Wednesday, January24, 2018 L-36.com


Marine Weather and Tides
Key Colony Beach, FL

Version 3.4
What's New / NOTES
6/25/2017 - NOAA is having a major issue that impact the 7 day forecast load times. Many users are reporting problems. The issue has been reported.
5/23/2017 - Worked with NOAA again to speed up the 7 day forecast load times. Thanks to them for being responsive.
5/19/2016 - There were issues with the 3 day airport observation history. I switched to another data source. Let me know if you see any issues with the data feeds.

Sunrise 7:10AMSunset 6:08PM Wednesday January 24, 2018 6:47 AM EST (11:47 UTC) Moonrise 12:02PMMoonset 12:00AM Illumination 52% Phase: First Quarter Moon; Moon at 8 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 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- 457 Am Est Wed Jan 24 2018
.small craft advisory will likely be required tonight...
Today..Northeast winds near 10 knots, increasing to 10 to 15 knots. Seas 2 to 4 feet. Isolated showers.
Tonight..Northeast winds increasing to 20 to 25 knots. Seas building to 4 to 7 feet. Scattered showers.
Thursday..Northeast winds 20 to 25 knots. Seas 6 to 10 feet. Isolated showers.
Thursday night..Northeast to east winds 25 to 30 knots. Seas 9 to 12 feet. Isolated showers.
Friday..East winds 25 to 30 knots. Seas 9 to 12 feet. Isolated showers.
Friday night..East winds 25 to 30 knots. Seas 9 to 12 feet. Isolated showers.
Saturday..East winds near 25 knots. Seas 9 to 11 feet. Isolated showers.
Saturday night..East to southeast winds 20 to 25 knots. Seas 9 to 11 feet, subsiding to 6 to 8 feet. Isolated showers.
Sunday..Southeast winds decreasing to 15 to 20 knots. Seas subsiding to 4 to 6 feet. Scattered showers.
Sunday night..Southeast winds 5 to 10 knots, becoming northwest. Seas 2 to 4 feet. Scattered showers.

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 240937
afdkey
area forecast discussion
national weather service key west fl
437 am est Wed jan 24 2018

Discussion
Currently - winds across most of the forecast area are light as an
atlantic ridge has retreated eastward, leaving a weak pressure
field across the area. With that said, another large high
pressure system is spreading southeastwards into the southeastern
united states and gulf of mexico. Winds have already increased to
near 15 knots on our deep gulf waters. The weaker north to
northeast breezes across nearby waters, soggy dew points near 70
and gulf side waters in the mid 60s has resulted in patchy fog and
widespread low ceilings, with the greatest concentrations over
portions of the lower and middle keys. In addition, ample lower
level moisture, little inhibition, along with weak confluence
across the florida straits has resulted in broken lines of weak
showers.

Forecast - high pressure will continue to spread southeastwards
today and tonight. This will result in a gradual increase of
northeast breezes, with a stronger increase beginning tonight.

The firming flow should both mix out morning fog and advect in
slightly drier air, however widespread low cloud cover will
likely linger. This is due to a swath of low level moisture,
associated with a dying cold front, sagging southward to stall
near the keys as lower level flow gradually veers more easterly.

Expect breezy conditions late tonight and windy conditions
beginning Thursday as the high shifts into the extreme
southeastern united states. Despite the increasing maritime
trajectory, the incoming airmass will be fairly cool, allowing
lows to settle to near normal and highs well below normal over the
next couple of days.

The windy easterly winds will rapidly weaken through the back half
of the weekend as the responsible high shifts eastwards into the
atlantic and away from the keys. Expect temperatures and moisture
to slip slightly above normal through this period. An organized
veering profile through the lower levels along with ample moisture
justifies low to mid chance pops beginning Sunday.

Available guidance suggests the next cold front will sweep
southeastwards through the florida keys Monday or Monday night.

This cold front will be accompanied by a decent lower level trough
and a set up for scattered showers and a band of prefrontal
showers. After the front moves through a period or two of breezy
to windy northeasterly flow will bring in cool conditions for a
day or so. Thereafter the progressive pattern will result in a
fairly rapid moderation as fresh winds quickly shift out of the
east.

Marine
Light amorphous winds will gradually strengthen today and tonight
as a high pressure spreads further into the southeastern united
states. High dew points and cool water temperatures have produced
areas of dense marine fog on keys gulf side waters. The fog should
lift and dissipate through the morning hours. Winds will veer
more easterly and strengthen further Thursday and Friday becoming
strong. Small craft advisories will likely be required for all
florida keys waters beginning tonight or Thursday. Winds will
rapidly decrease and shift southeast to south through the latter
portion of the weekend as the responsible high moves out into the
atlantic. This lull will only last a day or two before the next
cold front renews fresh to strong northeast flow across keys
waters.

Aviation
Lifr ifr CIGS and vis will persist at the eyw and mth terminals
through sunrise. Thereafter, vis will improve, followed by cigs.

Flight restrictions at both terminals are not expected shortly
after 15z. Northeast cross wind gusts of 20 to 25 knots will
impact both terminals after 25th 03z.

