GMZ005-130330-
Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas
1018 AM EST Thu Feb 12 2026
.SYNOPSIS...A nebulous pressure pattern across the Florida Keys
coastal waters will support light and at times variables winds
through Friday night. High pressure diving off the Mid-Atlantic
coastline will interact with a developing area of low pressure
near the ARK- LA- TEX region by Saturday and Saturday night,
supporting freshening east to southeast breezes. The low pressure
system will drive a frontal boundary through the Keys marine zones
Sunday night into Monday, with gentle winds clocking around to the
northwest in its wake for early next week.
The Approximate Shoreward Edge of the Gulf Stream as of February
11...
15 NM South of Dry Tortugas Light...on Loggerhead Key.
9 NM South of Cosgrove Shoal Light...off the Marquesas Keys.
10 NM South of Sand Key Light...off Key West.
17 NM South of Looe Key...off Big Pine Key.
20 NM Southeast of Sombrero Key Light...off Marathon.
18 NM Southeast of Alligator Reef Light...off Islamorada.
8 NM Southeast of Molasses Reef Light...off Key Largo.
4 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.
$$
GMZ032-035-130330- Bayside and Gulfside from Craig Key to west end of Seven Mile Bridge- Gulf of America from west end of Seven Mile Bridge to Halfmoon Shoal out to 5 Fathoms- 1018 AM EST Thu Feb 12 2026 THIS AFTERNOON Variable winds near 5 knots, becoming west to northwest. Seas 1 foot or less. Nearshore waters smooth. TONIGHT West to northwest winds near 5 knots, becoming northwest to north. Seas 1 foot or less. Nearshore waters smooth. FRIDAY Northwest near 5 knots. Seas 1 foot or less. Nearshore waters smooth. FRIDAY NIGHT Northwest winds 5 to 10 knots, becoming north to northeast. Seas around 1 foot. Nearshore waters smooth to a light chop. SATURDAY Northeast to east winds 5 to 10 knots, becoming east to southeast and increasing to near 10 knots. Seas around 1 foot. Nearshore waters smooth to a light chop, becoming a light chop. SATURDAY NIGHT East to southeast winds near 10 knots, becoming southeast and increasing to near 15 knots. Seas around 1 foot, building to 1 to 2 feet. West of the Marquesas Keys, seas 1 to 2 feet, building to 2 to 3 feet. Nearshore waters a light chop, becoming a moderate chop. Isolated showers. SUNDAY Southeast winds near 15 knots, decreasing to 10 to 15 knots. Seas 1 to 2 feet, except 2 to 3 feet west of the Marquesas Keys. Nearshore waters a moderate chop, becoming a light to moderate chop. Isolated showers. SUNDAY NIGHT Southeast to south winds 10 to 15 knots, becoming south to southwest. Seas 1 to 2 feet, except around 2 feet west of the Marquesas Keys. Nearshore waters a light to moderate chop. Scattered showers. MONDAY Southwest winds 10 to 15 knots, becoming west. Seas 1 to 2 feet, except 2 to 3 feet west of the Marquesas Keys. Nearshore waters a light to moderate chop. Scattered showers. MONDAY NIGHT West to northwest winds near 10 knots, becoming northwest to north. Seas 1 to 2 feet, except 2 to 4 feet, occasionally to 5 feet west of the Marquesas Keys. Nearshore waters a light chop. Isolated showers. $$
GMZ032-035-130330- 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- 1018 AM EST Thu Feb 12 2026 THIS AFTERNOON Variable winds near 5 knots, becoming west to northwest. Seas 1 foot or less. Nearshore waters smooth. TONIGHT West to northwest winds near 5 knots, becoming northwest to north. Seas 1 foot or less. Nearshore waters smooth. FRIDAY Northwest near 5 knots. Seas 1 foot or less. Nearshore waters smooth. FRIDAY NIGHT Northwest winds 5 to 10 knots, becoming north to northeast. Seas around 1 foot. Nearshore waters smooth to a light chop. SATURDAY Northeast to east winds 5 to 10 knots, becoming east to southeast and increasing to near 10 knots. Seas around 1 foot. Nearshore waters smooth to a light chop, becoming a light chop. SATURDAY NIGHT East to southeast winds near 10 knots, becoming southeast and increasing to near 15 knots. Seas around 1 foot, building to 1 to 2 feet. West of the Marquesas Keys, seas 1 to 2 feet, building to 2 to 3 feet. Nearshore waters a light chop, becoming a moderate chop. Isolated showers. SUNDAY Southeast winds near 15 knots, decreasing to 10 to 15 knots. Seas 1 to 2 feet, except 2 to 3 feet west of the Marquesas Keys. Nearshore waters a moderate chop, becoming a light to moderate chop. Isolated showers. SUNDAY NIGHT Southeast to south winds 10 to 15 knots, becoming south to southwest. Seas 1 to 2 feet, except around 2 feet west of the Marquesas Keys. Nearshore waters a light to moderate chop. Scattered showers. MONDAY Southwest winds 10 to 15 knots, becoming west. Seas 1 to 2 feet, except 2 to 3 feet west of the Marquesas Keys. Nearshore waters a light to moderate chop. Scattered showers. MONDAY NIGHT West to northwest winds near 10 knots, becoming northwest to north. Seas 1 to 2 feet, except 2 to 4 feet, occasionally to 5 feet west of the Marquesas Keys. Nearshore waters a light chop. Isolated showers. $$