Friday, September18, 2020
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Marine Weather and Tides
Alva, FL

Version 3.4
NOTICE
8/26/2020 The 7 day forecast is taking about 5 seconds to load but it will eventually load. NOAA is still working on it.
8/18/2020 NOAA continues to have trouble. Wind guest will occasionally be left off graphs. I am working with NOAA to resolve the issue.
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 7:14AMSunset 7:30PM Friday September 18, 2020 11:10 PM EDT (03:10 UTC) Moonrise 7:24AMMoonset 7:42PM Illumination 3% Phase: Waxing Crescent; Moon at 2 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- 828 Pm Edt Fri Sep 18 2020
Rest of tonight..Northwest winds around 10 knots then becoming northeast around 5 knots in the late evening and overnight. Bay and inland waters a light chop.
Saturday..North winds around 5 knots then becoming west around 10 knots in the afternoon. Bay and inland waters a light chop. Scattered Thunderstorms in the afternoon.
Saturday night..Northwest winds around 10 knots then becoming northeast in the late evening and overnight. Bay and inland waters a light chop. Isolated Thunderstorms in the evening.
Sunday..Northeast winds 5 to 10 knots increasing to around 15 knots in the afternoon. Bay and inland waters a moderate chop. Isolated Thunderstorms in the morning, then numerous Thunderstorms in the afternoon.
Sunday night..Northeast winds around 20 knots diminishing to 10 to 15 knots after midnight. Bay and inland waters choppy. Isolated Thunderstorms in the evening.
Monday..Northeast winds around 20 knots. Bay and inland waters choppy. Isolated Thunderstorms in the afternoon.
Monday night..Northeast winds around 20 knots diminishing to 10 to 15 knots in the late evening and overnight. Bay and inland waters choppy.
Tuesday..East winds around 15 knots. Bay and inland waters a moderate chop.
Tuesday night..East winds around 15 knots. Bay and inland waters a moderate chop.
Wednesday..East winds around 15 knots. Bay and inland waters a moderate chop. Isolated Thunderstorms in the afternoon.
GMZ800 Synopsis For The Coastal Waters From Bonita Beach To Suwannee River- 828 Pm Edt Fri Sep 18 2020
Synopsis..Light northwest through northeast winds around 8-12 knots and minimal rain chances expected overnight and on Saturday. The gradient tightens between strong high pressure to the north and tropical storm beta over the west gulf of mexico starting late Saturday. This will produce increasing northeast winds with scec or possibly sca conditions beginning Saturday night and continuing into next week. In addition to building seas with increasing winds, a long period westerly swell propagating from tropical storm beta can be expected into next week.


7 Day Forecast for Marine Location Near Alva, FL
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location: 26.97, -81.64     debug


Area Discussion for - Tampa Bay, FL
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FXUS62 KTBW 190026 AFDTBW

Area Forecast Discussion National Weather Service Tampa Bay Ruskin FL 826 PM EDT Fri Sep 18 2020

UPDATE. It has been a fairly quiet evening with sporadic showers and storms confined to southwest Florida with most of the other counties staying rain-free. Fair conditions will continue through the night with light winds expected. The trough that has been over the region will pull away to the east, allowing for some drier air and decreasing rain chances to settle over the region on Saturday. This is already evident in the 00Z evening sounding with a PWAT 1.96 inches, which is a half inch lower than 24 hours ago. Rain chances tomorrow will top out in the 20-40 percent range with seasonal daytime highs in the upper 80s. Made a minor tweak to POPs removing all mention of rain overnight to coincide with latest radar imagery and HRRR model guidance.

AVIATION. VFR conditions will prevail with light winds less than 10 knots through tomorrow morning. Onshore flow is expected Saturday afternoon with the west coast sea breeze remaining less than 10 knots. Scattered showers and storms are possible from 18-00Z so will hold VCTS at all terminals during that time. No other aviation impacts expected.

MARINE. Light northwest through northeast winds around 8-12 knots and minimal rain chances expected overnight and on Saturday. The gradient tightens between strong high pressure to the north and Tropical Storm Beta over the west Gulf of Mexico starting late Saturday. This will produce increasing northeast winds with SCEC or possibly SCA conditions beginning Saturday night and continuing into next week. In addition to building seas with increasing winds, a long period westerly swell propagating from Tropical Storm Beta can be expected into next week.

Preliminary Point Temps/PoPs. TPA 74 89 75 88 / 0 30 20 40 FMY 76 91 75 90 / 10 30 10 70 GIF 73 90 75 87 / 0 50 30 50 SRQ 74 89 75 90 / 10 20 20 50 BKV 72 89 73 86 / 0 40 20 30 SPG 76 89 75 89 / 0 20 20 40

TBW WATCHES/WARNINGS/ADVISORIES. FL . None. Gulf waters . None.



UPDATE/AVIATION/MARINE . 74/Wynn UPPER AIR/DECISION SUPPORT . 29/Delerme


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
FMRF1 - 8725520 - Fort Myers, FL 25 mi53 min WNW 5.1 G 6 82°F 86°F1013.5 hPa
BGCF1 - Big Carlos Pass, FL 41 mi77 min NNW 5.1 G 7 85°F
VENF1 - Venice, FL 44 mi71 min NW 7 G 7 83°F 85°F1013.1 hPa78°F
NPSF1 - 8725110 - Naples, FL 59 mi53 min NW 7 G 8.9 85°F 87°F1013.9 hPa

Wind History for Naples, FL
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Punta Gorda, Charlotte County Airport, FL19 mi78 minWNW 410.00 miFair82°F78°F88%1013.4 hPa

Link to 5 minute data for KPGD

Wind History from PGD (wind in knots)
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Last 24hrSW5S3S6S5S4S5S5SW3S3SW6SW9SW11SW11SW13W11W15W10W10W11NW6CalmNW6NW4NW6
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2 days agoE3E4SE5SE6SE5SE5SE4SE5SE9SE9S8SE10S10S11SW13SW10SW10S13SW11S8S5SW5S8S6

Tide / Current Tables for Shell Point, Peace River, Florida
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Shell Point
Click for Map
Fri -- 05:05 AM EDT     1.88 feet High Tide
Fri -- 07:14 AM EDT     Sunrise
Fri -- 08:25 AM EDT     Moonrise
Fri -- 11:43 AM EDT     0.51 feet Low Tide
Fri -- 05:24 PM EDT     2.30 feet High Tide
Fri -- 07:28 PM EDT     Sunset
Fri -- 08:43 PM EDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.40.611.41.71.91.81.61.310.80.60.50.71.21.622.32.32.11.81.51.10.8

Tide / Current Tables for Punta Gorda, Charlotte Harbor, Florida (2)
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Punta Gorda
Click for Map
Fri -- 04:19 AM EDT     1.72 feet High Tide
Fri -- 07:15 AM EDT     Sunrise
Fri -- 08:25 AM EDT     Moonrise
Fri -- 10:40 AM EDT     0.47 feet Low Tide
Fri -- 04:38 PM EDT     2.10 feet High Tide
Fri -- 07:28 PM EDT     Sunset
Fri -- 08:43 PM EDT     Moonset
Fri -- 11:19 PM EDT     0.57 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.50.81.21.51.71.71.51.310.70.50.50.711.41.82.12.11.91.71.410.70.6

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
Ground Weather Radar Station Tampa Bay Area, FL
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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.