Marathon, FL Marine Weather and Tide Forecast
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Marine Weather and Tide Forecast for Marathon, FL

June 22, 2024 12:22 AM EDT (04:22 UTC) Change Location
Sunrise 6:38 AM   Sunset 8:20 PM
Moonrise 8:21 PM   Moonset 5:52 AM 
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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.

Marine Forecasts
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GMZ043 Expires:202406220830;;441270 Fzus52 Kkey 220222 Cwfkey
coastal waters forecast for the florida keys national weather service key west fl 1022 pm edt Fri jun 21 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.
gmz042>044-220830- 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- 1022 pm edt Fri jun 21 2024

Overnight - East to southeast winds 10 to 15 knots. Seas 2 to 3 feet. NEarshore waters a light to moderate chop. Scattered showers and Thunderstorms.

Saturday - East to southeast winds near 15 knots. Seas 2 to 3 feet. NEarshore waters a moderate chop. Scattered showers and Thunderstorms.

Saturday night - East to southeast winds 10 to 15 knots, decreasing to near 10 knots. Seas 2 to 3 feet. NEarshore waters a light to moderate chop, becoming a light chop. Scattered showers and Thunderstorms.

Sunday - East winds near 10 knots. Seas 1 to 2 feet. NEarshore waters a light chop. Scattered showers and Thunderstorms.

Sunday night - East to southeast winds 5 to 10 knots. Seas 1 to 2 feet. NEarshore waters smooth to a light chop. Scattered showers and isolated Thunderstorms.

Monday - East to southeast winds 5 to 10 knots. Seas around 1 foot. NEarshore waters smooth to a light chop. Scattered showers and isolated Thunderstorms.

Monday night - Southeast winds 5 to 10 knots. Seas around 1 foot. NEarshore waters smooth to a light chop. Isolated showers and Thunderstorms.

Tuesday - Southeast to south winds near 5 knots. Seas 1 foot or less. NEarshore waters smooth. Scattered showers and isolated Thunderstorms.

Tuesday night - South winds near 5 knots. Seas 1 foot or less. NEarshore waters smooth. Scattered showers and isolated Thunderstorms.

Wednesday and Wednesday night - South to southwest winds 5 to 10 knots. Seas 1 foot or less. NEarshore waters smooth to a light chop. Scattered showers and isolated Thunderstorms.

GMZ005 Synopsis For Keys Coastal Waters From Ocean Reef To Dry Tortugas 1022 Pm Edt Fri Jun 21 2024

Synopsis - The interaction between low pressure off the east coast of florida, high pressure centered north of bermuda, and broad low pressure in the vicinity of the yucatan peninsula will result in gentle to moderate east to southeast breezes over the next few days. Moisture pulled into our area via the low to the west will result in periods of unsettled weather this weekend. High pressure building over the north atlantic early next week will result in light to gentle southeast to south breezes and a return to near-normal rain and Thunder chances.
the approximate shoreward edge of the gulf stream as of june 19 - .
67 nm south of dry tortugas light - .on loggerhead key. 35 nm south of cosgrove shoal light - .off the marquesas keys. 28 nm south of sand key light - .off key west. 29 nm south of looe key - .off big pine key. 34 nm south of sombrero key light - .off marathon. 23 nm southeast of alligator reef light - .off islamorada. 19 nm southeast of molasses reef light - .off key largo.
gulf stream information courtesy of the national weather service in key west.


7 Day Forecast for Marine Location Near Marathon, FL
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Area Discussion for - Key West, FL
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FXUS62 KKEY 220226 AFDKEY

Area Forecast Discussion National Weather Service Key West FL 1026 PM EDT Fri Jun 21 2024

New DISCUSSION, MARINE, AVIATION

DISCUSSION
Issued at 1026 PM EDT Fri Jun 21 2024

Showers have proliferated across the Straits of Florida within the easterly flow, as well as along an outflow boundary from earlier Cuban convection. This shower activity has raced northwestward and a few island communities in the Lower and Middle Keys have received measurable rainfall. There are a few culprits as to why showers have so easily developed this evening. The 00Z sounding sampled an uninhibited environment with ample CAPE and a PW value over 2". We are also in a broad cyclonic regime, which has likely helped spur on the activity. Interestingly enough, there has been little lightning associated with these storms in our forecast area until this past hour. In terms of winds tonight, marine observation platforms are measuring mainly easterly winds around 10 knots along the Reef. This is a few knots lower than this afternoon, and this decrease is in response to the weakening pressure gradient between an expansive high in the western North Atlantic and the remnants of Tropical Storm Alberto. This weakening is being caused by a disruption in the gradient by a well-defined area of low pressure just off the FL/GA coast. For the remainder of the night, winds will remain out of the east and continue to usher in deep tropical moisture. Shower activity is expected to continue through the night, so have opted to maintain 50% rain chances. No changes were necessary to the forecast.

