* WHAT...Dangerously hot conditions with heat index values as high as 105 expected.
* WHERE...Niagara, Orleans, Monroe, Wayne, Northern Cayuga, Oswego, Livingston, and Ontario Counties.
* WHEN...From noon Wednesday to 8 PM EDT Friday.
* IMPACTS...Extreme heat and humidity will significantly increase the potential for heat related illnesses, particularly for those working or participating in outdoor activities.