Marine Weather and Tide Forecast for Layton, FL

FXUS62 KKEY 071527 AFDKEY

Area Forecast Discussion National Weather Service Key West FL 1027 AM EST Sat Dec 7 2024

New DISCUSSION, MARINE, AVIATION

DISCUSSION
Issued at 1027 AM EST Sat Dec 7 2024 It is a GORGEOUS Saturday morning across the Florida Keys.
KBYX radar shows an interesting broken line of showers extending from northeast to southwest across the distant eastern Straits of Florida. GOES 16 Visible satellite imagery also shows a sharp delineation line to the clouds with much of the Island Chain remaining under clear sky. Most of the aforementioned clouds line up nicely with where the warmer water of the Gulf Stream is present. Temperatures along the Island Chain are in the mid to upper 60s with dew points comfortable near 60 degrees. Surface high pressure remains across the Southeast U.S. while slowly moving to the east. This is promoting north to northeast breezes of near 15 knots at marine platforms north of the Chain with 15 to 20 knots at marine platforms south of the Chain. Island Chain communities are observing north to northeast breezes of 10 to 15 mph.

SHORT TERM FORECAST
The 12z morning sounding shows a sharp inversion around 990 mb with another inversion around 850 mb. There is plenty of dry air present between 990 mb to 850 mb with vast dry air above 850 mb.
The PWAT value measured came in at 0.86 inches which is between the 10th to 25th percentile for the date. Winds are northeast closest to the surface with backing winds to north to northeast around 3000 ft AGL. Based on the dry air, lack of instability, and no veering to the wind profile, no changes expected to the ongoing forecast. With the warmer water of the Gulf Stream and cooler air moving across it, this is helping to generate the showers which is expected to be ongoing through the afternoon.
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