473
WHUS53 KLOT 180106
SMWLOT
LMZ740-741-777-779-180300-
/O.NEW.KLOT.MA.W.0027.260418T0106Z-260418T0300Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SPECIAL MARINE WARNING
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE
806 PM CDT FRI APR 17 2026
THE NATIONAL WEATHER SERVICE IN CHICAGO HAS ISSUED A
* SPECIAL MARINE WARNING FOR...
NEARSHORE WATERS FROM WINTHROP HARBOR TO NORTHERLY ISLAND...
OPEN WATERS FROM WINTHROP HARBOR TO MICHIGAN CITY OUT TO MID
LAKE...
* UNTIL 1000 PM CDT.
* AT 806 PM CDT, SEVERE THUNDERSTORMS CAPABLE OF PRODUCING
WATERSPOUTS WERE LOCATED ALONG A LINE EXTENDING FROM 7 NM NORTHWEST
OF KENOSHA TO NEAR MCHENRY TO 16 NM WEST OF ELGIN, MOVING EAST AT
30 KNOTS.
HAZARD...WATERSPOUTS AND WIND GUSTS IN EXCESS OF 65 KNOTS.
SOURCE...RADAR.
IMPACT...WATERSPOUTS CAN EASILY OVERTURN BOATS AND CREATE LOCALLY
HAZARDOUS SEAS. BOATS COULD SUFFER SIGNIFICANT STRUCTURAL
DAMAGE IN HIGH WINDS. SMALL CRAFT COULD CAPSIZE IN
SUDDENLY HIGHER WAVES.
* LOCATIONS IMPACTED INCLUDE...
HARRISON-DEVER CRIB, WILMETTE HARBOR, WINTHROP HARBOR, MONTROSE
HARBOR, MONROE HARBOR, WAUKEGAN HARBOR, BELMONT HARBOR, DIVERSY
HARBOR, AND DUSABLE HARBOR.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A TORNADO WATCH REMAINS IN EFFECT UNTIL 1100 PM CDT FOR NORTHEASTERN
ILLINOIS...AND THE ADJACENT WATERS OF LAKE MICHIGAN.
MOVE TO SAFE HARBOR IMMEDIATELY AS GUSTY WINDS AND HIGH WAVES ARE
EXPECTED.
THUNDERSTORMS CAN PRODUCE SUDDEN WATERSPOUTS. WATERSPOUTS CAN EASILY
OVERTURN BOATS AND CREATE LOCALLY HAZARDOUS SEAS. SEEK SAFE HARBOR
IMMEDIATELY.
LAT...LON 4246 8702 4209 8696 4209 8697 4186 8738
4188 8762 4189 8762 4189 8760 4190 8762
4206 8767 4214 8775 4227 8783 4233 8783
4239 8780 4248 8780
TIME...MOT...LOC 0106Z 279DEG 28KT 4266 8800 4238 8825 4202 8865
WATERSPOUT...POSSIBLE
HAIL...0.00IN
WIND...65KTS
YACK
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