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Heat Advisory

Status

Event Extended (Area) Expired

Start Time

Thu 07/17/2025 11:00 AM EDT

End Time

Thu 07/17/2025 08:00 PM EDT

Significance

Advisory

Impacts

Low impact

Full Alert Message

URGENT - WEATHER MESSAGE National Weather Service Baltimore MD/Washington DC 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.

Technical Header

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