Thursday, August17, 2017 L-36.com


Marine Weather and Tides
Charlotte Harbor, 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 7:00AMSunset 8:03PM Thursday August 17, 2017 7:38 AM EDT (11:38 UTC) Moonrise 1:42AMMoonset 3:34PM Illumination 23% Phase: Waning Crescent; Moon at 25 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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GMZ856 Coastal Waters From Bonita Beach To Englewood Fl Out 20 Nm- 323 Am Edt Thu Aug 17 2017
Today..East winds around 5 knots then becoming west around 10 knots in the afternoon. Seas 2 feet or less. Bay and inland waters a light chop. Isolated Thunderstorms in the afternoon.
Tonight..Northwest winds 5 to 10 knots then becoming east around 5 knots after midnight. Seas 2 feet or less. Bay and inland waters a light chop. Isolated Thunderstorms in the evening.
Friday..East winds around 5 knots then becoming west late in the afternoon. Seas 2 feet or less. Bay and inland waters smooth. Isolated Thunderstorms.
Friday night..Northwest winds around 5 knots then becoming east after midnight. Seas 2 feet or less. Bay and inland waters smooth. Isolated Thunderstorms in the evening.
Saturday..East winds around 10 knots then becoming north around 5 knots late in the afternoon. Seas 2 feet or less. Bay and inland waters a light chop. Isolated Thunderstorms.
Saturday night..Northeast winds around 10 knots then becoming east in the late evening and overnight. Seas 2 feet or less. Bay and inland waters a light chop. Scattered Thunderstorms.
Sunday..East winds around 10 knots. Seas 2 feet. Bay and inland waters a light chop. Numerous Thunderstorms.
Sunday night..East winds 5 to 10 knots increasing to around 15 knots after midnight. Seas 2 feet. Bay and inland waters a moderate chop. Numerous Thunderstorms in the evening, then isolated Thunderstorms after midnight.
Monday..East winds around 15 knots. Seas 2 to 3 feet. Bay and inland waters a moderate chop. Scattered Thunderstorms.
GMZ800 Synopsis For The Coastal Waters From Bonita Beach To Suwannee River- 323 Am Edt Thu Aug 17 2017
Synopsis.. Atlantic high pressure remains over the eastern gulf of mexico...with an axis near tampa bay...through the weekend with a relaxed pressure gradient. The ridge eases northward early next week. Typical widely scattered summer Thunderstorms can be anticipated each day...with the best potential for a passing storm during the late night and morning hours. Winds and seas will be higher near the storms.

7 Day Forecast for Marine Location Near Charlotte Harbor, FL
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location: 26.94, -82.06     debug


Area Discussion for - Tampa Bay, FL
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Fxus62 ktbw 170723
afdtbw
area forecast discussion
national weather service tampa bay ruskin fl
323 am edt Thu aug 17 2017

Short term
A fairly typical august day is expected across west-central
and SW florida on Thursday. The pressure gradient stays
relaxed with light low level flow dominated by afternoon sea
breeze circulation this afternoon. The sea breezes, deep
moisture and daytime heating will support scattered to
numerous showers and thunderstorms. The best coverage looks
to be across the interior where the gulf and atlantic
seabreezes look to collide.

Meanwhile, to our southeast a tutt will move through the
bahamas and into central cuba. The tutt will continue to
push westward towards the florida straits on Friday and move
into the gulf Saturday. Drier air in the mid-levels,
associated with the tutt, will move into the area on Friday.

This should help suppress some but still expecting sct
coverage. Temps Thursday and Friday will be hot, lower to
mid 90s, with heat indices above 100.

Long term
In the upper levels, a tutt low will be moving west out of
the florida straits through the end of the week and will
slowly cross the eastern gulf of mexico during the upcoming
weekend. As the tutt departs, mid level high pressure will
build in from the atlantic and hold through the middle of
next week.

At the surface, the subtropical ridge of high pressure over
the central portion of the florida peninsula during the
upcoming weekend will lift north through early next week,
and will hold north of the area through the end of the
period. With deep moisture remaining in place, the summer
pattern will continue with scattered to numerous
thunderstorms expected each afternoon. During the weekend,
light gradient flow will lead to widely scattered storms
possible throughout the afternoon and evening. As the ridge
lifts north early next week, stronger easterly flow will
lead to a more defined pattern, with storms developing over
the interior during the early afternoon, and building
towards the west coast through the late afternoon and early
evening. Storms will then shift offshore and dissipate
during the evening and overnight hours.

