Hazardous Weather Outlook HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL 408 AM CDT WED JUN 12 2013 ILZ003>006-008-010>014-019>023-032-033-039-INZ001-002-010-011-019- 130915- WINNEBAGO-BOONE-MCHENRY-LAKE ILLINOIS-OGLE-LEE-DE KALB-KANE- DUPAGE-COOK-LA SALLE-KENDALL-GRUNDY-WILL-KANKAKEE-LIVINGSTON- IROQUOIS-FORD-LAKE INDIANA-PORTER-NEWTON-JASPER-BENTON- 408 AM CDT WED JUN 12 2013 /508 AM EDT WED JUN 12 2013/ THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTH CENTRAL ILLINOIS... NORTHEAST ILLINOIS AND NORTHWEST INDIANA. .DAY ONE...TODAY AND TONIGHT. WEATHER HAZARDS EXPECTED: NUMEROUS THUNDERSTORMS...SOME COULD PRODUCE: STRONG TORNADOES DAMAGING WINDS IN EXCESS OF 75 MPH HAIL TO THE SIZE OF BASEBALLS VERY HEAVY RAINFALL WHICH COULD CAUSE FLASH FLOODING AREAS AFFECTED AND TIMING: A CLUSTER OF THUNDERSTORMS OVER IOWA WILL LIKELY BE WEAKENING AS IT MOVES ACROSS FAR NORTHERN ILLINOIS THIS MORNING. SCATTERED THUNDERSTORMS ARE EXPECTED TO REDEVELOP EARLY THIS AFTERNOON OVER NORTHWEST AND NORTH CENTRAL ILLINOIS. THE STORMS ARE EXPECTED TO BECOME MORE WIDESPREAD LATE THIS AFTERNOON AND EVENING AS THEY SPREAD ACROSS NORTHEAST ILLINOIS AND NORTHWEST INDIANA. DISCUSSION: A STRONG UPPER LEVEL DISTURBANCE WILL MOVE ACROSS THE REGION THIS EVENING. LOW PRESSURE AT THE SURFACE WILL MOVE ALONG A NEARLY STATIONARY WARM FRONT ACROSS NORTHERN ILLINOIS AND INDIANA THIS EVENING. A VERY WARM...HUMID AND UNSTABLE AIR MASS WILL BE IN PLACE ALONG AND SOUTH OF THE WARM FRONT. THE COMBINATION OF STRONG INSTABILITY AND STRENGTHENING WIND SHEAR WILL BE FAVORABLE FOR A SIGNIFICANT SEVERE WEATHER OUTBREAK FROM MID AFTERNOON THROUGH THIS EVENING. IN ADDITION... HEAVY RAINFALL...MAINLY ALONG AND NORTH OF THE I-80 CORRIDOR WILL LEAD TO THE POTENTIAL FOR FLASH FLOODING LATE THIS AFTERNOON AND TONIGHT. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY. THERE IS AN INCREASED RISK FOR RIP CURRENTS THURSDAY. THERE IS A CHANCE OF THUNDERSTORMS SATURDAY THROUGH MONDAY. .SPOTTER INFORMATION STATEMENT... SPOTTERS WILL LIKELY BE NEEDED THIS AFTERNOON AND EVENING. forecast.weather.gov/showsigwx.php?warnzone=ILZ023&warncounty=ILC091&firewxzone=ILZ023&local_place1=&product1=Hazardous+Weather+Outlook#.UbiTMJ0o6Uk
Posted on: Wed, 12 Jun 2013 15:27:49 +0000
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