Heat Advisory: Inland Volusia; Northern Lake County; Orange; Seminole; Coastal Volusia; Southern Lake County; Inland Northern Brevard; Mainland Northern Brevard; Northern Brevard Barrier Islands; Inland Southern Brevard; Mainland Southern Brevard; Southern Brevard Barrier Islands

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Heat Advisory — Inland Volusia; Northern Lake County; Orange; Seminole; Coastal Volusia; Southern Lake County; Inland Northern Brevard; Mainland Northern Brevard; Northern Brevard Barrier Islands; Inland Southern Brevard; Mainland Southern Brevard; Southern Brevard Barrier Islands Severity: Moderate. Certainty: Likely. * WHAT...Heat index values up to 109 expected. * WHERE...Volusia, Brevard, Lake, Orange, and Seminole counties. * WHEN...From noon to 7 PM EDT Saturday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses.