Sunday, December15, 2019
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Marine Weather and Tides
Big Coppitt Key, FL

Version 3.4
NOTICE
10/9/2019 Updated the Marine Zones.
9/4/2019 Fixed the weather maps due to NOAA moving them.
7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports.
6/2/2019. Many thanks to a user for reporting an error on one of the Edit pages. The switch to PHP 7.2 caused many pages that previously worked to quit working. I fixed many but I still depend on users to report ones I missed. Please report errors HERE or send an email to me at L-36.com. Allen

Sunrise 7:02AMSunset 5:42PM Sunday December 15, 2019 7:08 PM EST (00:08 UTC) Moonrise 9:17PMMoonset 10:08AM Illumination 82% Phase: Waning Gibbous; Moon at 19 days in cycle
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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GMZ035 Expires:201912160330;;840224 Fzus52 Kkey 152122 Cwfkey Coastal Waters Forecast For The Florida Keys National Weather Service Key West Fl 422 Pm Est Sun Dec 15 2019 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. Gmz032-035-160330- Bayside And Gulf Side From Craig Key To West End Of Seven Mile Bridge- Gulf Of Mexico From West End Of Seven Mile Bridge To Halfmoon Shoal Out To 5 Fathoms- 422 Pm Est Sun Dec 15 2019
Tonight..Northeast to east winds near 10 knots, increasing to near 15 knots. Seas 1 to 2 feet, building to 1 to 3 feet. NEarshore waters a light chop, becoming a moderate chop.
Monday..Northeast to east winds near 15 knots. Seas 1 to 3 feet. NEarshore waters a moderate chop. Isolated showers.
Monday night..East winds 10 to 15 knots. Seas 1 to 2 feet. NEarshore waters a light to moderate chop. Isolated showers in the evening, then scattered showers after midnight.
Tuesday..Southeast winds 10 to 15 knots. Seas 1 to 2 feet. NEarshore waters a light to moderate chop. Scattered showers in the morning, then isolated showers in the afternoon.
Tuesday night..Southeast to south winds near 10 knots, becoming variable and decreasing to near 5 knots. Seas 1 foot or less. NEarshore waters a light chop, becoming smooth. Scattered showers.
Wednesday..West to northwest winds 5 to 10 knots, becoming northwest to north and increasing to near 20 knots in the afternoon. Seas 1 foot or less, building to 3 to 4 feet in the afternoon. West of the marquesas keys, seas 1 to 3 feet building to 4 to 6 feet in the afternoon. NEarshore waters smooth to a light chop, becoming rough. Scattered showers.
Wednesday night..North to northeast winds 20 to 25 knots. Seas 3 to 5 feet, except 5 to 8 feet west of the marquesas keys. NEarshore waters very rough. Isolated showers.
Thursday and Thursday night..Northeast winds 20 to 25 knots. Seas 2 to 4 feet, except 4 to 7 feet west of the marquesas keys. NEarshore waters very rough. Isolated showers.
Friday..Northeast to east winds 20 to 25 knots. Seas 2 to 4 feet. NEarshore waters very rough. Isolated showers.
Friday night..Northeast to east winds 15 to 20 knots. Seas 2 to 3 feet. NEarshore waters choppy. Scattered showers.


7 Day Forecast for Marine Location Near Big Coppitt Key, FL
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location: 24.55, -81.53     debug


Area Discussion for - Key West, FL
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FXUS62 KKEY 152044 AFDKEY

Area Forecast Discussion National Weather Service Key West FL 344 PM EST Sun Dec 15 2019

DISCUSSION. A pleasant afternoon across the Florida Keys with gentle northeast to east breezes, temperatures in the upper 70s, and dew points near or just below 60. Skies are sunny. Surface observations place a strengthening surface high to the east of the Atlantic Bight. Yesterday's cold front has stalled over the central Bahamas and Cuba, with its western flank already returning to the north over the Western Caribbean.

FORECAST. Water vapor and satellite derived TPW products place a well- defined moisture plume near Hispaniola, to the southeast of the old frontal boundary. The forecast calls for the previously mentioned high to press east and broaden, allowing northeast to east breezes to freshen, but also driving the moisture plume steadily towards the Keys. We increased rain chances to 50% Monday night as the plume arrives. Forecast soundings depict a well defined veering profile with plenty of moisture. In fact, SFC dew points will climb well into the mid 70s, which will result in plenty of fuel for the convective fire. We have refrained from a mention of thunder at this time, which is in-line with December's climatological lack of thunder. MOS guidance retains high rain chances Tuesday afternoon through Wednesday morning ahead of the next vigorous cold front. This is despite an absolute collapse of kinematic fields. We have retained the previous forecast Tuesday night and Wednesday which holds rain chances at 30-20%. There will be very little cyclonic curvature along the front on Wednesday, and northerly breezes will freshen quickly Wednesday afternoon. The energetic winds Wednesday night will hamper overnight lows, although all of the island chain will fall into the lower 60s. Vigorous breezes will persist Thursday through at least Friday night, and low level fields will become more confluent by the weekend. Thus, we have ramped rain chances up to 30% by Saturday. Thereafter, forecast confidence is low. A vigorous short wave (now south of the Aleutians) will carve out lower heights across the Gulf of Mexico on Saturday and Saturday night. There is now ensemble support for hybrid cyclogenesis very near the Keys sometime between Saturday and Sunday. The exact details and changes to the sensible weather elements are uncertain at this time. We will need a few more days to iron out these details. The northeastward moving low pressure system could be south or north of the Keys, resulting in breezy continental northerlies, or a sloppy tropical warm sector. Stay tuned.

