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GMZ043 Expires:202310040830;;457589 Fzus52 Kkey 040223 Cwfkey
coastal waters forecast for the florida keys national weather service key west fl 1023 pm edt Tue oct 3 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>044-040830- 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- 1023 pm edt Tue oct 3 2023
.small craft advisory in effect...
Overnight..Northeast winds near 20 knots, decreasing to 15 to 20 knots. Seas 2 to 4 feet. NEarshore waters rough, becoming choppy. Isolated showers.
Wednesday..Northeast to east winds near 15 knots. Seas 2 to 3 feet. NEarshore waters a moderate chop. Isolated showers.
Wednesday night..Northeast to east winds near 15 knots, decreasing to 10 to 15 knots. Seas 2 to 3 feet. NEarshore waters a moderate chop, becoming a light to moderate chop. Isolated showers.
Thursday..Northeast to east winds 10 to 15 knots, decreasing to near 10 knots. Seas 1 to 3 feet. NEarshore waters a light to moderate chop, becoming a light chop. Isolated showers.
Thursday night..Northeast to east winds near 10 knots. Seas 1 to 2 feet. NEarshore waters a light chop. Isolated showers.
Friday..Northeast winds 5 to 10 knots, becoming north. Seas around 1 foot. NEarshore waters smooth to a light chop. Isolated showers.
Friday night..North winds 5 to 10 knots. Seas 1 foot or less. NEarshore waters smooth to a light chop. Isolated showers.
Saturday..Northwest to north winds near 5 knots. Seas 1 foot or less. NEarshore waters smooth. Isolated showers.
Saturday night..Northwest winds 5 to 10 knots. Seas 1 foot or less. NEarshore waters smooth to a light chop. Isolated showers and Thunderstorms.
Sunday..Northwest to north winds 5 to 10 knots. Seas 1 foot or less, except building 2 to 3 feet west of cosgrove shoal light due to a northwest swell. NEarshore waters smooth to a light chop. Isolated showers and Thunderstorms.
Sunday night..Northwest to north winds 5 to 10 knots. Seas 1 to 2 feet, except 2 to 3 feet west of cosgrove shoal light due to a northwest swell. NEarshore waters smooth to a light chop. Isolated showers and Thunderstorms.

GMZ005 Synopsis For Keys Coastal Waters From Ocean Reef To Dry Tortugas 1023 Pm Edt Tue Oct 3 2023
Synopsis..An area of high pressure over the eastern united states will promote fresh to strong breezes across the florida keys coastal waters through the overnight. Breezes are expected to slowly diminish and become moderate to fresh sometime on Tuesday. Breezes will shift to the northwest later in the week as low pressure slides north through the western north atlantic.
the approximate shoreward edge of the gulf stream as of september 28...
29 nm south of dry tortugas light...on loggerhead key. 7 nm south of cosgrove shoal light...off the marquesas keys. 6 nm south of sand key light...off key west. 7 nm south of looe key...off big pine key. 7 nm south of sombrero key light...off marathon.
gulf stream information courtesy of the naval oceanographic office.

FXUS62 KKEY 040132 AFDKEY

Area Forecast Discussion National Weather Service Key West FL 925 PM EDT Tue Oct 3 2023

New DISCUSSION, MARINE, AVIATION

DISCUSSION
Issued at 925 PM EDT Tue Oct 3 2023 Did you notice the hazy skies today? Various observational platforms across the state including those across the Florida Keys have recorded smoke/haze, which originated from wildfires in Canada due to the passage of a cold front.

Tonight's sounding continues to dry out, as the precipitable water value was recorded at 1.28", which ranks near the 10th percentile for the date. The MIMIC-TPW2 product clearly shows a distinct transition between modified dry continental air in the Florida Keys and the surrounding waters. Shower activity over the island chain and the northwestern waters of the Florida Keys has been suppressed due to dry air. However, there are still rapidly moving showers that are impacting portions of the Hawk Channel and Straits of Florida. The presence of the frontal boundary near Cuba and the wind convergence have resulted in continuous light showers. Furthermore, in the remote Straits of Florida, low-level convergence has increased, as well as 850 mb and 500 mb vorticity over the past few hours. This has contributed to the sustained shower activity in the area. The forecast for the island chain indicates mostly clear skies with a chance of a few light sprinkles. However, there is a possibility for scattered showers and isolated thunderstorms in the Hawk Channel and Straits of Florida. The forecast predicts that the overnight temperatures will be in the upper 70s. Clear skies will enhance radiational cooling, particularly in the low-lying regions of the Florida Keys.

MARINE
Issued at 925 PM EDT Tue Oct 3 2023 A Small Craft Advisory remains in effect for all Florida Keys coastal waters. Also, a Coastal Flood Advisory is in effect for all of the Florida Keys. Boaters can expect less clearance under fixed bridges, especially during the times of high tide. An area of high pressure over the eastern United States will promote fresh to strong breezes across the Florida Keys coastal waters through the overnight. Breezes are expected to slowly diminish and become moderate to fresh sometime on Tuesday. Breezes will shift to the northwest later in the week as low pressure slides north through the western North Atlantic.

AVIATION
(00Z TAFS)
Issued at 925 PM EDT Tue Oct 3 2023 VFR and gusty northeast breezes will prevail at the EYW and MTH terminals through the 04/22Z. A few light showers may pool over the island chain periodically tonight. Surface winds will be from the northeast to east at 15 to 20 knots, decreasing to near 15 knots by 04/15Z.

KEY WATCHES/WARNINGS/ADVISORIES
FL...Coastal Flood Advisory until 4 AM EDT Wednesday for FLZ076>078.

GM...Small Craft Advisory until 11 PM EDT this evening for GMZ031>035- 042>044-052>055-072>075.

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Conch Key
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Tue -- 06:33 AM EDT     0.07 feet Low Tide
Tue -- 07:16 AM EDT     Sunrise
Tue -- 11:36 AM EDT     Moonset
Tue -- 12:47 PM EDT     1.32 feet High Tide
Tue -- 05:47 PM EDT     0.48 feet Low Tide
Tue -- 07:08 PM EDT     Sunset
Tue -- 10:20 PM EDT     Moonrise
Tue -- 11:56 PM EDT     2.02 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION

Conch Key, eastern end, Florida, Tide feet

Long Key Viaduct
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Tue -- 02:29 AM EDT     -0.00 knots Slack
Tue -- 06:07 AM EDT     -1.48 knots Max Ebb
Tue -- 07:16 AM EDT     Sunrise
Tue -- 09:35 AM EDT     0.00 knots Slack
Tue -- 11:36 AM EDT     Moonset
Tue -- 12:19 PM EDT     1.12 knots Max Flood
Tue -- 03:55 PM EDT     -0.00 knots Slack
Tue -- 06:54 PM EDT     -0.99 knots Max Ebb
Tue -- 07:08 PM EDT     Sunset
Tue -- 10:07 PM EDT     0.00 knots Slack
Tue -- 10:20 PM EDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION

Long Key Viaduct, Florida Current, knots

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