WWUS73 KLOT 272107
NPWLOT

URGENT - WEATHER MESSAGE
National Weather Service Chicago IL
407 PM CDT Mon Jul 27 2026

ILZ005-012-020-021-023-033-039-106>108-272215-
/O.CAN.KLOT.XH.W.0002.000000T0000Z-260728T0200Z/
McHenry-Kane-Kendall-Grundy-Kankakee-Iroquois-Ford-Northern Will-
Southern Will-Eastern Will-
Including the cities of Plano, Plainfield, Yorkville, Bradley,
Coal City, Beecher, Channahon, Aurora, Woodstock, Oswego,
Manhattan, Joliet, Watseka, Bourbonnais, Kankakee, Crete, Gibson
City, Minooka, Crystal Lake, Morris, Wilmington, Bolingbrook,
McHenry, Gilman, Mokena, Peotone, Elgin, Paxton, and Algonquin
407 PM CDT Mon Jul 27 2026

...EXTREME HEAT WARNING IS CANCELLED...

The Extreme Heat Warning has been cancelled. Temperatures and heat
index values will remain below warning criteria.

$$

ILZ006-013-103>105-INZ001-002-010-011-019-272215-
/O.CAN.KLOT.HT.Y.0004.000000T0000Z-260728T0200Z/
Lake IL-DuPage-Northern Cook-Central Cook-Southern Cook-Lake IN-
Porter-Newton-Jasper-Benton-
Including the cities of Morocco, Northbrook, Lombard, Oak Forest,
Wheaton, Downers Grove, Orland Park, Gary, DeMotte, Calumet City,
Des Plaines, Valparaiso, Lemont, Oak Park, Kentland, Palatine,
Portage, Evanston, La Grange, Merrillville, Fowler, Gurnee,
Chicago, Oxford, Chesterton, Naperville, Rensselaer, Park Forest,
Schaumburg, Carol Stream, Mundelein, Roselawn, Cicero, Buffalo
Grove, Waukegan, Oak Lawn, and Hammond
407 PM CDT Mon Jul 27 2026 /507 PM EDT Mon Jul 27 2026/

...HEAT ADVISORY IS CANCELLED...

The Heat Advisory has been cancelled. Temperatures and heat index
values will remain below advisory criteria.

$$

ILZ003-004-008-010-011-019-032-280200-
/O.CON.KLOT.XH.W.0002.000000T0000Z-260728T0200Z/
Winnebago-Boone-Ogle-Lee-De Kalb-La Salle-Livingston-
Including the cities of Dixon, Streator, Oregon, Mendota, La
Salle, Rockford, Rochelle, Marseilles, Dwight, DeKalb, Ottawa,
Sycamore, Pontiac, Fairbury, Byron, and Belvidere
407 PM CDT Mon Jul 27 2026

...EXTREME HEAT WARNING REMAINS IN EFFECT UNTIL 9 PM CDT THIS
EVENING...

* WHAT...Dangerously hot conditions with heat index values up to 113.

* WHERE...Livingston, Boone, De Kalb, La Salle, Lee, Ogle, and
  Winnebago Counties.

* WHEN...Until 9 PM CDT this evening.

* IMPACTS...Heat related illnesses increase significantly during
  extreme heat and high humidity events.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

&&

$$