GMZ005-010845-
Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas
436 PM EDT Thu Apr 30 2026
.SYNOPSIS...High pressure will continue to retreat into the
Atlantic tonight, as a weak low pushes off the Eastern Seaboard.
This will result in light southeasterlies becoming variable.
Another weak low will push across Florida late this week and into
the weekend, likely supporting a short period of gentle to
moderate southeasterly breezes. Winds should slacken again later
in the weekend as the pressure gradient flattens. A weak
disturbance in the Gulf coupled with increased moisture will
support elevated rain and thunder chances for late in the weekend
and into early next week.
The Approximate Shoreward Edge of the Gulf Stream as of April 28...
16 NM South of Dry Tortugas Light...on Loggerhead Key.
10 NM South of Cosgrove Shoal Light...off the Marquesas Keys.
9 NM South of Sand Key Light...off Key West.
9 NM South of Looe Key...off Big Pine Key.
12 NM Southeast of Sombrero Key Light...off Marathon.
10 NM Southeast of Alligator Reef Light...off Islamorada.
6 NM Southeast of Molasses Reef Light...off Key Largo.
6 NM Southeast of Carysfort Reef Light...off Ocean Reef.
Gulf Stream Information Courtesy of the National Weather Service in
Key West based on products from NASA SPoRT and RTOFS.
$$
GMZ032-035-010845-
Bayside and Gulfside from Craig Key to west end of Seven Mile
Bridge-
Gulf of America from west end of Seven Mile Bridge to Halfmoon
Shoal out to 5 Fathoms-
436 PM EDT Thu Apr 30 2026
TONIGHT
Variable winds near 5 knots. Seas 1 foot or less.
Nearshore waters smooth.
FRIDAY
Variable winds 5 to 10 knots. Seas 1 foot or less.
Nearshore waters smooth to a light chop.
FRIDAY NIGHT
Variable winds 5 to 10 knots, becoming southeast
to south 10 to 15 knots. Seas around 1 foot, except building to 1
to 2 feet west of the Marquesas Keys. Nearshore waters smooth to
a light chop, becoming a light to moderate chop.
SATURDAY
South winds 10 to 15 knots, becoming southwest near 10
knots. Seas 1 to 2 feet, subsiding to around 1 foot. Nearshore
waters a light to moderate chop, becoming a light chop. A slight
chance of showers.
SATURDAY NIGHT
Southwest winds 5 to 10 knots. Seas around 1
foot. Nearshore waters smooth to a light chop. A chance of
showers with a slight chance of thunderstorms.
SUNDAY
Southwest to west winds 5 to 10 knots, becoming
northwest near 10 knots. Seas around 1 foot, building to 1 to 2
feet. Nearshore waters smooth to a light chop, becoming a light
chop. A chance of showers and thunderstorms.
SUNDAY NIGHT
Northeast winds 10 to 15 knots. Seas 1 to 2 feet,
except 2 to 3 feet west of the Marquesas Keys. Nearshore waters a
light to moderate chop. A chance of showers and thunderstorms.
MONDAY
Northeast winds near 10 knots. Seas 1 to 2 feet.
Nearshore waters a light chop. A chance of showers with a slight
chance of thunderstorms.
MONDAY NIGHT
North to northeast winds near 10 knots, becoming
northeast to east. Seas around 1 foot. Nearshore waters a light
chop. A slight chance of showers and thunderstorms.
TUESDAY AND TUESDAY NIGHT
East to southeast winds 5 to 10
knots. Seas around 1 foot. Nearshore waters smooth to a light
chop. A slight chance of showers.
$$
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