* WHAT...Heat index values near 100 degrees expected.
* WHERE...Cameron, Elk, McKean, Northern Centre, Northern Clinton, Northern Lycoming, Potter, Sullivan, Tioga, and Warren Counties.
* WHEN...Until 8 PM EDT this evening.
* IMPACTS...Hot temperatures and high humidity may cause heat illnesses.
* ADDITIONAL DETAILS...Temperatures will remain warmer than normal for the next couple of days, but the heat index should remain below a concerning level of 100 degrees.