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Extreme Heat Warning — Grand Canyon Country Severity: Severe. Certainty: Likely. * WHAT...Dangerously hot conditions expected below 4000 feet, with daytime temperatures ranging from 96 to 102 degrees at Havasupai Gardens, and 107 to 111 degrees at Phantom Ranch. * WHERE...Lower elevations of the Grand Canyon. * WHEN...Until 8 PM MST Thursday. * IMPACTS...Most individuals will be at risk for heat-related illnesses without effective cooling or adequate hydration, especially with prolonged outdoor exposure.
The historical document was shared with another weather alert and cannot be attributed to this record. The original extract is preserved above; the exact alert link was not retained.