Wednesday, January17, 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 7:11AMSunset 6:03PM Wednesday January 17, 2018 3:52 AM EST (08:52 UTC) Moonrise 7:29AMMoonset 6:39PM Illumination 0% Phase: New Moon; Moon at 1 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- 909 Pm Est Tue Jan 16 2018
.small craft advisory in effect...
Overnight..Northeast winds near 20 knots. Seas 5 to 7 feet. Isolated showers.
Wednesday..North winds near 20 knots. Seas 5 to 7 feet.
Wednesday night..North winds near 25 knots. Seas 5 to 8 feet, building to 6 to 9 feet.
Thursday..North to northeast winds near 20 knots, decreasing to 15 to 20 knots in the afternoon. Seas 6 to 9 feet, subsiding to 5 to 8 feet.
Thursday night..Northeast winds 15 to 20 knots. Seas 4 to 7 feet.
Friday..Northeast to east winds near 15 knots. Seas 3 to 5 feet.
Friday night..Northeast to east winds near 15 knots. Seas 3 to 5 feet.
Saturday..East winds near 15 knots. Seas 4 to 5 feet. Isolated showers.
Saturday night..East winds 15 to 20 knots. Seas 4 to 6 feet. Isolated showers.
Sunday..East winds near 20 knots. Seas 4 to 7 feet. Isolated showers.
Sunday night..East to southeast winds 15 to 20 knots. Seas 4 to 6 feet. 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 170243
afdkey
area forecast discussion
national weather service key west fl
943 pm est Tue jan 16 2018

Discussion
Kbyx doppler radar shows a large swatch of chaff north of the keys
island chain extending into southwest florida. Very weak echoes
continue to drift northward in the atlantic, mainly offshore from
the upper and middle keys. These echoes are elevated, and it is
unlikely that any precipitation is making it to the surface. If it
is, it is very light. And, the trend is for these echoes to wane
as they approach the island chain.

The evening local sounding showed the winds up to nearly 4000 feet
remained fresh from the northeast. Flow above that has
strengthened from the southwest west. Moisture remains low in a
relative sense, but there is a sense of increase in a layer from
4000 to 7000 feet nudging northward. Have already sent a zone
update to increase the cloud cover for the overnight period,
maintain just a slight chance of light showers, and trimmed our
northeasterly breezes to gentle to moderate.

Marine
Sent a coastal waters forecast update out a little early this
evening to account for lower winds being reported along and north
of the reef. The local hrrr suggests a wind surge over the next
hour or so, but even with this, the overall wind field for most
locations will be sustained below the small craft advisory
criteria, save for the straits. That headline has been preserved
through the early morning hours there, but an exercise caution for
small craft has replaced the advisory from the afternoon package
elsewhere.

Aviation
Vfr ceilings are expected through the overnight period. Winds will
be sustained moderately through tonight from the north northeast,
then freshen from the north with less overall cloud coverage
expected through the day on Wednesday at both the keyw and kmth
terminals.

Key watches warnings advisories
Fl... None.

Gm... Small craft advisory gmz052>055-072>075.

Public marine fire... 04
aviation nowcasts... .04
data collection... ... L. Kasper
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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 mi53 min NNE 13 G 14 65°F 66°F1021.1 hPa (-1.1)
LONF1 - Long Key, FL 12 mi53 min NNE 13 G 14 65°F 65°F1021.2 hPa (-1.5)58°F
PKYF1 - Peterson Key, FL 20 mi113 min 67°F
LRKF1 - Little Rabbit Key, FL 20 mi173 min 65°F
JKYF1 - Johnson Key, FL 23 mi173 min 66°F
BOBF1 - Bob Allen, FL 28 mi113 min 66°F
WRBF1 - Whipray Basin, FL 28 mi113 min NNW 13 66°F
BKYF1 29 mi113 min 66°F
GBTF1 - Garfield Bight, FL 33 mi113 min 66°F
TBYF1 34 mi113 min 66°F
WWEF1 35 mi173 min 66°F
BNKF1 - Butternut Key, FL 37 mi113 min 65°F
LMDF1 - Little Madeira, FL 37 mi113 min 67°F
TRRF1 - Taylor River, FL 39 mi113 min 68°F
LRIF1 39 mi113 min 67°F
CWAF1 39 mi173 min 65°F
MLRF1 - Molasses Reef, FL 40 mi53 min NNE 12 G 14 67°F 73°F1021.4 hPa (-1.6)
DKKF1 - Duck Key, FL 42 mi113 min 65°F
NRRF1 42 mi113 min 66°F
SREF1 43 mi113 min 65°F
TCVF1 - Trout Cove, FL 43 mi113 min 68°F
KYWF1 - 8724580 - Key West, FL 43 mi53 min NNE 6 G 12 65°F 67°F1021.5 hPa (-1.4)
BWSF1 - Blackwater Sound, FL 44 mi113 min 68°F
GBIF1 - Gunboat Island, FL 45 mi113 min 67°F
LBSF1 - Little Blackwater, FL 46 mi113 min 67°F
LSNF1 - Long Sound, FL 46 mi113 min 67°F
TPEF1 - Tarpon Bay East, FL 47 mi113 min 67°F
CANF1 - Cane Patch, FL 48 mi113 min 66°F
HCEF1 - Highway Creek, FL 48 mi113 min 68°F
HREF1 48 mi113 min 68°F
SANF1 - Sand Key, FL 49 mi63 min 66°F 1022.3 hPa (-1.5)56°F

