Sunrise 6:37 AM   Sunset 8:19 PM Moonrise 4:22 PM   Moonset 2:41 AM

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GMZ035 Expires:202406182030;;236469 Fzus52 Kkey 181419 Cwfkey
coastal waters forecast for the florida keys national weather service key west fl 1019 am edt Tue jun 18 2024
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.
wave detail will include details about the period and direction of origin for the highest energy waves. Long-period swells coming from a different direction than the wind would be included in the wave detail.
gmz032-035-182030- 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- 1019 am edt Tue jun 18 2024
.small craft advisory in effect - .
This afternoon - East winds near 20 knots. Seas 2 to 3 feet, except 4 to 6 feet, occasionally to 8 feet west of the marquesas keys. NEarshore waters rough. Scattered showers and isolated Thunderstorms. Tonight and Wednesday - East winds near 20 knots. Seas 2 to 3 feet, except 4 to 5 feet, occasionally to 6 feet west of the marquesas keys. NEarshore waters rough. Scattered showers and isolated Thunderstorms. Wednesday night - East winds near 20 knots, decreasing to 15 to 20 knots. Seas 2 to 3 feet, except 4 to 5 feet, occasionally to 6 feet west of the marquesas keys. NEarshore waters rough, becoming choppy. Scattered showers and isolated Thunderstorms. Thursday - East winds 15 to 20 knots. Seas 2 to 3 feet, except 3 to 4 feet, occasionally to 5 feet west of the marquesas keys. NEarshore waters choppy. Scattered showers and isolated Thunderstorms. Thursday night - East winds 15 to 20 knots, decreasing to near 15 knots. Seas 2 to 3 feet, except 3 to 4 feet, occasionally to 5 feet west of the marquesas keys. NEarshore waters choppy, becoming a moderate chop. Scattered showers and isolated Thunderstorms. Friday - East winds increasing to 15 to 20 knots. Seas 1 to 2 feet, except 3 to 4 feet, occasionally to 5 feet west of the marquesas keys. NEarshore waters becoming choppy. Scattered showers and isolated Thunderstorms. Friday night - East to southeast winds 15 to 20 knots. Seas 1 to 2 feet, except 3 to 4 feet, occasionally to 5 feet west of the marquesas keys. NEarshore waters choppy. Scattered showers and isolated Thunderstorms. Saturday and Saturday night - East to southeast winds near 15 knots. Seas 1 to 2 feet, except 2 to 3 feet west of the marquesas keys. NEarshore waters a moderate chop. Scattered showers and isolated Thunderstorms.

GMZ005 Synopsis For Keys Coastal Waters From Ocean Reef To Dry Tortugas 1019 Am Edt Tue Jun 18 2024
Synopsis - Strong surface high pressure centered off the new england coast working in tandem with falling pressures over the yucatan peninsula and the bay of campeche is expected to result in moderate to fresh breezes today through mid week. An area of low pressure may develop mid week a few hundred miles north of the central bahamas towards mid week and move towards the north to central florida coastline. This may result in a slackening of breezes.
the approximate shoreward edge of the gulf stream as of june 12 - .
66 nm south of dry tortugas light - .on loggerhead key. 24 nm south of cosgrove shoal light - .off the marquesas keys. 17 nm south of sand key light - .off key west. 28 nm south of looe key - .off big pine key. 8 nm south of sombrero key light - .off marathon. 4 nm south of alligator reef light - .off islamorada. 2 nm south of molasses reef light - .off key largo.
gulf stream information courtesy of the national weather service in key west.

