Hazard Report Provided By forecast.weather.gov

Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
230 PM CDT Thu Apr 16 2026

ILZ003>006-008-010>013-019>021-023-032-033-039-103>108-INZ001-002-
010-011-019-171930-
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-
230 PM CDT Thu Apr 16 2026 /330 PM EDT Thu Apr 16 2026/

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...

  Limited Thunderstorm Risk this afternoon in northwestern Indiana.
  Significant Fog Risk.

DISCUSSION...

A thunderstorm or two may move across northwestern Indiana through
this evening.

Dense fog is expected to move inland from Lake Michigan after
sunset.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.

Friday...
  Significant Fog Risk in the morning.
  Elevated Flooding Risk.
  Significant Thunderstorm Risk...with an associated:
     Level 3 of 5 Severe Thunderstorm Risk.
Saturday night into Sunday morning:
  Elevated  frost and freeze Risk.

DISCUSSION...

A line of thunderstorms is expected to move across the area late
Friday afternoon through Friday night. Pockets of damaging winds,
damaging hail, and even a tornado may occur especially along and
west of Interstate 39.

.SPOTTER INFORMATION STATEMENT...

  Spotter activation will not be necessary through tonight.

GENERAL STORM MOTION OF THE DAY:

  Moving toward the southeast at 25 mph.

$$

URGENT - WEATHER MESSAGE
National Weather Service Chicago IL
1152 PM CDT Thu Apr 16 2026

ILZ005-006-103-105-INZ001-002-171500-
/O.CON.KLOT.FG.Y.0010.000000T0000Z-260417T1500Z/
McHenry-Lake IL-Northern Cook-Southern Cook-Lake IN-Porter-
Including the cities of Des Plaines, Evanston, Algonquin,
Merrillville, Oak Forest, Woodstock, Lemont, Crystal Lake,
Calumet City, Buffalo Grove, Park Forest, Palatine, Gary, Gurnee,
Portage, Northbrook, Orland Park, Hammond, Schaumburg, McHenry,
Valparaiso, Waukegan, Mundelein, and Chesterton
1152 PM CDT Thu Apr 16 2026

...DENSE FOG ADVISORY REMAINS IN EFFECT UNTIL 10 AM CDT FRIDAY...

* WHAT...Visibility one quarter mile or less in dense fog.

* WHERE...In Illinois, Lake IL, McHenry, Northern Cook, and Southern
  Cook Counties. In Indiana, Lake IN and Porter Counties.

* WHEN...Until 10 AM CDT Friday.

* IMPACTS...Low visibility could make driving conditions hazardous.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If driving, slow down, use your headlights, and leave plenty of
distance ahead of you.

&&

$$

Doom

Hazard Report Provided By forecast.weather.gov