Extreme Heat Warning: Suwannee; Baker; Inland Nassau; Union; Bradford; Gilchrist; Inland Flagler; Eastern Hamilton; Coastal Nassau; Coastal Duval; Eastern Clay; Eastern Alachua; Eastern Putnam; Coastal Flagler; Eastern Marion; Western Hamilton; Trout River; Western Clay; Northeast Coastal St. Johns; Western Alachua; Western Putnam; Central Marion; Northern Columbia; South Central Duval; Southeast Coastal St. Johns; Western Marion; Southeastern Columbia; Western Duval; Northern Inland St. Johns; Southwestern Columbia; Southern Inland St. Johns; Western St. Johns; Inland Glynn; Coastal Glynn; Echols; Inland Camden; Coastal Camden

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Extreme Heat Warning — Suwannee; Baker; Inland Nassau; Union; Bradford; Gilchrist; Inland Flagler; Eastern Hamilton; Coastal Nassau; Coastal Duval; Eastern Clay; Eastern Alachua; Eastern Putnam; Coastal Flagler; Eastern Marion; Western Hamilton; Trout River; Western Clay; Northeast Coastal St. Johns; Western Alachua; Western Putnam; Central Marion; Northern Columbia; South Central Duval; Southeast Coastal St. Johns; Western Marion; Southeastern Columbia; Western Duval; Northern Inland St. Johns; Southwestern Columbia; Southern Inland St. Johns; Western St. Johns; Inland Glynn; Coastal Glynn; Echols; Inland Camden; Coastal Camden Severity: Severe. Certainty: Likely. * WHAT...Dangerously hot conditions with heat index values up to 115 expected. * WHERE...Northeast and north central Florida and portions of southeast Georgia. * WHEN...From 11 AM this morning to 8 PM EDT this evening. * IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events.