EXCESSIVE HEAT WARNING for Friday and Saturday for areas to our south and west. Counties shaded in pink on map below.
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EXCESSIVE HEAT WATCH for Friday and Saturday still in place for Cook County and areas north and east. Counties shaded in dark red.
The reason Cook County is not in the WARNING area is because it is possible an outflow boundary from dying storms Thursday night coming across Lake Michigan could briefly shift winds off the lake Friday morning and limit heating for a few hours. It will still be very hot even at the lake front, but the heat index values may not get up to 105+ for very long at the lakefront on Friday.
Here's a look at heat index values for Friday and Saturday.
Near Record Highs Friday and Saturday. We have decent chance of tying the record high of 99 for Chicago on Saturday.
CLICK HERE for an interactive map to find a Cooling Center near you in Illinois.
CLICK HERE to see the cooling centers for Gary, Indiana
An Excessive Heat Watch means that a prolonged period of high temperatures is expected. The combination of high temperatures and high humidity will combine to create a dangerous situation in which heat illnesses are possible. 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...if you work or spend time outside. When possible...reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear light weight and loose fitting clothing when possible and drink plenty of water. To reduce risk during outdoor work...the occupational safety and health administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency...call 9 1 1.
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An Excessive Heat Warning means that a prolonged period of dangerously hot temperatures will occur. The combination of hot temperatures and high humidity will combine to create a dangerous situation in which heat illnesses are likely. Drink plenty of fluids...stay in an air-conditioned room...stay out of the sun... and check up on relatives and neighbors. Young children and pets should never be left unattended in vehicles under any circumstances. This is especially true during warm or hot weather when car interiors can reach lethal temperatures in a matter of minutes.