Wednesday, December11, 2019
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Marine Weather and Tides
Layton, 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 6:56AMSunset 5:33PM Wednesday December 11, 2019 11:06 AM EST (16:06 UTC) Moonrise 5:22PMMoonset 6:15AM 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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GMZ031 Florida Bay Including Barnes Sound, Blackwater Sound, And Buttonwood Sound- 1016 Am Est Wed Dec 11 2019
This afternoon..East to southeast winds 5 to 10 knots. Bay waters smooth to a light chop. Isolated showers.
Tonight..Northeast to east winds near 10 knots, increasing to near 15 knots. Bay waters a light chop, becoming a moderate chop. Scattered showers developing.
Thursday..Northeast to east winds near 15 knots, decreasing to 10 to 15 knots. Bay waters a moderate chop, becoming a light to moderate chop. Isolated showers.
Thursday night..East winds near 15 knots. Bay waters a moderate chop. Isolated showers.
Friday..Southeast winds 10 to 15 knots, decreasing to 5 to 10 knots. Bay waters a light to moderate chop, becoming smooth to a light chop. Isolated showers.
Friday night..Southeast to south winds 5 to 10 knots. Bay waters smooth to a light chop. Scattered showers.
Saturday..Southwest to west winds 5 to 10 knots. Bay waters smooth to a light chop. Isolated showers.
Saturday night..Northwest to north winds near 5 knots. Bay waters smooth. Isolated showers.
Sunday..Northeast to east winds near 10 knots. Bay waters a light chop.
Sunday night..Northeast to east winds 10 to 15 knots. Bay waters a light to moderate chop.


7 Day Forecast for Marine Location Near Layton, FL
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location: 24.8, -80.65     debug


Area Discussion for - Key West, FL
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FXUS62 KKEY 111029 AFDKEY

Area Forecast Discussion National Weather Service Key West FL 529 AM EST Wed Dec 11 2019

DISCUSSION. CURRENTLY. Under variably cloudy skies and light east to southeast winds, temperatures are holding in the mid 70s along the island chain. Meanwhile, local radars are detecting widely scattered showers, with the majority of the cells on the nearshore and offshore waters from American Shoal Light to Twenty-Eight Foot Shoal Light. On our marine district, winds are mainly east to southeast ranging from 3 knots at Pulaski Shoal Light to 14 knots at Alligator Reef Light.

SHORT TERM. (Today through Friday night) A western Atlantic ridge extending near our region today will retreat eastward, as a shallow cold front/trough drops southward and to along the north coast of the island of Cuba by Thursday morning. With that, low level speed convergence and increasing moisture flux will prompt chance pops for later tonight. Otherwise, with the nearby boundary lifting northward, limited moisture confined to near 850 mb will result in only isolated pops for the balance of this period.

LONG TERM. (Saturday through Tuesday) Medium range guidance is pretty similar with a subtle trough being bridged by high pressure on Saturday, with the high pressure system over the Southeast United States slipping into the western Atlantic Ocean by Sunday. Thereafter, a western Atlantic ridge axis will sag down the Sunshine State and near our region early next week. Given limited moisture and weak low level flow, nickle to 20 percent pops will be kept through this period. High temperatures will average near 80 degrees with overnight lows in the lower 70s.

MARINE. Gentle to moderate east winds early this morning will slacken into the light to gentle range this afternoon. For tonight, a shallow cold front/trough will drop southward and cross our marine district after midnight. In wake of this boundary, the areal coverage and extent of the increasing winds is still uncertain due to the relatively cool Gulf and Bay waters and possible higher than expected low level cold air advection. However, model guidance is indicating a significant pressure difference of around 8 mb between Jacksonville and Key West which coincides with a Small Craft Advisory for our entire marine district. For now, will headline a Small Craft Advisory may be needed for Gulf waters, Hawk Channel and the Straits of Florida but retain 15 to 20 knots. Stay tuned to later marine forecasts. Thereafter, moderate east winds on Thursday afternoon and night will abate appreciably from Friday through most of this weekend.

AVIATION. VFR conditions to prevail at both island terminals through 12/06z, though vicinity showers could cause brief MVFR to IFR conditions mainly this morning and late tonight. Outside of low coverage showers, skies to remain scattered. Winds will be east to southeast today, turning northeast this evening. While winds are anticipated to remain below 10 knots, after 12/06z freshening is expected as a cold front approaches (and a possible short period of MVFR cigs).

