* WHAT...Heat index values between 100 to 103 expected each afternoon.
* WHERE...In Maryland, Extreme Western Allegany County. In Virginia, Eastern Highland County. In West Virginia, Eastern Pendleton and Western Mineral Counties.
* WHEN...For the first Heat Advisory, until 8 PM EDT this evening. For the second Heat Advisory, from 10 AM to 8 PM EDT Friday.
* IMPACTS...Hot temperatures and high humidity may cause heat illnesses.