Special Marine Warning for Biscayne Bay and South Florida Coastal Waters
July 26, 2026 – Boaters and beachgoers across South Florida should exercise extreme caution after a Special Marine Warning was issued for Biscayne Bay and the Atlantic coastal waters from Deerfield Beach to Ocean Reef, Florida, extending out 20 nautical miles. The warning is associated with strong thunderstorms capable of producing hazardous marine conditions.
These storms can quickly create dangerous conditions over the water, including:
- Wind gusts exceeding 34 knots (39 mph)
- Frequent cloud-to-water lightning
- Torrential rainfall reducing visibility
- Rough, choppy seas
- Small hail in stronger storm cells
- Sudden waterspout development
Dangerous Conditions Can Develop Rapidly
Marine thunderstorms along Florida’s Atlantic Coast are capable of intensifying with little warning. Even experienced boaters can find themselves in dangerous conditions within minutes as wind speeds increase and waves build rapidly.
The affected area includes:
- Biscayne Bay
- Coastal waters from Deerfield Beach to Ocean Reef
- Atlantic waters extending 20 nautical miles offshore
Anyone currently on the water should monitor weather radar and NOAA Weather Radio for updated warnings.
What Boaters Should Do
If you are on the water:
- Return to shore immediately if it is safe to do so.
- Seek safe harbor before storms arrive.
- Avoid open water during lightning.
- Secure loose equipment aboard your vessel.
- Wear a properly fitted life jacket.
- Stay informed through the latest marine weather updates.
Beachgoers Should Remain Alert
Thunderstorms moving across coastal waters can also impact nearby beaches. Lightning can strike well away from the heaviest rainfall, making beaches and piers especially dangerous during approaching storms.
Swimmers should leave the water immediately at the first sound of thunder and wait until conditions have improved.
Continue Monitoring Weather Conditions
Marine warnings may be upgraded, extended, or canceled as thunderstorms evolve throughout the day. Anyone planning boating, fishing, or other recreational activities along South Florida’s Atlantic Coast should continue monitoring the latest forecasts and marine alerts before heading onto the water.
Stay with Radar Watch HQ for the latest marine warnings, severe weather updates, and real-time forecasts to help keep you and your family safe.
Radar Watch HQ Top 5 Marine Essentials
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🌊 1. U.S. Coast Guard-Approved Life Jacket
A properly fitted life jacket is the most important piece of safety equipment for every passenger onboard.
Best for: Recreational boaters, anglers, kayakers, and paddleboarders.
⚓ 2. Marine Emergency Radio (NOAA Weather Radio)
Receive real-time NOAA Weather Radio alerts, marine forecasts, and emergency warnings—even when cell service is unavailable.
Best for: Offshore and coastal boating.
🔦 3. Rechargeable Waterproof LED Flashlight
A bright waterproof flashlight is essential for emergencies, low visibility, nighttime navigation, and signaling for help.
Best for: Every boat emergency kit.
🧰 4. Marine First Aid Kit
A waterproof first aid kit stocked with bandages, antiseptic, medications, and emergency supplies for injuries on the water.
Best for: Every vessel, regardless of size.
🧭 5. Waterproof Dry Bag
Protect phones, wallets, charts, keys, electronics, and emergency supplies from water damage during storms or rough seas.
Best for: Boaters, kayakers, paddleboarders, and beachgoers.
🛒 Radar Watch HQ Marine Safety Picks
Prepare before you head out on the water. Our recommended marine safety essentials can help keep you and your crew safe during changing weather conditions.
