Special Weather Statement
Area: Patapsco River including Baltimore Harbor; District of Columbia; Washington; Frederick; Carroll; Northern Baltimore; Cecil; Southern Baltimore; Prince Georges; Anne Arundel; Charles; St. Marys; Calvert; Extreme Wester...
Localized dense fog with visibilities dropping below one-quarter of a mile has formed. The fog is patchy but locally very dense, so sudden drops in visibilities when traveling our expected. Motorists should use extreme caution when driving this morning. Reduce speed, leave extra travel time and following distance, and use low beam headlights.
What it means: A heads-up about conditions that do not meet warning or advisory criteria but still deserve attention, such as a strong storm, patchy fog or a brief burst of snow.
Full alert with map and forecast →