Hazardous Weather Outlook
Issued by NWS Chicago, IL

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600
FLUS43 KLOT 242122
HWOLOT

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
422 PM CDT WED AUG 24 2016

ILZ003>006-008-010>014-019>023-032-033-039-INZ001-002-010-011-019-
252130-
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-
422 PM CDT WED AUG 24 2016 /522 PM EDT WED AUG 24 2016/

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

.DAY ONE...TONIGHT.

WEATHER HAZARDS EXPECTED:
 SIGNIFICANT THUNDERSTORM RISK...MAINLY LATE TONIGHT.
 WITH AN ASSOCIATED:
 LIMITED THUNDERSTORM WIND DAMAGE RISK SOUTH OF INTERSTATE 80.
 LIMITED HAIL RISK SOUTH OF INTERSTATE 80.
 ELEVATED FLOODING RISK...MAINLY SOUTH OF INTERSTATE 88.

DISCUSSION:

A LULL IN WIDESPREAD THUNDERSTORM ACTIVITY IS EXPECTED THROUGH
MUCH OF THE EVENING....WITH MORE WIDESPREAD ACTIVITY EXPECTED TO
MOVE ACROSS THE AREA OVERNIGHT INTO EARLY THURSDAY. THERE IS A LOW
RISK FOR STRONG TO SEVERE THUNDERSTORMS MAINLY SOUTH OF INTERSTATE
80. THE MAIN THREAT WILL BE HEAVY RAINFALL AND FLASH
FLOODING...ESPECIALLY ALONG AND SOUTH OF INTERSTATE 88 IN
ILLINOIS.

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

THURSDAY...
 SIGNIFICANT THUNDERSTORM RISK IN THE EARLY MORNING DIMINISHING
TO A LIMITED RISK IN THE AFTERNOON WITH AN ASSOCIATED:
LIMITED SEVERE THUNDERSTORM RISK EAST OF INTERSTATE 57.
LIMITED FLOODING RISK.

FRIDAY NIGHT... LIMITED THUNDERSTORM RISK.
SATURDAY...LIMITED TO ELEVATED THUNDERSTORM RISK...HIGHEST NORTH
OF INTERSTATE 88.
SUNDAY THROUGH TUESDAY...LIMITED THUNDERSTORM RISK.

DISCUSSION:

AFTER MORNING ACTIVITY DIMINISHES ON THURSDAY...THERE IS A CHANCE
FOR SCATTERED THUNDERSTORMS THURSDAY AFTERNOON...ESPECIALLY EAST
OF INTERSTATE 55...WITH A LIMITED SEVERE RISK EAST OF INTERSTATE
57. HEAVY RAINFALL AND LOCALIZED FLOODING ARE A CONCERN AS
WELL...ESPECIALLY EARLY.

FLOODING IS EXPECTED TO CONTINUE ALONG PORTIONS
OF THE IROQUOIS AND KANKAKEE RIVERS.

.SPOTTER INFORMATION STATEMENT...

SPOTTERS MAY BE NEEDED LATE TONIGHT...MAINLY FOR FLOODING REPORTS.

GENERAL STORM MOTION OF THE DAY:

TO THE EAST AROUND NORTHEAST AROUND 20 TO 30 MPH.

&&

$$

LMZ740>745-252130-
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-
422 PM CDT WED AUG 24 2016

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

.DAY ONE...TONIGHT.

NUMEROUS TO WIDESPREAD THUNDERSTORMS ARE POSSIBLE OVERNIGHT.

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

NUMEROUS TO WIDESPREAD THUNDERSTORMS ARE POSSIBLE EARLY
THURSDAY...WITH A CHANCE OF THUNDERSTORMS THURSDAY AFTERNOON. A
PERIODIC CHANCE OF THUNDERSTORMS WILL RETURN SATURDAY AND CONTINUE
THROUGH TUESDAY.

&&

$$

LMZ080-261-362-364-366-563-565-567-669-671-673-675-777-779-868-
870-872-874-876-878-252130-
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-
422 PM CDT WED AUG 24 2016

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

.DAY ONE...TONIGHT.

NUMEROUS TO WIDESPREAD THUNDERSTORMS ARE POSSIBLE OVER THE FAR
SOUTHERN PORTION OF THE LAKE LATE TONIGHT.

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

NUMEROUS TO WIDESPREAD THUNDERSTORMS ARE POSSIBLE EARLY
THURSDAY OVER THE FAR SOUTHERN PORTION OF THE LAKE...WITH A
CHANCE OF THUNDERSTORMS THURSDAY AFTERNOON OVER THE SOUTH HALF. A
PERIODIC CHANCE OF THUNDERSTORMS WILL RETURN SATURDAY AND CONTINUE
THROUGH TUESDAY.

&&

$$

RC

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