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This extreme heat warning is no longer in effect.
It was cancelled
.
It is kept here for reference only — do not rely on it for current conditions.
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Extreme Heat Warning
CancelledSouthern Cook
Status
Cancelled
Started 1 day ago
Ends
expired
Issued
Severity
Severe
Urgency
Expected
Certainty
Likely
Details
* WHAT...Dangerously hot conditions with heat index values of 100 to 105 expected. This is the third day in a row with a forecast or observed maximum heat index over 100 degrees.
* WHERE...Southern Cook County.
* WHEN...Until 7 PM CDT this evening.
* IMPACTS...The threat for heat related illnesses increases significantly during prolonged periods of hot temperatures and high humidity levels.
* ADDITIONAL DETAILS...A cold front possibly accompanied by thunderstorms will move inland from Lake Michigan this afternoon and evening leading to rapidly improving conditions.
Data from the National Weather Service
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