Midwest Storm Spotters League

URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI249 PM CST SUN JAN 20 2013...BITTERLY COLD WIND CHILLS LATER TONIGHT INTO TUESDAY....A PRESSURE GRADIENT BELOW LOW PRESSURE TO THE EAST AND HIGHPRESSURE TO OUR WEST WILL RESULT IN ARCTIC AIR BEING CHANNELEDINTO SOUTHERN WISCONSIN ON NORTHWEST WINDS. THIS WILL RESULT INWIND CHILLS AT OR BELOW 20 BELOW ZERO LATER TONIGHT IN SOUTHCENTRAL AND PARTS OF EAST CENTRAL WISCONSIN...WITH WIND CHILLS OF20 TO 30 BELOW ZERO ACROSS ALL OF SOUTHERN WISCONSIN MONDAY NIGHTINTO TUESDAY MORNING.WIZ046-047-051-052-056-057-062-063-067-068-210500-/O.NEW.KMKX.WC.Y.0001.130121T1000Z-130122T1800Z/MARQUETTE-GREEN LAKE-FOND DU LAC-SHEBOYGAN-SAUK-COLUMBIA-IOWA-DANE-LAFAYETTE-GREEN-INCLUDING THE CITIES OF...MONTELLO...BERLIN...FOND DU LAC...SHEBOYGAN...BARABOO...PORTAGE...WISCONSIN DELLS...DODGEVILLE...MADISON...DARLINGTON...MONROE249 PM CST SUN JAN 20 2013...WIND CHILL ADVISORY IN EFFECT FROM 4 AM MONDAY TO NOON CSTTUESDAY...THE NATIONAL WEATHER SERVICE IN MILWAUKEE/SULLIVAN HAS ISSUED AWIND CHILL ADVISORY...WHICH IS IN EFFECT FROM 4 AM MONDAY TO NOONCST TUESDAY.* TIMING...LATE TONIGHT THROUGH MIDDAY TUESDAY.* WIND CHILL VALUES...COLDEST VALUES 18 TO 24 BELOW LATER TONIGHT INTO MONDAY MORNING AND THEN 20 TO 30 BELOW ZERO MONDAY NIGHT INTO TUESDAY MORNING.* IMPACTS...WITH WIND CHILL VALUES THIS LOW...FROSTBITE TO EXPOSED SKIN CAN OCCUR IN 20 TO 30 MINUTES.