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GMZ043 Expires:202312042130;;892040 Fzus52 Kkey 041526 Cwfkey
coastal waters forecast for the florida keys national weather service key west fl 1026 am est Mon dec 4 2023
florida bay, hawk channel and straits of florida from ocean reef to south of dry tortugas, and the extreme southeastern gulf of mexico, including the florida keys national marine sanctuary
seas are given as significant wave height, which is the average height of the highest 1/3 of the waves. Individual waves may be more than twice the significant wave height.
gmz042>044-042130- hawk channel from ocean reef to craig key out to the reef- hawk channel from craig key to west end of seven mile bridge out to the reef- hawk channel from west end of seven mile bridge to halfmoon shoal out to the reef- 1026 am est Mon dec 4 2023
This afternoon..Variable winds near 5 knots, becoming west to northwest and increasing to 5 to 10 knots. Seas around 1 foot. NEarshore waters smooth, becoming smooth to a light chop. Isolated showers.
Tonight..Northwest to north winds near 10 knots, becoming north to northeast and increasing to 10 to 15 knots. Seas around 1 foot, except building to 1 to 2 feet west of cosgrove shoal light. NEarshore waters a light chop, becoming a light to moderate chop. Isolated showers.
Tuesday..North to northeast winds 10 to 15 knots. Seas around 1 foot, except 2 to 3 feet west of cosgrove shoal light. NEarshore waters a light to moderate chop. Isolated showers.
Tuesday night..North winds 10 to 15 knots. Seas 1 to 2 feet, except 2 to 3 feet west of cosgrove shoal light. NEarshore waters a light to moderate chop. Isolated showers.
Wednesday..North to northwest winds increasing to 15 to 20 knots. Seas 1 to 2 feet, except building to 3 to 4 feet west of cosgrove shoal light. NEarshore waters becoming choppy. Isolated showers.
Wednesday night..North to northeast winds near 20 knots. Seas 2 to 3 feet, except 4 to 5 feet west of cosgrove shoal light. NEarshore waters rough.
Thursday..Northeast to east winds 15 to 20 knots. Seas 2 to 3 feet, except 4 to 5 feet west of cosgrove shoal light. NEarshore waters choppy.
Thursday night..East winds 15 to 20 knots. Seas 2 to 4 feet, except 4 to 5 feet west of cosgrove shoal light. NEarshore waters choppy.
Friday and Friday night..East winds 15 to 20 knots. Seas 3 to 4 feet. NEarshore waters choppy. Isolated showers.

GMZ005 Synopsis For Keys Coastal Waters From Ocean Reef To Dry Tortugas 1026 Am Est Mon Dec 4 2023
Synopsis..A weak frontal system will move through the florida keys this afternoon resulting in gentle to moderate northwest to north breezes veering to the north to northeast night and continuing into 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 041457 AFDKEY

Area Forecast Discussion National Weather Service Key West FL 957 AM EST Mon Dec 4 2023

New DISCUSSION, MARINE, AVIATION

DISCUSSION
Issued at 952 AM EST Mon Dec 4 2023 After some early morning patchy fog, the fog has mixed out for the Keys with any residual areas of fog remaining over the Southwest Florida mainland. A weak frontal boundary is draped from northeast to southwest across the Florida Peninsula extending from near the Space Coast to the Tampa area and then out into the central Gulf of Mexico. Temperatures across the Island Chain are in the mid to upper 70s with dew points in the mid to upper 70s.
This also resulted in plenty of dew this morning across the Keys as the air is saturated. Winds remain light and variable across the Keys and marine platforms as the high pressure driving our winds the last few days has left the Keys in weak synoptic scale flow (col region).

The 12z RAOB this morning is dry through much of the atmosphere with only the surface having the most moisture resulting in the dew formation and patchy fog earlier. Therefore, not expecting any changes to the ongoing forecast, though, will keep an eye out for any potential cloud line that may try to form later today with weak west to southwest flow. There are high clouds streaming overhead that may inhibit this but will keep an eye on it.

MARINE
Issued at 952 AM EST Mon Dec 4 2023 There are currently no watches, warnings, or advisories in effect across the Florida Keys coastal waters. From synopsis, a weak frontal system will move through the Florida Keys this afternoon resulting in gentle to moderate northwest to north breezes veering to the north to northeast night and continuing into 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
(15Z TAFS)
Issued at 952 AM EST Mon Dec 4 2023 While VFR conditions will prevail at the terminals for most of the TAF period, brief bouts of sub-VFR CIGS are possible as a weak frontal boundary pushes through the island chain early this afternoon. Light and variable surface winds will back to the northwest to north and freshen in the wake of the front.

CLIMATE
On this day in 1876, both the daily record cold high temperature of 57F and the daily record low temperature of 46F were recorded in Key West. Temperature records date back to 1872.

PRELIMINARY POINT TEMPS/POPS
Key West 82 73 79 68 / 10 10 10 10 Marathon 84 73 80 66 / 10 10 10 10

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

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Mon -- 12:42 AM EST     1.91 feet High Tide
Mon -- 06:53 AM EST     Sunrise
Mon -- 08:29 AM EST     0.46 feet Low Tide
Mon -- 12:34 PM EST     Moonset
Mon -- 02:13 PM EST     1.34 feet High Tide
Mon -- 05:35 PM EST     Sunset
Mon -- 08:15 PM EST     0.95 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION

Boot Key Harbor, Vaca Key, Florida, Tide feet

Moser Channel (swingbridge)
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Mon -- 01:03 AM EST     0.60 knots Max Flood
Mon -- 04:04 AM EST     -0.00 knots Slack
Mon -- 06:53 AM EST     Sunrise
Mon -- 07:35 AM EST     -1.30 knots Max Ebb
Mon -- 11:12 AM EST     0.00 knots Slack
Mon -- 12:34 PM EST     Moonset
Mon -- 01:47 PM EST     0.86 knots Max Flood
Mon -- 05:16 PM EST     -0.00 knots Slack
Mon -- 05:35 PM EST     Sunset
Mon -- 08:27 PM EST     -1.16 knots Max Ebb
Mon -- 11:58 PM EST     0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION

Moser Channel (swingbridge), Florida Current, knots

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