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; at 12:39 AM on JUL 27, 2026 Effective until 3:09 AM. Message from ALPINE. 
Additional alert information
Originator FIPS Codes Start Time End Time Severity
WXR 073536 7/27/2026 4:39:00 AM (UTC)
3 months ago
7/27/2026 7:09:00 AM (UTC)
3 months ago
WARNING