Hazard Report Provided By forecast.weather.gov

Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
1030 AM CDT Mon May 18 2026

ILZ003>006-008-010>013-019>021-023-032-033-039-103>108-INZ001-002-
010-011-019-191530-
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-
1030 AM CDT Mon May 18 2026 /1130 AM EDT Mon May 18 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...

  Limited Thunderstorm Risk...with an associated:
     Level 2 of 5 Damaging Wind Risk...up to 60 mph.
     Level 1 of 5 Large Hail Risk...up to quarter size.

DISCUSSION...

Thunderstorms are likely near and east of I-55 through early
afternoon. A few of the storms could become severe, capable of
producing locally damaging winds over 60 mph.

Another line of thunderstorms is expected to approach the area
from Iowa again toward daybreak Tuesday.

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

Tuesday...
   Limited Thunderstorm Risk...with an associated:
      Level 2 of 5 Severe Thunderstorm Risk.

.SPOTTER INFORMATION STATEMENT...

  Spotters may be needed through early this afternoon.

GENERAL STORM MOTION OF THE DAY:

  Moving toward the northeast at 45 to 55 mph.

$$

WATCH COUNTY NOTIFICATION FOR WATCH 220
NATIONAL WEATHER SERVICE CHICAGO IL
1053 AM CDT MON MAY 18 2026

ILC031-043-053-075-091-197-INC007-073-089-111-127-182200-
/O.CON.KLOT.SV.A.0220.000000T0000Z-260518T2200Z/

SEVERE THUNDERSTORM WATCH 220 REMAINS VALID UNTIL 5 PM CDT /6 PM
EDT/ THIS AFTERNOON FOR THE FOLLOWING AREAS

IN ILLINOIS THIS WATCH INCLUDES 6 COUNTIES

IN EAST CENTRAL ILLINOIS

FORD                  IROQUOIS

IN NORTHEAST ILLINOIS

COOK                  DUPAGE                KANKAKEE
WILL

IN INDIANA THIS WATCH INCLUDES 5 COUNTIES

IN NORTHWEST INDIANA

BENTON                JASPER                LAKE IN
NEWTON                PORTER

THIS INCLUDES THE CITIES OF BOLINGBROOK, BOURBONNAIS,
CAROL STREAM, CHESTERTON, CHICAGO, DEMOTTE, DOWNERS GROVE,
EVANSTON, FOWLER, GARY, GIBSON CITY, GILMAN, HAMMOND, JOLIET,
KANKAKEE, KENTLAND, LEMONT, LOMBARD, MERRILLVILLE, MOROCCO,
NAPERVILLE, OAK LAWN, ORLAND PARK, OXFORD, PARK FOREST, PAXTON,
PORTAGE, RENSSELAER, ROSELAWN, SCHAUMBURG, VALPARAISO, WATSEKA,
WHEATON, AND WILMINGTON.

$$

Hazard Report Provided By forecast.weather.gov