Heat Advisory issued July 3 at 1:18AM EDT until July 4 at 8:00PM EDT by NWS Baltimore MD/Washington DC

* WHAT...
For the Extreme Heat Warning, dangerously hot conditions with heat index values up to 107 expected. For the Heat Advisory, heat index values up to 105 expected.

* WHERE...
Portions of north central Maryland, northwest Virginia, and eastern and panhandle West Virginia.

* WHEN...
For the Extreme Heat Warning, from 10 AM this morning to 8 PM EDT this evening. For the Heat Advisory, from 10 AM to 8 PM EDT Saturday.

* IMPACTS...
Heat related illnesses increase significantly during extreme heat and high humidity events. Hot temperatures and high humidity may cause heat illnesses.

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