Marathon, FL Marine Weather and Tide Forecast
L-36.com
Top   Marine   7-Day   NWS   Buoy   Airport   Tide   Map   GEOS   Radar   TAF  

Marine Weather and Tide Forecast for Marathon, FL

June 16, 2024 6:01 AM EDT (10:01 UTC) Change Location
Sunrise 6:37 AM   Sunset 8:18 PM
Moonrise 2:31 PM   Moonset 1:35 AM 
  Print   HELP   Reset   Save   Recall  New
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
    EDIT      HIDE   Help
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- 428 Am Edt Sun Jun 16 2024

.small craft should exercise caution for increasing winds - .

Today - East to southeast winds near 15 knots, becoming east and increasing to 15 to 20 knots. Seas 3 to 4 feet, occasionally to 5 feet. NEarshore waters a moderate chop, becoming choppy. Isolated showers and Thunderstorms.

Tonight - Northeast to east winds 15 to 20 knots. Seas 3 to 4 feet, occasionally to 5 feet, except 4 to 5 feet, occasionally to 6 feet west of cosgrove shoal light. NEarshore waters choppy. Isolated showers and Thunderstorms.

Monday - East winds near 20 knots. Seas 3 to 4 feet, occasionally to 5 feet, except 4 to 5 feet, occasionally to 6 feet west of cosgrove shoal light. NEarshore waters rough. Isolated showers and Thunderstorms.

Monday night and Tuesday - East winds near 20 knots. Seas 3 to 4 feet, occasionally to 5 feet, except 4 to 5 feet, occasionally to 6 feet west of cosgrove shoal light. NEarshore waters rough. Scattered showers and isolated Thunderstorms.

Tuesday night and Wednesday - East winds near 20 knots. Seas 3 to 4 feet, occasionally to 5 feet, except 4 to 5 feet, occasionally to 6 feet west of cosgrove shoal light. NEarshore waters rough. Scattered showers and isolated Thunderstorms.

Wednesday night - East winds near 20 knots, decreasing to near 15 knots. Seas 3 to 4 feet, occasionally to 5 feet, subsiding to 2 to 4 feet. NEarshore waters rough, becoming a moderate chop. Scattered showers and isolated Thunderstorms.

Thursday - East winds near 15 knots, becoming east to southeast. Seas 2 to 3 feet. NEarshore waters a moderate chop. Scattered showers and isolated Thunderstorms.

Thursday night - East to southeast winds near 15 knots. Seas 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 428 Am Edt Sun Jun 16 2024

Synopsis - Moderate to fresh breezes this morning will gradually increase over the next couple of days due to high pressure building in from the north and falling pressures near the yucatan peninsula and bay of campeche. Moderate to fresh breezes will continue through mid week with winds tending stronger especially across our southwestern and western waters.
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.


7 Day Forecast for Marine Location Near Marathon, FL
   Hourly   EDIT   Help   Map   HIDE
NEW! Add second zone forecast


Area Discussion for - Key West, FL
      HIDE   Help   
NOTE: mouseover dotted underlined text for definition
FXUS62 KKEY 160656 AFDKEY

Area Forecast Discussion National Weather Service Key West FL 256 AM EDT Sun Jun 16 2024

New DISCUSSION, MARINE, AVIATION

DISCUSSION
Issued at 255 AM EDT Sun Jun 16 2024 An upper-level composite analysis early this morning reveals a building deep layer ridge over most of the eastern United States.
During the last 24 hours, geopotential heights over the Florida Keys have risen through the lower and middle troposphere. A comparison of data collected from the Key West Friday and Saturday evening radiosonde balloons shows this clearly. Lower- tropospheric flow has both increased and become more anticyclonic and difluent during the last 12 hours or so, and this more than anything has led to gradual dissipation and suppression of cumulus convection. However, both satellite and surface observations indicate extensive altostratus and cirrostratus layers keeping it mostly cloudy across the Florida Keys and adjacent coastal waters.
Current air temperatures in most Keys island communities are holding steady around 83-84F, with dewpoint temperatures 73-77F, yielding heat indices of 91-92F. Breezes have freshened, and winds are blowing mainly out of due east at a steady 10-15 mph over land.

