609
FLUS43 KLOT 130905
HWOLOT
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
405 AM CDT TUE MAY 13 2025
ILZ003>006-008-010>013-019>021-023-032-033-039-103>108-INZ001-002-
010-011-019-140915-
WINNEBAGO-BOONE-MCHENRY-LAKE IL-OGLE-LEE-DE KALB-KANE-DUPAGE-
LA SALLE-KENDALL-GRUNDY-KANKAKEE-LIVINGSTON-IROQUOIS-FORD-
NORTHERN COOK-CENTRAL COOK-SOUTHERN COOK-NORTHERN WILL-
SOUTHERN WILL-EASTERN WILL-LAKE IN-PORTER-NEWTON-JASPER-BENTON-
405 AM CDT TUE MAY 13 2025 /505 AM EDT TUE MAY 13 2025/
THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTH CENTRAL
ILLINOIS...NORTHEAST ILLINOIS AND NORTHWEST INDIANA.
DAY ONE
TODAY AND TONIGHT.
WEATHER HAZARDS EXPECTED...
LIMITED THUNDERSTORM RISK.
LIMITED FOG RISK NEAR LAKE MICHIGAN TONIGHT.
DISCUSSION...
ISOLATED TO WIDELY SCATTERED THUNDERSTORMS ARE POSSIBLE THIS
AFTERNOON AND EVENING WITH THE GREATEST COVERAGE EXPECTED IN
NORTHWEST INDIANA. POSSIBLE HAZARDS INCLUDE LIGHTNING, LOCALIZED
DOWNPOURS, AND GUSTY WINDS WITH ANY STORMS THAT DEVELOP.
FOG, LOCALLY DENSE, IS EXPECTED TO DEVELOP OVER SOUTHERN LAKE
MICHIGAN TODAY AND MAY MOVE INLAND NEAR THE LAKE THIS EVENING
AND OVERNIGHT. THE HIGHEST CHANCE FOR PATCHY DENSE FOG WILL BE
ALONG THE ILLINOIS SHORE.
DAYS TWO THROUGH SEVEN
WEDNESDAY THROUGH MONDAY.
WEDNESDAY...
LIMITED THUNDERSTORM RISK.
LIMITED FOG RISK NEAR LAKE MICHIGAN.
THURSDAY...
LIMITED THUNDERSTORM RISK...WITH AN ASSOCIATED:
LEVEL 2 OF 5 SEVERE THUNDERSTORM RISK.
FRIDAY...
ELEVATED FIRE WEATHER RISK.
LIMITED NON-THUNDERSTORM WIND RISK
DISCUSSION...
ISOLATED TO SCATTERED THUNDERSTORMS MAY DEVELOP AHEAD OF A COLD
FRONT LATE THURSDAY AFTERNOON. IF THUNDERSTORMS DEVELOP, SOME WILL
LIKELY BECOME SEVERE WITH DAMAGING HAIL BEING THE GREATEST THREAT.
ON FRIDAY, STRONG WEST-SOUTHWEST WINDS AND VERY WARM AND DRY
CONDITIONS WILL RESULT IN AN ELEVATED TO POTENTIALLY SIGNIFICANT
FIRE DANGER.
SPOTTER INFORMATION STATEMENT
SPOTTER ACTIVATION WILL NOT BE NECESSARY THROUGH TONIGHT.
GENERAL STORM MOTION OF THE DAY:
MOVING TOWARD THE NORTHWEST AT 10 TO 20 MPH.
LMZ740>745-140915-
WINTHROP HARBOR TO WILMETTE HARBOR IL-
WILMETTE HARBOR TO NORTHERLY ISLAND IL-
NORTHERLY ISLAND TO CALUMET HARBOR IL-
CALUMET HARBOR IL TO GARY IN-GARY TO BURNS HARBOR IN-
BURNS HARBOR TO MICHIGAN CITY IN-
405 AM CDT TUE MAY 13 2025
THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF THE ILLINOIS
NEARSHORE WATERS OF LAKE MICHIGAN AND THE INDIANA NEARSHORE
WATERS OF LAKE MICHIGAN.
DAY ONE
TODAY AND TONIGHT.
WEATHER HAZARDS EXPECTED...
LIMITED THUNDERSTORM RISK.
LIMITED FOG RISK.
DAYS TWO THROUGH SEVEN
WEDNESDAY THROUGH MONDAY.
WEDNESDAY...
LIMITED THUNDERSTORM RISK.
LIMITED FOG RISK.
THURSDAY...
HAZARDOUS CONDITIONS FOR SMALL CRAFT ARE LIKELY.
LIMITED THUNDERSTORM RISK...WITH AN ASSOCIATED:
LEVEL 2 OF 5 SEVERE THUNDERSTORM RISK.
FRIDAY...
GALE FORCE WINDS POSSIBLE.
SATURDAY...
HAZARDOUS CONDITIONS FOR SMALL CRAFT ARE LIKELY.
PETR/CASTRO
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