Heat Advisory

* WHAT...Heat index values up to 104 expected.

* WHERE...Adams, Cumberland, Franklin, Fulton, Lancaster, and York Counties.

* WHEN...From 11 AM to 8 PM EDT Wednesday.

* IMPACTS...Hot temperatures and high humidity may cause heat illnesses.

* ADDITIONAL DETAILS...Smoke aloft from wildfires in central Canada may help to lower the temperatures a degree or two from current expectations for Wednesday. If it does, that would help to lessen concerns for heat illnesses.