FPUS72 KKEY 200057

NOWKEY



Short Term Forecast

National Weather Service Key West FL

857 PM EDT Tue Aug 19 2025



FLZ077-078-GMZ031>035-043-044-053>055-200200-

Monroe Middle Keys-Monroe Lower Keys-

Florida Bay including Barnes Sound, Blackwater Sound, and Buttonwood

Sound-

Bayside and Gulfside from Craig Key to west end of Seven Mile Bridge-

Gulf of America from East Cape Sable to Chokoloskee 20 to 60 NM out

and beyond 5 fathoms-

Gulf of America including Dry Tortugas and Rebecca Shoal Channel-

Gulf of America from west end of Seven Mile Bridge to Halfmoon Shoal

out to 5 Fathoms-

Hawk Channel from Craig Key to west end of Seven Mile Bridge out to

the reef-

Hawk Channel from west end of Seven Mile Bridge to Halfmoon Shoal

out to the reef-

Straits of Florida from Craig Key to west end of Seven Mile Bridge

out 20 NM-

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

Halfmoon Shoal out 20 NM-

Straits of Florida from Halfmoon Shoal to 20 NM west of Dry Tortugas

out 20 NM-

Including the Communities of Marathon and Key West

857 PM EDT Tue Aug 19 2025



.NOW...

Through 10 PM, an outflow boundary extends from L Tower to Cosgrove 

Shoal Light and is moving at 15 to 20 knots to southwest and west. 

Mariners encountering this boundary can expect sudden wind gusts of 

25 to 30 knots from the northeast. Behind this boundary winds have

been slow to dissipate and as of 9 PM, sustained winds are near 20

knots with occasional gusts of 25 to 30 knots are occurring across 

the nearshore waters surrounding the Lower and Middle Keys.



$$



GMZ052-072-200200-

Straits of Florida from Ocean Reef to Craig Key out 20 NM-

Straits of Florida from Ocean Reef to Craig Key 20 to 60 NM out-

857 PM EDT Tue Aug 19 2025



.NOW...

Through 10 PM, a cluster of showers with embedded scattered 

thunderstorms are developing and moving across the far eastern 

Straits of Florida waters near and to the east of Floyd's Wall. This 

activity is moving southeast at near 10 knots and will be capable of 

blinding downpours, brief bouts of lightning, and wind gusts to near 

25 knots.



$$