SMW sent by KNA/DAS
expired 3 months ago
The National Weather Service has issued A SPECIAL MARINE WARNING for the following counties or areas: Tidal Potomac from Indian Head to Cobb Island,MD, Northwest Atlantic; Northwest North Atlantic Ocean; at 5:41 PM on JUL 22, 2026 Effective until 6:41 PM. Message from ERN/CRTV. 
Additional alert information
Originator FIPS Codes Start Time End Time Severity
WXR 073536, 073542 7/22/2026 9:41:00 PM (UTC)
3 months ago
7/22/2026 10:41:00 PM (UTC)
3 months ago
WARNING