434 

WHUS52 KKEY 031303

SMWKEY

GMZ054-074-031330-

/O.NEW.KKEY.MA.W.0270.250903T1303Z-250903T1330Z/



BULLETIN - IMMEDIATE BROADCAST REQUESTED

Special Marine Warning

National Weather Service Key West FL

903 AM EDT Wed Sep 3 2025



The National Weather Service in Key West has issued a



* Special Marine Warning for...

  Straits of Florida from west end of Seven Mile Bridge to Halfmoon

  Shoal out 60 nm...



* Until 930 AM EDT.



* At 902 AM EDT, a strong thunderstorm was located 11 nm south of

  Cosgrove Shoal Light, moving east at 20 knots.



  HAZARD...Wind gusts 34 knots or greater.



  SOURCE...Radar.



  IMPACT...Expect wind gusts in excess of 34 knots, suddenly higher 

           waves, frequent lightning, and heavy downpours.



* The strong thunderstorm will remain over mainly open waters.



PRECAUTIONARY/PREPAREDNESS ACTIONS...



Prepare for wind gusts in excess of 34 knots, steep and fast-building

seas, frequent lightning, and blinding downpours. Stay low or go

below, and make sure all on board are wearing life jackets.



&&



LAT...LON 2419 8226 2437 8222 2434 8184 2407 8190

TIME...MOT...LOC 1302Z 282DEG 21KT 2427 8217 



HAIL...0.00IN

WIND...>34KTS



$$



AJP






742 

FZUS72 KKEY 031329

MWSKEY



Marine Weather Statement

National Weather Service Key West FL

929 AM EDT Wed Sep 3 2025



GMZ054-074-031339-

/O.EXP.KKEY.MA.W.0270.000000T0000Z-250903T1330Z/

929 AM EDT Wed Sep 3 2025



...THE SPECIAL MARINE WARNING WILL EXPIRE AT 930 AM EDT...



The affected areas were... 

Straits of Florida from west end of Seven Mile Bridge to Halfmoon

Shoal out 60 nm...



The thunderstorm has weakened and no longer poses a significant

threat to boaters.



&&



LAT...LON 2419 8226 2437 8222 2434 8184 2407 8190

TIME...MOT...LOC 1329Z 282DEG 21KT 2424 8201 



$$



AJP