Interactive NWS Alert

Radar valid at 800 pm EDT, Jul 17th 2025

MDZ004>006-503>507-VAZ501-502-505-506-526-172045-
/O.EXA.KLWX.HT.Y.0007.250717T1500Z-250718T0000Z/
Frederick MD-Carroll-Northern Baltimore-Northwest Montgomery-
Central and Southeast Montgomery-Northwest Howard-Central and
Southeast Howard-Northwest Harford-Northern Fauquier-Southern
Fauquier-Western Loudoun-Eastern Loudoun-Northwest Prince William-
840 AM EDT Thu Jul 17 2025

...HEAT ADVISORY IN EFFECT UNTIL 8 PM EDT THIS EVENING...

* WHAT...Heat index values around 105 expected.

* WHERE...Portions of central, north central, and northern Maryland
and northern Virginia.

* WHEN...Until 8 PM EDT this evening.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

&&

iNWS is an experimental service intended for NWS core partners, including emergency managers, community leaders and other government agencies only.