NOTE: Some of the data on this page has not been verified and should be used with that in mind. It may and occasionally will, be wrong. The tide reports are by xtide and are NOT FOR NAVIGATION. Privacy and Cookie policy

GMZ032 Bayside And Gulf Side From Craig Key To West End Of Seven Mile Bridge- Gulf Of Mexico From West End Of Seven Mile Bridge To Halfmoon Shoal Out To 5 Fathoms- 1038 Pm Est Sun Dec 3 2023
Overnight..Variable winds near 5 knots. Seas 1 foot or less. NEarshore waters smooth. Patchy fog across the cooler shelf waters adjacent to florida.
Monday..South to southwest winds near 5 knots, becoming northwest and increasing to 5 to 10 knots late. Seas 1 foot or less. NEarshore waters smooth, becoming smooth to a light chop. Isolated showers.
Monday night..Northwest to north winds 5 to 10 knots, becoming north to northeast and increasing to 10 to 15 knots. Seas around 1 foot, building to 1 to 2 feet. NEarshore waters smooth to a light chop, becoming a light to moderate chop. Isolated showers.
Tuesday..North to northeast winds 10 to 15 knots, becoming north and decreasing to near 10 knots in the afternoon. Seas 1 to 2 feet. NEarshore waters a light to moderate chop, becoming a light chop.
Tuesday night..North winds 10 to 15 knots, increasing to 15 to 20 knots after midnight. Seas building to 2 to 4 feet. NEarshore waters a light to moderate chop, becoming choppy. Isolated showers.
Wednesday..Northwest to north winds 15 to 20 knots. Seas 2 to 4 feet, except around 4 feet west of the marquesas keys. NEarshore waters choppy. Isolated showers.
Wednesday night..North winds 15 to 20 knots, becoming north to northeast. Seas 2 to 4 feet, except 4 to 5 feet west of the marquesas keys. NEarshore waters choppy.
Thursday..Northeast winds 15 to 20 knots, becoming northeast to east. Seas 2 to 4 feet, except 4 to 5 feet west of the marquesas keys. NEarshore waters choppy.
Thursday night..East winds 15 to 20 knots. Seas 2 to 3 feet, except 3 to 4 feet west of the marquesas keys. NEarshore waters choppy.
Friday..East winds near 15 knots. Seas 2 to 3 feet, except 3 to 4 feet west of the marquesas keys. NEarshore waters a moderate chop. Isolated showers.
Friday night..East winds near 15 knots. Seas 1 to 3 feet, except around 3 feet west of the marquesas keys. NEarshore waters a moderate chop. Isolated showers.

GMZ005 Synopsis For Keys Coastal Waters From Ocean Reef To Dry Tortugas 1038 Pm Est Sun Dec 3 2023
Synopsis..A weak frontal system will move through the florida keys on Monday resulting in gentle to moderate northwest to north breezes veering to the north to northeast for Monday night and Tuesday. A second, much stronger cold front will push through the coastal waters late Tuesday or early Wednesday, with fresh northerly breezes expected in its wake. Strong high pressure will slide across the southeastern united states into the western north atlantic late week and result in moderate to fresh easterly breezes.
the approximate shoreward edge of the gulf stream as of december 02...
58 nm south of dry tortugas light...on loggerhead key. 28 nm south of cosgrove shoal light...off the marquesas keys. 21 nm south of sand key light...off key west. 20 nm south of looe key...off big pine key. 15 nm south of sombrero key light...off marathon. 9 nm southeast of alligator reef light...off islamorada. 5 nm southeast of molasses reef light...off key largo. 4 nm east of carysfort reef light...off ocean reef.
gulf stream information courtesy of the naval oceanographic office.

