Saturday, July20, 2019 L-36.com


Marine Weather and Tides
Naples, FL

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6/2/2019. Many thanks to a user for reporting an error on one of the Edit pages. The switch to PHP 7.2 caused many pages that previously worked to quit working. I fixed many but I still depend on users to report ones I missed. Please report errors HERE or send an email to me at L-36.com. Allen

Sunrise 6:45AMSunset 8:21PM Saturday July 20, 2019 6:55 PM EDT (22:55 UTC) Moonrise 10:04PMMoonset 8:55AM Illumination 85% Phase: Waning Gibbous; Moon at 19 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- 330 Pm Edt Sat Jul 20 2019
Tonight..East winds 5 to 10 knots. Seas less than 2 feet. Period 2 seconds. Bay and inland waters a light chop. Slight chance of showers and Thunderstorms in the evening, then chance of showers and Thunderstorms after midnight.
Sunday..Southeast winds 5 to 10 knots. Seas less than 2 feet. Period 3 seconds. Bay and inland waters a light chop. Showers and Thunderstorms likely in the morning, then chance of showers and Thunderstorms in the afternoon.
Sunday night..East southeast winds around 5 knots nearshore and east southeast around 10 knots offshore. Seas less than 2 feet. Period 3 seconds. Bay and inland waters a light chop. Chance of showers and Thunderstorms.
Monday..East southeast winds 5 to 10 knots becoming south in the afternoon. Seas less than 2 feet. Period 2 seconds. Bay and inland waters a light chop. Chance of showers and Thunderstorms.
Monday night..NEarshore, south winds 5 knots. East southeast late in the evening. Offshore, north winds 5 to 10 knots. Seas less than 1 foot. Bay and inland waters smooth. Chance of showers and Thunderstorms.
Tuesday..East southeast winds 5 knots becoming southwest around 5 knots in the afternoon. Seas less than 1 foot. Bay and inland waters smooth. Chance of showers and Thunderstorms.
Tuesday night..Southwest winds 10 knots. Seas less than 2 feet. Bay and inland waters a light chop. Chance of showers and Thunderstorms.
Wednesday..West southwest winds 10 knots. Seas less than 2 feet. Bay and inland waters a light chop. Chance of showers and Thunderstorms.
Wednesday night..South southwest winds 10 knots nearshore and southwest 5 to 10 knots offshore. Seas less than 2 feet. Bay and inland waters a light chop. Slight chance of showers and Thunderstorms.
Thursday..Southwest winds around 5 knots. Seas less than 2 feet. Bay and inland waters smooth. Chance of showers and Thunderstorms.
GMZ600 Synopsis For Pascagoula Ms To Okaloosa Walton County Line Fl Out 60 Nm Including Major Area Bays And Sounds- 326 Pm Cdt Sat Jul 20 2019
Synopsis..High pressure will persist over the eastern and northern gulf through Monday night with a generally light onshore flow continuing into early next week. A cold front moves south toward the marine area Tuesday, with a light westerly and then northerly flow developing by midweek. Seas around 1 to 2 feet through the period.


7 Day Forecast for Marine Location Near Naples, FL
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location: 26.14, -81.79     debug


Area Discussion for - Miami-South Florida, FL
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Fxus62 kmfl 201934
afdmfl
area forecast discussion
national weather service miami fl
334 pm edt Sat jul 20 2019

Discussion
Ongoing convection across much of south florida is expected to
continue throughout the remainder of the afternoon and into the
evening hours as unsettled weather begins to take precedence.

Focus of most of the storms will be across the gulf coast and lake
okeechobee region, though the atlantic waters and east coast metro
are not in the clear, especially as an inverted trough pushes
into south florida from the bahamas. Main hazards for the
remainder of today will be gusty winds, frequent lightning, and
small hail. Overnight lows tonight are forecast to be in the upper
70s to near 80 along the east coast with low to mid 70s
elsewhere.

Things get spicy overnight tonight into tomorrow as the
aforementioned inverted trough creeps towards south florida. The
environment will still feature ample moisture (pws in the 2.00 to
2.50 inch range) with additional moisture reinforcements coming
with the trough. A parade of mid-level vort maxima (most evident
in the 500 mb levels) march across the west coast of south florida
overnight as well, further aiding in the instability. To add to
this already complex forecast are relatively cool 500 mb temps.

Gfs guidance suggest temps to waver in the -8c to -9c range from
now through Monday with slightly warmer temps advecting in
afterwards (-6c to -7c Monday afternoon through the remainder of
the forecast period). To put these temperatures into scope, the
average 500 mb temp for this time of year is around -7.4c.

With all of this in mind, higher rain chances will be possible
Saturday night into Sunday morning compared to south florida's
normal diurnally driven weather pattern. Scattered to numerous
storms are forecast Sunday afternoon and Sunday evening,
especially as the atmosphere heats up. Main hazards besides the
routine lightning, gusty winds, and heavy rainfall will be the
concern for possible minor localized flooding, particularly for
urban areas.

