Friday, January17, 2020
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Marine Weather and Tides
Rotonda, 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 5:59PM Friday January 17, 2020 11:31 AM EST (16:31 UTC) Moonrise 12:24AMMoonset 12:25PM Illumination 51% Phase: Third Quarter Moon; Moon at 22 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- 1022 Am Est Fri Jan 17 2020
.small craft should exercise caution...
This afternoon..Northeast winds 15 to 20 knots then becoming east in the afternoon. Seas 2 to 3 feet. Bay and inland waters choppy.
Tonight..East winds 15 to 20 knots. Seas 2 to 4 feet. Bay and inland waters choppy.
Saturday..East winds 15 to 20 knots diminishing to 10 to 15 knots late in the morning, then then becoming southeast 5 to 10 knots in the afternoon. Seas 2 to 4 feet. Bay and inland waters choppy.
Saturday night..Southeast winds around 10 knots. Seas 2 feet. Bay and inland waters a light chop.
Sunday..South winds around 5 knots then becoming southwest late in the afternoon. Seas 2 feet. Bay and inland waters smooth. A slight chance of Thunderstorms.
Sunday night..Northwest winds around 5 knots then becoming north late in the evening, then increasing to around 10 knots after midnight. Seas 2 feet. Bay and inland waters a light chop. A chance of showers.
Monday..North winds 15 to 20 knots. Seas 2 to 4 feet. Bay and inland waters a moderate chop. A chance of showers.
Monday night..North winds around 20 knots. Seas 3 to 5 feet. Bay and inland waters choppy.
Tuesday..North winds around 20 knots. Seas 3 to 5 feet. Bay and inland waters choppy.
GMZ800 Synopsis For The Coastal Waters From Bonita Beach To Suwannee River- 1022 Am Est Fri Jan 17 2020
Synopsis..A back door cold front will push across the waters today with increasing east to northeast winds with advisory level conditions over the outer waters, and exercise caution conditions elsewhere. The gradient will weaken on Saturday night and Sunday with decreasing winds and seas. Another cold front will push across the waters Sunday night and Monday with canadian high pressure building over the region in the wake of the front...with advisory level conditions again possible on gusty north winds.


7 Day Forecast for Marine Location Near Rotonda, FL
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location: 26.74, -82.33     debug


Area Discussion for - Tampa Bay, FL
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FXUS62 KTBW 171405 AFDTBW

Area Forecast Discussion National Weather Service Tampa Bay Ruskin FL 905 AM EST Fri Jan 17 2020

DISCUSSION. A frontal boundary is draped across the south/central peninsula and will be settling south through the day as high pressure builds into the north. The high pressure will then shift east to over the Atlantic through the weekend, and continue to ridge back across the area. A cold front will then move into north Florida early Sunday morning, and gradually push through the area Sunday. Showers and a few thunderstorms will be possible as it moves through, then some colder air will move in for Tuesday and Wednesday mornings.

Temps for this afternoon are on track to reach into the mid 70s to around 80. Current forecast is on track and have no updates planned.

AVIATION. VFR conditions expected through much of the period, with some drier air expected to move into the area today as high pressure builds. NE winds this morning will become more easterly and increase and become gusty through the late morning and afternoon.

MARINE. Strong NE/E winds will keep the SCA in place for the offshore waters and SCEC for the near shore waters through Saturday morning as high pressure builds in from the north. The pressure gradient will then relax across the area allowing winds to subside for a bit. Then a cold front will move through the area Sunday/Sunday night, with winds and seas increasing to near SCA conditions behind the front for Sunday night/Monday. Current forecast is on track with all of this and have no major changes for the update.

Preliminary Point Temps/PoPs. TPA 79 61 78 63 / 0 0 0 10 FMY 80 61 78 62 / 0 0 0 0 GIF 77 60 76 60 / 0 0 0 0 SRQ 80 61 79 63 / 0 0 0 0 BKV 77 56 78 59 / 0 0 0 20 SPG 77 62 78 64 / 0 0 0 10

TBW WATCHES/WARNINGS/ADVISORIES. FL . None. Gulf waters . Small Craft Advisory until 10 AM EST Saturday for Waters from Bonita Beach to Englewood FL out 20 to 60 NM-Waters from Englewood to Tarpon Springs FL out 20 to 60 NM-Waters from Tarpon Springs to Suwannee River FL out 20 to 60 NM.



UPDATE/AVIATION/MARINE/FIRE WEATHER . 24/Hubbard UPPER AIR/DECISION SUPPORT . 74/Wynn


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
VENF1 - Venice, FL 24 mi31 min ENE 14 G 21 75°F 70°F1026.4 hPa (+0.7)62°F
FMRF1 - 8725520 - Fort Myers, FL 25 mi61 min NE 11 G 17 74°F 75°F1025.7 hPa
BGCF1 - Big Carlos Pass, FL 33 mi97 min NE 13 G 17 73°F 1026.1 hPa

Wind History for Naples, FL
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Punta Gorda, Charlotte County Airport, FL22 mi38 minENE 19 G 2510.00 miPartly Cloudy and Breezy78°F63°F60%1026.7 hPa
Venice Municipal Airport, FL24 mi36 minENE 14 G 259.00 miA Few Clouds79°F62°F58%1026.7 hPa

Link to 5 minute data for KPGD

Wind History from PGD (wind in knots)
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Last 24hrCalm5N6NE7NE6W7W7W3N5N5N8NE4NE3NE3NE4NE5NE5NE3NE5NE5NE4NE12NE14
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1 day agoSE8SE5CalmS5W4W7W7NW4NW5CalmN5N3NE3CalmNE3NE3CalmNE3CalmNE3NE3CalmCalmCalm
2 days agoS11SE9SE10E6------W6W4CalmE3NE3CalmE3E3E5NE3NE4NE3SE4E4E3SE6SE11

Tide / Current Tables for Port Boca Grande, Charlotte Harbor, Florida
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Port Boca Grande
Click for Map
Fri -- 12:23 AM EST     Moonrise
Fri -- 06:02 AM EST     0.88 feet High Tide
Fri -- 07:18 AM EST     Sunrise
Fri -- 08:00 AM EST     Last Quarter
Fri -- 11:04 AM EST     0.28 feet Low Tide
Fri -- 12:24 PM EST     Moonset
Fri -- 05:59 PM EST     Sunset
Fri -- 06:19 PM EST     1.33 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.20.30.40.60.70.80.90.80.70.50.30.30.30.50.70.91.11.21.31.31.10.90.60.3

Tide / Current Tables for Boca Grande Pass, Charlotte Harbor, Florida Current
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Boca Grande Pass
Click for Map
Fri -- 12:23 AM EST     Moonrise
Fri -- 01:42 AM EST     0.00 knots Slack
Fri -- 04:28 AM EST     1.36 knots Max Flood
Fri -- 07:18 AM EST     Sunrise
Fri -- 08:00 AM EST     Last Quarter
Fri -- 08:11 AM EST     -0.00 knots Slack
Fri -- 10:49 AM EST     -0.75 knots Max Ebb
Fri -- 12:24 PM EST     Moonset
Fri -- 12:51 PM EST     0.00 knots Slack
Fri -- 04:19 PM EST     2.14 knots Max Flood
Fri -- 05:59 PM EST     Sunset
Fri -- 07:54 PM EST     -0.00 knots Slack
Fri -- 11:46 PM EST     -1.96 knots Max Ebb
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-1.2-0.60.20.91.31.310.50.1-0.3-0.6-0.7-0.50.10.91.72.121.50.7-0.1-0.8-1.4-1.9

Weather Map
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wmap_A
GEOS 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.
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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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 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.