000
FLUS43 KLOT 121642
HWOLOT

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
1142 AM CDT WED JUN 12 2013

ILZ003>006-008-010>014-019>023-032-033-039-INZ001-002-010-011-019-
131645-
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-
1142 AM CDT WED JUN 12 2013 /1242 PM EDT WED JUN 12 2013/

THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTH CENTRAL ILLINOIS...
NORTHEAST ILLINOIS AND NORTHWEST INDIANA.

.DAY ONE...THIS AFTERNOON AND TONIGHT.

  WEATHER HAZARDS EXPECTED:

  NUMEROUS SEVERE THUNDERSTORMS...SOME COULD PRODUCE:
   STRONG TORNADOES
   DAMAGING WINDS IN EXCESS OF 75 MPH
   ISOLATED HAIL TO THE SIZE OF BASEBALLS
   VERY HEAVY RAINFALL WHICH COULD CAUSE FLASH FLOODING

  AREAS AFFECTED AND TIMING:

 WHILE A FEW SCATTERED THUNDERSTORMS MAY DEVELOP ACROSS THE AREA
 EARLY THIS AFTERNOON...THE MAIN AREA OF SEVERE STORMS ARE
 ANTICIPATED TO DEVELOP ACROSS FAR EASTERN IOWA...SOUTHWEST
 WISCONSIN...AND NORTHWEST ILLINOIS DURING MID AFTERNOON. THESE
 STORMS WILL EVOLVE EAST ACROSS NORTH CENTRAL ILLINOIS...INCLUDING
 THE ROCKFORD AREA...LATER THIS AFTERNOON. THESE STORMS WILL HAVE
 A TORNADIC THREAT. THE STORMS WILL MOVE EAST THROUGH THIS EVENING
 ACROSS ALL OF NORTHERN ILLINOIS AND INTO NORTHWEST INDIANA. THE
 TIMING FOR THE STRONGEST THUNDERSTORMS WITH THE GREATEST
 PROBABILITY TO PRODUCE SEVERE WEATHER TO IMPACT THE CHICAGOLAND
 AREA WILL LIKELY OCCUR BETWEEN 6 AND 11 PM. THESE STORMS WILL
 PRIMARILY HAVE A DAMAGING WIND THREAT...BUT THEY WILL BE CAPABLE
 OF PRODUCING TORNADOES AND LARGE HAIL AS WELL. WHILE ALL STORMS
 WILL BE CAPABLE OF HEAVY RAIN TODAY...THE GREATEST FLASH FLOOD
 THREAT WILL LIKELY BE ALONG AND NORTH OF THE I-80 CORRIDOR IN
 NORTHERN ILLINOIS...ALL OF CHICAGOLAND AND THE ROCKFORD METRO
 AREA...AND FAR NORTHWEST INDIANA.

  DISCUSSION:

 LOW PRESSURE WILL MOVE EAST ALONG A 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 LIKELY LEAD TO A SIGNIFICANT SEVERE WEATHER
 OUTBREAK FROM MID AFTERNOON THROUGH THIS EVENING ACROSS THE
 REGION. THE DAMAGING WIND THREAT IS THE HIGHEST...ESPECIALLY IN
 CLUSTERS OR COMPLEXES OF STORMS THAT DEVELOP. 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...

SPOTTER ACTIVATION WILL BE NEEDED ACROSS NORTH CENTRAL ILLINOIS
LATE THIS AFTERNOON AND INTO AT LEAST EARLY EVENING. ACTIVATION IS
MOST LIKELY ACROSS NORTHEAST ILLINOIS AND NORTHWEST INDIANA THIS
EVENING.

&&

$$

LMZ740>745-131645-
WINTHROP HARBOR TO WILMETTE HARBOR-
WILMETTE HARBOR TO NORTHERLY ISLAND-
NORTHERLY ISLAND TO CALUMET HARBOR-CALUMET HARBOR TO GARY-
GARY TO BURNS HARBOR-BURNS HARBOR TO MICHIGAN CITY-
1142 AM CDT WED JUN 12 2013

THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE ILLINOIS NEARSHORE
WATERS OF LAKE MICHIGAN AND THE INDIANA NEARSHORE WATERS OF LAKE
MICHIGAN.

.DAY ONE...THIS AFTERNOON AND TONIGHT.

THUNDERSTORMS ARE LIKELY. SOME STORMS MAY PRODUCE WIND GUSTS IN
EXCESS OF 50 KTS AND LARGE HAIL...LATE THIS AFTERNOON AND THIS
EVENING.