Taking a quick side note for two sentences -- models are showing
a very brief and shallow coverage of the saharan air layer (sal)
Sunday with surface concentration at only about 20-40 micrograms
per cubic meter. Essentially this will need to be monitored in
regards to the precipitation size spectrum and potentially
stronger updrafts.

For the beginning of next week, Monday looks to be the quietest
day weather wise. A ribbon of drier air (pw's around 1.50 inches)
drags across the region but this is short lived as an approaching
mid-level trough and associated surface boundary pushes into the
region from the north. The amplification of the mid-level trough
axis continues to reach into the northeastern gulf of mexico by
late Wednesday into early Thursday. As the trough sits to the
north and west of our area and the ridge retreats a bit back into
the atlantic, the rest of the week could see quite the unsettled
weather pattern with scattered to numerous showers and
thunderstorms outside of the diurnal sea breeze norms. Eventually
by the end of the extended forecast period, high pressure will
attempt to regain control, but until we reach that point in time,
the pattern will bear watching for the potential of excessive
rainfall and gusty winds.

Marine
While the overall pattern with the ridge of high pressure at the
surface will keep a generally light southeasterly flow across the
area most of the period, there will be periods of unsettled
weather this weekend into next week that mariners should maintain
awareness of. In particular, the passage of a trough late tonight
through Sunday and the approach of another trough early in the
week could cause an increase in storms over the waters. The main
concern with any storms remains gusty winds, lightning, and heavy
rain.

Beach forecast...

the persistent southeasterly flow will continue to permit a non-zero
rip current risk along the atlantic beaches of south florida through
the weekend and into next week. It is possible, particularly if the
passing troughs into early next week develop a bit stronger wind and
create surges of southeasterly to easterly flow that could enable a
moderate rip current risk at times along the atlantic beaches.

Aviation
Showers and thunderstorms are ongoing and continue to develop over
the interior and west coast. MVFR ifr conditions for vis and CIGS are
possible for kapf with the gulf sea breeze developing. For the
east coast TAF sites most of the activity has moved west of the
terminals however there is additional development in the atlantic
moving towards east coast. Have reintroduced vcsh fll and points
southward to account for development in the atlantic moving nw.

Southeast flow will prevail throughout along east coast.

Preliminary point temps pops
West palm beach 78 89 78 90 30 40 20 30
fort lauderdale 79 88 79 88 30 40 20 30
miami 78 89 79 90 40 40 20 30
naples 75 89 74 90 20 60 40 40

Mfl watches warnings advisories
Fl... None.

Am... None.

Gm... None.

Discussion... 03 fell
marine... 03 fell
beach... 03 fell
aviation... 33 kelly


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
NPSF1 - 8725110 - Naples, FL 1 mi55 min 80°F 87°F1016.2 hPa (-1.9)
RKXF1 - Rookery Bay Reserve, FL 8 mi70 min NE 2.9 79°F 1017 hPa77°F
BGCF1 - Big Carlos Pass, FL 19 mi61 min NNE 8 G 9.9 80°F 1017.2 hPa
FMRF1 - 8725520 - Fort Myers, FL 35 mi61 min SW 2.9 G 7 76°F 87°F1016.4 hPa
WPLF1 - Watson Place, FL 41 mi115 min 88°F
CNBF1 - Cannon Bay, FL 44 mi115 min 87°F

Wind History for Naples, FL
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure

Wind History from APF (wind in knots)
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Last 24hrN5NE3NE3--NE3SE12----------------NE3CalmCalm----SE8SE8SE8SW8W10
1 day agoSW9SW10SW9SE7CalmNE6E4CalmE4N3NE5NE4NE5E6E4NE4NE5E7E10E86SE7SW114
2 days agoW7W6W11SW7W5CalmCalmCalmE4E4NE6E4E4NE6NE4NE3NE4E6E9E8E8SE9E7W10
G17

Tide / Current Tables for Naples, Naples Bay, north end, Florida
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Naples
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Sat -- 04:02 AM EDT     2.70 feet High Tide
Sat -- 06:46 AM EDT     Sunrise
Sat -- 09:33 AM EDT     1.10 feet Low Tide
Sat -- 09:55 AM EDT     Moonset
Sat -- 03:21 PM EDT     3.00 feet High Tide
Sat -- 08:20 PM EDT     Sunset
Sat -- 10:19 PM EDT     0.16 feet Low Tide
Sat -- 11:03 PM EDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.71.42.12.52.72.62.21.81.41.11.11.41.82.32.732.92.62.11.50.90.40.20.2

Tide / Current Tables for Cocohatchee River, U.S. 41 bridge, Florida
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Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.


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.
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Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Miami-South Florida, FL (18,4,5,8)
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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.