The National Weather Service has issued a heat advisory for the Tri-State area for Friday afternoon and early evening due to excessive heat conditions in which the heat index could reach up to 106 to 109 degrees in some areas.
The heat advisory is in effect from noon to 8 p.m. Friday for areas that include Washington and Frederick counties in Maryland, Franklin and Fulton counties in Pennsylvania and Berkeley, Jefferson and Morgan counties in West Virginia.
The heat indices are forecast to reach higher temperatures in urban areas and in Frederick County, east of the mountains, said meteorologist Erik Taylor with the Baltimore-Washington Forecast Office.
For Friday, the peak heat indices are forecast to be:
- In Washington, Berkeley, Jefferson and Morgan counties, between 103 and 105 degrees.
- In more urban areas like Hagerstown and in Martinsburg and Berkeley Springs in West Virginia the heat index is expected to be on the higher end, around 105 to 106 degrees.
- In Franklin and Fulton counties in Pennsylvania, up to 103 degrees. Though that could go up or down a little depending on cloud cover, said meteorologist Barry Lambert with the State College, Pa., Forecast Office.
- In Frederick County, Md., with the exception of the Thurmont area, up to 108, 109 degrees. This includes downtown Frederick and the urban corridor along Interstate 270.
- In Frederick County up toward the Catoctin Mountains, including the Thurmont area, around 100 to 105 degrees.