* WHAT...Dangerously hot conditions with heat index values up to 105 possible.
* WHERE...In New Jersey, Morris, Sussex, Warren, and Hunterdon Counties. In Pennsylvania, Berks, Lehigh, Northampton, Upper Bucks, Western Chester, and Western Montgomery Counties.
* WHEN...From Wednesday afternoon through Saturday evening.
* IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events.