Special Marine Warning Issued for Northeast Florida Coastal Waters Until 9:00 PM EDT
This alert is no longer in effect.
NOAA issued it on April 4, 2026, 4 months ago. Warnings of this kind stay in effect for hours to a few days, so this page is a historical record of what was issued, not a current warning. For conditions where you are right now, check weather.gov (US), weather.gc.ca (Canada), the Met Office (UK), or the Bureau of Meteorology (Australia).
Areazine synthesizes this NWS weather alert directly from NOAA's official public data feed. See our methodology for full source attribution and refresh cadence.
The National Weather Service has issued a Special Marine Warning for coastal and offshore waters from Fernandina Beach to Flagler Beach as strong thunderstorms bring 40-knot wind gusts.
Read this weather record in 30 seconds
- Record type
- Special Marine Warning
- Affected area
- Northeast Florida Coastal Waters
- Issued
- April 4, 2026
- Issuing authority
- NWS Jacksonville
Marine notices apply to named waters or shoreline zones. They may not describe conditions on land, even when the nearest place name is the same.
Record status: historical. It was issued 4 months ago; use the issuing agency's live warning service for current conditions in Northeast Florida Coastal Waters.
Alert Details
The National Weather Service in Jacksonville FL has issued a Special Marine Warning (SMWJAX) for coastal and offshore waters in Northeast Florida. The alert is effective immediately and remains in place until 9:00 PM EDT on March 15, 2026.
Affected Areas
The warning covers the following geographic regions:
- Coastal waters from Fernandina Beach to St. Augustine FL out 20 NM
- Coastal waters from St. Augustine to Flagler Beach FL out 20 NM
- Waters from Fernandina Beach to St. Augustine FL from 20 to 60 NM
- Waters from St. Augustine to Flagler Beach FL from 20 to 60 NM
Specific locations impacted include Casablanca Reef, Atlantic Beach, Dorothy Louise Barge, Saint Augustine Beach, Mayport, Nassau Sound Approach Buoy 6a, Tournament Reef, Anna Reef, Amelia City, South Ponte Vedra Beach, Nine Mile Reef, Talbot Island, Saint Johns Lighted Buoy, Navy Drydock, Jacksonville Beach, Vilano Beach, Palm Valley, and Saint Augustine.
What You Should Do
Mariners are advised to move to safe harbor immediately until hazardous weather passes. If your vessel is caught offshore, secure it for heavy weather. Ensure all crew members are wearing USCG approved Type I life jackets and move nonessential crew below decks. Deploy jack lines and harnesses if available. Check all life-saving equipment, including batteries on handheld radios, for readiness.
Expected Conditions
Radar indicates strong thunderstorms moving northeast at 25 knots. These storms are capable of producing wind gusts up to 40 knots. Small craft could be damaged in briefly higher winds and suddenly higher waves. As of 7:30 PM EDT, storms were located along a line extending from Atlantic Beach to near Butler Beach, with additional storms positioned 55 NM from St. Augustine Beach.
Timeline
The alert was issued at 7:30 PM EDT and is expected to expire at 9:00 PM EDT on March 15, 2026.
Original source: NOAA Official Notice ↗
Related Weather Alerts
All Weather Alerts →Frequently Asked Questions
Common questions about this NWS weather alert.