Thursday, July18, 2019 L-36.com


Marine Weather and Tides
Key Colony Beach, FL

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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 6:47AMSunset 8:19PM Thursday July 18, 2019 4:49 AM EDT (08:49 UTC) Moonrise 8:46PMMoonset 7:10AM Illumination 98% Phase: Waning Gibbous; Moon at 16 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:201907181445;;241996 Fzus52 Kkey 180832 Cwfkey Coastal Waters Forecast For The Florida Keys National Weather Service Key West Fl 432 Am Edt Thu Jul 18 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>075-181445- 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- 432 Am Edt Thu Jul 18 2019
Today..East to southeast winds 10 to 15 knots. Seas 2 to 4 feet. Scattered showers and isolated Thunderstorms mainly in the morning.
Tonight through Friday night..East to southeast winds 10 to 15 knots. Seas 2 to 4 feet. Isolated showers and Thunderstorms.
Saturday..East to southeast winds near 10 knots. Seas 1 to 3 feet. Isolated showers and Thunderstorms.
Saturday night through Sunday night..East to southeast winds 10 to 15 knots. Seas 2 to 4 feet. Scattered showers and isolated Thunderstorms.
Monday and Monday night..East winds near 10 knots. Seas 1 to 3 feet. Isolated 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 180817
afdkey
area forecast discussion
national weather service key west fl
417 am edt Thu jul 18 2019

Discussion
Currently
Under partly cloudy skies and east to southeast winds of around 10
mph, temperatures are holding in lower to mid 80s in most island
communities. Meanwhile, local radars are detecting scattered
showers and isolated thunderstorms, with the majority of the cells
on the outer waters of mainland monroe and the straits of florida.

On our coastal waters, winds are east to southeast ranging from
8 knots at alligator reef light to 15 knots at smith shoal light.

Short term (today through Saturday night)
little change in overall large scale pattern with a deep
tropospheric high pressure cell holding firm over the florida
peninsula and the adjacent atlantic and gulf waters. With this,
large scale subsidence will prevail but with a few patches of
higher moisture below 700 mb migrating westward and across our
region. Hence, 20 to 30 percent 12 hour pops which coincide with
ecs mav seems fine. Plenty of resplendent and strong insolation
will result in high temperatures in the lower 90s and low
temperatures generally in the lower 80s.

Long term (Sunday through Wednesday)
the aforementioned (2nd paragraph) and tenacious area of high
pressure will slowly settle southeastward into extreme south
florida, our region and the bahamas by the middle of next week.

Because of the retreating of the anticyclone, the wet convective
cell steering flow will transition from westward to northward.

Once the steering flow changes, the cuban shadow should keep most
of the daytime hours rain free, but cells outflow boundaries may
at least threaten our area during the evening and early nighttime
hours. Furthermore, there are no pronounced low level
perturbations or tutt cells evident during this forecast period.

Subsequently, 20 to 30 percent pops will be retained. See no
reason to stray from high temperatures in the lower 90s and
overnight lows in the lower 80s.

Marine
Gentle to moderate east to southeast winds will prevail on all
keys coastal waters for the balance of this week, before
slackening into the light to gentle range by the end of this
weekend and early next week.

Aviation
Vfr conditions will prevail at both terminals. Expect vcsh at eyw,
possibly through late morning. Passing light showers could develop
and affect eyw with a brief MVFR ceiling. Confidence for mth to
remain convection free with both terminal having E to SE winds near
10 knots. Meanwhile, eyw could see gusts near 15 knots through at
least 19 00z.

Climate
In 1987, the daily record low temperature of 71 degrees was last
recorded in key west. Temperature records date back to 1872.

Preliminary point temps pops
Key west 91 84 91 84 30 20 20 30
marathon 93 85 93 85 30 20 20 20

Key watches warnings advisories
Fl... None.

Gm... None.

