Thursday, April26, 2018 L-36.com


Marine Weather and Tides
Marathon, FL

Version 3.4
What's New / NOTES
3/3/2018 - There is a new GOES Satellite for the east coast that required rewriting that part of the code. Please report any issues.
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.

Sunrise 6:53AMSunset 7:55PM Thursday April 26, 2018 5:06 AM EDT (09:06 UTC) Moonrise 3:54PMMoonset 3:50AM Illumination 84% Phase: Waxing Gibbous; Moon at 11 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- 432 Am Edt Thu Apr 26 2018
Today..Northwest to north winds 5 to 10 knots, becoming variable near 5 knots. Seas around 1 foot. NEarshore waters smooth to a light chop.
Tonight..West winds 5 to 10 knots. Seas 1 foot or less. NEarshore waters smooth to a light chop.
Friday..Southwest to west winds near 10 knots. Seas around 1 foot. NEarshore waters a light chop. Scattered showers.
Friday night..West winds near 10 knots. Seas 1 to 2 feet. NEarshore waters a light chop. Scattered showers and isolated Thunderstorms.
Saturday..Northwest to north winds near 10 knots. Seas 1 to 2 feet. NEarshore waters a light chop. Scattered showers early.
Saturday night..North winds near 10 knots. Seas 1 to 2 feet. NEarshore waters a light chop. Isolated showers.
Sunday..North winds near 10 knots. Seas 1 to 2 feet. NEarshore waters a light chop. Isolated showers.
Sunday night..Northeast to east winds near 10 knots increasing to near 15 knots late. Seas 1 to 2 feet, building to 2 to 3 feet. NEarshore waters a light to moderate chop. Isolated showers.
Monday..East winds near 20 knots. Seas 3 to 5 feet. NEarshore waters rough. Isolated showers.
Monday night..East winds near 20 knots. Seas 3 to 5 feet. NEarshore waters 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 260840
afdkey
area forecast discussion
national weather service key west fl
440 am edt Thu apr 26 2018

Discussion
Currently
Under mostly clear skies and light northwest to north winds,
temperatures are averaging in the lower 70s across most of the
island chain. Meanwhile, local radars are detecting only isolated
showers on the distant waters beyond 40 nm south of the florida
keys. Surface wise, a trough of low pressure lies along the north
coast of the archipelago of cuba with a weak pressure pattern
covering most of the gulf of mexico and our region. On our marine
district, winds are northwest to north ranging from 10 knots at
carysfort reef light to calm at pulaski shoal light.

Short term (today through Saturday night)
an initial mid and upper level short wave trough in the southern
plains will migrate swiftly east southeastward and cross the
southeast united states tonight before lifting into the mid
atlantic region on Friday. Thereafter, another vigorous
disturbance aloft will dig equatorward and into the gulf of mexico
Friday night before departing into the atlantic ocean by Saturday
afternoon. With that, the former impulse along with its large
scale lift will remain well north of our region with a weak low
level flow across our region. However, subtle upglide along with a
leftover boundary in the straits of florida will provide gradual
moistening this afternoon and tonight, but only nickle pops will
be inserted for the island chain. For the latter system,
formidable mid and upper level ascent, the close proximity of the
right entrance jet region and increasing moisture will prompt
pops to be raised into the high chance category along with the
possibility of lightning storms over our entire area. Beyond that,
large scale sinking motion should provide drier air an decreasing
cloudiness by Saturday afternoon. Otherwise, high temperatures
will average in the lower to mid 80s with overnight lows in the
lower 70s due to radiational cooling tonight and possibly rain
cooled on Friday night.

Long term (Sunday through Wednesday)
the last in a series of mid and upper level disturbances within a
deep long wave trough over the entire eastern united states and
the sunshine state will exit into the western atlantic ocean by
Sunday night. In wake of this undulation, mid and upper level
ridging will allow a strengthening western atlantic surface ridge
to build into the southeast united states resulting in breezy to
wind conditions across our region. Despite subsidence above 850
mb, an increasing easterly flow will allow enough moisture flux to
prompt isolated dime pops through the period. High temperatures
will average in the mid 80s with overnight lows generally in the
mid 70s.

Marine
Light winds will persist on all keys coastal waters today through
Friday, before winds will likely be higher near increasing showers
and possible thunderstorms Friday night. Light to gentle winds
will prevail on our marine district this weekend, before fresh to
strong east winds overspread our coastal waters early next weekend
when a small craft advisory will be required.

Aviation
.Today,VFR CIGS and vis expected at both the keyw and kmth int'l
island terminals thru 24z. Light and variable winds.

Fire weather
No rainfall is anticipated in the big pine key area today and
tonight, while high temperatures climb into the mid 80s with
relative humidity values dropping to between 50 and 55 percent
this afternoon. Winds for most part will be mainly north near 5
mph before becoming variable this afternoon.

Climate
In 1983, the daily record low temperature of 64 degrees was last
recorded in key west. Temperature records date back to 1872.

Preliminary point temps pops
Key west 82 72 84 73 - - 30 50
marathon 84 72 85 73 - - 30 50

Key watches warnings advisories
Fl... None.

