On Tuesday at 12:54 a.m. an updated extreme heat watch was issued by the National Weather Service valid from Wednesday noon until Friday 8 p.m. for Niagara, Orleans, Monroe, Wayne, Cayuga, Oswego, Erie, Genesee, Livingston and Ontario counties.The weather service informs, "Dangerously hot conditions with heat index values as high as 105 degrees possible." ...read more read less