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🏛 Official alert Special Marine Warning Weather & disasters Serious

Special Marine Warning

N Issued by NWS Miami FL ⏳ In force until Sun 1 Nov, 18:45 📍 Biscayne Bay; Coastal waters from Deerfield Beach to Ocean Reef FL out 20 NM (approximate) 🕑 3 h ago
🌐 Translate: ·

SMWMFL The National Weather Service in Miami has issued a * Special Marine Warning for... Biscayne Bay... Coastal waters from Deerfield Beach to Ocean Reef FL out 20 NM... * Until 1045 AM EST. * At 1020 AM EST, a severe thunderstorm capable of producing waterspouts was located over Miami Beach, moving west at 10 knots. HAZARD...Waterspouts and wind gusts to 40 knots. SOURCE...Radar. IMPACT...Wate…

🗃 Archived report - it is no longer on the live map. Pages are kept for 30 days.

📡 CAP alert details

Common Alerting Protocol
Official alert linked ▾
⚠
SeveritySevere
⏱
UrgencyImmediate
❓
CertaintyLikely
EventSpecial Marine Warning
Response typeAvoid
CategoryMet
Affected areaBiscayne Bay; Coastal waters from Deerfield Beach to Ocean Reef FL out 20 NM
Issuing authorityNWS Miami FL
ContactNot supplied

🕓 Alert timing · EAT

Sent2026-11-01T10:20:00-05:00
Effective2026-11-01T10:20:00-05:00
Onset2026-11-01T10:20:00-05:00
Expires2026-11-01T10:45:00-05:00

📋 Official instructions

Move to safe harbor until hazardous weather passes. Report severe weather to the Coast Guard or the National Weather Service. You can also share your report with NWS Miami on Facebook and Twitter.

📄 Message details

Alert identifierurn:oid:2.49.0.1.840.0.9b2898ce8c50827023f1bb11bdd6d0117f501fd1.001.1
Message typeAlert
Senderw-nws.webmaster@noaa.gov
ScopePublic
CAP statusActual
Related messagesNot supplied
ⓘ CAP fields populate when an official alert is linked.

🛡 Safety advice

General guidance for this type of incident - not official instructions.
  • Move to safe harbor until hazardous weather passes. Report severe weather to the Coast Guard or the National Weather Service. You can also share your report with NWS Miami on Facebook and Twitter.
  • Stay aware of your surroundings in this area.
  • Follow official updates from the police and local authorities.
  • In an emergency call 112 (police) or 112 (ambulance), or request help through Jilinde.

📰 Story summary

From the report shown in the feed:
  • SMWMFL The National Weather Service in Miami has issued a * Special Marine Warning for...
  • Biscayne Bay...
  • Coastal waters from Deerfield Beach to Ocean Reef FL out 20 NM...
  • * Until 1045 AM EST.
  • * At 1020 AM EST, a severe thunderstorm capable of producing waterspouts was located over Miami Beach, moving west at 10 knots.
  • HAZARD...Waterspouts and wind gusts to 40 knots.
  • SOURCE...Radar.
  • IMPACT...Wate…
ⓘ News summary · read the original report for full context.

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