Tuesday, April24, 2018 L-36.com


Marine Weather and Tides
Marco Island, 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 7:56PM Tuesday April 24, 2018 8:49 PM EDT (00:49 UTC) Moonrise 1:57PMMoonset 2:27AM Illumination 72% Phase: Waxing Gibbous; Moon at 10 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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GMZ656 Coastal Waters From Chokoloskee To Bonita Beach Fl Out 20 Nm- Coastal Waters From East Cape Sable To Chokoloskee Fl Out 20 Nm- 403 Pm Edt Tue Apr 24 2018
Tonight..Northwest winds 5 to 10 knots nearshore and northwest 10 to 15 knots offshore. Seas around 2 feet. Period 3 seconds. Bay and inland waters a light chop. A chance of Thunderstorms in the evening. A chance of showers through the night.
Wednesday..West northwest winds 10 to 15 knots nearshore and northwest 5 to 10 knots offshore. Seas around 2 feet. Period 5 seconds. Bay and inland waters a light chop.
Wednesday night..Winds north northwest winds 5 to 10 knots. Seas around 2 feet. Period 5 seconds. Bay and inland waters light chop.
Thursday..Northwest winds 5 knots becoming west southwest in the afternoon. Seas less than 2 feet. Period 5 seconds. Bay and inland waters a light chop.
Thursday night..West winds 5 knots. Seas less than 2 feet. Bay and inland waters smooth. A slight chance of showers after midnight.
Friday..West southwest winds 5 to 10 knots. Seas less than 2 feet. Bay and inland waters a light chop. A chance of showers.
Friday night..West winds around 5 knots. Seas less than 2 feet. Bay and inland waters smooth. A chance of showers and Thunderstorms.
Saturday..Northwest winds 5 to 10 knots. Seas around 2 feet. Bay and inland waters a light chop. A chance of showers.
Saturday night..North winds 5 to 10 knots. Seas 2 to 3 feet. Bay and inland waters a light chop. A slight chance of showers.
Sunday..East northeast winds 5 to 10 knots. Seas 2 to 3 feet. Bay and inland waters a light chop.
GMZ600 Synopsis For Pascagoula Ms To Okaloosa Walton County Line Fl Out 60 Nm Including Major Area Bays And Sounds- 331 Pm Cdt Tue Apr 24 2018
Synopsis..A light to moderate west to northwest flow prevails over the area through Wednesday. A southwesterly flow develops Thursday ahead of an approaching cold front, then switches to a northerly flow Thursday night as the front moves through. North to northwest flow then continues into the weekend before shifting to easterly Sunday as high pressure builds to our northeast.

7 Day Forecast for Marine Location Near Marco Island, FL
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location: 25.97, -81.71     debug


Area Discussion for - Miami-South Florida, FL
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Fxus62 kmfl 250016
afdmfl
area forecast discussion
national weather service miami fl
816 pm edt Tue apr 24 2018

Aviation
A cold front will continue to gradually move across south florida
tonight. This front has been bringing shra and tsra to mainly
palm beach county. Models show maybe a few shra may affect other
areas overnight, but there is too much uncertainty to include at
this time. Behind the front, clearing skies, and a wind shift to
the nw.

Prev discussion issued 756 pm edt Tue apr 24 2018
update...

latest radar imagery shows most of the shower activity from
earlier this afternoon continuing to affect portion of palm
beach county and adjacent coastal waters. Frontal boundary is
slowly moving south across south florida, with most of the
coverage concentrated over palm beach county. Short term model
guidance suggests additional activity will be shifted east and
remain concentrated over the atlantic waters tonight. Expect a
northwest flow behind this boundary with drier air moving into the
area limiting any additional precipitation through Thursday.

Small changes were made to the pops for tonight to reflect less
chances inland as most of the activity remains offshore.

Prev discussion... Issued 406 pm edt Tue apr 24 2018
discussion...

upper level low traveling east northeast across the tn and oh
valleys will meander into the west atlantic waters tonight into
Wednesday. The frontal boundary associated with this broad upper
low stretches from gulf waters through palm beach and it is
currently enhancing scattered showers and thunderstorms across the
lake region and most of palm beach county. The combination of the
front and the abundant moisture ahead of it will provide
favorable conditions for the thunderstorms to continue over most
of the northeast and coastal areas through this evening, with some
of the storms could become strong. We are expected to remain in
the moist sector through this afternoon, with values well above
normal. 80-90kt upper level jet and vort MAX are expected to dip
far enough south to give upper level support to any development.

