Special Marine Warning — Coastal waters from Altamaha Sound to Fernandina Beach FL out 20 NM; Coastal waters from Fernandina Beach to St. Augusti was recorded by Global Incident Tracker on Saturday, 12 September 2026 at 00:05 UTC. The event is classified as a storm incident with a severity rating of Severe, and was detected through the US National Weather Service (NWS).

Special Marine Warning issued September 11 at 8:05PM EDT until September 11 at 8:15PM EDT by NWS Jacksonville FL The affected areas were... Coastal waters from Altamaha Sound to Fernandina Beach FL out 20 NM... Coastal waters from Fernandina Beach to St. Augustine FL out 20 NM... Waters from Altamaha Sound GA to Fernandina Beach FL from 20 to 60 NM... Waters from Fernandina Beach to St. Augustine FL from 20 to 60 NM... The thunderstorms have weakened and no longer pose a significant threat to boaters.

Where this happened

The incident is located in United States (North America), whose capital is Washington, D.C.. Historically, United States is most affected by hurricanes, wildfires, tornadoes, earthquakes and floods. You can follow every incident recorded in this country, updated live, on the United States incident tracker.

Approximate coordinates of the reported event are 30.903°, -81.022°. The marker on the map above shows this position; for news-derived reports the location reflects the place named in media coverage and may represent a district or city rather than an exact site.

Understanding storm events

Severe thunderstorms, windstorms, hail and winter storms. Severe storms combine wind, lightning, hail and sudden downpours. Secondary effects — falling trees, power line damage and flash flooding on roads — cause the majority of injuries.

How severity is rated

Global Incident Tracker rates every event on a four-step scale — Minor, Moderate, Severe and Extreme — derived from the source signal: earthquake magnitude, official GDACS alert colour, or the volume of independent media reporting for news-derived incidents. This event is currently rated Severe. Ratings can change as more information becomes available, and a rating is a monitoring signal rather than an official government assessment.

Safety guidance for storm situations

  • Move indoors and away from windows; avoid sheltering under trees.
  • Unplug sensitive electronics and avoid using wired equipment during lightning.
  • Assume every downed power line is live and keep well clear.
  • Do not drive through flooded underpasses.
  • Follow only official instructions from local authorities and emergency services — this page is a monitoring record, not an emergency alert.

Data and verification

This record was generated automatically from the US National Weather Service (NWS) and de-duplicated against our archive. Early reports for any incident can be revised: locations get refined, magnitudes are recalculated and impact figures change as assessments arrive. We deliberately do not publish casualty numbers unless an official source states them. The original source report is linked at the top of this page.

Keep watching the situation on our live world incident map, browse every storms we track on the Storm tracker, or see today's global picture on the incidents today page.

Timeline and sources

Official warning

Issued by U.S. National Weather Service. A warning or forecast describes a hazard; on its own it is not a report that harm occurred.

How statuses are decided · the number of reports is never treated as confirmation.

  1. · received · event time 12 Sep 2026, 00:05 UTC
    First report Official warning

    First recorded from U.S. National Weather Service.

    U.S. National Weather Service ↗

  2. · received
    Also reported (2) Official warning

    2 more reports from U.S. National Weather Service. Reports from one feed are often copies of the same story, so they are not counted as independent confirmation. Links were not kept for reports merged before 13 September 2026.

    U.S. National Weather Service

Times are when this site received each report, in UTC; the event time is shown where the source gave one. 3 reports are attached to this incident. Copies of one syndicated story count as one report.

Conditions at the time

0.7mm
Rainfall that day
29°C
Maximum temperature
27°C
Minimum temperature
26km/h
Peak wind speed

Light rain of 0.7 mm was recorded, and the temperature peaked at 29°C. Conditions are shown for context only — they do not establish a cause.

Weather reanalysis for this location and date via Open-Meteo.