Heat Advisory issued June 22 at 2:21PM EDT until June 22 at 8:00PM EDT by NWS Baltimore MD/Washington DC

* WHAT...
For the Heat Advisory, heat index values up to 104. For the Extreme Heat Warning, dangerously hot conditions with heat index values up to 107 expected. For the Extreme Heat Watch, dangerously hot conditions with heat index values up to 107 possible.

* WHERE...
In Maryland, Washington County. In Virginia, Clarke, Frederick, Page, Shenandoah, and Warren Counties. In West Virginia, Berkeley and Jefferson Counties.

* WHEN...
For the Heat Advisory, until 8 PM EDT this evening. For the Extreme Heat Warning, from 11 AM to 9 PM EDT Monday. For the Extreme Heat Watch, from Tuesday morning through Tuesday evening.

* 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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