Public marine fire... Apa
aviation nowcasts... .Chesser
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 TempWater Temp WavesPressureDewPt
VCAF1 - 8723970 - Vaca Key, FL 1 mi49 min 84°F 88°F1017.5 hPa (-1.2)
SMKF1 - Sombrero Key, FL 5 mi29 min E 12 G 14 85°F 1017.4 hPa77°F
LONF1 - Long Key, FL 16 mi29 min 85°F 1016.8 hPa78°F
PKYF1 - Peterson Key, FL 24 mi169 min 87°F
JKYF1 - Johnson Key, FL 27 mi169 min 87°F
MUKF1 - Murray Key, FL 29 mi169 min 86°F
BKYF1 32 mi169 min 89°F
BOBF1 - Bob Allen, FL 32 mi169 min 88°F
WRBF1 - Whipray Basin, FL 32 mi169 min NE 8 88°F
GBTF1 - Garfield Bight, FL 36 mi169 min 89°F
TBYF1 37 mi169 min 91°F
WWEF1 38 mi169 min 89°F
KYWF1 - 8724580 - Key West, FL 39 mi55 min 84°F 89°F1017.3 hPa
BNKF1 - Butternut Key, FL 41 mi169 min 88°F
LMDF1 - Little Madeira, FL 41 mi169 min 89°F
CWAF1 42 mi169 min 87°F
LRIF1 42 mi169 min 88°F
TRRF1 - Taylor River, FL 43 mi169 min 91°F
SANF1 - Sand Key, FL 44 mi29 min ESE 15 G 17 84°F 1015.9 hPa78°F
NRRF1 45 mi169 min 88°F
SREF1 45 mi169 min 88°F
JBYF1 47 mi169 min 90°F
GBIF1 - Gunboat Island, FL 47 mi169 min 87°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 mi56 minE 410.00 miMostly Cloudy84°F75°F77%1017.3 hPa

Wind History from MTH (wind in knots)
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Last 24hrE8E6E5E5E74SE7SE7SE8SE6SE7SE6SE6SE7SE7E5E6NE7E8E6E7E6E6E4
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Tide / Current Tables for Boot Key Harbor, Vaca Key, Florida
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Boot Key Harbor
Click for Map
Thu -- 03:56 AM EDT     0.55 feet Low Tide
Thu -- 06:45 AM EDT     Sunrise
Thu -- 08:10 AM EDT     Moonset
Thu -- 10:13 AM EDT     2.23 feet High Tide
Thu -- 05:24 PM EDT     -0.12 feet Low Tide
Thu -- 08:15 PM EDT     Sunset
Thu -- 09:46 PM EDT     Moonrise
Thu -- 11:30 PM EDT     1.30 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.210.80.60.50.70.91.31.82.12.22.21.91.510.50.1-0.1-0.10.10.50.81.11.3

Tide / Current Tables for Moser Channel (swingbridge), Florida Current
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Moser Channel (swingbridge)
Click for Map
Thu -- 01:50 AM EDT     -0.00 knots Slack
Thu -- 04:47 AM EDT     -1.68 knots Max Ebb
Thu -- 06:46 AM EDT     Sunrise
Thu -- 07:57 AM EDT     0.00 knots Slack
Thu -- 08:10 AM EDT     Moonset
Thu -- 10:24 AM EDT     1.15 knots Max Flood
Thu -- 01:19 PM EDT     -0.00 knots Slack
Thu -- 04:43 PM EDT     -2.13 knots Max Ebb
Thu -- 08:10 PM EDT     0.00 knots Slack
Thu -- 08:15 PM EDT     Sunset
Thu -- 09:46 PM EDT     Moonrise
Thu -- 11:00 PM EDT     1.63 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.40.8-0.2-1-1.6-1.7-1.4-0.800.81.11.10.80.2-0.6-1.4-2-2.1-1.8-1.1-0.20.81.41.6

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.
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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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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.