Aviation
PrevailingVFR. Light and variable winds continue overnight.

Winds will remain light into the afternoon. By late morning
and early afternoon, increasing clouds with vcnty tsra as
bay and sea breezes set up. Localized MVFR ifr possible
late in the period with thunderstorms. Vcts mentioned at all
taf sites in the afternoon through the evening.

Marine
Atlantic high pressure meanders across central fl and out
over the gulf of mexico for much of the weekend then lifts
into northern fl for the start of next week. The pressure
gradient remains relaxed with sea breeze circulations in the
afternoons. The main concern will be locally higher winds
and seas near thunderstorms.

Fire weather
No significant concerns through the forecast period with a
moist airmass keeping relative humidity remains above
critical levels and providing daily rain chances. Relaxed
high pressure over the region will result in light winds.

Preliminary point temps pops
Tpa 92 80 91 79 40 10 30 10
fmy 93 77 93 76 50 30 40 20
gif 95 76 94 75 60 20 50 20
srq 91 78 91 78 30 10 30 10
bkv 92 76 92 75 40 10 30 10
spg 91 81 90 79 30 20 30 10

Tbw watches warnings advisories
Fl... None.

Gulf waters... None.

Short term aviation marine fire weather... 11 mckaughan
mid term long term decision support... 18 fleming


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
VENF1 - Venice, FL 23 mi38 min ENE 4.1 G 5.1 79°F 89°F1018.5 hPa (+0.8)77°F
FMRF1 - 8725520 - Fort Myers, FL 23 mi50 min ESE 2.9 G 4.1 78°F 91°F1018 hPa
42013 - C10 - Navy-2 49 mi68 min ESE 5.8 G 9.7 89°F

Wind History for Naples, FL
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Punta Gorda, Charlotte County Airport, FL4 mi45 minENE 38.00 mi76°F75°F97%1018.9 hPa
Venice Municipal Airport, FL22 mi43 minENE 310.00 miFair79°F77°F94%1018.6 hPa

Wind History from PGD (wind in knots)
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Last 24hrCalmNE3NE5CalmCalmN4NW6--CalmW6CalmN4SE4SE4SE4S3CalmCalmSE3CalmE3E3CalmNE3
1 day agoCalmSE3CalmS4W5W7SW9SW10SW10SW10W8SW7W7CalmNW5CalmNW4CalmCalmCalmCalmCalmE4Calm
2 days agoSE3S4E3NW4SE5CalmCalmS8W5SW5SW7SW7S5S3SW3SE3CalmCalmS3CalmCalmCalmCalmS4

Tide / Current Tables for Punta Gorda, Charlotte Harbor, Florida
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Punta Gorda
Click for Map
Thu -- 02:41 AM EDT     Moonrise
Thu -- 02:44 AM EDT     1.26 feet High Tide
Thu -- 04:42 AM EDT     1.25 feet Low Tide
Thu -- 07:00 AM EDT     Sunrise
Thu -- 11:14 AM EDT     2.15 feet High Tide
Thu -- 04:33 PM EDT     Moonset
Thu -- 07:39 PM EDT     0.05 feet Low Tide
Thu -- 08:03 PM EDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.21.21.31.31.31.21.31.41.61.922.12.11.91.71.410.60.30.10.10.20.40.7

Tide / Current Tables for Boca Grande Pass, Charlotte Harbor, Florida Current
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Boca Grande Pass
Click for Map
Thu -- 02:30 AM EDT     0.08 knots Min Flood
Thu -- 02:43 AM EDT     Moonrise
Thu -- 07:01 AM EDT     Sunrise
Thu -- 07:07 AM EDT     1.80 knots Max Flood
Thu -- 10:32 AM EDT     -0.00 knots Slack
Thu -- 02:49 PM EDT     -2.79 knots Max Ebb
Thu -- 04:34 PM EDT     Moonset
Thu -- 06:41 PM EDT     0.00 knots Slack
Thu -- 08:03 PM EDT     Sunset
Thu -- 10:19 PM EDT     2.22 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
10.50.10.10.51.11.61.81.71.20.5-0.4-1.3-2.1-2.6-2.8-2.5-1.7-0.70.31.21.92.22.1

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 Tampa Bay, FL (7,2,3,4)
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Ground Weather Radar Station Tampa Bay Area, 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.