* WHAT…Daily heat index values of 100 to 107.
* WHERE…Portions of southern Illinois, southwest Indiana, western
Kentucky, and southeast Missouri.
* WHEN…Until 7 PM CDT /8 PM EDT/ Friday.
* IMPACTS…Prolonged exposure to hot temperatures and high humidity
may cause heat illnesses.
* ADDITIONAL DETAILS…The first prolonged stretch of heat and
humidity of the season will amplify health impacts. Health impacts
will build with each successive day in the heat and humidity.
No watches are valid as of Thu Jun 26 17:39:01 UTC 2025.
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MD 1453 CONCERNING SEVERE POTENTIAL...WATCH POSSIBLE FOR SOUTHERN APPALACHIANS INTO NORTHERN GEORGIA Mesoscale Discussion 1453…
MD 1454 CONCERNING SEVERE POTENTIAL...WATCH LIKELY FOR EXTREME SOUTHEAST NE/NORTHEAST KS INTO NORTHWEST MO AND…
SPC 1730Z Day 2 Outlook Day 2 Convective Outlook NWS Storm Prediction Center Norman OK…
SPC 1630Z Day 1 Outlook Day 1 Convective Outlook NWS Storm Prediction Center Norman OK…
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