6/20/2025 2:19:00 PM until 6/21/2025 4:30:00 AM

Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors.

* WHAT...Dangerously hot conditions with heat index values up to or exceeding 105 degrees possible. * WHERE...In New York, Broome, Chemung, Onondaga, Schuyler, Sullivan, Tioga, and Tompkins Counties. In Pennsylvania, Bradford, Lackawanna, Luzerne, Northern Wayne, Pike, Southern Wayne, Susquehanna, and Wyoming Counties. * WHEN...From Sunday afternoon through Wednesday evening. * IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events. * ADDITIONAL DETAILS...The highest temperatures and heat indices are likely to occur in the valley locations. There will be little overnight relief with lows only dropping into the 70s in many locations. Additional surrounding locations may need heat headlines if confidence continues to grow.