Tuesday, March31, 2020
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Marine Weather and Tides
Charlotte Harbor, FL

Version 3.4
NOTICE
12/16/2019 NOAA is having trouble with requests that include wind gusts. I am posting graphs without wind gusts until it gets fixed.
10/9/2019 Updated the Marine Zones.
9/4/2019 Fixed the weather maps due to NOAA moving them.
7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports.

Sunrise 7:17AMSunset 7:46PM Tuesday March 31, 2020 11:19 AM EDT (15:19 UTC) Moonrise 11:10AMMoonset 12:26AM Illumination 51% Phase: First Quarter Moon; Moon at 7 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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GMZ836 Charlotte Harbor And Pine Island Sound- 917 Am Edt Tue Mar 31 2020
.small craft exercise caution...
This afternoon..Southwest winds 15 to 20 knots. Bay and inland waters a moderate chop.
Tonight..West winds 15 to 20 knots. Bay and inland waters a moderate chop. A slight chance of Thunderstorms. A chance of showers in the late evening and overnight.
Wednesday..Northwest winds 15 to 20 knots. Bay and inland waters a moderate chop.
Wednesday night..North winds 15 to 20 knots then becoming northeast 5 to 10 knots after midnight. Bay and inland waters a moderate chop.
Thursday..Northeast winds around 10 knots then becoming northwest in the afternoon. Bay and inland waters a light chop.
Thursday night..North winds around 10 knots then becoming east after midnight. Bay and inland waters a light chop.
Friday..East winds around 10 knots then becoming southwest around 5 knots in the afternoon. Bay and inland waters a light chop.
Friday night..North winds around 5 knots then becoming east around 10 knots after midnight. Bay and inland waters a light chop.
Saturday..East winds around 10 knots then becoming south around 5 knots in the afternoon. Bay and inland waters a light chop.
GMZ800 Synopsis For The Coastal Waters From Bonita Beach To Suwannee River- 917 Am Edt Tue Mar 31 2020
Synopsis.. An approaching front will begin to tighten the pressure gradient today with south and southwest winds increasing into the exercise caution range by afternoon...but reaching advisory criteria north of tarpon springs. Showers and isolated Thunderstorms will accompany the front. Winds shift to west overnight then northwest Wed with advisory speed winds spreading southward. High pressure builds in late Wed then slides east...allowing winds to diminish and veer.


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 311308 AFDTBW

Area Forecast Discussion National Weather Service Tampa Bay Ruskin FL 908 AM EDT Tue Mar 31 2020

UPDATE. The day is starting off warm and muggy with increasing clouds ahead of a cold front that is expected to move through Florida later tonight into early Wednesday morning. Rain-free conditions and another warm day expected through the evening before rain showers move in late evening into early Wednesday. A stray storm is also possible in the vicinity of the cold front. No significant changes needed to the forecast at this time.

AVIATION. VFR conditions with gusty SW winds will prevail through the day ahead of a cold front expected to move through the region later tonight. Will hold VCSH starting at 00Z with SHRA and MVFR/IFR CIGs possible after 03Z as the front moves through the terminals. Some wind gusts near 20 knots possible in vicinity of front, then slightly decreasing and veering WNW as the front moves away from the region by the end of the period.

MARINE. An approaching front will begin to tighten the pressure gradient today with south and southwest winds increasing into the exercise caution range by afternoon . but reaching advisory criteria north of Tarpon Springs. Showers and isolated thunderstorms will accompany the front. Winds shift to west overnight then northwest Wed with advisory speed winds spreading southward. High pressure builds in late Wed then slides east . allowing winds to diminish and veer.

Preliminary Point Temps/PoPs. TPA 84 65 76 58 / 20 60 0 0 FMY 87 70 83 59 / 0 50 10 0 GIF 89 64 79 55 / 10 60 0 0 SRQ 84 69 77 59 / 10 60 0 0 BKV 87 60 77 52 / 20 60 0 0 SPG 83 69 76 60 / 20 60 0 0

TBW WATCHES/WARNINGS/ADVISORIES. FL . None. Gulf waters . Small Craft Advisory from 2 PM this afternoon to 5 AM EDT Wednesday for Coastal waters from Tarpon Springs to Suwannee River FL out 20 NM-Waters from Tarpon Springs to Suwannee River FL out 20 to 60 NM.



UPDATE/AVIATION/MARINE . 74/Wynn DECISION SUPPORT . 97/Flannery


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
FMRF1 - 8725520 - Fort Myers, FL 23 mi49 min Calm G 0 78°F 84°F1013.7 hPa
VENF1 - Venice, FL 23 mi19 min SSW 14 G 15 77°F 80°F1013.4 hPa (-0.3)73°F
BGCF1 - Big Carlos Pass, FL 38 mi85 min SW 12 G 14 79°F 1014.4 hPa
42013 - C10 - Navy-2 49 mi49 min SSW 14 G 16 76°F 76°F1013.5 hPa

Wind History for Naples, FL
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Punta Gorda, Charlotte County Airport, FL4 mi26 minWSW 1210.00 miPartly Cloudy82°F69°F65%1014 hPa
Venice Municipal Airport, FL22 mi24 minSW 128.00 miMostly Cloudy0°F0°F%1013.9 hPa

Link to 5 minute data for KPGD

Wind History from PGD (wind in knots)
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Tide / Current Tables for Punta Gorda, Charlotte Harbor, Florida
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Punta Gorda
Click for Map
Tue -- 01:26 AM EDT     Moonset
Tue -- 03:36 AM EDT     -0.11 feet Low Tide
Tue -- 07:19 AM EDT     Sunrise
Tue -- 12:10 PM EDT     Moonrise
Tue -- 07:45 PM EDT     Sunset
Tue -- 07:50 PM EDT     1.77 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.50.20-0.1-0.100.20.40.70.80.90.90.9111.11.31.41.61.71.81.71.51.2

Tide / Current Tables for Boca Grande Pass, Charlotte Harbor, Florida Current
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Boca Grande Pass
Click for Map
Tue -- 01:26 AM EDT     Moonset
Tue -- 02:18 AM EDT     0.00 knots Slack
Tue -- 05:32 AM EDT     1.75 knots Max Flood
Tue -- 07:20 AM EDT     Sunrise
Tue -- 12:11 PM EDT     Moonrise
Tue -- 12:21 PM EDT     0.67 knots Min Flood
Tue -- 04:04 PM EDT     1.42 knots Max Flood
Tue -- 06:43 PM EDT     -0.00 knots Slack
Tue -- 07:45 PM EDT     Sunset
Tue -- 10:55 PM EDT     -2.14 knots Max Ebb
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-1.7-1.1-0.30.61.31.71.71.51.21.10.90.80.70.70.91.21.41.20.6-0.3-1.1-1.7-2.1-2.1

Weather Map
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wmap_A
GEOS 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.
Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Tampa Bay, FL (11,2,3,4)
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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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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 numerous 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.