Sunrise 6:45 AM   Sunset 8:02 PM Moonrise 6:42 AM   Moonset 9:00 PM

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GMZ043 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 Edt Thu May 9 2024
This afternoon - Southeast winds near 15 knots, becoming east to southeast and decreasing to near 10 knots. Seas 2 to 3 feet, subsiding to 1 to 2 feet. NEarshore waters a moderate chop, becoming a light chop.Tonight - Southeast winds 10 to 15 knots. Seas around 2 feet. NEarshore waters a light to moderate chop. Friday - Southeast to south winds near 10 knots, becoming southwest to west near 5 knots in the afternoon. Seas 1 to 2 feet, subsiding to around 1 foot. NEarshore waters a light chop, becoming smooth.Friday night - West to northwest winds near 5 knots. Seas 1 foot. NEarshore waters smooth. Isolated showers. Saturday - West winds 5 to 10 knots, increasing to near 10 knots in the afternoon. Seas around 1 foot. NEarshore waters smooth to a light chop, becoming a light chop. Isolated showers.Saturday night - West to northwest winds 10 to 15 knots, becoming northwest 5 to 10 knots after midnight. Seas around 1 foot. NEarshore waters a light to moderate chop, becoming smooth to a light chop. Isolated showers.Sunday - North to northeast winds near 5 knots. Seas 1 foot or less. NEarshore waters smooth. Isolated showers. Sunday night - Northeast winds 5 to 10 knots, becoming east to southeast after midnight. Seas 1 foot or less. NEarshore waters smooth to a light chop. Isolated showers. Monday - East to southeast winds increasing to near 10 knots. Seas building to 1 to 2 feet. NEarshore waters becoming a light chop. Isolated showers and Thunderstorms. Monday night - Southeast winds near 15 knots. Seas building to 2 to 3 feet. NEarshore waters a moderate chop. Scattered showers and isolated Thunderstorms.

GMZ005 Synopsis For Keys Coastal Waters From Ocean Reef To Dry Tortugas 1026 Am Edt Thu May 9 2024
Synopsis - High pressure over the western north atlantic will maintain gentle to moderate southeast breezes this afternoon and tonight. Breezes will slacken and veer to the south and southwest on Friday, continuing to veer around the compass during the weekend as a weak frontal boundary moves down the florida peninsula. The front will dissipate near the keys waters on Sunday, then southeast breezes will resume early next week as another high pressure area moves over the western atlantic.

FXUS62 KKEY 091853 AFDKEY

Area Forecast Discussion National Weather Service Key West FL 253 PM EDT Thu May 9 2024

New DISCUSSION, MARINE, AVIATION

DISCUSSION
Issued at 251 PM EDT Thu May 9 2024 A very warm and sticky afternoon is ongoing across the Florida Keys. GOES 16 Visible satellite imagery shows mainly low level fair weather cumulus streaming from southeast to northwest through the Keys. Temperatures along the Island Chain are in the mid to upper 80s with dew points in the lower to mid 70s. The Big Pine Key RAWS has also reached 91 degrees so far this afternoon.
Therefore, the warm temperatures combined with the humidity is making it feel like its in the lower to mid 90s for much of the Chain with the exception of Big Pine where the RAWS is recording a heat index near 100 degrees. Surface high pressure remains in place across the western North Atlantic with the center of this high about midway between Hispaniola and Bermuda. Due to this, marine platforms surrounding the Keys are observing southeast to south winds near 10 knots with Island Chain communities observing near 10 mph.

FORECAST
The aforementioned high pressure system will continue to dominate the pattern into Saturday with near nil rain chances and southeast to south gentle to moderate breezes. Model relative humidity cross-sections and forecast soundings so a fairly dry atmospheric profile through Saturday night resulting in a dry forecast. The main change here was to remove rain chances for the Friday night through Saturday night time frame.

A frontal system currently along the North Gulf Coast is expected to drift southward over the weekend while weakening. However, the front is expected to result in a wind shift across the Keys over the weekend to the northwest to north with gentle to moderate breezes expected. A subtle but noticeable dip in the dew points is anticipated for Saturday night through Sunday night before creeping back up to the tropical feel to start the new week.
Starting Sunday, weak moisture return is anticipated resulting in slight chances returning to the forecast.

The forecast for much of next week will be dominated by another surface high pressure system moving across the Southeastern United States and then into the western North Atlantic. East to southeasterly flow around the western periphery of the high will result in moisture perturbations keeping slight chances in the forecast. Also, with instability also increasing during this time, thunder has been maintained in the forecast and continued for the new day added to the forecast. Starting next week, the heat looks to really begin to take hold with daytime high in the upper 80s and overnight lows in the lower 80s. Therefore, not much relief from the daytime heat is expected at night.

MARINE
Issued at 251 PM EDT Thu May 9 2024 There are currently no watches, warnings, or advisories in effect across the Florida Keys coastal waters. From synopsis, high pressure over the western North Atlantic will maintain gentle to moderate southeast to south breezes tonight. Breezes will slacken and veer to the south and southwest on Friday, continuing to veer around the compass during the weekend as a weak frontal boundary moves down the Florida peninsula. The front will dissipate near the Keys waters on Sunday, then southeast breezes will resume early next week as another high pressure area moves over the western Atlantic.

AVIATION
(18Z TAFS)
Issued at 251 PM EDT Thu May 9 2024 VFR conditions will prevail through tomorrow afternoon at EYW and MTH. FEW-SCT clouds will move across both terminals, with bases generally between 2-3 kft. Surface winds will remain from the southeast at 8 to 13 knots.

CLIMATE
On this day in 1992, the daily record high temperature of 75F was recorded in Marathon. This is also tied for the coolest high temperature ever recorded in May. Temperature records for Marathon date back to 1950.

PRELIMINARY POINT TEMPS/POPS
Key West 87 80 87 79 / 0 0 0 0 Marathon 87 80 87 79 / 0 0 0 0

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

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Thu -- 03:40 AM EDT     0.30 feet Low Tide
Thu -- 06:43 AM EDT     Sunrise
Thu -- 07:42 AM EDT     Moonrise
Thu -- 09:50 AM EDT     2.54 feet High Tide
Thu -- 05:17 PM EDT     -0.43 feet Low Tide
Thu -- 07:58 PM EDT     Sunset
Thu -- 10:00 PM EDT     Moonset
Thu -- 11:39 PM EDT     1.24 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION

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Moser Channel (swingbridge)
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Thu -- 01:45 AM EDT     -0.00 knots Slack
Thu -- 04:39 AM EDT     -1.98 knots Max Ebb
Thu -- 06:43 AM EDT     Sunrise
Thu -- 07:42 AM EDT     Moonrise
Thu -- 07:49 AM EDT     0.00 knots Slack
Thu -- 10:16 AM EDT     1.34 knots Max Flood
Thu -- 01:02 PM EDT     -0.00 knots Slack
Thu -- 04:33 PM EDT     -2.57 knots Max Ebb
Thu -- 07:58 PM EDT     Sunset
Thu -- 08:00 PM EDT     0.00 knots Slack
Thu -- 10:00 PM EDT     Moonset
Thu -- 11:03 PM EDT     2.11 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION

Moser Channel (swingbridge), Florida Current, knots

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