Climate
January 24th, on this date in key west climate history, in 2003, key
west experienced a very chilly day behind a powerful cold front,
with a high temperature of 56f and a low temperature of 45f, both
records for the date. January 2003 would finish as the third-coldest
january ever in key west. Temperature records in key west date back
to 1872.

Preliminary point temps pops
Key west 76 66 72 67 20 30 10 10
marathon 76 66 73 66 20 30 10 10

Key watches warnings advisories
Fl... None.

Gm... Dense fog advisory for gmz032>035.

Public marine fire... 11
aviation nowcasts... .Clr
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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 mi48 min NNE 7 G 8 69°F 71°F1018.1 hPa (+0.4)
LONF1 - Long Key, FL 16 mi48 min S 2.9 G 2.9 70°F 69°F1018.4 hPa (+0.6)70°F
PKYF1 - Peterson Key, FL 24 mi108 min 70°F
LRKF1 - Little Rabbit Key, FL 24 mi168 min 74°F
JKYF1 - Johnson Key, FL 27 mi168 min 74°F
WRBF1 - Whipray Basin, FL 32 mi168 min NNW 6 72°F
BKYF1 32 mi108 min 75°F
BOBF1 - Bob Allen, FL 32 mi108 min 70°F
GBTF1 - Garfield Bight, FL 36 mi108 min 76°F
TBYF1 37 mi108 min 76°F
WWEF1 38 mi168 min 72°F
KYWF1 - 8724580 - Key West, FL 39 mi48 min N 5.1 G 7 69°F 70°F1018.4 hPa (+0.5)
BNKF1 - Butternut Key, FL 41 mi108 min 70°F
LMDF1 - Little Madeira, FL 41 mi108 min 73°F
LRIF1 42 mi108 min 74°F
CWAF1 42 mi168 min 71°F
TRRF1 - Taylor River, FL 43 mi108 min 77°F
MLRF1 - Molasses Reef, FL 44 mi108 min NNE 8 G 8.9 72°F 74°F1018.4 hPa
SANF1 - Sand Key, FL 44 mi58 min 68°F 1019 hPa (+0.0)66°F
SREF1 45 mi108 min 68°F
NRRF1 45 mi108 min 74°F
DKKF1 - Duck Key, FL 46 mi168 min 71°F
TCVF1 - Trout Cove, FL 46 mi168 min 76°F
GBIF1 - Gunboat Island, FL 47 mi108 min 70°F
BWSF1 - Blackwater Sound, FL 48 mi168 min 72°F

Wind History for Vaca Key, FL
(wind in knots)    EDIT      (on/off)   Help
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E5
G10
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
The Florida Keys - Marathon International Airport, FL4 mi55 minNNE 52.00 miFog/Mist70°F68°F93%1018.3 hPa

Wind History from MTH (wind in knots)
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Last 24hrSE5SE3SE5SE6SE5SE4SE64SE53SE4SE3CalmCalmCalmNE3NE4NE3NE3NE4NE5N4N5N5
1 day agoE6E7E8SE7SE8SE7SE9SE6E9E95E6E7E7E6E4E5E6E5E5SE4SE6SE4SE5
2 days agoE9E10E7E8E7E8E9
G14
NE11NE10NE10NE8NE8NE8NE8NE9E8E9E8E7E5E6E5E5E6

Tide / Current Tables for Boot Key Harbor, Vaca Key, Florida
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Boot Key Harbor
Click for Map
Wed -- 01:25 AM EST     1.21 feet High Tide
Wed -- 07:09 AM EST     Sunrise
Wed -- 07:23 AM EST     0.25 feet Low Tide
Wed -- 12:01 PM EST     Moonrise
Wed -- 01:49 PM EST     1.51 feet High Tide
Wed -- 05:20 PM EST     First Quarter
Wed -- 06:03 PM EST     Sunset
Wed -- 08:48 PM EST     0.08 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.11.21.210.80.60.40.30.30.40.711.31.51.51.41.20.90.50.30.10.10.20.4

Tide / Current Tables for Moser Channel (swingbridge), Florida Current
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Moser Channel (swingbridge)
Click for Map
Wed -- 12:00 AM EST     Moonset
Wed -- 01:30 AM EST     1.27 knots Max Flood
Wed -- 04:55 AM EST     -0.00 knots Slack
Wed -- 07:09 AM EST     Sunrise
Wed -- 08:00 AM EST     -1.42 knots Max Ebb
Wed -- 11:24 AM EST     0.00 knots Slack
Wed -- 12:01 PM EST     Moonrise
Wed -- 01:48 PM EST     1.05 knots Max Flood
Wed -- 04:47 PM EST     -0.00 knots Slack
Wed -- 05:20 PM EST     First Quarter
Wed -- 06:04 PM EST     Sunset
Wed -- 08:25 PM EST     -1.78 knots Max Ebb
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.81.21.20.90.5-0-0.7-1.2-1.4-1.3-0.8-0.30.40.910.80.4-0.1-0.7-1.4-1.7-1.7-1.4-0.8

Weather Map and Satellite Images
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Weather Map
wmap_A
IR Satellite Image from GEOS
east_satellite

GOES Local Image of Southeast    EDIT
Geos

Wind Forecast for Key West, FL (6,6,7,8)
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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.