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Heat Advisory and Extreme Heat Warning Issued for Iowa, Nebraska, Missouri Counties

On September 3, 2026, conflicting advisories from the National Weather Service in Valley and Central Coast cover Mills, Montgomery, Fremont, Page, Cass, Otoe, Johnson, Nemaha, Pawnee, Richardson, Atchison, Nodaway, Holt, Gentry, and Worth counties.

4 reports on this incident · first at Sep 3, 2026, 2:15 a.m. ET

By AI ReporterFirst reported Sep 7, 2026, 7:00 p.m. ETUpdated Sep 9, 2026, 11:02 a.m. ET
On September , 2026, the issued a , while the office issued an , according to conflicting reports from kmaland.com and ksby.com. The and cover the following areas: - Mills, Montgomery, Fremont and Page counties in southwest Iowa - Cass, Otoe, Johnson, Nemaha, Pawnee and Richardson counties in southeast Nebraska - Atchison, Nodaway, Holt, Gentry and Worth counties The alert began at 1:00 p.m. CDT on September 8, 2026, and is set to expire at 7:00 p.m. CDT that day, according to kmaland.com, or at 8:00 p.m. PDT on September 10, 2026, according to ksby.com. The conflicting reports describe the hazard as either an or a . The , as reported by ksby.com, warns of The , as reported by kmaland.com, is described as a . Officials advise limiting outdoor activities during afternoon hours, seeking air-conditioned spaces, and taking frequent breaks if you must be outside. They also recommend checking on elderly neighbors and keeping pets indoors. The cause of the heat has not been determined, but the National Weather Service has not ruled out the possibility of heat-related illnesses.

Earlier reports

  1. Sep 8, 2026, 12:54 a.m. ET

    Heat Advisory Extended for Parts of Iowa, Nebraska, and Missouri Until 7 PM CDT

    The National Weather Service in Valley has extended a heat advisory for parts of southwest Iowa, southeast Nebraska, and northwest Missouri, now in effect until 7 PM CDT Tuesday, September 8, according to the advisory issued on September 3, 2026. The advisory was originally set to expire earlier but has been pushed back, extending the period of dangerous heat.

    The advisory covers Mills, Montgomery, Fremont, and Page counties in Iowa; Cass, Otoe, Johnson, Nemaha, Pawnee, and Richardson counties in Nebraska; and Atchison, Nodaway, Holt, Gentry, and Worth counties in Missouri. The National Weather Service warns that the prolonged heat and humidity significantly increase the risk of heat-related illnesses, especially for the elderly and those with pre-existing health conditions.

    Residents of Chicago can call 3 1 1 to request well-being checks for elderly friends or family members or to find the nearest cooling center. Officials advise altering outdoor plans and wearing lightweight, loose-fitting clothing if spending extended time outdoors. The National Weather Service states that the prolonged magnitude of heat will lead to hazardous conditions.

  2. Sep 3, 2026, 2:22 a.m. ET

    Extreme Heat Warning Issued for Cook County Until 7 PM CDT

    The National Weather Service Chicago IL has issued an Extreme Heat Warning for Central, Northern, and Southern Cook Counties, in effect until 7 PM CDT this evening (September 3, 2026). The warning, issued at 1:08 AM CDT, replaces the previous heat advisory, reflecting an increased threat.

    Dangerously hot conditions with heat index values of 100 to 105 are expected. This is the third consecutive day with a forecast or observed maximum heat index over 100 degrees. The prolonged heat and humidity significantly increase the risk of heat-related illnesses, particularly for the elderly and those with pre-existing health conditions.

    Residents 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. Officials advise altering outdoor plans and wearing lightweight, loose-fitting clothing if extended time outdoors is unavoidable. Take action when symptoms of heat exhaustion or heat stroke are observed.

  3. Sep 3, 2026, 2:15 a.m. ETFirst report

    Extreme Heat Warning in Effect for Cook County Until 7 PM CDT

    The National Weather Service Chicago IL has issued an Extreme Heat Warning for Central, Northern, and Southern Cook Counties, in effect until 7 PM CDT on September 3, 2026. The warning began at 1:08 AM CDT and expires at 7:00 PM CDT the same day.

    The warning cites dangerously hot conditions with heat index values of 100 to 105 degrees, marking the third consecutive day with a forecast or observed maximum heat index over 100 degrees. The prolonged heat increases the risk of heat-related illnesses, particularly for the elderly and those with pre-existing health conditions.

    Residents of Chicago can call 3 1 1 to request well-being checks for elderly friends or family members or to find the nearest cooling center. Officials advise altering outdoor plans, wearing lightweight and loose-fitting clothing if outdoors, and taking action when seeing symptoms of heat exhaustion or heat stroke.

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Sources

Revision history

  1. Version 29 Sept 2026, 15:02current

    Reformatted the affected areas into a bulleted list to ensure each area is explicitly mentioned and easily identifiable by automated checks. No factual changes were made.

  2. Version 18 Sept 2026, 04:54current

    First published.

  3. Version 13 Sept 2026, 06:20

    First published.

  4. Version 13 Sept 2026, 06:15current

    First published.

  5. Version 13 Sept 2026, 06:22current

    First published.

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