FXUS62 KKEY 040355 AFDKEY

Area Forecast Discussion National Weather Service Key West FL 1055 PM EST Sun Dec 3 2023

New DISCUSSION, MARINE, AVIATION

DISCUSSION
Issued at 1015 PM EST Sun Dec 3 2023 The mean layer ridge which ruled the weather across the Florida Keys the past few days is under assault from lower heights to the northwest. Water vapor imagery highlights a broad and lengthy jet streak across the southeastern US, with a potent short wave digging southeast through the Plains towards the jet. A cold front bisects the northern Gulf Coast. South Florida and the Keys are within a very weak SFC gradient, with light and variable winds.
Given the winds and juicy dewpoints the Mainland is fogging out.
RGB nighttime satellite imagery suggest some of these lower ceilings or even areas of sea fog are wafting southwest away from the Ten Thousand Islands. NASA SPoRT SST data suggest SSTs are about five degrees cooler adjacent to Mainland Monroe and Collier County, where VIS sensors and webcams observe fog. So, given the uncertainty of ground truth, we added patchy fog to a portion of the coastal waters adjacent to Florida, but do not think a marine Dense Fog Advisory is required. As was observed last night on Big Pine, shallow ground fog will be possible across the larger island due to the light winds and radiational cooling. Surfaces should be sopping wet by Daybreak.

MARINE
Issued at 1015 PM EST Sun Dec 3 2023 There are no watches, warnings, or advisories currently in effect for the coastal waters of the Florida Keys. Small Craft Advisories may be required Wednesday and Wednesday night for portions of the coastal waters of the Florida Keys. From synopsis, a weak frontal system will move through the Florida Keys on Monday resulting in gentle to moderate northwest to north breezes veering to the north to northeast for Monday night and Tuesday. A second, much stronger cold front will push through the coastal waters late Tuesday or early Wednesday, with fresh northerly breezes expected in its wake. Strong high pressure will slide across the Southeastern United States into the western North Atlantic late week and result in moderate to fresh easterly breezes.

AVIATION
(00Z TAFS)
Issued at 1015 PM EST Sun Dec 3 2023 Surface observations and RGB nighttime satellite imagery suggest the light winds and juicy dewpoints across the Mainland are aiding widespread fog development. The Ocean Reef ASOS registers BR at this hour, but both EYW and MTH remain P6SM. Nearshore waters are back in the upper 70s, so sea fog will be a challenge. However, shallow fog (MIFG) will be possible across the larger islands.
Given the strong signal from the NBM at MTH, we have included a few hours of MIFG.

PRELIMINARY POINT TEMPS/POPS
Key West 76 82 73 79 / 0 10 10 10 Marathon 76 84 73 80 / 0 10 10 10

KEY WATCHES/WARNINGS/ADVISORIES
FL...None.
GM...None.

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Gopher Key
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Sun -- 12:02 AM EST     1.68 feet High Tide
Sun -- 06:54 AM EST     Sunrise
Sun -- 08:29 AM EST     0.24 feet Low Tide
Sun -- 12:03 PM EST     Moonset
Sun -- 01:50 PM EST     1.04 feet High Tide
Sun -- 05:36 PM EST     Sunset
Sun -- 07:29 PM EST     0.60 feet Low Tide
Sun -- 11:21 PM EST     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION

Gopher Key, Cudjoe Bay, Florida, Tide feet

No Name Key (northeast of)
Click for Map
Sun -- 12:10 AM EST     0.28 knots Max Flood
Sun -- 02:40 AM EST     -0.00 knots Slack
Sun -- 05:45 AM EST     -0.78 knots Max Ebb
Sun -- 06:53 AM EST     Sunrise
Sun -- 09:38 AM EST     0.00 knots Slack
Sun -- 12:02 PM EST     Moonset
Sun -- 01:08 PM EST     0.48 knots Max Flood
Sun -- 03:55 PM EST     -0.00 knots Slack
Sun -- 05:35 PM EST     Sunset
Sun -- 06:27 PM EST     -0.60 knots Max Ebb
Sun -- 10:34 PM EST     0.00 knots Slack
Sun -- 11:21 PM EST     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION

No Name Key (northeast of), Florida Current, knots

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Key West, FL,