262
FLUS43 KLOT 191636
HWOLOT
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
ISSUED BY NATIONAL WEATHER SERVICE LINCOLN IL
1136 AM CDT SAT JUL 19 2025
ILZ003>006-008-010>013-019>021-023-032-033-039-103>108-INZ001-002-
010-011-019-201645-
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-
1136 AM CDT SAT JUL 19 2025 /1236 PM EDT SAT JUL 19 2025/
THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTH CENTRAL
ILLINOIS...NORTHEAST ILLINOIS AND NORTHWEST INDIANA.
DAY ONE
THIS AFTERNOON AND TONIGHT.
WEATHER HAZARDS EXPECTED...
ELEVATED THUNDERSTORM RISK...WITH AN ASSOCIATED:
LEVEL 1 OF 5 TORNADO RISK.
LEVEL 2 OF 5 DAMAGING WIND RISK...UP TO 60 MPH.
LEVEL 1 OF 5 LARGE HAIL RISK...UP TO QUARTER SIZE.
ELEVATED FLOODING RISK.
DISCUSSION...
THUNDERSTORMS WITH THE POTENTIAL TO PRODUCE DAMAGING WINDS AND
TORRENTIAL RAINFALL ARE EXPECTED ACROSS THE AREA THROUGH
EARLY-AFTERNOON. ADDITIONAL SCATTERED THUNDERSTORMS AND
LOCALLY HEAVY RAIN ARE POSSIBLE LATE TONIGHT, MAINLY SOUTH OF
I-80.
DAYS TWO THROUGH SEVEN
SUNDAY THROUGH FRIDAY.
SUNDAY...
ELEVATED FLOODING RISK.
LIMITED THUNDERSTORM RISK...WITH AN ASSOCIATED:
LEVEL 1 OF 5 SEVERE THUNDERSTORM RISK.
HIGH SWIM RISK LAKE MICHIGAN BEACHES.
MONDAY...
LIMITED THUNDERSTORM RISK.
TUESDAY...
LIMITED EXCESSIVE HEAT RISK.
WEDNESDAY...
ELEVATED EXCESSIVE HEAT RISK.
THURSDAY...
LIMITED THUNDERSTORM RISK.
ELEVATED EXCESSIVE HEAT RISK.
FRIDAY...
LIMITED THUNDERSTORM RISK.
DISCUSSION...
THUNDERSTORMS WITH TORRENTIAL RAIN AND LOCALIZED FLASH FLOODING
MAY PERSIST SOUTH OF I-80 ON SUNDAY.
DANGEROUS HEAT AND HUMIDITY ARE POSSIBLE THE MIDDLE OF NEXT WEEK.
SPOTTER INFORMATION STATEMENT
SPOTTERS MAY BE NEEDED THROUGH MID-AFTERNOON.
GENERAL STORM MOTION OF THE DAY:
MOVING TOWARD THE EAST-SOUTHEAST AT 40 MPH.
LMZ740>745-201645-
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-
1136 AM CDT SAT JUL 19 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
THIS AFTERNOON AND TONIGHT.
WEATHER HAZARDS EXPECTED...
ELEVATED THUNDERSTORM RISK...WITH AN ASSOCIATED:
THUNDERSTORM WATERSPOUT RISK
LEVEL 2 OF 5 THUNDERSTORM WIND GUST RISK...UP TO 50 KNOTS.
DAYS TWO THROUGH SEVEN
SUNDAY THROUGH FRIDAY.
SUNDAY...
HAZARDOUS CONDITIONS FOR SMALL CRAFT ARE LIKELY.
LIMITED THUNDERSTORM RISK.
THURSDAY AND FRIDAY...
LIMITED THUNDERSTORM RISK.
SHIMON
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