A disturbance in the upper atmosphere moved out of the southern Plains Sunday night, January 14th, and tracked northeast into the Upper Mississippi River Valley by Monday morning (the 15th). Meanwhile, an area of low pressure at the surface developed to the east of this disturbance, and moved into northern Ohio by Monday morning. Moisture was wrapped around this low, extending well west of it into Iowa, Minnesota, and Wisconsin. The combination of the increase in moisture and the approaching disturbance led to areas of snow spreading into western Iowa Sunday afternoon, and then into southern Minnesota, northern Illinois, and most of Wisconsin that night. The snow persisted into Monday morning, shifting across eastern Wisconsin Monday afternoon as the whole system transitioned east.
Snow was very light and fluffy with the cold air in place, leading to appreciable accumulations despite rather low liquid amounts. See the detailed listing below for amounts across the local area.
PUBLIC INFORMATION STATEMENT NATIONAL WEATHER SERVICE LA CROSSE WI 736 PM CST MON JAN 15 2007
LOCATION COUNTY SNOWFALL
...IOWA... NORA SPRINGS 1SW FLOYD 5.2 ST ANSGAR MITCHELL 5.0 WAUKON 8NW ALLAMAKEE 5.0 DECORAH 9NE WINNESHIEK 4.5 DORCHESTER ALLAMAKEE 3.7 ELMA HOWARD 3.7 FAYETTE FAYETTE 3.7 WEST UNION FAYETTE 3.5 OSAGE MITCHELL 3.5 IONIA 2W CHICKASAW 3.3 CRESCO HOWARD 3.0 EDGEWOOD CLAYTON 3.0 NEW HAMPTON CHICKASAW 3.0 CHARLES CITY COOP FLOYD 2.9 ELKADER 6SSW CLAYTON 2.8 LANSING 4SE ALLAMAKEE 2.8 WAUCOMA 3N WINNESHIEK 2.5 OELWEIN 1E FAYETTE 1.5
...MINNESOTA... HAMMOND 1S WABASHA 8.0 MANTORVILLE 3E DODGE 7.8 ORONOCO OLMSTED 7.1 ORONOCO 5W OLMSTED 7.0 ELBA TOWNSHIP WINONA 7.0 BYRON OLMSTED 6.8 MANTORVILLE 1E DODGE 6.8 BYRON 3N OLMSTED 6.6 THEILMAN 1SSW WABASHA 6.4 ALTURA 5W WINONA 6.0 AUSTIN 3S MOWER 6.0 ZUMBRO FALLS WABASHA 5.8 GRAND MEADOW MOWER 5.6 LA CRESCENT 1N HOUSTON 5.5 WABASHA WABASHA 5.4 STEWARTVILLE OLMSTED 5.3 OAK CENTER WABASHA 5.3 ROCHESTER AP 2NE OLMSTED 5.3 AUSTIN MOWER 5.0 SPRING VALLEY FILLMORE 5.0 DODGE CENTER DODGE 5.0 PRESTON FILLMORE 4.6 ELGIN 2SSW OLMSTED 4.4 WINONA 1SE WINONA 4.3 HOUSTON 5E HOUSTON 4.3 ST. CHARLES WINONA 4.0 LYLE MOWER 4.0 CALEDONIA HOUSTON 3.6 LANESBORO FILLMORE 3.4 WINONA DAM 5A WINONA 3.0 SPRING GROVE 4N HOUSTON 2.3
...WISCONSIN... BIG FLATS ADAMS 6.0 MAUSTON ADAMS 6.0 MATHER 3NW JACKSON 6.0 MONDOVI 6S BUFFALO 6.0 HOLLAND LA CROSSE 6.0 NEW LISBON JUNEAU 6.0 LA CROSSE WFO LA CROSSE 5.7 FOUR CORNERS MONROE 5.5 LA CROSSE AIRPORT LA CROSSE 5.2 GALESVILLE 1E TREMPEALEAU 5.0 LA CROSSE LA CROSSE 5.0 OSSEO TREMPEALEAU 5.0 NEILLSVILLE 4NNE CLARK 5.0 ETTRICK 5SE TREMPEALEAU 5.0 HIXTON 5W JACKSON 5.0 TAYLOR JACKSON 5.0 WEST SALEM 1NW LA CROSSE 5.0 STODDARD 3NE VERNON 5.0 BLAIR TREMPEALEAU 4.5 HOLMEN 2S LA CROSSE 4.5 FENNIMORE GRANT 4.5 WILTON MONROE 4.5 JUMP RIVER 3E TAYLOR 4.3 BLACK RIVER FALLS JACKSON 4.3 LA CROSSE 4NNW LA CROSSE 4.1 WARRENS 5WSW MONROE 4.1 ELK MOUND DUNN 4.0 HATFIELD JACKSON 4.0 NEILLSVILLE 3SW CLARK 4.0 TUNNEL CITY 1S MONROE 4.0 NECEDAH 3SE JUNEAU 4.0 VICTORY VERNON 4.0 SPARTA MONROE 3.8 LA FARGE VERNON 3.6 WESTBY 3ENE VERNON 3.6 HILLSBORO VERNON 3.5 MEDFORD TAYLOR 3.5 LONGWOOD CLARK 3.5 LANCASTER GRANT 3.5 PLATTEVILLE GRANT 3.2 WESTBORO 4E TAYLOR 3.2 OWEN 2N CLARK 3.1 MONROE CENTER ADAMS 3.0 GOODRICH 1E TAYLOR 3.0 NECEDAH 2SE JUNEAU 3.0 VIROQUA VERNON 3.0 FRIENDSHIP ADAMS 2.7 GAYS MILLS CRAWFORD 2.5 CUBA CITY 2NW GRANT 2.5 STEUBEN CRAWFORD 2.5 STEUBEN 4SE CRAWFORD 2.3 PRAIRIE DU CHIEN CRAWFORD 2.1 RICHLAND CENTER RICHLAND 2.1 READSTOWN VERNON 2.0
OBSERVATIONS ARE COLLECTED FROM A VARIETY OF SOURCES WITH VARYING EQUIPMENT AND EXPOSURE. NOT ALL DATA LISTED IS CONSIDERED OFFICIAL.
$$ TMS/BROOKS/THOMPSON
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