CLIMATE. In 1934, the daily record low temperature of 50 degrees was recorded in Key West. Temperature records date back to 1872.

PRELIMINARY POINT TEMPS/POPS. Key West 83 75 82 74 / 20 20 20 10 Marathon 85 75 83 75 / 20 20 20 10

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

Public/Marine/Fire . APA Aviation/Nowcasts . WLC Data Collection . 99

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
PKYF1 - Peterson Key, FL 10 mi126 min 76°F
LONF1 - Long Key, FL 12 mi46 min 80°F 1020.8 hPa76°F
BOBF1 - Bob Allen, FL 16 mi126 min 76°F
LRKF1 - Little Rabbit Key, FL 16 mi186 min 76°F
WRBF1 - Whipray Basin, FL 19 mi126 min E 2.9 77°F
BNKF1 - Butternut Key, FL 21 mi126 min 75°F
JKYF1 - Johnson Key, FL 22 mi126 min 76°F
BKYF1 24 mi126 min 78°F
VCAF1 - 8723970 - Vaca Key, FL 25 mi66 min SSE 5.1 G 8 82°F 77°F1022 hPa (+1.9)
TBYF1 25 mi126 min 78°F
LMDF1 - Little Madeira, FL 26 mi126 min 77°F
MUKF1 - Murray Key, FL 26 mi126 min 76°F
GBTF1 - Garfield Bight, FL 27 mi126 min 78°F
SMKF1 - Sombrero Key, FL 27 mi46 min SE 8.9 G 11 80°F 75°F
DKKF1 - Duck Key, FL 28 mi186 min 75°F
BWSF1 - Blackwater Sound, FL 28 mi186 min 75°F
TRRF1 - Taylor River, FL 29 mi126 min 77°F
TCVF1 - Trout Cove, FL 29 mi186 min 77°F
JBYF1 30 mi126 min 78°F
LBSF1 - Little Blackwater, FL 31 mi186 min 76°F
THRF1 32 mi186 min 75°F
LSNF1 - Long Sound, FL 32 mi126 min 76°F
HCEF1 - Highway Creek, FL 33 mi126 min 78°F
WWEF1 34 mi186 min 75°F
LRIF1 36 mi126 min 76°F
MDKF1 36 mi126 min 77°F
CWAF1 39 mi186 min 75°F
NRRF1 40 mi126 min 75°F
SREF1 45 mi126 min 74°F
TPEF1 - Tarpon Bay East, FL 45 mi186 min 74°F
GBIF1 - Gunboat Island, FL 45 mi126 min 72°F
CANF1 - Cane Patch, FL 46 mi126 min 71°F
HREF1 48 mi126 min 73°F

Wind History for Vaca Key, FL
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
The Florida Keys - Marathon International Airport, FL22 mi73 minSE 510.00 miFair84°F75°F74%1021.6 hPa

Link to 5 minute data for KMTH

Wind History from MTH (wind in knots)
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Last 24hrSE8SE7SE8SE6SE7SE7SE7E6E4SE8E7SE8SE8SE7SE7SE6SE7SE6SE7SE7SE5SE6SE56
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2 days agoNE9NE8E10E6E8E8E7E7E7E8E7E6E9E5E6E6E4E5E6E4E5E9E8E7

Tide / Current Tables for Alligator Reef, Hawk 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 Long Key, east of drawbridge, Florida Current
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Long Key
Click for Map
Wed -- 01:33 AM EST     -1.59 knots Max Ebb
Wed -- 04:53 AM EST     0.00 knots Slack
Wed -- 06:15 AM EST     Moonset
Wed -- 06:57 AM EST     Sunrise
Wed -- 08:03 AM EST     1.54 knots Max Flood
Wed -- 11:33 AM EST     -0.00 knots Slack
Wed -- 02:15 PM EST     -1.27 knots Max Ebb
Wed -- 05:22 PM EST     Moonrise
Wed -- 05:26 PM EST     0.00 knots Slack
Wed -- 05:35 PM EST     Sunset
Wed -- 08:00 PM EST     1.00 knots Max Flood
Wed -- 10:56 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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-1.1-1.5-1.6-1.2-0.70.10.81.41.51.41.10.4-0.3-1-1.3-1.2-0.8-0.30.30.810.90.5-0

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 (11,2,3,4)
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Ground Weather Radar Station Miami, 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.