Marine Forecasts

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7 Day Forecast for Marine Location Near Key Colony Beach, FL

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Area Discussion for - Key West, FL

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FXUS62 KKEY 040222 AFDKEY

Area Forecast Discussion National Weather Service Key West FL 1022 PM EDT Fri Jul 3 2020

DISCUSSION. A few rounds of scattered showers developed along a cloud line just north of the Lower Keys during the afternoon hours, but most of these were rather short-lived. Currently, radars show no precipitation across the area. Temperatures along the island chain are slowly dropping through the 80s, and winds on land are light and variable.

Surface analysis depicts a very weak high pressure ridge axis extending from the western Atlantic through the central Bahamas and the Straits of Florida into the central Gulf of Mexico. Aloft, lower to mid level ridging has shifted slightly southward during the past 24 hours, with the ridge axis now located near Cuba. The 00Z Key West sounding reflects the weakened influence of the ridging aloft, with only a weak inversion near 3000 feet and PW up to 1.90 inches or slightly above normal for this date. However, there is still a fairly dry airmass in the mid levels, with dewpoint depressions in the 700-500 mb layer averaging around 10C. This dry layer likely prevented the afternoon cloud line activity from being more vigorous or longer-lived.

Overnight, there is some chance that the old cloud line just north of the Lower Keys may reactivate during the late night, and isolated showers could develop elsewhere as well, with the airmass not as dry and stable as it has been in recent days. Will not make any change to the existing 20 percent PoPs for the overnight period. Lows by morning should reach the lower 80s for most locations, with winds remaining light and variable to calm.

MARINE. Evening observations show benign conditions across the Keys coastal waters, with mostly SW to W breezes of 5 knots or less prevailing along the reef and in the Gulf waters. Similar conditions will continue overnight, and no significant changes are planned for the late evening forecast issuance.

AVIATION. VFR conditions will prevail overnight into early Friday morning at the EYW and MTH terminals, with only few to scattered cumulus around 2500 feet and little to no shower activity. Conditions should be favorable for a reverse cloud line to develop along the Keys by later Sunday morning and into the afternoon, with the potential for a few rounds of showers and storms at least in the vicinity of either terminal. These could produce short periods of MVFR conditions. For now, have included VCSH and increased cloud cover at both terminals beginning at 15Z.

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

Public/Marine/Fire . Jacobson Aviation/Nowcasts . Jacobson Data Acquisition . DR

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Weather Reporting Stations

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Stations	Dist	Age	Wind	Air Temp	Water Temp	Waves	Pressure	DewPt
VCAF1 - 8723970 - Vaca Key, FL	1 mi	56 min		85°F	93°F		1014.9 hPa
SMKF1 - Sombrero Key, FL	5 mi	44 min	S 1.9 G 2.9
LONF1 - Long Key, FL	16 mi	44 min	S 1.9 G 2.9	86°F			1015.1 hPa	74°F
LRKF1 - Little Rabbit Key, FL	24 mi	164 min			93°F
PKYF1 - Peterson Key, FL	24 mi	104 min			92°F
JKYF1 - Johnson Key, FL	27 mi	104 min			93°F
MUKF1 - Murray Key, FL	29 mi	104 min			91°F
BKYF1	32 mi	104 min			96°F
BOBF1 - Bob Allen, FL	32 mi	104 min			94°F
WRBF1 - Whipray Basin, FL	32 mi	104 min	SW 5.1		96°F
GBTF1 - Garfield Bight, FL	36 mi	104 min			95°F
TBYF1	37 mi	104 min			96°F
KYWF1 - 8724580 - Key West, FL	39 mi	56 min		86°F	91°F		1015.1 hPa
LMDF1 - Little Madeira, FL	41 mi	104 min			94°F
BNKF1 - Butternut Key, FL	41 mi	104 min			94°F
LRIF1	42 mi	104 min			94°F
TRRF1 - Taylor River, FL	43 mi	104 min			98°F
SANF1 - Sand Key, FL	44 mi	44 min	NNW 4.1 G 5.1
NRRF1	45 mi	104 min			92°F
SREF1	45 mi	104 min			92°F
DKKF1 - Duck Key, FL	46 mi	164 min			94°F
TCVF1 - Trout Cove, FL	46 mi	164 min			95°F
GBIF1 - Gunboat Island, FL	47 mi	104 min			91°F
BWSF1 - Blackwater Sound, FL	48 mi	164 min			94°F

Wind History for Vaca Key, FL

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Airport Reports

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Airport	Dist	Age	Wind kt	Visibility	Sky/Weather	Temp	DewPt	Humidity	Pressure
The Florida Keys - Marathon International Airport, FL	4 mi	51 min	S 3	10.00 mi	Fair	85°F	75°F	72%	1014.5 hPa

Link to 5 minute data for KMTH

Wind History from MTH (wind in knots)

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Tide / Current Tables for Boot Key Harbor, Vaca Key, Florida

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Tide / Current Tables for Moser Channel (swingbridge), Florida Current

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Weather Map

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GEOS Local Image of Southeast    EDIT
NOTE: East coast views moved to GEOS-16. They are experimental and not well supported by NOAA so they may not be correct so be warned. This change required redoing a large amount of the GOES code. If the image you are expecting is not showing, please let me know. You may need to use the EDIT function to update your location.
Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East

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Wind Forecast for Key West, FL (23,6,7,8)

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Ground Weather Radar Station Key West, FL

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Gulf Stream Current

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