2 products issued by NWS for: Arlington Heights IL
Hazardous Weather Outlook
Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
333 PM CDT Mon Jun 23 2025
ILZ003>006-008-010>013-019>021-023-032-033-039-103>108-INZ001-002-
010-011-019-242045-
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-
333 PM CDT Mon Jun 23 2025 /433 PM EDT Mon Jun 23 2025/
This Hazardous Weather Outlook is for portions of north central
Illinois...northeast Illinois and northwest Indiana.
.DAY ONE...Tonight.
Weather hazards expected...
Limited Thunderstorm Risk...with an associated:
Level 1 of 5 Damaging Wind Risk...up to 60 mph.
Limited Flooding Risk, mainly in northwest Illinois.
Elevated Excessive Heat Risk.
DISCUSSION...
Oppressive heat and humidity will persist into this evening, with
heat indices gradually falling through the 90s early.
A few thunderstorms may move into portions of northern Illinois
late this evening and overnight, along an outflow boundary that is
expected to push into the area from Wisconsin. The strongest
storms will be capable of frequent lightning, gusty outflow winds,
and heavy rainfall.
.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.
Tuesday and Wednesday...
Limited Thunderstorm Risk...with an associated:
Level 1 of 5 Severe Thunderstorm Risk.
Limited Flooding Risk.
Limited Excessive Heat Risk.
Thursday through Sunday...
Limited Thunderstorm Risk.
Limited Excessive Heat Risk.
DISCUSSION...
Periodic thunderstorm chances will exist into the weekend, as
a nearly stationary frontal boundary lingers in the vicinity.
The strongest storms may be capable of producing damaging
wind gusts and localized flooding.
While lower than the past few days, afternoon peak heat indices
near 100 are expected, especially south of I-80.
.SPOTTER INFORMATION STATEMENT...
Spotter activation will likely not be necessary through tonight.
GENERAL STORM MOTION OF THE DAY:
Moving toward the east-northeast at 20-25 mph.
$$
Extreme Heat Warning
URGENT - WEATHER MESSAGE National Weather Service Chicago IL 228 PM CDT Mon Jun 23 2025 ILZ103>105-240500- /O.CON.KLOT.XH.W.0001.000000T0000Z-250624T0500Z/ Northern Cook-Central Cook-Southern Cook- Including the cities of Park Forest, Oak Forest, Des Plaines, Schaumburg, Calumet City, Orland Park, Chicago, La Grange, Northbrook, Evanston, Oak Park, Lemont, Cicero, Oak Lawn, and Palatine 228 PM CDT Mon Jun 23 2025 ...EXTREME HEAT WARNING REMAINS IN EFFECT UNTIL MIDNIGHT CDT TONIGHT... * WHAT...Dangerously hot and humid conditions with high temperatures well into the 90s and afternoon heat index values between 100 and 105 degrees expected. * WHERE...Central Cook, Northern Cook, and Southern Cook Counties. * WHEN...Until midnight CDT tonight. * IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events. The magnitude of anticipated heat, combined with oppressive warmth at night will lead to hazardous conditions, particularly for the elderly and those with pre-existing health conditions. Residents of the city of Chicago can call 3 1 1 to request well being checks for elderly friends or family members, or for information on finding the nearest cooling center. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke. && $$