Special Marine Warning just issued for all Chicago-area nearshore Lake Michigan waters; valid until 7:00 pm

Weather
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SPECIAL MARINE WARNING
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE
528 PM CDT TUE AUG 24 2021

THE NATIONAL WEATHER SERVICE IN CHICAGO HAS ISSUED A

* SPECIAL MARINE WARNING FOR...

  NEARSHORE WATERS FROM WINTHROP HARBOR TO CALUMET HARBOR...
  NEARSHORE WATERS FROM CALUMET HARBOR TO MICHIGAN CITY...
  OPEN WATERS FROM WINTHROP HARBOR TO MICHIGAN CITY OUT TO MID
LAKE...

* UNTIL 700 PM CDT.

* AT 525 PM CDT, AN AREA OF STRONG THUNDERSTORMS WITH FREQUENT 
  LIGHTNING WAS LOCATED OVER THE OPEN WATERS NORTH OF EVANSTON, IN 
  ADDITION, A FRONT NORTH OF MONTROSE HARBOR, WAS MOVING SOUTH AT 20 
  KNOTS. THE BUOY NEAR WILMETTE REPORTED A WIND GUST TO 33 KT WITH 
  THIS FRONT. 

  HAZARD...WIND GUSTS 34 KNOTS OR GREATER AND SMALL HAIL.

  SOURCE...BUOY REPORTED AND RADAR ESTIMATED.

  IMPACT...SMALL CRAFT COULD BE DAMAGED IN BRIEFLY HIGHER WINDS AND 
           SUDDENLY HIGHER WAVES.

* LOCATIONS IMPACTED INCLUDE...
  HARRISON-DEVER CRIB, WILMETTE HARBOR, 31ST STREET HARBOR, MONROE
  HARBOR, BURNS HARBOR, CALUMET HARBOR, WINTHROP HARBOR, INDIANA
  HARBOR, MONTROSE HARBOR, BURNHAM HARBOR, HAMMOND MARINA AND JACKSON
  PARK HARBOR.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

MOVE TO SAFE HARBOR IMMEDIATELY AS GUSTY WINDS AND HIGH WAVES ARE
EXPECTED.

FREQUENT LIGHTNING IS OCCURRING WITH THESE STORMS AND WITH THE 
FRONT. IF CAUGHT ON THE OPEN WATER STAY BELOW DECK IF POSSIBLE, KEEP 
AWAY FROM UNGROUNDED METAL OBJECTS.
HAIL...<.75IN
WIND...>34KTS

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