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000
FLUS43 KLOT 210931
HWOLOT

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
431 AM CDT TUE MAY 21 2013

ILZ003>006-008-010>014-019>023-032-033-039-INZ001-002-010-011-019-
220945-
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-
431 AM CDT TUE MAY 21 2013 /531 AM EDT TUE MAY 21 2013/

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

.DAY ONE...TODAY AND TONIGHT.

 WEATHER HAZARDS EXPECTED:

  THUNDERSTORMS...THE STRONGEST COULD PRODUCE:
    HAIL TO THE SIZE OF HALF DOLLARS.
    WIND GUSTS OVER 60 MPH.
    FREQUENT CLOUD TO GROUND LIGHTNING.
    AND HEAVY RAIN.

  AREAS AFFECTED AND TIMING:

  THUNDERSTORMS WILL BEGIN TO DEVELOP EARLY IN THE AFTERNOON
  ACROSS ALL OF NORTHERN ILLINOIS AND NORTHWEST INDIANA...WITH
  STRONGER STORMS POSSIBLY BECOMING SEVERE IN THE LATE AFTERNOON
  AND CONTINUING THROUGH THE EVENING PERIODS ALONG AND EAST OF A
  PONTIAC TO GARY LINE.

  DISCUSSION:

  A LULL IN THE THUNDERSTORMS WILL HOLD THROUGH THE MORNING HOURS
  WITH THE DEVELOPMENT OF A CAPPED ENVIRONMENT. AS THE DAY
  PROGRESSES AND THE SURFACE WARMS...THE CAPPED ENVIRONMENT WILL
  BEGIN TO DISSIPATE AND ALLOW THUNDERSTORMS TO DEVELOP.
  THUNDERSTORMS WILL GROW IN COVERAGE AND INTENSITY IN THE LATE
  AFTERNOON THROUGH EVENING HOURS...POSSIBLY DEVELOPING INTO A
  A LINE SEGMENT. THE MOST FAVORED AREAS FOR THIS TO OCCUR WILL BE
  ALONG AND EAST OF A PONTIAC TO GARY LINE.

  THE MAIN THREAT WILL BE DAMAGING WIND GUSTS BUT SOME HAIL IS ALSO
  POSSIBLE. THE COMBINATION OF A MOISTURE RICH ENVIRONMENT AND
  ADDITIONAL THUNDERSTORMS EXPECTED TO STRETCH SOUTHWEST INTO
  SOUTHWEST ILLINOIS...MAY LEAD TO HEAVY RAINFALL AND LOCALIZED
  FLOODING.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY.

SCATTERED SHOWERS AND THUNDERSTORMS ARE POSSIBLE WEDNESDAY AND AGAIN
SATURDAY THROUGH MONDAY.

.SPOTTER INFORMATION STATEMENT...

SPOTTERS MAY BE NEEDED THIS AFTERNOON THROUGH TONIGHT.

&&

$$

LMZ740>745-220945-
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-
431 AM CDT TUE MAY 21 2013

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

.DAY ONE...TODAY AND TONIGHT.

SCATTERED THUNDERSTORMS

THUNDERSTORMS ARE LIKELY WITH THE POTENTIAL FOR A FEW OF THESE
BECOMING SEVERE IN THE AFTERNOON AND EVENING HOURS. THE MAIN
SEVERE WEATHER THREATS WILL BE WIND GUSTS GREATER THAN 35 KNOTS
AND LARGE HAIL.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY.

SCATTERED THUNDERSTORMS WILL BE POSSIBLE THROUGH WEDNESDAY.

STRONG WINDS AND HIGH WAVES MAY CREATE HAZARDOUS CONDITIONS FOR
SMALL CRAFT THURSDAY THROUGH FRIDAY. OCCASIONAL GALE FORCE
GUSTS ARE POSSIBLE THURSDAY.

&&

$$

LMZ080-261-362-364-366-563-565-567-669-671-673-675-777-779-868-
870-872-874-876-878-220945-
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-
431 AM CDT TUE MAY 21 2013

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

.DAY ONE...TODAY AND TONIGHT.

THUNDERSTORMS ARE LIKELY WITH THE POTENTIAL FOR A FEW OF THESE
BECOMING SEVERE IN THE AFTERNOON AND EVENING HOURS. THE MAIN
SEVERE WEATHER THREATS WILL BE WIND GUSTS GREATER THAN 35 KNOTS
AND LARGE HAIL.

PATCHY DENSE FOG WILL BE POSSIBLE ACROSS THE ENTIRE LAKE.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY.

SCATTERED THUNDERSTORMS WILL BE POSSIBLE WEDNESDAY. ADDITIONAL
THUNDERSTORMS ARE POSSIBLE SATURDAY THROUGH MONDAY.

AREAS OF DENSE FOG WILL BE POSSIBLE THROUGH WEDNESDAY ACROSS THE
ENTIRE LAKE.

GALE FORCE WINDS MAY BE POSSIBLE THURSDAY...MAINLY FOR THE CENTRAL
AND SOUTHERN PORTIONS OF THE LAKE.



&&

$$

BEACHLER

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