Wind Advisory 7, NWS Chicago, IL

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Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
316 AM CDT Mon Apr 27 2026

ILZ003>006-008-010>013-019>021-023-032-033-039-103>108-INZ001-002-
010-011-019-280830-
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-
316 AM CDT Mon Apr 27 2026 /416 AM EDT Mon Apr 27 2026/

This Hazardous Weather Outlook is for portions of north central
Illinois...northeast Illinois and northwest Indiana.

.DAY ONE...Today and Tonight.

Weather hazards expected...

  Elevated Thunderstorm Risk...with an associated:
     Level 3 of 5 Damaging Wind Risk...up to 70 mph.
     Level 2 of 5 Tornado Risk mainly south of Interstate 80.
     Level 1 of 5 Large Hail Risk...up to quarter size.

  Elevated Flooding Risk.

DISCUSSION...

Severe thunderstorms are possible this morning through this
evening. The greatest risk for severe thunderstorms is mainly
south of Interstate 80. The highest tornado risk is mainly
south of the Kankakee and Illinois River Valleys.

Heavy rainfall may lead to localized flooding and possible
renewed rises on area rivers.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

Friday Night into Saturday morning...
  Limited Frost Risk.

.SPOTTER INFORMATION STATEMENT...

Spotters will likely be needed today and this evening.

GENERAL STORM MOTION OF THE DAY:

Moving toward the east at 40 to 50 mph.

LMZ740>745-280830-
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-
316 AM CDT Mon Apr 27 2026

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...

  Hazardous conditions for small craft.
  Limited Thunderstorm Risk...with an associated:
     Level 2 of 5 Thunderstorm Wind Gust Risk...up to 50 knots.
     Level 1 of 5 Hail Risk...up to quarter size.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

No hazardous weather is expected at this time.

Visit us at www.weather.gov/chicago