MARINE
Issued at 1026 PM EDT Fri Jun 21 2024

There are no watches, warnings, or advisories in effect for the Florida Keys coastal waters. From synopsis, the interaction between low pressure off the east coast of Florida, high pressure centered north of Bermuda, and broad low pressure in the vicinity of the Yucatan Peninsula will result in gentle to moderate east to southeast breezes over the next few days. Moisture pulled into our area via the low to the west will result in periods of unsettled weather this weekend. High pressure building over the North Atlantic early next week will result in light to gentle southeast to south breezes and a return to near-normal rain and thunder chances.

AVIATION
(00Z TAFS)
Issued at 1026 PM EDT Fri Jun 21 2024

Scattered showers and isolated thunderstorms are possible over the next few hours at both island terminals. A TEMPO is in place at EYW for a shower approaching the terminal. More short-term amendments may be necessary later in the TAF period for increasing shower activity, especially tomorrow during the day.
Surface winds outside of any convection will be out of the east at 10 to 15 knots. Occasional gusts of 15 to 20 knots are also possible.

CLIMATE
On this day in 1986, an F1 tornado caused $250k in damage between Plantation Key and Tavernier. Tropical Storm Bonnie formed in the central Gulf moving westward on the 23rd, so this tornado may have been caused by the initial depression/circulation.

PRELIMINARY POINT TEMPS/POPS
Key West 81 89 80 89 / 50 50 50 50 Marathon 80 90 80 90 / 50 50 50 50

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




Weather Reporting Stations
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Stations Dist Age Wind AirWater WavesinHgDewPt
VCAF1 - 8723970 - Vaca Key, FL 4 mi53 minESE 4.1G7 84°F 87°F
SMKF1 - Sombrero Key, FL 8 mi33 min 30.03
LONF1 - Long Key, FL 12 mi33 minE 11G13 82°F 30.0377°F
KYWF1 - 8724580 - Key West, FL 43 mi53 minSE 6G11 82°F 85°F30.07
SANF1 - Sand Key, FL 49 mi33 minESE 6G8 82°F 30.0675°F


Wind History for Vaca Key, FL
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Airport Reports
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AirportDistAgeWind ktVisSkyWeatherAirDewPtRHinHg
KMTH THE FLORIDA KEYS MARATHON INTL,FL 1 sm21 minSSE 0510 smClear82°F79°F89%30.05
Link to 1 hour of 5 minute data for KMTH
   
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Wind History graph: MTH
(wind in knots)
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Tide / Current for Vaca Key-Fat Deer Key bridge, Florida
   
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Vaca Key-Fat Deer Key bridge
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Fri -- 02:12 AM EDT     0.42 feet Low Tide
Fri -- 05:52 AM EDT     Moonset
Fri -- 06:35 AM EDT     Sunrise
Fri -- 08:23 AM EDT     1.96 feet High Tide
Fri -- 04:06 PM EDT     -0.26 feet Low Tide
Fri -- 08:16 PM EDT     Sunset
Fri -- 08:22 PM EDT     Moonrise
Fri -- 09:10 PM EDT     Full Moon
Fri -- 10:22 PM EDT     0.99 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

Vaca Key-Fat Deer Key bridge, Florida, Tide feet
12
am
0.7
1
am
0.5
2
am
0.4
3
am
0.5
4
am
0.7
5
am
1.1
6
am
1.5
7
am
1.8
8
am
1.9
9
am
1.9
10
am
1.8
11
am
1.4
12
pm
1
1
pm
0.5
2
pm
0.1
3
pm
-0.2
4
pm
-0.3
5
pm
-0.2
6
pm
0
7
pm
0.3
8
pm
0.6
9
pm
0.8
10
pm
1
11
pm
1


Tide / Current for Moser Channel (swingbridge), Florida Current
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Moser Channel (swingbridge)
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Fri -- 12:33 AM EDT     -0.00 knots Slack
Fri -- 03:25 AM EDT     -1.61 knots Max Ebb
Fri -- 05:53 AM EDT     Moonset
Fri -- 06:36 AM EDT     Sunrise
Fri -- 06:38 AM EDT     0.00 knots Slack
Fri -- 08:53 AM EDT     1.01 knots Max Flood
Fri -- 11:32 AM EDT     -0.00 knots Slack
Fri -- 03:13 PM EDT     -2.33 knots Max Ebb
Fri -- 06:41 PM EDT     0.00 knots Slack
Fri -- 08:16 PM EDT     Sunset
Fri -- 08:23 PM EDT     Moonrise
Fri -- 09:10 PM EDT     Full Moon
Fri -- 09:42 PM EDT     2.00 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

Moser Channel (swingbridge), Florida Current, knots
12
am
0.5
1
am
-0.4
2
am
-1.2
3
am
-1.6
4
am
-1.6
5
am
-1.2
6
am
-0.5
7
am
0.3
8
am
0.8
9
am
1
10
am
0.8
11
am
0.3
12
pm
-0.3
1
pm
-1.2
2
pm
-2
3
pm
-2.3
4
pm
-2.2
5
pm
-1.6
6
pm
-0.7
7
pm
0.3
8
pm
1.3
9
pm
1.9
10
pm
2
11
pm
1.7


Weather Map
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GEOS Local Image of gulf of mexico   
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Key West, FL,




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