Sunday, January21, 2018 L-36.com


Marine Weather and Tides
Marathon, 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 6:06PM Sunday January 21, 2018 7:50 AM EST (12:50 UTC) Moonrise 10:08AMMoonset 10:09PM Illumination 23% Phase: Waxing Crescent; Moon at 5 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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GMZ043 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- 412 Am Est Sun Jan 21 2018
.small craft should exercise caution...
Today..East winds 15 to 20 knots. Seas 2 to 4 feet. NEarshore waters choppy.
Tonight and Monday..East to southeast winds 15 to 20 knots. Seas 2 to 4 feet. NEarshore waters choppy.
Monday night..East winds near 15 knots. Seas 2 to 3 feet. NEarshore waters a moderate chop. Isolated showers.
Tuesday..Northeast to east winds 10 to 15 knots. Seas around 2 feet. NEarshore waters a light to moderate chop. Isolated showers.
Tuesday night..Northeast winds 10 to 15 knots. Seas around 2 feet. NEarshore waters a light to moderate chop. Isolated showers.
Wednesday..Northeast winds 10 to 15 knots, increasing to 15 to 20 knots in the afternoon. Seas around 2 feet, building to 2 to 4 feet. NEarshore waters a light to moderate chop, becoming choppy. Isolated showers.
Wednesday night and Thursday..Northeast to east winds near 20 knots. Seas 3 to 4 feet. NEarshore waters rough. Isolated showers.
Thursday night..Northeast to east winds 20 to 25 knots. Seas 3 to 5 feet. NEarshore waters very rough. Isolated showers.

7 Day Forecast for Marine Location Near Marathon, FL
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location: 24.73, -81.03     debug


Area Discussion for - Key West, FL
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Fxus62 kkey 210711
afdkey
area forecast discussion
national weather service key west fl
211 am est Sun jan 21 2018

Discussion
Currently
Kbyx detects patchy, light rain over the western portion of the
florida straits. Elsewhere, kbyx detects no precipitation echoes
in the remainder of the forecast area. Skies over the island chain
are mostly cloudy. Winds over land are northeast to east at 10 to
15 mph. C-man winds, on average, are east near 15 knots, with
gusts near 20 knots. Temperatures are in the mid 60s.

Short term (today through Tuesday)
An atlantic ridge of high pressure will extend across the
southeastern united states today and tonight. This ridge of high
pressure will shift southward down the florida peninsula Monday
and Monday night, before retreating eastward Tuesday. Lack of an
apparent convective trigger will be responsible for no more than
dime pops in the short term portion of the forecast.

Long term (Tuesday night through Saturday)
A trough of low pressure may pass through the florida keys Tuesday
night or Wednesday. An area of high pressure will progress
eastward across the southeastern united states Wednesday night
through Friday. This area of high pressure should enter the
western atlantic ocean Friday night. An atlantic ridge of high
pressure will extend across the southeastern united states
Saturday. No more than slight chance pops are needed in the long
term portion of the forecast at this time.

Marine
Small craft are urged to exercise caution on the coastal waters of
the florida straits today due to sustained east surface winds of
15 to 20 knots. No advisories expected today. A small craft
advisory will likely be required for the coastal waters of the
florida straits tonight and Monday. A small craft advisory may be
required for the coastal waters of the gulf of mexico and hawk
channel tonight and Monday. A small craft advisory may be required
for the coastal waters of the florida straits Monday night. No
advisories expected Tuesday and Tuesday night. A small craft
advisory may be required for the coastal waters of the atlantic
Wednesday. A small craft advisory will likely be required for the
coastal waters of the gulf of mexico and atlantic Wednesday night.

A small craft advisory may be required for the coastal waters of
florida bay Wednesday night. A small craft advisory will likely be
required for all keys coastal waters Thursday and Thursday night.

Aviation
Vfr conditions will prevail at eyw and mth through at least the
next 24 hours. Sustained east winds near 20 knots expected from
just off the surface to about 3,000 feet.

Climate
On this date in florida keys weather history, in 1877, the high
temperature in key west was 86 degrees. This set the daily record
for maximum temperature measured in key west on january 21st, a
record which still stands 141 years later. Temperature records at
key west date back to 1872.

