Wednesday, November14, 2018 L-36.com


Marine Weather and Tides
Treasure Island, FL

Version 3.4
What's New / NOTES
10/6/2018 Colors of tide XTide graphs changed to emphasize that they were upgraded. See next note. Comments welcome.
10/4/2018 I have fixed XTide and updated the harmonic files. There were some name changes so you might have to click EDIT to find the new station name.

Sunrise 6:51AMSunset 5:40PM Wednesday November 14, 2018 10:51 AM EST (15:51 UTC) Moonrise 12:38PMMoonset 11:41PM Illumination 40% Phase: Waxing Crescent; Moon at 6 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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GMZ830 Tampa Bay Waters- 1018 Am Est Wed Nov 14 2018
This afternoon..East winds around 10 knots then becoming southwest late in the afternoon. Bay and inland waters a light chop. A chance of showers and a slight chance of Thunderstorms.
Tonight..West winds around 10 knots then becoming northwest after midnight. Bay and inland waters a light chop. A chance of showers and a slight chance of Thunderstorms.
Thursday..Northwest winds around 15 knots. Bay and inland waters a moderate chop. A chance of showers and a slight chance of Thunderstorms.
Thursday night..North winds around 15 knots. Bay and inland waters a moderate chop.
Friday..North winds around 15 knots diminishing to 5 to 10 knots in the afternoon. Bay and inland waters a moderate chop.
Friday night..Northeast winds around 10 knots. Bay and inland waters a light chop.
Saturday..Northeast winds around 10 knots. Bay and inland waters a light chop.
Saturday night..Northeast winds around 10 knots. Bay and inland waters a light chop.
Sunday..Northeast winds around 10 knots. Bay and inland waters a light chop.
GMZ800 Synopsis For The Coastal Waters From Bonita Beach To Suwannee River- 1018 Am Est Wed Nov 14 2018
Synopsis..A cold front will move across the waters later tonight with showers and a few Thunderstorms along and ahead of it. Winds will shift to the northwest and north and increase toward small craft levels at times later tonight through Thursday as the front moves south through the waters. The front will move southeast of the waters Thursday night as high pressure builds in over the western gulf with diminishing winds and subsiding seas expected on Friday and continuing into the upcoming weekend.


7 Day Forecast for Marine Location Near Treasure Island, FL
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location: 27.77, -82.78     debug


Area Discussion for - Tampa Bay, FL
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Fxus62 ktbw 141450
afdtbw
area forecast discussion
national weather service tampa bay ruskin fl
950 am est Wed nov 14 2018

Update
Morning satellite imagery shows considerable low stratus
across western sections of the forecast area early this
morning along with some lingering patchy fog. As the
morning continues expect the low clouds and fog to mix out
with partly sunny skies developing by mid to late morning.

As for the rest of today expect the weak cold front across
the central peninsula to stall out as weak low pressure
develops on it over the eastern gulf later today, with this
low then tracking northeast across the northern peninsula
tonight bringing with it increasing rain chances to the
area. In the interim though increasing amounts of Sun later
this morning and into the afternoon will likely help to set
off some showers during the first half of the afternoon,
with higher rain chances expected across central and northern
zones during mid to late afternoon as the aforementioned
low develops and overall convergence increase across the
region. Will remove early morning fog wording in a mid
morning update, otherwise the rest of the forecast is on
track with no other changes planned at this time.

Aviation
Prevailing ifr lifr CIGS along with MVFR ifr vsbys will
should slowly improve into the MVFRVFR range after 16z
as the low clouds and fog dissipate. Additional brief
MVFR ifr conditions will be possible through the remainder
of the TAF forecast period as shra tsra gradually develop
over the region during the afternoon. Northeast to east
winds in the 5 to 7 knot range will become southwest at 7
to 10 knots after 18z, with winds shifting to the northwest
and north at 10 to 12 knots after 06z tonight.

Marine
Weak low pressure will develop over the eastern gulf along
a stalling front later today and tonight. East to southeast
winds in the 10 to 15 knot range with seas of 2 to 4 feet
will prevail over the waters the remainder of today with
increasing showers and storm chances during the afternoon.

Ongoing forecast covers this well, so no changes are expected
in the next update around 10 pm. A stronger cold front will
sweep southeast through the waters late tonight through
early Thursday with a period of small craft conditions
developing and lingering through Thursday night. Lighter
winds and seas will return to the waters on Friday and
into the upcoming weekend as surface high pressure builds
in over the area.

Tbw watches warnings advisories
Fl... None.

Gulf waters... None.

Update aviation marine... 57 mcmichael
upper air... 19 hurt
decision support... 24 hubbard


Weather Reporting Stations
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Wind History for St. Petersburg, FL
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Albert Whitted Airport, FL8 mi58 minE 1110.00 miOvercast76°F71°F85%1018.9 hPa
St. Petersburg/Clearwater Airport, FL11 mi58 minE 810.00 miOvercast74°F71°F91%1019.2 hPa
Macdill Air Force Base, Fl., FL15 mi1.9 hrsE 1110.00 miOvercast74°F69°F85%1019.3 hPa
Tampa, Tampa International Airport, FL19 mi58 minVar 610.00 miOvercast75°F69°F82%1019.5 hPa
Tampa, Peter O Knight Airport, FL20 mi56 minE 910.00 miOvercast0°F0°F%1019.6 hPa

Wind History from SPG (wind in knots)
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Last 24hrS7SW10SW10SW8SW10SW8SW5SW5W4W3CalmCalmCalmCalmCalmCalmE10NE14NE13E14E12E13E14E11
1 day agoSE8SE5S7SE5SW8SW7SW10SW7SW6SW4SW4SW4SW4SW4SW4SW3SE6SE9SE9S5SE9S10S8S6
2 days agoNE8NE8NE8NE5NE5NE5NE6N5NE7E16E17E17E15E16E13E13E11E10E11E11E10E10E7SE7

Tide / Current Tables for Johns Pass, Florida
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Johns Pass
Click for Map
Wed -- 02:35 AM EST     2.03 feet High Tide
Wed -- 06:51 AM EST     Sunrise
Wed -- 11:06 AM EST     0.23 feet Low Tide
Wed -- 12:38 PM EST     Moonrise
Wed -- 05:39 PM EST     Sunset
Wed -- 06:37 PM EST     1.52 feet High Tide
Wed -- 10:29 PM EST     1.45 feet Low Tide
Wed -- 11:41 PM EST     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.81.9221.91.71.41.10.80.50.30.20.30.50.711.21.41.51.51.51.51.51.5

Tide / Current Tables for Tampa Bay Entrance (Egmont Channel), Florida Current
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Tampa Bay Entrance (Egmont Channel)
Click for Map
Wed -- 02:51 AM EST     0.60 knots Max Flood
Wed -- 05:19 AM EST     -0.00 knots Slack
Wed -- 06:51 AM EST     Sunrise
Wed -- 09:16 AM EST     -1.27 knots Max Ebb
Wed -- 12:37 PM EST     Moonrise
Wed -- 01:41 PM EST     0.00 knots Slack
Wed -- 05:23 PM EST     1.09 knots Max Flood
Wed -- 05:39 PM EST     Sunset
Wed -- 10:12 PM EST     -0.00 knots Slack
Wed -- 11:35 PM EST     -0.13 knots Max Ebb
Wed -- 11:41 PM EST     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.20.40.50.60.50.1-0.3-0.8-1.1-1.3-1.2-1-0.7-0.30.10.60.91.11.10.90.60.30-0.1

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.
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Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Tampa Bay, FL (10,2,3,4)
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Ground Weather Radar Station Tampa Bay Area, 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.