Straits of Florida from Craig Key to West End of Seven Mile Bridge Out 20 NM Marine Forecast
|This Afternoon...East Winds 10 To 15 Knots. Seas 2 To 3 Feet. Isolated Showers And Thunderstorms.|
|Tonight...East Winds Near 15 Knots. Seas Building To 3 To 5 Feet. Isolated Showers And Thunderstorms.|
|Friday...East Winds 10 To 15 Knots. Seas 2 To 4 Feet. Isolated Showers And Thunderstorms.|
|Friday Night...East Winds 10 To 15 Knots. Seas 2 To 3 Feet. Scattered Showers And Isolated Thunderstorms.|
|Saturday...East Winds 10 To 15 Knots. Seas 2 To 3 Feet. Isolated Showers And Thunderstorms.|
|Saturday Night...East Winds 10 To 15 Knots. Seas 2 To 3 Feet. Isolated Showers And Thunderstorms.|
|Sunday...East Winds 5 To 10 Knots. Seas 1 To 3 Feet. Isolated Showers And Thunderstorms.|
|Sunday Night...East Winds 5 To 10 Knots. Seas 1 To 2 Feet. Scattered Showers And Isolated Thunderstorms.|
|Monday...Northeast To East Winds 5 To 10 Knots. Seas 1 To 2 Feet. Scattered Showers And Isolated Thunderstorms.|
|Monday Night...Northeast To East Winds Increasing To 10 To 15 Knots. Seas Building To 2 To 3 Feet. Scattered Showers And Isolated Thunderstorms.|
Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas: GMZ005|
1019 AM EDT Thu May 28 2020
A broad Atlantic ridge axis across the Keys and South Florida will lift northward to Central and North Florida this afternoon through Saturday. The ridge will decay as it retreats and sags into South Florida Sunday and Sunday night, resulting in light to gentle easterly breezes. Easterly breezes will freshen late Monday into early Tuesday as high pressure emerges off the North Carolina coast.
The Approximate Shoreward Edge of the Gulf Stream as of May 28...
- 1 NM South of Dry Tortugas Light...on Loggerhead Key.
- 23 NM South of Cosgrove Shoal Light...off the Marquesas Keys.
- 17 NM South of Sand Key Light...off Key West.
- 11 NM South of Looe Key...off Big Pine Key.
- 6 NM South of Sombrero Key Light...off Marathon.
- 5 NM Southeast of Alligator Reef Light...off Islamorada.
- 2 NM Southeast of Molasses Reef Light...off Key Largo.
- 1 NM East of Carysfort Reef Light...off Ocean Reef.
Area Forecast Discussion|
National Weather Service Key West FL
958am EDT Thu May 28 2020
Fair weather prevails over the Keys and coastal waters this morning, albeit fairly warm and humid. Dewpoint temperatures are in the upper 70s, and low temps across the island this morning in the the low 80s. Definitely summer has begun. The mornings sounding at Key West was unremarkable. Precipitable water was a bit above climatology, but there is a good deal of convective inhibition, as well as lower tropospheric dry air which should serve to limit shower activity through the day. However, there is sufficient MLCAPE to produce thunderstorms from the few showers that do develop.
With the lower tropospheric Atlantic ridge axis cutting across south Florida and the Keys, flow will remain relatively light throughout the boundary layer, with surface flow out of the southeast. While this may favor cloud streamers mainly off the larger islands of the lower Keys, conditions are not very favorable for waterspout formation. Overall, looks to be a relatively benign sunny day, with the possibility of isolated showers and thunderstorms mainly in the Florida Straits.
Winds will generally be out of the east to east southeast near 10 knots, with winds a few knots higher in the straits. There is a chance of isolated showers, and possibly a thunderstorm or two, mainly outside of the reef.
NOAA Key West FL Office: Watches - Warnings - Advisories