Severe weather, dangerous heat expected in Chicago area, NW IN, National Weather Service predicts

Severe storms also possible Monday, including strong winds
CHICAGO (WLS) -- Summer is in the air and with that comes the heat.

Chicago is expected to experience a dangerous heat wave this week as temperatures and humidity rise.

A Heat Advisory has been issued beginning Tuesday at noon until 8 p.m. Wednesday, according to the Office of Emergency Management and Communications. The advisory includes North Central and Northeastern Illinois, as well as portions of Northwest Indiana.

The National Weather Service predicts peak afternoon heat index values could reach between 105 and 109 degrees those days.

Officials warn that the hot temperatures and high humidity may cause heat illnesses, which could develop in less than 30 minutes after strenuous outdoor activity.

Residents are advised to take extra precautions, including drinking plenty of fluids, staying in air-conditioned areas and staying out of the sun. If possible, reschedule strenuous activities to early morning or in the evenings if you work or will be spending time outside. Wear lightweight and loose-fitting clothing when possible as well.


Know the signs and symptoms of heat exhaustion and heat stroke.

Heat Stroke:
  • Confusion, altered mental status, slurred speech

  • Loss of consciousness (coma)

  • Hot, dry skin or profuse sweating

  • Seizures

  • Very high body temperature

  • Fatal if treatment delayed

  • Heat Exhaustion:
  • Headache

  • Nausea

  • Dizziness

  • Weakness

  • Irritability

  • Thirst

  • Heavy sweating

  • Elevated body temperature

  • Decreased urine output

  • Anyone overcome by heat should be moved to a cool or shaded location, officials said. A heat stroke is an emergency and 911 should be called.

    They also recommend checking up on relatives and neighbors.

    Last month during a spring heat wave, three women were found dead in a Rodger Park senior apartment building where other residents said they had started complaining to management of oppressively hot conditions days earlier.

    RELATED: Calls for cooling ordinance grow after 3 women found dead in Rogers Park senior apartment building

    Officials also remind people to never leave young children or pets unattended in vehicles under any circumstance.

    Severe storms are also possible Monday before the heat kicks in, ABC7 Meteorologist Phil Schwarz said.

    The NWS says the heat should break toward the end of the week.

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