Our basic prognostic reasoning remains unchanged from the previous cycle. The lengthy cloudy and wet weather pattern is coming to an end. Sky cover should gradually decrease, with much lower measurable rain chances today through Tuesday. Thereafter, rain chances should spike again as a fairly robust upper-tropospheric cold-core cyclone develops in response to an anticylonic wave break over the western North Atlantic, and then migrates westward.
Another interesting development is the potential for a tropical cyclone to emerge northeast of the Bahamas from the coalescence of low-level vorticity over warm sea surface temperatures amidst enhanced deep cumulus convection from ascent forced by a downstream sharp upper trough/jet/incipient upper low. The depth and strength of the deep-layer ridge over the eastern United States will ensure that whatever emerges from this area will move westward or west-northwestward toward Florida, Georgia, or the Carolinas. National Hurricane Center specialists are forecasting a tropical low to form by mid-week, with a 30 percent chance for tropical cyclone formation thereafter. The evolution of this potential system could result in lower than forecast wind speeds locally later this week if it moves north of the service area and disrupts the local gradient flow. However, too much uncertainty exists to adjust the forecast as such for this cycle.

MARINE
Issued at 255 AM EDT Sun Jun 16 2024 Moderate to fresh east breezes prevail across Florida Keys coastal waters early this morning. Significant wave heights at Satan Shoal have been running 3-4 feet, and it is probably a foot or two higher in the Gulf Stream. Winds and seas should increase further today and tonight, as gradient flow sharpens between an expanding surface high pressure cell over the Atlantic and lower pressures over the Yucatan Channel and southwestern Gulf Basin. As such, winds will be highest over western zones where Small Craft Should Exercise Caution. A Small Craft Advisory may be needed by tonight for some of these zones.

AVIATION
(00Z TAFS)
Issued at 255 AM EDT Sun Jun 16 2024 VFR conditions will prevail at both EYW and MTH through the TAF period. Near surface winds will be east to southeast and be near 10 knots increasing to 10 to 15 knots late morning.

CLIMATE
On this day in 1906, a Category One Hurricane moved slowly to the north-northeast crossing what is now the Seven Mile Bridge.
Instrumentation in Key West recorded a minimum pressure of 29.62" and a peak wind of 42 mph.

PRELIMINARY POINT TEMPS/POPS
Key West 87 81 88 82 / 20 20 30 30 Marathon 88 81 88 82 / 20 20 30 30

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




Weather Reporting Stations
   EDIT       HIDE   Help
Stations Dist Age Wind AirWater WavesinHgDewPt
VCAF1 - 8723970 - Vaca Key, FL 4 mi44 minESE 2.9G7 84°F
SMKF1 - Sombrero Key, FL 8 mi32 min 29.93
LONF1 - Long Key, FL 12 mi32 minESE 11G14 84°F 29.9476°F
LRKF1 - Little Rabbit Key, FL 20 mi122 min 82°F
PKYF1 - Peterson Key, FL 20 mi122 min 82°F
JKYF1 - Johnson Key, FL 23 mi122 min 81°F
MUKF1 - Murray Key, FL 26 mi122 min 82°F
BOBF1 - Bob Allen, FL 28 mi122 min 82°F
WRBF1 - Whipray Basin, FL 28 mi122 min4.1 83°F
BKYF1 29 mi122 min 83°F
GBTF1 - Garfield Bight, FL 33 mi122 min 84°F
TBYF1 34 mi122 min 84°F
WWEF1 35 mi182 min 83°F
BNKF1 - Butternut Key, FL 37 mi122 min 83°F
LMDF1 - Little Madeira, FL 37 mi122 min 84°F
BSKF1 38 mi182 min 81°F
CWAF1 39 mi182 min 83°F
LRIF1 39 mi122 min 83°F
TRRF1 - Taylor River, FL 39 mi122 min 86°F
DKKF1 - Duck Key, FL 42 mi122 min 83°F
NRRF1 42 mi122 min 82°F
JBYF1 43 mi122 min 85°F
KYWF1 - 8724580 - Key West, FL 43 mi44 minESE 8.9G16 85°F29.96
SREF1 43 mi122 min 83°F
TCVF1 - Trout Cove, FL 43 mi122 min 83°F
BWSF1 - Blackwater Sound, FL 44 mi122 min 83°F
GBIF1 - Gunboat Island, FL 45 mi122 min 82°F
LBSF1 - Little Blackwater, FL 46 mi122 min 85°F
LSNF1 - Long Sound, FL 46 mi122 min 83°F
TPEF1 - Tarpon Bay East, FL 47 mi122 min 82°F
CANF1 - Cane Patch, FL 48 mi122 min 81°F
HCEF1 - Highway Creek, FL 48 mi122 min 83°F
MNBF1 48 mi122 min 81°F
THRF1 48 mi122 min 86°F
SANF1 - Sand Key, FL 49 mi32 minE 17G19 84°F 29.9577°F