Preliminary point temps pops
Key west 75 67 78 69 0 0 0 10
marathon 76 67 79 69 0 0 0 10

Key watches warnings advisories
Fl... None.

Gm... None.

Public marine fire... Bs
aviation nowcasts... .Bs
data collection... ... Dr
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 4 mi50 min E 7 G 9.9 71°F 64°F1019.9 hPa (-0.0)
LONF1 - Long Key, FL 12 mi50 min E 9.9 68°F 63°F
PKYF1 - Peterson Key, FL 20 mi170 min 63°F
BOBF1 - Bob Allen, FL 28 mi170 min 63°F
BKYF1 29 mi170 min 65°F
GBTF1 - Garfield Bight, FL 33 mi170 min 64°F
TBYF1 34 mi170 min 64°F
BNKF1 - Butternut Key, FL 37 mi170 min 63°F
LMDF1 - Little Madeira, FL 37 mi170 min 65°F
TRRF1 - Taylor River, FL 39 mi170 min 66°F
LRIF1 39 mi170 min 64°F
MLRF1 - Molasses Reef, FL 40 mi50 min ESE 21 G 23 73°F 73°F1020.5 hPa (-0.0)
NRRF1 42 mi170 min 64°F
KYWF1 - 8724580 - Key West, FL 43 mi50 min ENE 2.9 G 6 67°F 64°F1019.6 hPa (-0.0)
SREF1 43 mi170 min 62°F
GBIF1 - Gunboat Island, FL 45 mi170 min 64°F
LSNF1 - Long Sound, FL 46 mi170 min 65°F
HREF1 48 mi170 min 65°F
SANF1 - Sand Key, FL 49 mi60 min 68°F 1020.3 hPa (-0.0)63°F

Wind History for Vaca Key, FL
(wind in knots)    EDIT      (on/off)   Help
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
The Florida Keys - Marathon International Airport, FL1 mi57 minE 910.00 miPartly Cloudy72°F63°F73%1020.2 hPa

Wind History from MTH (wind in knots)
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Last 24hrNE6N6NE9N8NE11NE10NE7NE9NE9NE10NE8NE8NE8N7NE9NE8NE8E7NE7NE5E4E7E6E9
1 day agoNE12NE11NE10NE12NE12NE9NE11NE9NE8NE10NE10NE9NE10NE9NE8NE8NE7NE6NE8NE7NE7NE6NE7N6
2 days agoN10
G22
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N12NE11NE10N13N10N9N9N8N11N9N13
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N9N11NE10N12NE11NE12NE12NE11

Tide / Current Tables for Vaca Key-Fat Deer Key bridge, Florida
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Vaca Key-Fat Deer Key bridge
Click for Map
Sun -- 05:38 AM EST     -0.10 feet Low Tide
Sun -- 07:09 AM EST     Sunrise
Sun -- 10:07 AM EST     Moonrise
Sun -- 11:37 AM EST     1.08 feet High Tide
Sun -- 05:28 PM EST     0.14 feet Low Tide
Sun -- 06:01 PM EST     Sunset
Sun -- 10:09 PM EST     Moonset
Sun -- 11:23 PM EST     1.34 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.31.10.80.40.1-0.1-0.10.10.30.60.91.11.110.80.50.30.20.20.30.60.91.21.3

Tide / Current Tables for Moser Channel (swingbridge), Florida Current
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Moser Channel (swingbridge)
Click for Map
Sun -- 01:51 AM EST     -0.00 knots Slack
Sun -- 05:17 AM EST     -1.99 knots Max Ebb
Sun -- 07:10 AM EST     Sunrise
Sun -- 08:41 AM EST     0.00 knots Slack
Sun -- 10:08 AM EST     Moonrise
Sun -- 11:20 AM EST     1.56 knots Max Flood
Sun -- 02:35 PM EST     -0.00 knots Slack
Sun -- 05:45 PM EST     -1.79 knots Max Ebb
Sun -- 06:01 PM EST     Sunset
Sun -- 09:07 PM EST     0.00 knots Slack
Sun -- 10:10 PM EST     Moonset
Sun -- 11:38 PM EST     1.35 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.10.6-0.1-0.9-1.6-2-1.9-1.4-0.60.31.11.51.510.4-0.3-1.1-1.6-1.8-1.5-0.9-0.10.71.2

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 (7,2,3,4)
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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.