Wind History for Vaca Key, FL
(wind in knots)    EDIT      (on/off)   Help
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N15
G19
N14
G17
N16
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N13
G19
NE17
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NE13
NE8
G11
NE7
G11
NE11
G14
NE11
G17
NE11
G14
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NE12
G15
NE11
NE11
G14
N9
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G17
NE15
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G17
NE13
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1 day
ago
N10
G15
N9
G14
N10
G16
N8
G15
N11
G15
N12
G16
N11
N6
G11
N8
G11
N6
G10
NW5
G8
NW5
G9
N4
G7
NW3
G8
N6
N7
G11
N9
G13
N5
G8
N15
NE18
NE14
G18
N15
G19
N11
G16
N11
G17
2 days
ago
N6
G15
N9
G14
N10
G16
N9
G13
N10
G16
N9
G13
N6
G13
N6
G13
N4
G9
NW13
G17
NW11
G18
NW9
G15
NW8
G18
NW7
G11
N7
G11
N12
G19
N11
G18
N13
G21
NE18
N12
G21
N16
N8
G15
N7
G10

Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
The Florida Keys - Marathon International Airport, FL1 mi60 minNNE 1010.00 miOvercast66°F57°F73%1021.3 hPa

Wind History from MTH (wind in knots)
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Last 24hrN11N12N12
G18
N10N12N11NE12
G19
NE10NE12NE11NE12NE14NE13NE12NE13NE14NE11NE10N8N11NE12NE12NE10NE10
1 day agoN10N12N12N10
G17
N10N9NE11N9N10N9N9NW7N8NW7N7N8N7N6N11N11
G20
N11
G20
N10N11N11
2 days agoN13N13
G20
N12
G20
N12
G20
N11N11
G18
N11
G18
N11N10N11NW10NW12
G19
NW13
G18
NW12
G19
NW13
G18
N12N13
G19
N11
G19
N14
G21
NE14NE15
G21
N12N12
G18
N11
G18

Tide / Current Tables for Vaca Key-Fat Deer Key bridge, Florida
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Vaca Key-Fat Deer Key bridge
Click for Map
Wed -- 03:29 AM EST     -0.21 feet Low Tide
Wed -- 07:10 AM EST     Sunrise
Wed -- 07:28 AM EST     Moonrise
Wed -- 09:23 AM EST     0.99 feet High Tide
Wed -- 02:44 PM EST     0.18 feet Low Tide
Wed -- 05:58 PM EST     Sunset
Wed -- 06:39 PM EST     Moonset
Wed -- 08:46 PM EST     1.67 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.70.3-0-0.2-0.2-00.30.60.8110.80.60.40.20.20.30.711.41.61.71.61.3

Tide / Current Tables for Moser Channel (swingbridge), Florida Current
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Moser Channel (swingbridge)
Click for Map
Wed -- 02:46 AM EST     -2.20 knots Max Ebb
Wed -- 06:10 AM EST     0.00 knots Slack
Wed -- 07:10 AM EST     Sunrise
Wed -- 07:28 AM EST     Moonrise
Wed -- 09:06 AM EST     1.76 knots Max Flood
Wed -- 12:28 PM EST     -0.00 knots Slack
Wed -- 03:23 PM EST     -1.74 knots Max Ebb
Wed -- 05:59 PM EST     Sunset
Wed -- 06:36 PM EST     0.00 knots Slack
Wed -- 06:40 PM EST     Moonset
Wed -- 09:00 PM EST     1.22 knots Max Flood
Wed -- 11:55 PM EST     -0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
-0.6-1.5-2.1-2.2-1.9-1.2-0.20.81.51.81.61.20.4-0.5-1.3-1.7-1.7-1.3-0.50.311.21.10.6

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 (3,6,7,8)
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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.