Wednesday, August21, 2019 L-36.com


Marine Weather and Tides
Key Colony Beach, FL

Version 3.4
NOTICE
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 7:57PM Wednesday August 21, 2019 4:29 AM EDT (08:29 UTC) Moonrise 10:47PMMoonset 11:02AM Illumination 68% Phase: Waning Gibbous; Moon at 20 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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GMZ053 Expires:201908210830;;961363 Fzus52 Kkey 210229 Cwfkey Coastal Waters Forecast For The Florida Keys National Weather Service Key West Fl 1029 Pm Edt Tue Aug 20 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. Gmz052>055-072>075-210830- Straits Of Florida From Ocean Reef To Craig Key Out 20 Nm- Straits Of Florida From Craig Key To West End Of Seven Mile Bridge Out 20 Nm- Straits Of Florida From West End Of Seven Mile Bridge To South Of Halfmoon Shoal Out 20 Nm- Straits Of Florida From Halfmoon Shoal To 20 Nm West Of Dry Tortugas Out 20 Nm- Straits Of Florida From Ocean Reef To Craig Key 20 To 60 Nm Out- Straits Of Florida From Craig Key To West End Of Seven Mile Bridge 20 To 60 Nm Out- Straits Of Florida From West End Of Seven Mile Bridge To South Of Halfmoon Shoal 20 To 60 Nm Out- Straits Of Florida From Halfmoon Shoal To 20 Nm West Of Dry Tortugas 20 To 60 Nm Out- 1029 Pm Edt Tue Aug 20 2019
Overnight..East to southeast winds near 15 knots. Seas 3 to 4 feet. Numerous showers and scattered Thunderstorms.
Wednesday and Wednesday night..East winds 10 to 15 knots. Seas 2 to 4 feet. Scattered showers and Thunderstorms.
Thursday..Northeast to east winds 10 to 15 knots. Seas 2 to 4 feet. Scattered showers and Thunderstorms.
Thursday night..East winds 10 to 15 knots. Seas 2 to 3 feet. Scattered showers and Thunderstorms.
Friday..East winds near 10 knots. Seas 1 to 3 feet. Scattered showers and Thunderstorms.
Friday night..Southeast winds 10 to 15 knots. Seas 2 to 3 feet. Scattered showers and Thunderstorms.
Saturday..Southeast winds near 10 knots. Seas 1 to 2 feet. Scattered showers and Thunderstorms.
Saturday night and Sunday..Southeast to south winds 5 to 10 knots. Seas 1 to 2 feet. Scattered showers and Thunderstorms.
Sunday night..Southeast winds 5 to 10 knots. Seas 1 to 2 feet. Scattered showers and Thunderstorms.


7 Day Forecast for Marine Location Near Key Colony Beach, FL
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location: 24.7, -81.1     debug


Area Discussion for - Key West, FL
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Fxus62 kkey 210224
afdkey
area forecast discussion
national weather service key west fl
1024 pm edt Tue aug 20 2019

Discussion
Water vapor imagery highlights a weakness in the mid-upper level
ridging across the western north atlantic. The center of this
tutt-like feature is near bermuda and stretches southwest to
west-central cuba. The low-level subtropical ridge reaches west
across northern florida. Undulations in the easterlies along the
southern flank of the low-level ridge appear to be forming in-
situ within a region of favored ascent over the bahamas. The first
of these inverted troughs pushed west through the keys last
night, the second is forming southeast of andros.

Overall shower coverage has been limited since this afternoon, and
yet, one slow-moving complex dropped between two two three inches
across key west around 400 pm. Our office measured 5.6" after the
rains ended, although this total includes an earlier round of
heavy rains this morning. Nevertheless, this 12-hr total of 5.6"
is around the 10-year average recurrence interval. During this
afternoon's rains, radar estimated totals were about 50% of what
was realized in the gauges. Tropical rains of this variety are
possible overnight as the nocturnal southeasterly convergence
zone sets-up over the straits of florida. The most recent kbyx
scans highlight increasing coverage over the straits. We upped
rain chances to 60% based on the latest radar trends, well below
the nbm and ecs guidance. Other elements of the forecast are on
track.

