Marine Weather Net

E Gulf from 22N to 25N E of 87W including Straits of Florida Offshore Forecast


OVERNIGHT

NNE
WINDS
15 - 20
KNOTS

SAT

N
WINDS
15 - 20
KNOTS

SAT NIGHT

N
WINDS
15 - 20
KNOTS

SUN

NNE
WINDS
10 - 15
KNOTS

The Marine Weather Forecast In Detail:
GMZ047 Forecast Issued: 1034 PM EDT Fri Oct 10 2025

Overnight...N To Ne Winds 15 To 20 Kt Late. Seas 7 To 10 Ft In N Swell.
Sat...N Winds 15 To 20 Kt. Seas 6 To 9 Ft In N Swell.
Sat Night...N Winds 15 To 20 Kt. Seas 6 To 9 Ft In N Swell. Scattered Showers And Isolated Tstms.
Sun...N To Ne Winds 10 To 15 Kt. Seas 6 To 8 Ft In N Swell.
Sun Night...Ne Winds 10 To 15 Kt. Seas 3 To 5 Ft.
Mon...Ne Winds 10 To 15 Kt. Seas 2 To 4 Ft.
Mon Night...Ne Winds 15 To 20 Kt. Seas 3 To 5 Ft.
Tue...Ne Winds 15 To 20 Kt. Seas 3 To 5 Ft.
Tue Night...Ne To E Winds 15 To 20 Kt. Seas 4 To 6 Ft.
Wed...Ne To E Winds 15 To 20 Kt. Seas 4 To 6 Ft.
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Area Forecast Discussion
National Weather Service Key West FL
1033pm EDT Fri Oct 10 2025

Issued at 1032pm EDT Fri Oct 10 2025 KBYX radar looks much quieter this evening compared to earlier today, with only a few scattered showers remaining over the deep Gulf waters and distant Straits. Earlier a surge of deep tropical moisture that MIMIC estimated to be around 2.4 inches of precipitable water, and strong surface convergence along a weak trough led to widespread thunderstorms across the Keys. Marathon broke its previous daily record of 1.44 inches set in 1994, recording 5.08 inches as of 4pm. Although activity has diminished moving into the evening, guidance suggests that lingering instability and moisture could support another round of convection overnight, therefore the 70% Probability of Precipitation for the overnight period will remain in place. Outside of any convection, winds are expected to freshen overnight from gentle to moderate as the pressure gradient tightens ahead of a weak approaching front.

Marine
Issued at 1032pm EDT Fri Oct 10 2025 No watches, warnings, or advisories are currently in effect for the Florida Keys waters. From synopsis, low- and mid-level trough located over western Cuba will continue to slowly drift northeastward tonight. This will support bouts of elevated rain and thunder chances. The system will develop into an area of low pressure off the coast of Florida, with southeasterly light to gentle breezes gradually backing to the northwest to north over the weekend. The low pressure system will continue organizing and strengthening as it heads northeastward adjacent to the Mid- Atlantic coast. As it does this, it will drive an early season cold front towards the Keys, further shifting winds to the north to northeast. Northerly swells will be possible in our western marine zones today and through the weekend due to the influence of the low pressure system.

NOAA Key West FL Office: Watches - Warnings - Advisories
FL...Coastal Flood Advisory until 6am EDT Saturday for FLZ076>078.

GM...None.