Weather Alerts For Ashburn, VA

URGENT - WEATHER MESSAGE National Weather Service Baltimore MD/Washington DC 909 PM EST Wed Mar 4 2026 Northwest Montgomery-Central and Southeast Montgomery-Northwest Howard-Central and Southeast Howard-Madison-Rappahannock-Culpeper- Fairfax-Northern Fauquier-Southern Fauquier-Western Loudoun- Eastern Loudoun-Northwest Prince William-Central and Southeast Prince William/Manassas/Manassas Park- 909 PM EST Wed Mar 4 2026 ...DENSE FOG ADVISORY REMAINS IN EFFECT UNTIL 10 AM EST THURSDAY... * WHAT...Visibility one quarter mile or less in dense fog. * WHERE...Portions of central Maryland and northern and northwest Virginia. * WHEN...Until 10 AM EST Thursday. * IMPACTS...Low visibility could make driving conditions hazardous. PRECAUTIONARY/PREPAREDNESS ACTIONS... If driving, slow down, use your headlights, and leave plenty of distance ahead of you. &&