Special Marine Warning Issued for Coastal Waters off Northeast Florida
This alert is no longer in effect.
NOAA issued it on July 27, 2026, 3 weeks 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.
NWS Jacksonville has issued a Special Marine Warning for coastal waters from Fernandina Beach to St. Augustine FL until 9:00 PM EDT due to a strong thunderstorm with wind gusts to 40 knots.
Read this weather record in 30 seconds
- Record type
- Special Marine Warning
- Affected area
- Coastal waters off Northeast Florida
- Issued
- July 27, 2026
- Issuing authority
- NWS Jacksonville FL
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 3 weeks ago; use the issuing agency's live warning service for current conditions in Coastal waters off Northeast Florida.
Alert Details
A Special Marine Warning has been issued by the National Weather Service Jacksonville FL. The alert is effective from June 20 at 7:52 PM EDT until June 20 at 9:00 PM EDT.
Affected Areas
Coastal waters from Fernandina Beach to St. Augustine FL out 20 NM and waters from Fernandina Beach to St. Augustine FL from 20 to 60 NM. Locations impacted include Casablanca Reef.
What You Should Do
Move to safe harbor until hazardous weather passes. If your vessel is caught offshore, immediately secure for heavy weather. Ensure all crew members are wearing USCG approved Type I life jackets and nonessential crew are below decks. Deploy jack lines and harnesses if available. Check life saving equipment, including batteries on handheld radios, for readiness.
Expected Conditions
At 7:52 PM EDT, a strong thunderstorm was located 14 nm east of Jacksonville Beach, or 27 nm north of Saint Augustine, moving east at 25 knots. Hazard includes wind gusts to 40 knots.
Timeline
The warning is in effect from June 20 at 7:52 PM EDT until June 20 at 9:00 PM EDT.
Original source: NOAA Official Notice ↗
Related Weather Alerts
All Weather Alerts →Nationwide notices with similar length or severity timing 8
Two Areazine-derived peer sets for this NWS weather alert: nearest notices by body length and by same severity near the same agency date. Peers come from other categories so they are not the same-feed Related list above.
Similar body length
Nearest notices by article body length (1,079 characters here).
Similar severity timing
Same severity (high) notices issued closest in time to July 27, 2026.
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Common questions about this NWS weather alert.