Special Marine Warning Issued for Biscayne Bay and Southeast Florida Coastal Waters
This alert is no longer in effect.
NOAA issued it on April 6, 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 Biscayne Bay and coastal waters from Deerfield Beach to Ocean Reef until 2:15 PM EST due to a severe thunderstorm.
Read this weather record in 30 seconds
- Record type
- Special Marine Warning
- Affected area
- Southeast Florida Coastal Waters
- Issued
- April 6, 2026
- Issuing authority
- NWS Miami
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 Southeast Florida Coastal Waters.
Alert Details
The National Weather Service in Miami has issued a Special Marine Warning for the coastal waters of Southeast Florida. This alert is classified as a severe threat with immediate urgency based on radar-detected storm activity.
Affected Areas
The warning covers Biscayne Bay and coastal waters from Deerfield Beach to Ocean Reef, FL, extending out 20 nautical miles. Specific locations impacted include:
- Virginia Key
- Key Biscayne
- Coral Gables
- Cape Florida
- Miami Beach
What You Should Do
Mariners are advised to move to safe harbor immediately until the hazardous weather conditions pass. Boaters should avoid the area if possible. Report severe weather sightings to the Coast Guard or the National Weather Service. Reports can also be shared with NWS Miami via their social media channels on Facebook and Twitter.
Expected Conditions
At 1:48 PM EST, radar indicated a severe thunderstorm located near Coral Gables. The storm is reported to be nearly stationary. Primary hazards include:
- Wind: Gusts of 34 knots or greater.
- Hail: Large hail is possible.
- Impacts: Small craft could be damaged in briefly higher winds and suddenly higher waves. Large hail could result in structural damage.
Timeline
The warning is effective as of 1:48 PM EST on March 1, 2026, and is scheduled to expire at 2:15 PM EST.
Original source: NOAA Official Notice ↗
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