Excessive Heat Warning issued July 18 at 5:42PM CDT until July 19 at 8:00PM CDT by NWS

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…EXCESSIVE HEAT WARNING NOW IN EFFECT UNTIL 8 PM CDT WEDNESDAY… * WHAT…For the Excessive Heat Warning, dangerously hot conditions with heat index values up to 110. * WHERE…Grayson, Fannin, Collin and Navarro Counties. * WHEN…Until 8 PM CDT Wednesday.