Marine Forecasts

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7 Day Forecast for Marine Location Near Layton, FL

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Area Discussion for - Key West, FL

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FXUS62 KKEY 091554 AFDKEY

Area Forecast Discussion National Weather Service Key West FL 1054 AM EST Mon Dec 9 2019

DISCUSSION. Water vapor imagery shows a relatively benign and flat upper level pattern across the eastern two-thirds of the US. Downstream there still remains a weak upper level trough that is positioned between Bermuda and the Bahamas. This feature is continuing on an eastward trek. Looking upstream, a deep positive tilted trough is moving out of California and into the Four Corners region. This trough extends from a parent upper level low centered just northeast of Hudson Bay. Meanwhile, ridge that was previously located in western Mexico continues to push east and is now centered near Honduras/Nicaragua.

At the surface, high pressure over the western North Atlantic continues its eastward exodus in response to a strengthening low that is moving northeast through the Great Lakes region. A trailing cold front associate with the low stretches from the upper Great Lakes to the Texas Panhandle. Behind this front is another high pressure cell digging southeast from the northern High Plains and ultimately driving the front southeast.

Closer to home, visible satellite shows quite a bit of cu developing in the southeast flow just above the surface, and moving over the Keys. Key West radar continues to show some light showers associated with a speed and directional convergence over the western Florida Straits. These showers are moving to the northwest at generally 15 knots. A few stray showers did manage to move through the Lower Keys just after midnight and the airport in Key West reported 0.08 inches of rainfall. Temperatures have warmed up a little faster than expected with the Lower and Middle Keys already at or around 80 degrees. Winds are generally E/SE at around 10 knots or less, strongest in the Lower Keys.

Short term update - No big changes made, however given the fact that we have warmed to near 80 in the Lower and Middle Keys, have upped the temperatures a couple degrees. Still expecting temperatures to hold out in the lower 80s given that clouds will be moving across the Keys for the remainder of the daytime heating period. Easterly winds will keep overnight temperatures mild, only expecting temperatures to fall into the mid 70s tonight. Otherwise, no changes planned or needed for the short term.

MARINE. Gentle to moderate E/SE breezes are occurring for most waters with the exception of the Florida Straits where moderate to fresh breezes are ongoing. As such, a Small Craft Should Exercise Caution (SCEC) headline is in effect for these waters. Winds will maintain this strength through at least Tuesday due to the ridge in the North Atlantic extending south and southwestward. At this time it appears that only the Florida Straits will need SCEC headlines through Tuesday.

AVIATION. VFR conditions are expected at both island terminals for the rest of this morning and afternoon. Only SCT cloud coverage is anticipated through 00z, with bases generally around 2500 feet. East to southeast winds should increase to around 10 knots this afternoon, with occasional gusts between 15 to 18 knots.

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

Public/Marine/Fire . LIW Aviation/Nowcasts . BT Data Collection . NB

Visit us on the web at weather.gov/key

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Weather Reporting Stations

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Stations	Dist	Age	Wind	Air Temp	Water Temp	Waves	Pressure	DewPt
PKYF1 - Peterson Key, FL	10 mi	102 min			73°F
LONF1 - Long Key, FL	12 mi	32 min		77°F			1017.6 hPa	72°F
BOBF1 - Bob Allen, FL	16 mi	102 min			73°F
LRKF1 - Little Rabbit Key, FL	16 mi	162 min			74°F
WRBF1 - Whipray Basin, FL	19 mi	102 min	ENE 5.1		73°F
BNKF1 - Butternut Key, FL	21 mi	102 min			72°F
JKYF1 - Johnson Key, FL	22 mi	102 min			72°F
BKYF1	24 mi	102 min			73°F
VCAF1 - 8723970 - Vaca Key, FL	25 mi	60 min	ESE 8.9 G 12	80°F	74°F		1019 hPa
TBYF1	25 mi	102 min			72°F
LMDF1 - Little Madeira, FL	26 mi	102 min			74°F
MUKF1 - Murray Key, FL	26 mi	102 min			73°F
GBTF1 - Garfield Bight, FL	27 mi	102 min			73°F
SMKF1 - Sombrero Key, FL	27 mi	32 min	E 14 G 17	78°F				71°F
DKKF1 - Duck Key, FL	28 mi	162 min			72°F
BWSF1 - Blackwater Sound, FL	28 mi	162 min			72°F
TRRF1 - Taylor River, FL	29 mi	102 min			72°F
TCVF1 - Trout Cove, FL	29 mi	162 min			73°F
JBYF1	30 mi	102 min			72°F
LBSF1 - Little Blackwater, FL	31 mi	162 min			71°F
THRF1	32 mi	162 min			71°F
LSNF1 - Long Sound, FL	32 mi	102 min			73°F
HCEF1 - Highway Creek, FL	33 mi	102 min			74°F
WWEF1	34 mi	162 min			71°F
LRIF1	36 mi	102 min			72°F
MDKF1	36 mi	102 min			72°F
CWAF1	39 mi	162 min			71°F
NRRF1	40 mi	102 min			69°F
SREF1	45 mi	102 min			71°F
TPEF1 - Tarpon Bay East, FL	45 mi	162 min			69°F
GBIF1 - Gunboat Island, FL	45 mi	102 min			71°F
CANF1 - Cane Patch, FL	46 mi	102 min			68°F
HREF1	48 mi	102 min			70°F

Wind History for Vaca Key, FL

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NE7

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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	22 mi	49 min	E 7	10.00 mi	A Few Clouds	83°F	71°F	67%	1018.6 hPa

Link to 5 minute data for KMTH

Wind History from MTH (wind in knots)

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Tide / Current Tables for Alligator Reef Light, Florida (2)

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Tide / Current Tables for Long Key, east of drawbridge, Florida Current

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Weather Map

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GEOS Local Image of    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 (12,3,4,5)

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Ground Weather Radar Station Miami, FL

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Gulf Stream Current

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