Thursday, December12, 2019
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Marine Weather and Tides
Stock Island, 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 7:00AMSunset 5:41PM Thursday December 12, 2019 5:28 AM EST (10:28 UTC) Moonrise 6:18PMMoonset 7:19AM Illumination 100% Phase: Full Moon; Moon at 15 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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GMZ044 Expires:201912121545;;231057 Fzus52 Kkey 120936 Cwfkey Coastal Waters Forecast For The Florida Keys National Weather Service Key West Fl 436 Am Est Thu Dec 12 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. Gmz042>044-121545- 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- 436 Am Est Thu Dec 12 2019
Today..Northeast to east winds near 15 knots. Seas 2 to 4 feet, with highest seas west of cosgrove shoal light. NEarshore waters a moderate chop. Isolated showers.
Tonight..Northeast to east winds near 15 knots, decreasing to 10 to 15 knots. Seas 2 to 3 feet, subsiding to 1 to 3 feet. NEarshore waters a moderate chop, becoming a light to moderate chop. Isolated showers.
Friday..East to southeast winds 10 to 15 knots early, becoming southeast to south and decreasing to 5 to 10 knots. Seas 1 to 3 feet, subsiding to around 1 foot late. NEarshore waters a light to moderate chop, becoming smooth to a light chop. Isolated showers.
Friday night..Southeast to south winds 5 to 10 knots. Seas 1 to 2 feet. NEarshore waters smooth to a light chop. Isolated showers.
Saturday..Southwest to west winds near 10 knots. Seas 1 to 2 feet. NEarshore waters a light chop. Isolated showers.
Saturday night..Winds becoming north near 10 knots. Seas 1 to 2 feet. NEarshore waters a light chop. Isolated showers.
Sunday and Sunday night..Northeast to east winds 10 to 15 knots. Seas 1 to 3 feet. NEarshore waters a light to moderate chop.
Monday and Monday night..East winds 10 to 15 knots. Seas 2 to 3 feet. NEarshore waters a light to moderate chop. Isolated showers.


7 Day Forecast for Marine Location Near Stock Island, FL
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location: 24.57, -81.75     debug


Area Discussion for - Key West, FL
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FXUS62 KKEY 121024 AFDKEY

Area Forecast Discussion National Weather Service Key West FL 524 AM EST Thu Dec 12 2019

DISCUSSION. CURRENTLY. Under variably cloudy skies along with scattered showers along the island chain and the adjacent coastal waters, temperatures are in the lower to mid 70s on the islands. On our marine district, winds are northeast to east ranging from 6 knots at Sombrero Key Light to 19 knots at both Smith Shoal Light and Pulaski Shoal Light.

SHORT TERM. (Today through Saturday night) A weak cold front lying across South Florida, will become stationary today and tonight, before lifting slowly northward up the Sunshine State and the adjacent Atlantic and Gulf waters. This boundary will weaken and become a trough and drop southeastward, before passing through our region late Saturday and Saturday night. With that, low level speed convergence and moisture flux will prompt low chance pops very early this morning, with only a stray shower expected by this afternoon. Thereafter, despite a modest mid and upper level short wave passing through our area Friday night, considerable dry air below 700 mb and a weakening flow will prompt only dime pops from tonight through Friday night. For early this weekend, a meager low level surface trough with slightly higher moisture will result in isolated 20 percent pops. High temperatures will average in the lower 80s with overnight lows in the lower to mid 80s which are about 5 degrees above normal.

LONG TERM. (Sunday through Wednesday) In wake of the aforementioned surface trough, a high pressure ridge along the Southeast United States extending across the Florida Peninsula, and well into the Gulf of Mexico will slowly retreat eastward with the extreme western edge touching our region on Wednesday. This will be in response to a cold front moving southeastward and down the Sunshine State, to well in the Gulf of Mexico. However, medium range guidance and ensemble members are about 6 to 12 hours slower than previous runs, less bullish with mid and upper level dynamics, as well with the equatorward extent of the cold front. Hence, only isolated 20 percent pops will be extended for Wednesday. Temperatures will average in the lower 80s with overnight lows in the lower to mid 70s.

MARINE. Due to northeast to east winds of 15 to 20 knots on the outer waters of Mainland Monroe to beyond Pulaski Shoal Light, a Small Craft Should Exercise Caution headline will be inserted for these waters, with near 15 knots elsewhere. For tonight, moderate east winds will slacken late tonight, before abating significantly while clocking around Friday afternoon into early this weekend.

