SEVERE THUNDERSTORM WATCH OUTLINE UPDATE FOR WS 719 NWS STORM PREDICTION CENTER NORMAN OK 525 PM CDT TUE AUG 2 2011 SEVERE THUNDERSTORM WATCH 719 IS IN EFFECT UNTIL 100 AM CDT FOR THE FOLLOWING LOCATIONS IL . ILLINOIS COUNTIES INCLUDED ARE BOONE COOK DE KALB DUPAGE FORD GRUNDY IROQUOIS KANE KANKAKEE KENDALL LAKE LA SALLE LEE LIVINGSTON MCHENRY OGLE WILL WINNEBAGO
Storms detected on radar near Rockford approaching as fast as 38 miles per hour in a direction from northwest to southeast. Expected arrival in northwest suburbs by 7:10 p.m. Tuesday.
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Severe Thunderstorm Warning issued for Lake Geneva area, Williams Bay, Fontana at 5:47 p.m. Storms expected to hit Williams Bay about 5:55 p.m. Tuesday.