Expected

Responsive action SHOULD be taken soon (within next hour)

Illinois Severe Extreme Heat Warning | Effective 07/27/2026 01:02

* WHAT...Dangerously hot conditions with peak heat index values 110 to locally over 115 degrees expected. * WHERE...Ford County. * WHEN...Until 9 PM CDT this evening. * IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events. Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors.

Arizona, California Severe Extreme Heat Warning | Effective 07/27/2026 00:48

* WHAT...Dangerously hot conditions. Afternoon temperatures 109 to 116. Major Heat Risk. * WHERE...Portions of southwest Arizona and southeast California. * WHEN...Until 8 PM MST /8 PM PDT/ Wednesday. * IMPACTS...Heat related illnesses increase significantly during extreme heat events. Overexposure can cause heat cramps and heat exhaustion to develop and, without intervention, can lead to heat stroke. An Extreme Heat Warning means that a period of very hot temperatures,

Arizona Severe Extreme Heat Warning | Effective 07/27/2026 00:48

* WHAT...Dangerously hot conditions. Afternoon temperatures 104 to 113. Major Heat Risk. * WHERE...Portions of South-central Arizona. * WHEN...Until 8 PM MST this evening. * IMPACTS...Heat related illnesses increase significantly during extreme heat events. Overexposure can cause heat cramps and heat exhaustion to develop and, without intervention, can lead to heat stroke. * ADDITIONAL DETAILS...In Maricopa County, Call 2-1-1 to find a free cooling center, transportation, water and more.

Arizona, California Severe Extreme Heat Warning | Effective 07/27/2026 00:48

* WHAT...Dangerously hot conditions. Afternoon temperatures 110 to 115 degrees. Major Heat Risk. * WHERE...Mostly rural portions of southwest Arizona and southeast California, including Joshua Tree National Park. * WHEN...Until 8 PM MST /8 PM PDT/ this evening. * IMPACTS...Heat related illnesses increase significantly during extreme heat events. Overexposure can cause heat cramps and heat exhaustion to develop and, without intervention, can lead to heat stroke.

Arizona Severe Extreme Heat Warning | Effective 07/27/2026 00:48

* WHAT...Dangerously hot conditions. Afternoon temperatures 108 to 113. Major Heat Risk. * WHERE...South central Arizona, including the Phoenix metropolitan area. * WHEN...Until 8 PM MST Wednesday. * IMPACTS...Heat related illnesses increase significantly during extreme heat events. Overexposure can cause heat cramps and heat exhaustion to develop and, without intervention, can lead to heat stroke. * ADDITIONAL DETAILS...In Maricopa County, Call 2-1-1 to find a free

Montana Severe Extreme Heat Warning | Effective 07/27/2026 00:24

* WHAT...Dangerously hot conditions with temperatures up to 103 degrees. * WHERE...Carter, Custer, and Fallon. * WHEN...Until midnight MDT tonight. * IMPACTS...Hot temperatures may cause heat illnesses. * ADDITIONAL DETAILS...Dangerously hot daytime temperatures combined with warm overnight low temperatures will produce cumulative heat stress. This heat stress will quickly become dangerous to anyone without adequate cooling and hydration. Drink plenty of fluids, stay in an air-conditioned room, stay out of

Kansas Severe Extreme Heat Warning | Effective 07/27/2026 00:24

* WHAT...Dangerously hot conditions with peak heat index values of 108 to 114. * WHERE...Portions of central, east central, north central, and northeast Kansas. * WHEN...Until 9 PM CDT this evening. * IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and

Kansas Severe Extreme Heat Warning | Effective 07/27/2026 00:24

* WHAT...For the Extreme Heat Warning, dangerously hot conditions with heat index values reaching 108 to 114. For the Extreme Heat Watch, dangerously hot conditions with peak heat index values around 105 possible. * WHERE...Anderson, Coffey, Douglas, Franklin, Lyon, Osage, and Shawnee Counties. * WHEN...For the Extreme Heat Warning, until 9 PM CDT this evening. For the Extreme Heat Watch, from this evening through Tuesday evening. * IMPACTS...Heat related illnesses increase significantly during

Illinois Severe Extreme Heat Warning | Effective 07/27/2026 00:02

* WHAT...Dangerously hot conditions with afternoon heat index values up to 115. * WHERE...Portions of central, east central and southeast Illinois. * WHEN...Until 9 PM CDT this evening. * IMPACTS...Extreme heat and humidity will significantly increase the potential for heat related illnesses, particularly for those working or participating in outdoor activities. * ADDITIONAL DETAILS...Thunderstorms could move into area late this afternoon or evening, cooling temperatures and heat indices.

Illinois Severe Extreme Heat Warning | Effective 07/27/2026 00:02

* WHAT...Dangerously hot conditions with afternoon and early evening heat index values up to 115. * WHERE...Portions of central and west central Illinois. * WHEN...Until 9 PM CDT this evening. * IMPACTS...Extreme heat and humidity will significantly increase the potential for heat related illnesses, particularly for those working or participating in outdoor activities. * ADDITIONAL DETAILS...Thunderstorms could move into area late this afternoon or evening, cooling temperatures and heat indices.
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