AVIATION. VFR conditions to prevail at the Key West and Marathon terminals, with the exception of temporary periods of MVFR to IFR conditions in passing showers prior to 12z. Thereafter cloud cover will become scattered and showers isolated at best. Northeast winds (perhaps gusty at EYW) will turn east near 10 knots today and tonight.

CLIMATE. In 1934, the daily record low temperature of 45 degrees was recorded in Key West. Temperature records date back to 1872.

PRELIMINARY POINT TEMPS/POPS. Key West 81 75 82 75 / 20 10 10 10 Marathon 83 75 84 75 / 20 10 10 10

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

Public/Marine/Fire . APA Aviation/Nowcasts . WLC

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 3 mi58 min NE 5.1 G 8.9 75°F 81°F1020.3 hPa
SANF1 - Sand Key, FL 10 mi38 min NE 12 G 13 76°F 1018.6 hPa74°F
42095 16 mi28 min 79°F3 ft
SMKF1 - Sombrero Key, FL 34 mi38 min NNE 6 G 8 76°F 73°F
VCAF1 - 8723970 - Vaca Key, FL 35 mi58 min E 12 G 17 74°F 77°F1020 hPa

Wind History for Key West, FL
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Key West International Airport, FL1 mi35 minENE 610.00 miA Few Clouds75°F70°F84%1020 hPa
Key West Naval Air Station, FL3 mi95 minENE 710.00 miA Few Clouds0°F0°F%1020 hPa

Link to 5 minute data for KEYW

Wind History from EYW (wind in knots)
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Last 24hrSE4W4SE10S7SE9SE4S7Calm4E3N5N4N5NE3NE4NE4NE5NE4NE5E7NE4NE6NE5E6
1 day agoSE12SE12SE12SE12SE13SE11SE11
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2 days agoNE5E4NE4E4E7E9E12E10E10E8SE9SE9E8SE8E8E8E11E10E10SE10SE11E10E11SE11

Tide / Current Tables for Cow Key Channel, Florida
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Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.


Tide / Current Tables for Key West, Florida Current
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Key West
Click for Map
Thu -- 12:14 AM EST     Full Moon
Thu -- 12:40 AM EST     -2.29 knots Max Ebb
Thu -- 04:21 AM EST     0.00 knots Slack
Thu -- 07:01 AM EST     Sunrise
Thu -- 07:12 AM EST     1.58 knots Max Flood
Thu -- 07:18 AM EST     Moonset
Thu -- 10:25 AM EST     -0.00 knots Slack
Thu -- 01:23 PM EST     -1.82 knots Max Ebb
Thu -- 04:59 PM EST     0.00 knots Slack
Thu -- 05:40 PM EST     Sunset
Thu -- 06:18 PM EST     Moonrise
Thu -- 07:10 PM EST     0.89 knots Max Flood
Thu -- 09:39 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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-2.2-2.3-1.9-1.2-0.30.61.31.61.51.10.4-0.5-1.4-1.8-1.7-1.3-0.700.60.90.80.4-0.2-1.1

Weather Map
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wmap_A
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
Wind Forecast for Key West, FL (5,6,7,8)
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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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Disclaimer:
The information on this web site has not been checked for accuracy. It is for entertainment purposes only and should be independently verified before using for any other reason. There are five sources. 1) Documents and manuals from a variety of sources. These have not been checked for accuracy and in many cases have not even been read by anyone associated with L-36.com. I have no idea of they are useful or accurate, I leave that to the reader. 2) Articles others have written and submitted. If you have questions on these, please contact the author. 3) Articles that represent my personal opinions. These are intended to promote thought and for entertainment. These are not intended to be fact, they are my opinions. 4) Small programs that generate result presented on a web page. Like any computer program, these may and in some cases do have errors. Almost all of these also make simplifying assumptions so they are not totally accurate even if there are no errors. Please verify all results. 5) Weather information is from numerious of sources and is presented automatically. It is not checked for accuracy either by anyone at L-36.com or by the source which is typically the US Government. See the NOAA web site for their disclaimer. Finally, tide and current data on this site is from 2007 and 2008 data bases, which may contain even older data. Changes in harbors due to building or dredging change tides and currents and for that reason many of the locations presented are no longer supported by newer data bases. For example, there is very little tidal current data in newer data bases so current data is likely wrong to some extent. This data is NOT FOR NAVIGATION. See the XTide disclaimer for details. In addition, tide and current are influenced by storms, river flow, and other factors beyond the ability of any predictive program.