Friday, October20, 2017 L-36.com


Marine Weather and Tides
Layton, 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 7:22AMSunset 6:50PM Friday October 20, 2017 2:08 PM EDT (18:08 UTC) Moonrise 7:02AMMoonset 6:46PM Illumination 0% Phase: New Moon; Moon at 0 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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GMZ031 Florida Bay Including Barnes Sound, Blackwater Sound, And Buttonwood Sound- 1021 Am Edt Fri Oct 20 2017
.small craft should exercise caution for increasing winds...
.a small craft advisory may be required this evening...
This afternoon..Northeast to east winds near 15 knots early, increasing to 15 to 20 knots. Bay waters becoming choppy. Isolated showers.
Tonight and Saturday..East winds 15 to 20 knots. Bay waters choppy. Scattered showers and isolated Thunderstorms.
Saturday night and Sunday..East to southeast winds near 15 knots. Bay waters a moderate chop. Scattered showers and isolated Thunderstorms.
Sunday night..East to southeast winds near 15 knots. Bay waters a moderate chop. Scattered showers and isolated Thunderstorms.
Monday..East to southeast winds 10 to 15 knots. Bay waters a light to moderate chop. Scattered showers and isolated Thunderstorms.
Monday night..Southeast to south winds 10 to 15 knots. Bay waters a light to moderate chop. Scattered showers and isolated Thunderstorms.
Tuesday..Southwest winds near 10 knots. Bay waters a light chop. Scattered showers and isolated Thunderstorms.
Tuesday night..Northwest winds near 10 knots. Bay waters a light chop. Scattered showers and isolated Thunderstorms.

7 Day Forecast for Marine Location Near Layton, FL
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location: 24.8, -80.65     debug


Area Discussion for - Key West, FL
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Fxus62 kkey 201411
afdkey
area forecast discussion
national weather service key west fl
1011 am edt Fri oct 20 2017

Discussion In the middle and upper levels(700-200 mb), latest
available satelitte imagery overlaid with model streamline
analysis as of 900 am depict a NE to SW oriented positively
tilted middle and upper trough well east of nova scotia to
florida. Upstream of that, the axis of a longwave ridge is located
from upper michigan down through the central gulf of mexico. Water
vapor imagery delineated lots of dry air across florida and the
keys at the bottom of the departing trough.

At the surface and in the lower to middle levels, (surface to 700
mb), latest available satelitte imagery overlaid with marine and
land surface observations and analysis as of 900 am detail the
1028 mb center of a building surface high pressure system located
over the middle appalachians. The florida keys are along the
southern periphery of this anticyclone. As such, the 12z sounding
at key west illustrated a moderate northeast to east wind from
the surface to 700 mb with dry air above that and total pwat at
1.82 inches.

Currently As of 900 am, key west and miami radar and visibile
satellite imagery detects widely scattered showers across the
florida straits, with fast moving isolated showers impacting
portions of the upper and middle keys, but they are delivering
light amounts of rainfall, with several hundreths of an inch of
rainfall at most in those locations. Skies on balance over the
keys are mostly sunny, except mostly cloudy over the florida
straits. Temperatures over the islands are in the lower 80s with
dewpoints in the mid 70s.

Short term Rest of the day and the evening. Slow eastward
movement of the aforementioned surface high pressure system, will
result in a tightening pressure gradient, locally, with winds
mixing down through the rest of the morning, and fresh breezes
continuing through the afternoon and evening. Latest available
gfs and ECMWF forecast soundings are still not that dry and with
enough moisture below 700 mb, and columnar pwat between 1.50 and
1.75 inches. Hence, low level convergence will result in continued
development of fast moving ene to wsw moving isolated to widely
scattered low topped showers. The best chance of a lightning
strike would be over the florida straits. Rainfall amounts will be
very light with most locations receiving a trace. A few locations
could receive several hundreths of an inch of rainfall. Given the
scarcity and overall coverage of the showers, a minor update was
performed earlier just to adjust shower coverage to isolated and
take out the chance for lightning over the islands.

Marine A small craft advisory is now in effect for the florida
straits through at least Sunday morning. Scec headlines are in
place across the rest of the waters, but expect a SCA to be
issued this afternoon thru Sunday morning across the offshore
gulf waters 20 to 60 nm west of mainland monroe county, the
extreme SE gulf of mexico waters around rebecca shoal light and
the dry tortugas, all of hawk channel, and the florida straits.

Its still possible that an SCA will be needed across the
shallower landshadowed florida bay and nearshore gulf waters
inside the five fathom line. Scec conditions still likely Sunday
and Sunday night across most of the marine district before winds
and seas let down early next week.