Gm... None.

Public marine fire... Apa
aviation nowcasts... .Futterman
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 mi48 min WNW 2.9 G 7 76°F 83°F1012.7 hPa
SMKF1 - Sombrero Key, FL 8 mi76 min NW 5.1 G 7 75°F 1012.8 hPa (-1.3)64°F
LONF1 - Long Key, FL 12 mi66 min NNW 4.1 G 5.1 75°F 83°F1013.2 hPa (-1.3)63°F
PKYF1 - Peterson Key, FL 20 mi66 min 83°F
42078 20 mi66 min 79°F1 ft
LRKF1 - Little Rabbit Key, FL 20 mi126 min 81°F
JKYF1 - Johnson Key, FL 23 mi126 min 82°F
BOBF1 - Bob Allen, FL 28 mi66 min 80°F
WRBF1 - Whipray Basin, FL 28 mi126 min W 8 80°F
BKYF1 29 mi66 min 77°F
GBTF1 - Garfield Bight, FL 33 mi66 min 79°F
TBYF1 34 mi66 min 80°F
WWEF1 35 mi126 min 82°F
LMDF1 - Little Madeira, FL 37 mi66 min 81°F
BNKF1 - Butternut Key, FL 37 mi66 min 81°F
TRRF1 - Taylor River, FL 39 mi66 min 84°F
CWAF1 39 mi126 min 82°F
LRIF1 39 mi66 min 82°F
MLRF1 - Molasses Reef, FL 40 mi66 min N 8 G 8.9 73°F 78°F1013.5 hPa (-1.4)
NRRF1 42 mi66 min 83°F
DKKF1 - Duck Key, FL 42 mi126 min 81°F
KYWF1 - 8724580 - Key West, FL 43 mi48 min N 2.9 G 6
TCVF1 - Trout Cove, FL 43 mi126 min 80°F
SREF1 43 mi66 min 82°F
BWSF1 - Blackwater Sound, FL 44 mi126 min 82°F
GBIF1 - Gunboat Island, FL 45 mi66 min 83°F
LSNF1 - Long Sound, FL 46 mi66 min 81°F
LBSF1 - Little Blackwater, FL 46 mi126 min 81°F
TPEF1 - Tarpon Bay East, FL 47 mi126 min 83°F
HCEF1 - Highway Creek, FL 48 mi126 min 82°F
HREF1 48 mi66 min 82°F
SANF1 - Sand Key, FL 49 mi76 min 74°F 1013.6 hPa (-1.3)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 mi73 minNNW 310.00 miOvercast76°F64°F67%1013.2 hPa

Wind History from MTH (wind in knots)
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Last 24hrNW9N8N7NE8NE9N7N7N5N5N6W6NW9NW6W7NW5W5NW4W4NW4NW3NW4N4NW3NW4
1 day agoS3CalmSW4SW4S6SW64SW6SW6SW6W11SW7W10W7W9W7NW6NW6W5SW8W6W7NW9NW8
2 days agoSE7SE7SE7SE9SE8
G14
S5S6S66S6S8S5S6S4SE6S6--S5S4S6S3S4S3SW3

Tide / Current Tables for Vaca Key-Fat Deer Key bridge, Florida
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Vaca Key-Fat Deer Key bridge
Click for Map
Thu -- 01:02 AM EDT     0.02 feet Low Tide
Thu -- 04:49 AM EDT     Moonset
Thu -- 06:52 AM EDT     Sunrise
Thu -- 07:17 AM EDT     1.37 feet High Tide
Thu -- 01:23 PM EDT     0.09 feet Low Tide
Thu -- 04:54 PM EDT     Moonrise
Thu -- 07:33 PM EDT     1.45 feet High Tide
Thu -- 07:51 PM EDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.100.10.40.711.21.41.31.20.90.50.20.10.10.30.611.21.41.41.310.6

Tide / Current Tables for Moser Channel (swingbridge), Florida Current
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Moser Channel (swingbridge)
Click for Map
Thu -- 01:16 AM EDT     -2.03 knots Max Ebb
Thu -- 04:27 AM EDT     0.00 knots Slack
Thu -- 04:49 AM EDT     Moonset
Thu -- 06:53 AM EDT     Sunrise
Thu -- 07:41 AM EDT     1.55 knots Max Flood
Thu -- 10:20 AM EDT     -0.00 knots Slack
Thu -- 01:40 PM EDT     -2.07 knots Max Ebb
Thu -- 04:48 PM EDT     0.00 knots Slack
Thu -- 04:54 PM EDT     Moonrise
Thu -- 07:52 PM EDT     Sunset
Thu -- 08:03 PM EDT     1.69 knots Max Flood
Thu -- 10:47 PM EDT     -0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
-1.7-2-1.9-1.3-0.40.51.11.51.51.20.3-0.7-1.5-2-2-1.6-0.80.211.51.71.50.8-0.2

Weather Map and Satellite Images
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wmap_A
GOES Local Image of    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.
target = "new">Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Key West, FL (5,6,7,8)
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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.