Sat May 18 05:03:07 EDT 2024 Monroe Upper Keys-Monroe Middle Keys-Monroe Lower Keys- Florida Bay including Barnes Sound, Blackwater Sound, and Buttonwood Sound- Bayside and Gulf side from Craig Key to west end of Seven Mile Bridge- Gulf waters from East Cape Sable to Chokoloskee 20 to 60 NM out and beyond 5 fathoms- Gulf of Mexico including Dry Tortugas and Rebecca Shoal Channel- Gulf of Mexico from west end of Seven Mile Bridge to Halfmoon Shoal out to 5 Fathoms- Hawk Channel from Ocean Reef to Craig Key out to the reef- 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 Ocean Reef to Craig Key out 20 NM- 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- Straits of Florida from Ocean Reef to Craig Key 20 to 60 NM out- Straits of Florida from Craig Key to west end of Seven Mile Bridge 20 to 60 NM out- Straits of Florida from west end of Seven Mile Bridge to south of Halfmoon Shoal 20 to 60 NM out- Straits of Florida from Halfmoon Shoal to 20 NM west of Dry Tortugas 20 to 60 NM out- 502 AM EDT Sat May 18 2024 This Hazardous Weather Outlook is for the Florida Keys and adjacent coastal waters. .DAY ONE...Today and tonight. A combination of daytime highs in the lower 90s coupled with dew points in the upper 70s will result in heat index values up to 110 today. As a result, a Heat Advisory will be in effect from 10 AM this morning to 6 PM this evening. .DAYS TWO THROUGH SEVEN...Sunday through Friday. Isolated thunderstorms will be possible Sunday through Thursday. The primary hazards will be lightning strikes and locally gusty winds. In addition, a combination of daytime highs in the lower 90s coupled with dew points in the mid to upper 70s may result in heat index values exceeding 108. Should confidence increase that these values will exceed 108, a Heat Advisory may be required Sunday. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time.