Extreme Heat Warning for Northern Cook; Central Cook; Southern Cook
Official alert fields
What you need to know
- Applies to
- Central Cook, Northern Cook, Southern Cook
- Effective
- Ends or expires
- Official severity
- Severe
- Official urgency
- Expected
- Official certainty
- Likely
What is happening
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. Impacts: The threat for heat related illnesses increases significantly during prolonged periods of hot temperatures and high humidity...
What the bulletin says to do
The prolonged magnitude of observed and anticipated heat 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. Consider altering outdoor plans. If you must spend an extended time outdoors, wear lightweight and loose fitting clothing. Take action when you see symptoms of heat exhaustion and heat stroke.
Full official description
Bulletin 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...Central Cook, Northern Cook, and Southern Cook Counties. * 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.
Official geometry where available
Alert boundary
Lifecycle record
Official revisions
- Alert
Extreme Heat Warning issued September 3 at 1:08AM CDT until September 3 at 7:00PM CDT by NWS Chicago IL
Official revision
Source and limitations
Publisher: Weather Alert Watch. Primary source: NWS Chicago IL. This page reorganizes official fields and does not add a forecast or expand the affected area.
- CAP status
- Actual
- Message type
- Alert
- Last collected