STRONG WINDS AND HIGH WAVES WILL LEAD TO HAZARDOUS CONDITIONS FOR
SMALL CRAFT LATE TONIGHT.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY.

STRONG WINDS AND HIGH WAVES WILL LEAD TO HAZARDOUS CONDITIONS FOR
SMALL CRAFT THROUGH THURSDAY ACROSS NORTHERN ILLINOIS...AND
THROUGH THURSDAY EVENING ACROSS NORTHWEST INDIANA.

THERE IS A CHANCE OF THUNDERSTORMS SATURDAY THROUGH MONDAY.

&&

$$

LMZ080-261-362-364-366-563-565-567-669-671-673-675-777-779-868-
870-872-874-876-878-131645-
LAKE MICHIGAN FROM MICHIGAN CITY IN TO ST. JOSEPH MI 5 NM
OFFSHORE TO MID LAKE-
LAKE MICHIGAN FROM SEUL CHOIX POINT TO ROCK ISLAND PASSAGE 5 NM
OFFSHORE TO MID LAKE-
LAKE MICHIGAN SOUTH OF A LINE FROM SEUL CHOIX POINT TO THE
MACKINAC BRIDGE AND NORTH OF A LINE FROM CHARLEVOIX MI TO SOUTH
FOX ISLAND 5 NM OFFSHORE-
LAKE MICHIGAN FROM CHARLEVOIX TO POINT BETSIE MI 5 NM OFFSHORE TO
MID LAKE-
LAKE MICHIGAN FROM POINT BETSIE TO MANISTEE MI 5 NM OFFSHORE TO
MID LAKE-
LAKE MICHIGAN FROM ROCK ISLAND PASSAGE TO STURGEON BAY WI-
LAKE MICHIGAN FROM STURGEON BAY TO TWO RIVERS WI 5 NM OFFSHORE TO
MID LAKE-
LAKE MICHIGAN FROM TWO RIVERS TO SHEBOYGAN WI 5 NM OFFSHORE TO
MID LAKE-
LAKE MICHIGAN FROM SHEBOYGAN TO PORT WASHINGTON WI 5 NM OFFSHORE
TO MID LAKE-
LAKE MICHIGAN FROM PORT WASHINGTON TO NORTH POINT LIGHT WI 5 NM
OFFSHORE TO MID LAKE-
LAKE MICHIGAN FROM NORTH POINT LIGHT TO WIND POINT WI 5 NM
OFFSHORE TO MID LAKE-
LAKE MICHIGAN FROM WIND POINT WI TO WINTHROP HARBOR IL 5 NM
OFFSHORE TO MID LAKE-
LAKE MICHIGAN FROM WINTHROP HARBOR TO WILMETTE HARBOR IL 5 NM
OFFSHORE TO MID LAKE-
LAKE MICHIGAN FROM WILMETTE HARBOR IL TO MICHIGAN CITY IN 5 NM
OFFSHORE TO MID LAKE-
LAKE MICHIGAN FROM PENTWATER TO MANISTEE MI 5 NM OFFSHORE TO MID
LAKE-
LAKE MICHIGAN FROM WHITEHALL TO PENTWATER MI 5 NM OFFSHORE TO MID
LAKE-
LAKE MICHIGAN FROM GRAND HAVEN TO WHITEHALL MI 5 NM OFFSHORE TO
MID LAKE-
LAKE MICHIGAN FROM HOLLAND TO GRAND HAVEN MI 5 NM OFFSHORE TO MID
LAKE-
LAKE MICHIGAN FROM SOUTH HAVEN TO HOLLAND MI 5 NM OFFSHORE TO MID
LAKE-
LAKE MICHIGAN FROM ST. JOSEPH TO SOUTH HAVEN MI 5 NM OFFSHORE TO
MID LAKE-
1142 AM CDT WED JUN 12 2013

THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE OPEN WATERS OF LAKE
MICHIGAN.

.DAY ONE...THIS AFTERNOON AND TONIGHT.

THUNDERSTORMS ARE LIKELY OVER THE SOUTH HALF OF LAKE MICHIGAN.
SOME STORMS MAY PRODUCE WIND GUSTS IN EXCESS OF 50 KTS AND LARGE
HAIL...MAINLY OVER FAR SOUTHERN LAKE MICHIGAN LATE THIS AFTERNOON
AND THIS EVENING.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY.

THERE IS A CHANCE OF THUNDERSTORMS SATURDAY THROUGH MONDAY.

&&

$$

MTF

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