Big Coppitt Key, FL Marine Weather and Tide Forecast
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Marine Weather and Tide Forecast for Big Coppitt Key, FL

June 22, 2024 4:55 AM EDT (08:55 UTC) Change Location
Sunrise 6:38 AM   Sunset 8:20 PM
Moonrise 8:22 PM   Moonset 5:54 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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GMZ044 Expires:202406221430;;455078 Fzus52 Kkey 220827 Cwfkey
coastal waters forecast for the florida keys national weather service key west fl 427 am edt Sat jun 22 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>044-221430- 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- 427 am edt Sat jun 22 2024

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

Tonight - East to southeast winds 10 to 15 knots, decreasing to near 10 knots after midnight. Seas subsiding to 1 to 2 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 10 to 15 knots, becoming southeast near 10 knots after midnight. Seas around 2 feet. NEarshore waters a light to moderate chop, becoming 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 to south 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 427 Am Edt Sat Jun 22 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 through 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 Big Coppitt Key, FL
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Area Discussion for - Key West, FL
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FXUS62 KKEY 220827 AFDKEY

Area Forecast Discussion National Weather Service Key West FL 427 AM EDT Sat Jun 22 2024

New DISCUSSION, MARINE, AVIATION

DISCUSSION
Issued at 425 AM EDT Sat Jun 22 2024 The Keys are currently in a lull of convective activity after a late evening Cuban outflow boundary brought a broken line of shallow showers across the island chain. KBYX radar is generally echo free near the island chain but a few showers are developing off the northern coast of Cuba and sliding over our southernmost border in the distant Straits of Florida. Offshore marine observation platforms are reporting gentle to moderate east to southeasterly breezes. These are a touch lower in magnitude than the previous night resulting in less relief from this morning's steamy conditions. Temperatures across the island chain are in the lower 80s with dewpoints close behind in the upper 70s to even near 80.

Today and tonight's forecast continues to be frustratingly uncertain when it comes to PoPs. On one hand, many ingredients are present for convective development. The weak low that pushed ashore onto the north Florida Atlantic coastline pulled a great deal of moisture into our area. Yesterday evening's KKEY sounding recorded a PWAT of 2.17 inches with a long, uncapped, and moist lower to mid level profile. Slightly cyclonic surface flow from the nearby low along with divergent flow aloft from the northeast edge of the Central American Gyre (or CAG) and ridging over the southeast CONUS should aid in the synoptic set up for rain today.

Despite this, some recent CAM runs are not particularly eager to produce precipitation over the island chain and instead are keeping most of the action in the Straits of Florida before sending a brief flurry of showers our way later this afternoon.
Reasons for less convective coverage than initially thought include a lack of lift to trigger initiation and a somewhat discontinuous wind profile in the middle of the atmosphere hindering extensive vertical growth. All that being said, opted to stick with the high end chance PoPs (50%) which are notably lower than MOS guidance but perhaps higher than what CAM runs are suggesting. This choice is further supported by the already developing convection in the Florida Straits that looks to be quickly creeping northwest towards the island chain.

As the moist weekend comes to a close, the CAG will finally start to retreat west and weaken allowing the usual Atlantic high to build back over the Keys. Breezes will slacken even more at this time as a typical wet season pattern takes over our sensible weather. Prevailing east to southeasterlies will keep PoPs around normal and return temperatures to just above normal values. There might even be evidence for a cloud line day or two in the middle of the week as breezes become lighter and practically variable in the extended forecast.

MARINE
Issued at 425 AM EDT Sat Jun 22 2024 There are no watches, warnings, or advisories currently 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 through 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
(06Z TAFS)
Issued at 425 AM EDT Sat Jun 22 2024 VFR conditions will prevail at the EYW and MTH terminals through Saturday evening. Above normal rain chances are expected, however exact timing or coverage of convection will be difficult to forecast, so have included just VCSH throughout the TAF period for now. Short-term amendments will be issued as needed, based mainly on radar trends. Short periods of MVFR or even IFR conditions will be possible if convection directly impacts a terminal. Outside of any stronger convection, surface winds will remain from the east to southeast at 6 to 11 knots.

CLIMATE
On this day in Keys weather history, in 1990 the daily record rainfall of 4.30" was recorded at Marathon International Airport.
This is also the wettest day ever recorded in the Marathon area for the month of June. Rainfall records for Marathon date back to 1950.

