:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Dense Fog in WALWORTH, WISCONSIN
From 26-DEC-08 10:00:00 to 27-DEC-08 18:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Dense Fog in RACINE, WISCONSIN
From 26-DEC-08 10:00:00 to 27-DEC-08 18:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Dense Fog in KENOSHA, WISCONSIN
From 26-DEC-08 10:00:00 to 27-DEC-08 18:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Dense Fog in LAFAYETTE, WISCONSIN
From 26-DEC-08 10:00:00 to 27-DEC-08 18:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Dense Fog in GREEN, WISCONSIN
From 26-DEC-08 10:00:00 to 27-DEC-08 18:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS