Add Chenango and Cortland Counties to the National Weather Service's Heat Advisory region for June 29.

The two counties were left out of a Heat Advisory issued by the Binghamton office for June 28 but NOAA's statement for the second day of an oppressive heat system expanded to include more counties in the Southern Tier and Central New York but still leaves Delaware County and the Northern Tier of Pennsylvania out.

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NOAA says a Heat Advisory is issued for 11 a.m. to 8 p.m. June 29 for Broome, Southern Cayuga, Chemung, Chenango, Cortland, Madison, Southern Oneida, Onondaga, Schuyler, Seneca, Steuben, Sullivan, Tioga, Tompkins and Yates Counties.

That includes the cities of Binghamton Norwich, Owego, Waverly, Syracuse, Corning and Ithaca.

Hot, humid conditions for a second day could pull the heat index values to as high as 95 to 100, greatly increasing chances of heat-related illness like heat exhaustion and stroke.

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Residents are again reminded to limit time outside of air conditioning, drink plenty of fluids, reschedule any strenuous activity to the early morning or evening, wear lightweight, loose fitting clothing, and know the signs and symptoms of heat exhaustion and heat stroke. Call 911 immediately for anyone overcome by heat and move that person to a cool, shaded location.

Never leave people or pets in vehicles even with the windows rolled down as the inside temperature can reach over 100 degrees in a matter of minutes and could be fatal.

There is a possibility the unstable atmospheric conditions with high humidity could trigger thunderstorms. Any storms that develop could be capable of producing heavy rain, which could lead to localized flash flooding.

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