FXUS62 KKEY 181439 AFDKEY

Area Forecast Discussion National Weather Service Key West FL 1039 AM EDT Tue Jun 18 2024

New DISCUSSION, MARINE, AVIATION

DISCUSSION
Issued at 1039 AM EDT Tue Jun 18 2024

It has been a fairly typical June day, with showers developing within the easterly flow across the Florida Keys coastal waters. A few light showers moved across the island chain earlier this morning, but have since been relegated to the southwest of the Lower Keys. Measurable rainfall has been limited due to the shallower nature of the showers, as well as the fast movement of this activity. The 12Z sounding sampled decent moisture in the lower- levels, but drier air has infiltrated from around 750 mb and up with a very dry layer from 500-300 mb. This is what has likely inhibited thunder within any of the showers. The Florida Keys remain wedged in between an expansive high off the Northeast coast and a broad low (Central American Gyre) across the Yucatan.
The gradient has tightened over the past 24 hours between these two features and winds along the Reef are currently being measured between 18 and 24 knots, with gusts as high as 29 knots. Breezy conditions are expected to continue through the remainder of the day. No appreciable changes are expected to the atmospheric profile in terms of moisture or inhibition, and 30% rain chances look appropriate through this afternoon. No changes were made to the forecast.

MARINE
Issued at 1039 AM EDT Tue Jun 18 2024

A Small Craft Advisory is in effect for all Florida Keys coastal waters. From synopsis, Strong surface high pressure centered off the New England coast working in tandem with falling pressures over the Yucatan Peninsula and the Bay of Campeche is expected to result in moderate to fresh breezes today through mid to late week. An area of low pressure may develop mid week a few hundred miles north of the central Bahamas towards mid week and move towards the north to central Florida coastline. This may result in a slackening of breezes.

AVIATION
(12Z TAFS)
Issued at 1039 AM EDT Tue Jun 18 2024

VFR conditions are expected to prevail at both EYW and MTH today and into tonight. Scattered showers continue to stream across the Straits of Florida and towards the Lower Keys. VCSH will therefore persist at EYW with a lull in activity dropping MTH out for now.
Periodic MVFR CIGs and reduced VIS will be possible with passing showers, but any extended periods of deteriorated conditions will be addressed with TEMPOs. Near surface winds will continue to be out of the east to southeast at near 15 knots with gusts up to near 25 knots.

CLIMATE
In 1972, during the early morning hours, Tropical Storm Agnes passed northward through the Yucatan channel. The outer rainbands of Tropical Storm Agnes spawned at least three, to as many as six tornadoes in the Florida Keys, including a F2 tornado in Big Coppitt Key, a F2 tornado in Key West, and a F1 tornado in Conch Key. Total damage was estimated at just over $500,000 (1972 USD).
About 40 people were injured in Big Coppitt Key, making the Big Coppitt Key tornado the worst in the history of the Florida Keys in terms of total number of injuries.

PRELIMINARY POINT TEMPS/POPS
Key West 89 82 89 81 / 40 30 40 40 Marathon 89 82 89 81 / 30 30 40 40

KEY WATCHES/WARNINGS/ADVISORIES
FL...None.
GM...Small Craft Advisory for GMZ031>035-042>044-052>055-072>075.

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Big Coppitt Key
Click for Map
Tue -- 12:47 AM EDT     0.86 feet High Tide
Tue -- 03:41 AM EDT     Moonset
Tue -- 06:38 AM EDT     Sunrise
Tue -- 07:47 AM EDT     0.20 feet Low Tide
Tue -- 11:50 AM EDT     1.45 feet High Tide
Tue -- 05:22 PM EDT     Moonrise
Tue -- 08:17 PM EDT     Sunset
Tue -- 09:31 PM EDT     -0.02 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION

Big Coppitt Key, northeast side, Waltz Key Basin, Florida, Tide feet

Key West
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Tue -- 03:20 AM EDT     0.00 knots Slack
Tue -- 03:42 AM EDT     Moonset
Tue -- 05:27 AM EDT     0.46 knots Max Flood
Tue -- 06:38 AM EDT     Sunrise
Tue -- 07:34 AM EDT     -0.00 knots Slack
Tue -- 11:20 AM EDT     -1.77 knots Max Ebb
Tue -- 03:12 PM EDT     0.00 knots Slack
Tue -- 05:23 PM EDT     Moonrise
Tue -- 06:15 PM EDT     1.13 knots Max Flood
Tue -- 08:18 PM EDT     Sunset
Tue -- 09:07 PM EDT     -0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION

Key West, Florida Current, knots

Full Color Weather Map

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Key West, FL,