Wind History for Vaca Key, FL
(wind in knots)    EDIT      HIDE   Help
toggle option: (graph/table)



Airport Reports
    EDIT      HIDE   Help   Click EDIT to display multiple airports. Follow links for more data.
AirportDistAgeWind ktVisSkyWeatherAirDewPtRHinHg
KMTH THE FLORIDA KEYS MARATHON INTL,FL 1 sm68 minE 1010 smClear84°F77°F79%29.96
Link to 1 hour of 5 minute data for KMTH
   
NEW Forecast page for KMTH


Wind History graph: MTH
(wind in knots)
toggle option: (graph/table)


Tide / Current for Vaca Key-Fat Deer Key bridge, Florida
   
EDIT   Weekend mode (on/off)   HIDE   Help
Vaca Key-Fat Deer Key bridge
Click for Map
Sun -- 02:35 AM EDT     Moonset
Sun -- 04:58 AM EDT     1.40 feet High Tide
Sun -- 06:34 AM EDT     Sunrise
Sun -- 12:27 PM EDT     0.18 feet Low Tide
Sun -- 03:30 PM EDT     Moonrise
Sun -- 06:08 PM EDT     0.97 feet High Tide
Sun -- 08:15 PM EDT     Sunset
Sun -- 11:40 PM EDT     0.39 feet Low 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
0.4
1
am
0.6
2
am
0.9
3
am
1.2
4
am
1.3
5
am
1.4
6
am
1.4
7
am
1.2
8
am
1
9
am
0.7
10
am
0.5
11
am
0.3
12
pm
0.2
1
pm
0.2
2
pm
0.3
3
pm
0.5
4
pm
0.8
5
pm
0.9
6
pm
1
7
pm
0.9
8
pm
0.8
9
pm
0.7
10
pm
0.5
11
pm
0.4


Tide / Current for Moser Channel (swingbridge), Florida Current
   EDIT      HIDE   Help
Moser Channel (swingbridge)
Click for Map
Sun -- 02:36 AM EDT     Moonset
Sun -- 02:48 AM EDT     0.00 knots Slack
Sun -- 05:16 AM EDT     0.72 knots Max Flood
Sun -- 06:35 AM EDT     Sunrise
Sun -- 08:08 AM EDT     -0.00 knots Slack
Sun -- 11:38 AM EDT     -1.53 knots Max Ebb
Sun -- 03:05 PM EDT     0.00 knots Slack
Sun -- 03:31 PM EDT     Moonrise
Sun -- 06:11 PM EDT     1.13 knots Max Flood
Sun -- 08:15 PM EDT     Sunset
Sun -- 09:19 PM EDT     -0.00 knots Slack
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
-1.2
1
am
-1
2
am
-0.5
3
am
0.1
4
am
0.5
5
am
0.7
6
am
0.7
7
am
0.5
8
am
0.1
9
am
-0.5
10
am
-1.1
11
am
-1.5
12
pm
-1.5
1
pm
-1.3
2
pm
-0.8
3
pm
-0.1
4
pm
0.6
5
pm
1
6
pm
1.1
7
pm
1.1
8
pm
0.8
9
pm
0.2
10
pm
-0.5
11
pm
-1


Weather Map
      HIDE   Help


GEOS Local Image of Southeast   
EDIT   HIDE



Key West, FL,




NOTICE: Some pages have affiliate links to Amazon. As an Amazon Associate, I earn from qualifying purchases. Please read website Cookie, Privacy, and Disclamers by clicking HERE. To contact me click HERE. For my YouTube page click HERE