Extreme Heat Watch: Yates; Seneca; Southern Cayuga; Onondaga; Steuben; Schuyler; Chemung; Tompkins; Madison; Southern Oneida; Cortland; Chenango; Tioga; Broome

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Extreme Heat Watch — Yates; Seneca; Southern Cayuga; Onondaga; Steuben; Schuyler; Chemung; Tompkins; Madison; Southern Oneida; Cortland; Chenango; Tioga; Broome Severity: Severe. Certainty: Likely. * WHAT...For the Heat Advisory, heat index values up to 98 expected. For the Extreme Heat Watch, dangerously hot conditions with heat index values up to 105 possible. * WHERE...Broome, Chemung, Chenango, Cortland, Madison, Onondaga, Schuyler, Seneca, Southern Cayuga, Southern Oneida, Steuben, Tioga, Tompkins, and Yates Counties. * WHEN...For the Heat Advisory, from noon today to 8 PM EDT this evening. For the Extreme Heat Watch, from Wednesday morning through Friday evening. * IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events. Hot temperatures and high humidity may cause heat illnesses. * ADDITIONAL DETAILS...The hottest temperatures will be in urban valley locations during the mid to late afternoon period.