Potential for weak atlantic seabreeze development will also aide
surface convergence. Northeast parts of south florida could have
near-severe wind gusts and some hail, isolated in nature. Will
also have to monitor for a potential atlantic breeze development,
which would lead to backed winds, much enhanced shear and
potential for an isolated tornado. Lightning and heavy rain remain
the biggest threats, though strong wind gusts, hail, and
potential for waterspouts landspouts can't be ruled out given the
environment.

Tonight: upper level low weakens and merge into the larger trough
overnight, bringing its accompanying surface low up the east
coast. As the main axis of the upper trough moves east of the
state, it should drive the surface front south of the area,
leaving only a few lingering showers across the local atlantic
waters by daybreak Wednesday
Wednesday through the weekend: dry weather pattern filters in
behind the front for midweek. Highs temperatures will be in the
mid to upper 80s. Lower humidities will allow cooler overnight
lows ranging from the upper 50s over the interior and mid to upper
60s along the coasts through the end of the week. Larger east
coast trough is expected to continue to dominate the pattern into
the extended. Several shortwaves are expected to rotate around its
base through the northern gulf coast deep south, potentially
driving the development of another weak surface low and some
manner of front that slides down the fl peninsula this weekend.

Over south florida, we look to see a gradual increase in moisture
from south to north as the old frontal boundary drifts back into
the region. Expect the threat for showers to return to the
forecast, potentially lingering through most of the weekend
depending on the exact evolution of the features further to our
north.

Marine... Moderate south-southwest winds today as a frontal boundary
makes its way through the region, veering west-northwest by daybreak
behind the boundary. Expect west-northwest winds around 10kts to
linger into the upcoming weekend. Speeds will be light enough to
generally allow the atlantic seabreeze to develop near the coast
each afternoon, bringing winds out of the south-southeast.

Preliminary point temps pops
West palm beach 65 83 65 84 30 0 0 0
fort lauderdale 69 83 68 83 30 0 0 0
miami 69 84 67 85 30 10 0 0
naples 67 82 65 82 30 0 0 0

Mfl watches warnings advisories
Fl... None.

Am... None.

Gm... None.

Update... 67 mt
discussion... 67 mt
marine... 67 mt
aviation... 13


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
RKXF1 - Rookery Bay Reserve, FL 6 mi64 min 75°F 71°F
NPSF1 - 8725110 - Naples, FL 12 mi49 min 75°F 83°F1013.9 hPa (+0.3)
FMRF1 - 8725520 - Fort Myers, FL 48 mi49 min W 9.9 G 13 75°F 85°F1013.4 hPa (+0.6)

Wind History for Naples, FL
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Naples, Naples Municipal Airport, FL13 mi56 minNW 710.00 miMostly Cloudy76°F70°F82%1013.7 hPa

Wind History from APF (wind in knots)
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Last 24hrSW6S5SW5SW6SW6SW6SW6SW8SW8SW9SW9SW7SW9SW8SW10SW11SW12SW15
G19
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1 day agoE3E6E5E7E5SE5SE6SE5E5E6E6SE5SE4S8S12
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2 days agoE9
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SE6E8E9E9E8E6NE4NE7E6E6E8E7E7SE9E9SE8SW12SW14E14S9S8S9NE5

Tide / Current Tables for Marco, Big Marco River, Florida
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Marco
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Tue -- 03:27 AM EDT     Moonset
Tue -- 03:29 AM EDT     -0.16 feet Low Tide
Tue -- 06:55 AM EDT     Sunrise
Tue -- 10:44 AM EDT     1.85 feet High Tide
Tue -- 02:56 PM EDT     Moonrise
Tue -- 03:55 PM EDT     0.86 feet Low Tide
Tue -- 07:54 PM EDT     Sunset
Tue -- 09:59 PM EDT     1.94 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
10.60.1-0.1-0.10.10.511.31.61.81.81.71.51.20.90.911.21.51.71.91.91.9

Tide / Current Tables for Coon Key, Florida
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Coon Key
Click for Map
Tue -- 03:26 AM EDT     Moonset
Tue -- 03:59 AM EDT     0.24 feet Low Tide
Tue -- 06:55 AM EDT     Sunrise
Tue -- 10:46 AM EDT     2.94 feet High Tide
Tue -- 02:56 PM EDT     Moonrise
Tue -- 04:17 PM EDT     1.40 feet Low Tide
Tue -- 07:54 PM EDT     Sunset
Tue -- 10:00 PM EDT     2.87 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.71.20.70.40.20.40.81.322.52.92.92.72.41.91.61.41.51.72.12.52.82.92.8

Weather Map and Satellite Images
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wmap_A
GOES Local Image of Southeast    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 Miami-South Florida, FL (20,4,5,8)
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Ground Weather Radar Station Miami, FL
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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.