PRELIMINARY POINT TEMPS/POPS
Key West 88 81 88 80 / 50 50 50 40 Marathon 88 81 88 81 / 50 50 50 40

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




Weather Reporting Stations
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Stations Dist Age Wind AirWater WavesinHgDewPt
KYWF1 - 8724580 - Key West, FL 15 mi56 minESE 5.1G8.9 85°F
SANF1 - Sand Key, FL 20 mi46 minESE 9.9G11 83°F 30.0078°F
SMKF1 - Sombrero Key, FL 23 mi46 min 29.98
42095 25 mi56 min 84°F 85°F2 ft
VCAF1 - 8723970 - Vaca Key, FL 25 mi56 min 86°F
LONF1 - Long Key, FL 41 mi46 minE 8.9G11 83°F 29.9879°F
JKYF1 - Johnson Key, FL 48 mi116 min 85°F
LRKF1 - Little Rabbit Key, FL 48 mi116 min 87°F
MUKF1 - Murray Key, FL 49 mi116 min 86°F
PKYF1 - Peterson Key, FL 49 mi116 min 84°F


Wind History for Key West, FL
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Airport Reports
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AirportDistAgeWind ktVisSkyWeatherAirDewPtRHinHg
KNQX KEY WEST NAS /BOCA CHICA FIELD/,FL 9 sm62 minE 0810 smClear86°F82°F89%30.00
KEYW KEY WEST INTL,FL 12 sm62 minESE 0810 smPartly Cloudy84°F79°F84%30.01
Link to 1 hour of 5 minute data for KNQX
   
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Wind History graph: NQX
(wind in knots)
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Tide / Current for Key Lois, southeast end, Florida
   
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Key Lois
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Sat -- 02:43 AM EDT     0.42 feet Low Tide
Sat -- 06:38 AM EDT     Sunrise
Sat -- 06:53 AM EDT     Moonset
Sat -- 09:03 AM EDT     2.27 feet High Tide
Sat -- 04:40 PM EDT     -0.30 feet Low Tide
Sat -- 08:17 PM EDT     Sunset
Sat -- 09:22 PM EDT     Moonrise
Sat -- 11:00 PM EDT     1.10 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

Key Lois, southeast end, Florida, Tide feet
12
am
0.9
1
am
0.7
2
am
0.5
3
am
0.4
4
am
0.6
5
am
1
6
am
1.4
7
am
1.8
8
am
2.1
9
am
2.3
10
am
2.2
11
am
1.9
12
pm
1.5
1
pm
0.9
2
pm
0.4
3
pm
-0
4
pm
-0.3
5
pm
-0.3
6
pm
-0.1
7
pm
0.1
8
pm
0.5
9
pm
0.8
10
pm
1
11
pm
1.1


Tide / Current for Bahía Honda Harbor (Bridge) Florida Current
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Bahía Honda Harbor (Bridge) Florida Current
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Sat -- 12:22 AM EDT     -0.00 knots Slack
Sat -- 03:24 AM EDT     -1.95 knots Max Ebb
Sat -- 06:37 AM EDT     Sunrise
Sat -- 06:40 AM EDT     0.00 knots Slack
Sat -- 06:52 AM EDT     Moonset
Sat -- 08:46 AM EDT     1.09 knots Max Flood
Sat -- 11:16 AM EDT     -0.00 knots Slack
Sat -- 03:13 PM EDT     -2.75 knots Max Ebb
Sat -- 06:45 PM EDT     0.01 knots Slack
Sat -- 08:17 PM EDT     Sunset
Sat -- 09:21 PM EDT     Moonrise
Sat -- 09:33 PM EDT     2.11 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

Bahía Honda Harbor (Bridge) Florida Current, knots
12
am
0.4
1
am
-0.6
2
am
-1.5
3
am
-1.9
4
am
-1.9
5
am
-1.4
6
am
-0.6
7
am
0.3
8
am
0.9
9
am
1.1
10
am
0.8
11
am
0.2
12
pm
-0.6
1
pm
-1.5
2
pm
-2.3
3
pm
-2.7
4
pm
-2.6
5
pm
-2
6
pm
-0.9
7
pm
0.3
8
pm
1.4
9
pm
2
10
pm
2.1
11
pm
1.7


Weather Map
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GEOS Local Image of Southeast   
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Key West, FL,




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