Published: July 9, 2026
A Special Marine Warning has been issued for the Straits of Florida from Craig Key to the west end of the Seven Mile Bridge, extending 20 to 60 nautical miles offshore, as strong thunderstorms move across the coastal waters. Boaters should prepare for rapidly changing marine conditions, including dangerous wind gusts, rough seas, lightning, and reduced visibility.
Marine Warning Area
The warning includes offshore waters:
- Straits of Florida from Craig Key to the west end of the Seven Mile Bridge
- 20 to 60 nautical miles offshore
- Florida Keys coastal waters
These waters are heavily traveled by recreational boaters, fishing charters, commercial vessels, and divers, making severe marine weather especially hazardous.
Primary Hazards
Boaters can expect dangerous conditions that may include:
- Strong thunderstorm wind gusts capable of exceeding 34 knots
- Frequent cloud-to-water lightning
- Heavy rainfall causing sharply reduced visibility
- Rough, rapidly building seas
- Hazardous conditions for small vessels
- Locally dangerous waves near thunderstorms
Why Special Marine Warnings Matter
Unlike routine marine forecasts, a Special Marine Warning is issued when severe thunderstorms produce conditions that pose an immediate threat to boats on the water. Even experienced mariners can quickly encounter life-threatening weather as thunderstorms strengthen over warm coastal waters.
Storms can intensify rapidly in the Florida Keys, producing sudden wind shifts and steep waves with little warning.
Marine Safety Tips
If you are on the water:
- Head to the nearest safe harbor immediately.
- Do not attempt to outrun approaching thunderstorms.
- Secure loose equipment onboard.
- Everyone should wear a properly fitted U.S. Coast Guard-approved life jacket.
- Stay inside the cabin whenever possible during lightning.
- Monitor NOAA Weather Radio and official weather updates.
- Avoid open water until storms have completely passed.
Forecast Outlook
Following the warning, moderate to fresh easterly winds are expected to continue across the Florida Keys, with scattered showers and thunderstorms remaining possible through Friday. Seas may build to 4 to 6 feet offshore, creating hazardous conditions for smaller vessels.
Stay Weather Aware
Anyone planning boating, fishing, snorkeling, or diving trips in the Florida Keys should closely monitor the latest marine forecasts and warnings before leaving port. Conditions over the Straits of Florida can deteriorate in minutes when thunderstorms develop.
Radar Watch HQ will continue monitoring this marine warning and provide updates as additional information becomes available.
Affiliate Disclosure: As an Amazon Associate, Radar Watch HQ earns from qualifying purchases.
🛒 Top 5 Radar Watch HQ Marine Essentials
Prepare before heading offshore. Browse these trusted marine safety essentials to help keep you and your crew ready for changing conditions.
- 🚤 U.S. Coast Guard-Approved Life Jackets – Essential safety gear for every passenger.
- 📻 NOAA Weather Radio – Receive marine warnings and weather alerts even when cell service is unavailable.
- 🔦 Waterproof Emergency Flashlight & Extra Batteries – Reliable lighting during storms or emergencies.
- 🆘 Floating Marine Emergency Kit – Includes first aid supplies, signaling devices, and other boating essentials.
- 📱 Waterproof Phone Case & Portable Power Bank – Protect your phone while keeping it charged for navigation and emergency communication.
