Severe

Significant threat to life or property

Illinois Severe Flood Warning | Effective 08/01/2026 12:42

...The Flood Warning continues for the following rivers in Illinois... Du Page River at Shorewood affecting Will County. For the Du Page River...including Plainfield, Shorewood...Minor flooding is forecast. * WHAT...Minor flooding is forecast. * WHERE...Du Page River from IL-59 in Plainfield downstream to confluence with Des Plaines River, including the Shorewood gauge. * WHEN...From late tonight to Sunday evening. * IMPACTS...At 16.0 feet, Clark Drive threatened in Shorewood. * ADDITIONAL DETAILS...

Illinois Severe Flood Warning | Effective 08/01/2026 12:44

...The National Weather Service in Chicago has issued a Flood Warning for the following rivers in Illinois... Thorn Creek at Thornton affecting Cook County. For the Thorn Creek...including Thornton...Minor flooding is forecast. * WHAT...Minor flooding is forecast. * WHERE...Thorn Creek from Near Glenwood downstream to confluence with Little Calumet River, including the Thornton gauge. * WHEN...Until Sunday morning. * IMPACTS...At 9.0 feet, Water begins to be diverted through Thorn Creek Diversion Tunnel. * ADDITIONAL DETAILS...

Arizona, California Severe Extreme Heat Warning | Effective 08/01/2026 12:19

* WHAT...Dangerously hot conditions. Afternoon temperatures 112 to 120. Major to Extreme Heat Risk. * WHERE...In Arizona, Parker Valley and Yuma. In California, Chuckwalla Valley, Imperial Valley, and Palo Verde Valley. * WHEN...Until 8 PM MST /8 PM PDT/ Monday. * IMPACTS...Increase in heat related illnesses, including heat cramps, heat exhaustion, and heat stroke. Heat stroke can lead to death. An Extreme Heat Warning means that a period of very hot temperatures,

Arizona Severe Extreme Heat Warning | Effective 08/01/2026 12:19

* WHAT...Dangerously hot conditions. Afternoon temperatures 98 to 114. Major to Extreme Heat Risk. * WHERE...Southern Gila County and portions of northern Pinal County and eastern Maricopa County. * WHEN...Until 8 PM MST Monday. * IMPACTS...Increase in heat related illnesses, including heat cramps, heat exhaustion, and heat stroke. Heat stroke can lead to death. An Extreme Heat Warning means that a period of very hot temperatures, even by local standards, will occur. Actions should be taken to

Arizona Severe Extreme Heat Warning | Effective 08/01/2026 12:19

* WHAT...Dangerously hot conditions. Afternoon temperatures 109 to 118. Major to Extreme Heat Risk. * WHERE...Mostly rural areas of Maricopa County and northern Pinal County. * WHEN...Until 8 PM MST Monday. * IMPACTS...Increase in heat related illnesses, including heat cramps, heat exhaustion, and heat stroke. Heat stroke can lead to death. * ADDITIONAL DETAILS...In Maricopa County, Call 2-1-1 to find a free cooling center, transportation, water and more. https://www.maricopa.gov/heat

Arizona Severe Extreme Heat Warning | Effective 08/01/2026 12:19

* WHAT...Dangerously hot conditions. Afternoon temperatures 110 to 117. Major to Extreme Heat Risk. * WHERE...The Phoenix metropolitan area. * WHEN...Until 8 PM MST Monday. * IMPACTS...Increase in heat related illnesses, including heat cramps, heat exhaustion, and heat stroke. Heat stroke can lead to death. * ADDITIONAL DETAILS...In Maricopa County, Call 2-1-1 to find a free cooling center, transportation, water and more. https://www.maricopa.gov/heat

Arizona, California Severe Extreme Heat Warning | Effective 08/01/2026 12:19

* WHAT...Dangerously hot conditions. Afternoon temperatures 108 to 119. Major to Extreme 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/ Monday. * IMPACTS...Heat related illnesses increase significantly during extreme heat events. An Extreme Heat Warning means that a period of very hot temperatures, even by local standards, will occur. Actions should be taken to lessen the impact of the extreme heat.

Illinois Severe Flash Flood Warning | Effective 08/01/2026 12:20

At 205 PM CDT, emergency management reported thunderstorms producing heavy rain in Danville. Between 2 and 3.5 inches of rain have fallen. Flash flooding is already occurring. HAZARD...Flash flooding caused by thunderstorms. SOURCE...Emergency management reported. IMPACT...Flash flooding of small creeks and streams, urban areas, highways, streets and underpasses as well as other poor drainage and low-lying areas. Some locations that will experience flash flooding include...

South Carolina Severe Flash Flood Warning | Effective 08/01/2026 12:27

FFWCAE The National Weather Service in Columbia has issued a * Flash Flood Warning for... Northeastern Lexington County in central South Carolina... Central Richland County in central South Carolina... * Until 630 PM EDT. * At 327 PM EDT, Doppler radar indicated thunderstorms producing heavy rain across the warned area. Between 1 and 2 inches of rain have fallen. The expected rainfall rate is 1 to 2 inches in 1 hour. Additional rainfall amounts of 1 to 2 inches are possible in the

Montana, Wyoming Severe Red Flag Warning | Effective 08/01/2026 12:28

The National Weather Service in Riverton has issued a Red Flag Warning, which is in effect from 1 PM to 9 PM MDT Sunday. the Fire Weather Watch is no longer in effect. * IMPACTS: Low Humidities...Hot Temperatures...and Strong Gusty Winds could cause erratic fire behavior. * AFFECTED AREA: In Central WY Fire Zones...283...285. In North Central WY Fire Zones...275...276...282. * COUNTIES AFFECTED: In Central WY...Fremont...Natrona. In North Central WY...Big Horn...Hot Springs...Johnson...Park
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