Marine
A ridge axis will reach west across northern florida tonight
through Saturday night. Meanwhile, a weak trough axis will
approach the keys Thursday and press west through the islands
Thursday night. The ridge axis will sag south and recede to the
east Sunday and Sunday night as lower pressure unsettles the
central gulf of mexico

Aviation
Various boundaries are moving towards the island chain. Currently
showers and isolated thunderstorms are forming along these
boundaries and moving northwest. Will keep vcsh in the going
forecast as confidence is low on exact placement and impacts. This
activity could bring brief MVFR or even sub ifr conditions along
with gusty winds. Confidence is even lower regarding TS and will
omit from the TAF at this time. Otherwise, outside of any
convection, expectingVFR conditions with generally SE winds 10
knots or less.

Preliminary point temps pops
Key west 80 90 81 90 50 50 50 40
marathon 80 92 81 93 50 50 40 40

Key watches warnings advisories
Fl... None.

Gm... None.

Public marine fire... Clr
aviation nowcasts... .Liw
data collection... ... Dr
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Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
VCAF1 - 8723970 - Vaca Key, FL 1 mi60 min 82°F 88°F1016.9 hPa
SMKF1 - Sombrero Key, FL 5 mi40 min ESE 9.9 G 13 83°F 1017.1 hPa75°F
LONF1 - Long Key, FL 16 mi40 min 83°F 1016 hPa77°F
PKYF1 - Peterson Key, FL 24 mi90 min 87°F
LRKF1 - Little Rabbit Key, FL 24 mi150 min 86°F
JKYF1 - Johnson Key, FL 27 mi90 min 87°F
MUKF1 - Murray Key, FL 29 mi90 min 84°F
BKYF1 32 mi90 min 85°F
BOBF1 - Bob Allen, FL 32 mi90 min 87°F
WRBF1 - Whipray Basin, FL 32 mi90 min ESE 2.9 88°F
GBTF1 - Garfield Bight, FL 36 mi90 min 86°F
TBYF1 37 mi90 min 89°F
WWEF1 38 mi150 min 87°F
KYWF1 - 8724580 - Key West, FL 39 mi60 min 82°F 89°F1016.9 hPa
BNKF1 - Butternut Key, FL 41 mi90 min 87°F
LMDF1 - Little Madeira, FL 41 mi90 min 87°F
CWAF1 42 mi150 min 86°F
LRIF1 42 mi90 min 88°F
TRRF1 - Taylor River, FL 43 mi90 min 87°F
SANF1 - Sand Key, FL 44 mi40 min SE 12 G 14 83°F 1015.5 hPa76°F
NRRF1 45 mi90 min 87°F
SREF1 45 mi90 min 88°F
DKKF1 - Duck Key, FL 46 mi150 min 86°F
TCVF1 - Trout Cove, FL 46 mi150 min 87°F
JBYF1 47 mi90 min 88°F
GBIF1 - Gunboat Island, FL 47 mi90 min 87°F
BWSF1 - Blackwater Sound, FL 48 mi150 min 86°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, FL4 mi37 minESE 410.00 miFair83°F73°F72%1016.7 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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Boot Key Harbor
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Wed -- 12:56 AM EDT     1.88 feet High Tide
Wed -- 07:01 AM EDT     Sunrise
Wed -- 07:18 AM EDT     0.59 feet Low Tide
Wed -- 12:02 PM EDT     Moonset
Wed -- 01:20 PM EDT     1.68 feet High Tide
Wed -- 07:07 PM EDT     0.72 feet Low Tide
Wed -- 07:53 PM EDT     Sunset
Wed -- 11:47 PM EDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.81.91.81.51.20.90.70.60.60.811.31.51.71.61.51.210.80.70.80.91.21.4

Tide / Current Tables for Moser Channel (swingbridge), Florida Current
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Moser Channel (swingbridge)
Click for Map
Wed -- 12:44 AM EDT     1.19 knots Max Flood
Wed -- 03:41 AM EDT     -0.00 knots Slack
Wed -- 07:01 AM EDT     Sunrise
Wed -- 07:10 AM EDT     -1.71 knots Max Ebb
Wed -- 10:37 AM EDT     0.00 knots Slack
Wed -- 12:02 PM EDT     Moonset
Wed -- 01:13 PM EDT     1.29 knots Max Flood
Wed -- 04:31 PM EDT     -0.00 knots Slack
Wed -- 07:41 PM EDT     -1.43 knots Max Ebb
Wed -- 07:53 PM EDT     Sunset
Wed -- 11:05 PM EDT     0.00 knots Slack
Wed -- 11:47 PM EDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.11.20.90.4-0.2-0.8-1.4-1.7-1.6-1.1-0.50.30.91.31.20.80.3-0.3-0.9-1.3-1.4-1.1-0.7-0.1

Weather Map and Satellite Images
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wmap_A
GOES 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 (4,6,7,8)
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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.