Aviation Northeast to east breezes will continue to trend
upwards this afternoon. Expect breezy conditions with winds of 10
to 15 knots, with gusts of 20 to 25 knots.VFR conditions will
prevail. With that said, isolated to scattered fast moving showers
may deliver brief spells of subVFR conditions.

Key watches warnings advisories
Fl... None.

Gm... Small craft advisory this afternoon for gmz052>055- 072>075.

Public marine... Futterman
aviation nowcasts... .11
upper air data collection... ... Dr
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Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
PKYF1 - Peterson Key, FL 10 mi128 min 83°F
LRKF1 - Little Rabbit Key, FL 16 mi188 min 83°F
BOBF1 - Bob Allen, FL 16 mi128 min 83°F
MLRF1 - Molasses Reef, FL 21 mi68 min E 17 G 19 83°F 83°F1016.5 hPa (-0.4)
BNKF1 - Butternut Key, FL 21 mi128 min 83°F
JKYF1 - Johnson Key, FL 22 mi188 min 81°F
BKYF1 24 mi128 min 83°F
VCAF1 - 8723970 - Vaca Key, FL 25 mi50 min ENE 12 G 19 83°F 83°F1015.5 hPa
TBYF1 25 mi128 min 83°F
LMDF1 - Little Madeira, FL 26 mi128 min 85°F
GBTF1 - Garfield Bight, FL 27 mi128 min 81°F
DKKF1 - Duck Key, FL 28 mi188 min 82°F
BWSF1 - Blackwater Sound, FL 28 mi188 min 84°F
TRRF1 - Taylor River, FL 29 mi128 min 83°F
LBSF1 - Little Blackwater, FL 31 mi188 min 83°F
LSNF1 - Long Sound, FL 32 mi128 min 83°F
HCEF1 - Highway Creek, FL 33 mi188 min 82°F
WWEF1 34 mi188 min 83°F
LRIF1 36 mi128 min 83°F
CWAF1 39 mi188 min 82°F
NRRF1 40 mi128 min 82°F
TPEF1 - Tarpon Bay East, FL 45 mi188 min 81°F
SREF1 45 mi128 min 83°F
GBIF1 - Gunboat Island, FL 45 mi128 min 81°F
CANF1 - Cane Patch, FL 46 mi188 min 83°F
HREF1 48 mi128 min 82°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, FL22 mi75 minENE 15 G 2110.00 miMostly Cloudy86°F73°F65%1016 hPa

Wind History from MTH (wind in knots)
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Last 24hrNE10NE8NE7E6E6N8N9N11NE15NE7NE10E7NE8
G19
NE9NE9NE9NE8NE10NE10NE10NE10E10NE12E15
G21
1 day agoNE6SE64NE5NE7NE7NE7NE5E4E4NE4NE5NE6N7N7NE10NE9NE8NE8NE8NE9NE9NE7NE8
2 days agoE8E7E10E8E10E8E9E8E6E6E7E8E8E5SE6E5NE4NE11NE9SE6E7E8E5NE5

Tide / Current Tables for Alligator Reef, Hawk Channel, Florida
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Alligator Reef
Click for Map
Fri -- 03:27 AM EDT     0.31 feet Low Tide
Fri -- 07:23 AM EDT     Sunrise
Fri -- 08:01 AM EDT     Moonrise
Fri -- 09:51 AM EDT     2.74 feet High Tide
Fri -- 03:52 PM EDT     0.66 feet Low Tide
Fri -- 06:50 PM EDT     Sunset
Fri -- 07:46 PM EDT     Moonset
Fri -- 10:01 PM EDT     2.59 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.71.10.60.30.40.71.21.72.22.62.72.62.11.61.10.80.70.81.21.72.12.42.62.5

Tide / Current Tables for Long Key, east of drawbridge, Florida Current
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Long Key
Click for Map
Fri -- 12:28 AM EDT     -0.00 knots Slack
Fri -- 03:31 AM EDT     -1.57 knots Max Ebb
Fri -- 06:45 AM EDT     0.00 knots Slack
Fri -- 07:23 AM EDT     Sunrise
Fri -- 08:02 AM EDT     Moonrise
Fri -- 09:57 AM EDT     1.48 knots Max Flood
Fri -- 01:08 PM EDT     -0.00 knots Slack
Fri -- 04:00 PM EDT     -1.40 knots Max Ebb
Fri -- 06:51 PM EDT     Sunset
Fri -- 07:12 PM EDT     0.00 knots Slack
Fri -- 07:46 PM EDT     Moonset
Fri -- 10:00 PM EDT     1.12 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.4-0.4-1.1-1.5-1.5-1.2-0.60.20.91.41.51.30.90.1-0.7-1.2-1.4-1.2-0.8-0.20.511.11

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 (14,3,4,5)
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Ground Weather Radar Station Miami, 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.