MARINE. High pressure centered over Florida will strengthen over the western North Atlantic tonight through Monday night. A cold front will move southeastward across the Gulf of Mexico Monday night through Tuesday night, before pushing through the Florida Keys Wednesday. Strong north to northeast breezes are expected behind the front from Wednesday afternoon through Thursday night. Fresh to strong breezes will turn more to the northeast to east Friday and Friday night.

AVIATION. VFR conditions will prevail at the Key West and Marathon terminals. Dry weather to continue through the overnight hours. Winds NE to East near 10 knots.

PRELIMINARY POINT TEMPS/POPS. Key West 74 83 74 83 / - 10 50 50 Marathon 74 84 75 84 / - 20 50 40

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

Public/Marine/Fire . CLR Aviation/Nowcasts . SDR Data Collection . NB

Visit us on the web at weather.gov/key

Follow us on Facebook and Twitter at: www.facebook.com/nwskeywest www.twitter.com/nwskeywest


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
KYWF1 - 8724580 - Key West, FL 15 mi57 min E 2.9 G 5.1 74°F 81°F1018.8 hPa
SANF1 - Sand Key, FL 20 mi29 min E 12 G 13 75°F 1017.1 hPa70°F
SMKF1 - Sombrero Key, FL 23 mi29 min ENE 12 G 15 78°F 70°F
42095 25 mi129 min 78°F2 ft
VCAF1 - 8723970 - Vaca Key, FL 25 mi51 min E 5.1 G 7 76°F 77°F1018.7 hPa
JKYF1 - Johnson Key, FL 48 mi69 min 76°F
LRKF1 - Little Rabbit Key, FL 48 mi129 min 77°F
MUKF1 - Murray Key, FL 49 mi69 min 74°F
PKYF1 - Peterson Key, FL 49 mi69 min 76°F

Wind History for Key West, FL
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Key West Naval Air Station, FL9 mi16 minENE 610.00 miFair76°F68°F77%1018.7 hPa
Key West International Airport, FL12 mi16 minE 410.00 miFair74°F68°F82%1018.9 hPa

Link to 5 minute data for KNQX

Wind History from NQX (wind in knots)
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Last 24hrN11N7N7N6N6NE7N8NE3NE8NE9--NE6NE8E9NE10NE10E8E6E6E8E7E6E7E6
1 day agoCalmCalmCalmS10S10SW12SW15SW12SW11SW12SW13SW12SW8SW11SW14SW15SW16SW14SW17W12W10W8N10N9
2 days agoE12E8E10E7E11E10E6NE4NE3NE5E5E8CalmSE6S9S9SW10S12S11SW8SW7W5W4Calm

Tide / Current Tables for Key Lois, southeast end, Florida
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Key Lois
Click for Map
Sun -- 05:04 AM EST     -0.18 feet Low Tide
Sun -- 07:02 AM EST     Sunrise
Sun -- 10:07 AM EST     Moonset
Sun -- 11:23 AM EST     1.30 feet High Tide
Sun -- 04:18 PM EST     0.41 feet Low Tide
Sun -- 05:39 PM EST     Sunset
Sun -- 09:16 PM EST     Moonrise
Sun -- 10:28 PM EST     2.20 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.81.30.80.3-0.1-0.2-0.10.20.50.91.11.31.31.10.80.60.40.50.81.21.622.22.2

Tide / Current Tables for Key West, Florida Current
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Key West
Click for Map
Sun -- 02:52 AM EST     -2.24 knots Max Ebb
Sun -- 06:35 AM EST     0.00 knots Slack
Sun -- 07:03 AM EST     Sunrise
Sun -- 09:19 AM EST     1.44 knots Max Flood
Sun -- 10:09 AM EST     Moonset
Sun -- 12:35 PM EST     -0.00 knots Slack
Sun -- 03:36 PM EST     -1.72 knots Max Ebb
Sun -- 05:41 PM EST     Sunset
Sun -- 07:17 PM EST     0.00 knots Slack
Sun -- 09:17 PM EST     Moonrise
Sun -- 09:26 PM EST     0.82 knots Max Flood
Sun -- 11:58 PM EST     -0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-0.6-1.4-2-2.2-1.9-1.3-0.50.41.11.41.410.4-0.3-1.1-1.6-1.7-1.4-0.8-0.20.40.80.80.5

Weather Map
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wmap_A
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
Wind Forecast for Key West, FL (19,4,5,8)
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Ground Weather Radar Station Key West, FL
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weather_mapweather_map weather_map

Gulf Stream Current


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