Hazardous marine condition(s):
Small Craft Advisory
GMZ005-111545-
Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas
1040 PM EST Mon Nov 10 2025
.SYNOPSIS...Fresh to strong northerly breezes will peak overnight
in the wake of a cold front that pushed across the Florida Keys
marine zones earlier today. Winds will shift out of the northeast
and gradually slacken through the week while an area of high
pressure builds in behind the front. Moderate to occasionally
fresh breezes will remain possible through the end of the work
week.
The Approximate Shoreward Edge of the Gulf Stream as of November
4...
42 NM South of Dry Tortugas Light...on Loggerhead Key.
42 NM South of Cosgrove Shoal Light...off the Marquesas Keys.
30 NM South of Sand Key Light...off Key West.
29 NM South of Looe Key...off Big Pine Key.
27 NM Southeast of Sombrero Key Light...off Marathon.
14 NM Southeast of Alligator Reef Light...off Islamorada.
4 NM Southeast of Molasses Reef Light...off Key Largo.
3 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.
$$
GMZ031-111545- Florida Bay including Barnes Sound, Blackwater Sound, and Buttonwood Sound- 1040 PM EST Mon Nov 10 2025 SMALL CRAFT ADVISORY IN EFFECT OVERNIGHT Northwest to north winds near 25 knots, increasing to 25 to 30 knots. Bay waters extremely rough. TUESDAY North to northeast winds near 25 knots, decreasing to 20 to 25 knots. Bay waters extremely rough, becoming very rough. TUESDAY NIGHT Northeast winds 20 to 25 knots, decreasing to 15 to 20 knots. Bay waters very rough, becoming choppy. WEDNESDAY Northeast winds near 15 knots. Bay waters a moderate chop. WEDNESDAY NIGHT Northeast winds 10 to 15 knots. Bay waters a light to moderate chop. THURSDAY Northeast winds near 15 knots. Bay waters a moderate chop. THURSDAY NIGHT AND FRIDAY Northeast winds near 15 knots. Bay waters a moderate chop. FRIDAY NIGHT Northeast to east winds 10 to 15 knots. Bay waters a light to moderate chop. SATURDAY AND SATURDAY NIGHT East winds 10 to 15 knots. Bay waters a light to moderate chop. $$
GMZ031-111545- Florida Bay including Barnes Sound, Blackwater Sound, and Buttonwood Sound- 1040 PM EST Mon Nov 10 2025 SMALL CRAFT ADVISORY IN EFFECT OVERNIGHT Northwest to north winds near 25 knots, increasing to 25 to 30 knots. Bay waters extremely rough. TUESDAY North to northeast winds near 25 knots, decreasing to 20 to 25 knots. Bay waters extremely rough, becoming very rough. TUESDAY NIGHT Northeast winds 20 to 25 knots, decreasing to 15 to 20 knots. Bay waters very rough, becoming choppy. WEDNESDAY Northeast winds near 15 knots. Bay waters a moderate chop. WEDNESDAY NIGHT Northeast winds 10 to 15 knots. Bay waters a light to moderate chop. THURSDAY Northeast winds near 15 knots. Bay waters a moderate chop. THURSDAY NIGHT AND FRIDAY Northeast winds near 15 knots. Bay waters a moderate chop. FRIDAY NIGHT Northeast to east winds 10 to 15 knots. Bay waters a light to moderate chop. SATURDAY AND SATURDAY NIGHT East winds 10 to 15 knots. Bay waters a light to moderate chop. $$