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A winter storm system moved from the Northern Plains into the Upper Mississippi River Valley region on Thursday the 23rd and Friday the 24th of December. Snow began falling across portions of northeast Iowa during the evening hours on Thursday then spread into southeast Minnesota and southwest Wisconsin as the night progressed. Snow continued to fall through much of the day on Friday, however the majority of the accumlating snow had occurred through noon. Significant amounts were able to accumulate by Friday morning (Christmas Eve), which prompted the Winter Weather Advisories to be upgraded to Winter Storm Warnings for portions of northeast Iowa. The heaviest axis of snow fell south of a line from St Ansgar, IA to Elkader, IA where amounts were measured in excess of 6 inches. There were locations that saw up to 11 inches fall by the time the snow moved out of the area by early evening on Friday. North of where the heaviest snow fell, amounts of 3 to 6 inches were common, while locations into west central Wisconsin generally saw less than 3 inches.
There was very little wind accompanying this weather system, which kept blowing or drifting of the snow from being of any concern.
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Storm Total Snowfall
Local Snowfall Map
Regional Snowfall Map
Radar Loop from Thursday Evening through Friday Evening
PUBLIC INFORMATION STATEMENT NATIONAL WEATHER SERVICE LA CROSSE WI 455 PM CST SAT DEC 25 2010 ...STORM TOTAL SNOWFALL FROM DECEMBER 23-24... LOCATION SNOWFALL LAT/LON IOWA ...ALLAMAKEE COUNTY... WAUKON 6.0 43.27N 91.47W DORCHESTER 4.5 43.47N 91.52W WATERVILLE 8S 3.5 43.11N 91.29W ...CHICKASAW COUNTY... N. WASHINGTON 10.5 43.12N 92.42W NEW HAMPTON 1S 10.0 43.04N 92.32W IONIA 8.5 43.03N 92.50W ...CLAYTON COUNTY... STRAWBERRY POINT 7.6 42.69N 91.53W ELKADER 6SSW 7.5 42.79N 91.45W EDGEWOOD 7.0 42.64N 91.4W VOLGA 6.5 42.81N 91.52W GUTTENBERG 6.5 42.79N 91.1W CLAYTON CENTER 4.7 42.88N 91.32W ...FAYETTE COUNTY... OELWEIN 9.5 42.68N 91.91W FAYETTE 9.3 42.85N 91.82W HAWKEYE 7.0 42.94N 91.95W ...FLOYD COUNTY... CHARLES CITY 8.4 43.08N 92.67W ...HOWARD COUNTY... CRESCO 4.2 43.37N 92.11W ...MITCHELL COUNTY... ST ANSGAR 7NW 7.5 43.44N 93.01W RICEVILLE 6.5 43.36N 92.55W ST ANSGAR 6.4 43.37N 92.83W ...WINNESHIEK COUNTY... DECORAH 5.0 43.31N 91.79W SPILLVILLE 4.0 43.20N 91.95W OSSIAN 3.5 43.15N 91.77W MINNESOTA ...DODGE COUNTY... DODGE CENTER 3.0 44.03N 92.86W ...FILLMORE COUNTY... LANESBORO 4.3 43.72N 91.97W PRESTON 4.0 43.67N 92.07W SPRING VALLEY 3E 3.6 43.68N 92.33W WYKOFF 3N 3.4 43.76N 92.27W ...HOUSTON COUNTY... LA CRESCENT 1N 3.0 43.83N 91.31W RENO 3SW 2.9 43.53N 91.33W ...MOWER COUNTY... AUSTIN 2W 6.8 43.67N 93.00W AUSTIN KAAL TV 6.0 43.68N 92.95W GRAND MEADOW 4.0 43.71N 92.56W ...OLMSTED COUNTY... ORONOCO 2E 5.4 44.16N 92.51W ROCHESTER 3NW 3.5 44.03N 92.5W ROCHESTER AIRPORT 3.4 43.91N 92.5W ...WABASHA COUNTY... THEILMAN 7.6 44.28N 92.19W OAK CENTER 6.2 44.35N 92.4W WABASHA 5S 5.5 44.32N 92.05W LAKE CITY 5.0 44.43N 92.28W WABASHA 3.6 44.39N 92.05W ...WINONA COUNTY... ST CHARLES 5N 4.5 44.04N 92.07W LA CRESCENT DAM 7 4.0 43.87N 91.31W MINNESOTA CITY 4.0 44.16N 91.81W ROLLINGSTONE 3.5 44.10N 91.82W WINONA 3.0 44.09N 91.67W WISCONSIN ...ADAMS COUNTY... MONROE CENTER 2.0 44.11N 89.92W ARKDALE 1.7 44.03N 89.88W FRIENDSHIP 1.5 43.98N 89.83W ...BUFFALO COUNTY... ALMA DAM 4 4.5 44.33N 91.92W COCHRANE 3.0 44.22N 91.82W MONDOVI 0.9 44.57N 91.67W ...CLARK COUNTY... NEILLSVILLE 3SW 1.2 44.53N 90.64W OWEN 0.9 44.98N 90.55W ...CRAWFORD COUNTY... LYNXVILLE DAM 9 4.0 43.21N 91.10W PRAIRIE DU CHIEN 3.7 43.03N 91.14W STEUBEN 4SE 3.2 43.13N 90.84W MOUNT ZION 2NW 1.3 43.29N 90.87W ...JACKSON COUNTY... TAYLOR 2.0 44.32N 91.12W BLACK RIVER FALLS STP 1.6 44.29N 90.85W ...JUNEAU COUNTY... NECEDAH 2SE 1.3 44.00N 90.04W ...LA CROSSE COUNTY... LA CROSSE ASOS 3.7 43.88N 91.26W LA CROSSE 4NNW 3.1 43.87N 91.27W LA CROSSE WFO 2.5 43.82N 91.19W WEST SALEM 1.8 43.90N 91.1W ...MONROE COUNTY... TUNNEL CITY 1.6 44.01N 90.57W FOUR CORNERS 1.3 44.07N 90.92W ...RICHLAND COUNTY... RICHLAND CENTER 1NW 2.0 43.36N 90.42W ...TAYLOR COUNTY... MEDFORD 2.0 45.13N 90.34W ...TREMPEALEAU COUNTY... TREMPEALEAU DAM 6 3.5 44.00N 91.44W GALESVILLE 2ESE 2.0 44.08N 91.34W BLAIR 2NW 1.0 44.31N 91.27W ...VERNON COUNTY... GENOA 4.6 43.57N 91.23W LA FARGE 2.6 43.57N 90.64W ONTARIO 3E 2.3 43.72N 90.60W WESTBY 3ENE 2.2 43.68N 90.81W OBSERVATIONS ARE COLLECTED FROM A VARIETY OF SOURCES WITH VARYING EQUIPMENT AND EXPOSURE. NOT ALL DATA LISTED IS CONSIDERED OFFICIAL.