481
WOUS40 KWNS 091722
PWOSPC
IAZ000-ILZ000-WIZ000-100115-
PUBLIC SEVERE WEATHER OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
1221 PM CDT SUN AUG 09 2009
...SEVERE THUNDERSTORMS EXPECTED OVER PARTS OF THE UPPER MISSISSIPPI
VALLEY INTO THE WESTERN GREAT LAKES THIS AFTERNOON AND TONIGHT...
THE NWS STORM PREDICTION CENTER IN NORMAN OK IS FORECASTING THE
DEVELOPMENT OF LARGE HAIL...AND DAMAGING WINDS OVER PARTS OF THE
UPPER MISSISSIPPI VALLEY AND WESTERN GREAT LAKES THIS AFTERNOON AND
TONIGHT.
THE AREAS MOST LIKELY TO EXPERIENCE THIS ACTIVITY INCLUDE
IOWA
NORTHERN ILLINOIS
SOUTHERN WISCONSIN
ELSEWHERE...SEVERE STORMS ARE ALSO POSSIBLE FROM...THE NORTHERN AND
CENTRAL PLAINS ACROSS THE GREAT LAKES AND INTO PARTS OF THE MID
ATLANTIC REGION.
SEVERE THUNDERSTORMS OVER EASTERN IOWA EARLY THIS AFTERNOON ARE
EXPECTED TO SPREAD INTO SOUTHERN WISCONSIN AND NORTHERN ILLINOIS
THROUGH THE AFTERNOON. THE STORMS HAVE PRODUCED A SWATH OF WIND
DAMAGE AND VERY LARGE HAIL DURING THE MORNING. AS THEY CONTINUE TO
PROGRESS RAPIDLY EASTWARD INTO A VERY HUMID AND UNSTABLE AIR MASS
THIS AFTERNOON...THEY ARE LIKELY TO DEVELOP INTO AN EXPANDING
THUNDERSTORM SYSTEM CAPABLE OF PRODUCING MORE WIDESPREAD WIND
DAMAGE. A STRONG JET STREAM IN THE HIGHER LEVELS OF THE ATMOSPHERE
OVER THE AREA WILL ENHANCE THE SEVERE WEATHER POTENTIAL.
STATE AND LOCAL EMERGENCY MANAGERS ARE MONITORING THIS DEVELOPING
SITUATION. THOSE IN THE THREATENED AREA ARE URGED TO REVIEW SEVERE
WEATHER SAFETY RULES AND TO LISTEN TO RADIO...TELEVISION...AND NOAA
WEATHER RADIO FOR POSSIBLE WATCHES...WARNINGS...AND STATEMENTS LATER
TODAY.
..WEISS.. 08/09/2009
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