Tuesday, July14, 2020
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Marine Weather and Tides
Sanibel, 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 6:43AMSunset 8:24PM Tuesday July 14, 2020 12:30 AM EDT (04:30 UTC) Moonrise 1:00AMMoonset 2:05PM Illumination 37% Phase: Third Quarter Moon; Moon at 23 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- 827 Pm Edt Mon Jul 13 2020
Rest of tonight..West winds around 10 knots. Seas 2 feet. Bay and inland waters a light chop.
Tuesday..West winds around 10 knots. Seas 2 feet. Bay and inland waters a light chop. Isolated Thunderstorms in the morning.
Tuesday night..Northwest winds around 5 knots. Seas 2 feet or less. Bay and inland waters smooth.
Wednesday..Northwest winds around 5 knots. Seas 2 feet or less. Bay and inland waters smooth. Isolated Thunderstorms in the afternoon.
Wednesday night..North winds around 10 knots. Seas 2 feet or less. Bay and inland waters a light chop. Isolated Thunderstorms after midnight.
Thursday..North winds around 10 knots. Seas 2 feet or less. Bay and inland waters a light chop. Isolated Thunderstorms in the morning, then scattered Thunderstorms in the afternoon.
Thursday night..North winds 5 to 10 knots then becoming east late in the evening, then increasing to around 15 knots after midnight. Seas 2 feet. Bay and inland waters a moderate chop. Scattered Thunderstorms.
Friday..East winds around 15 knots diminishing to 5 to 10 knots in the late morning and afternoon. Seas 2 feet. Bay and inland waters a moderate chop. Scattered Thunderstorms in the morning, then numerous Thunderstorms in the afternoon.
Friday night..East winds around 15 knots. Seas 2 feet. Bay and inland waters a moderate chop. Scattered Thunderstorms.
Saturday..East winds around 10 knots. Seas 2 feet. Bay and inland waters a light chop. Scattered Thunderstorms in the morning, then numerous Thunderstorms in the afternoon.
GMZ800 Synopsis For The Coastal Waters From Bonita Beach To Suwannee River- 827 Pm Edt Mon Jul 13 2020
Synopsis..High pressure over south florida remains in place through the period. Westerly winds will push showers and Thunderstorms across the waters during the early morning hours. By Wednesday, relatively light winds return with onshore sea breeze in the afternoon, as high pressure begins to move north. The rest of the week and through the weekend, easterly flow will bring showers and storms over the waters by late evening through the overnight hours. No headlines are anticipated through the period. The main threat will be associated with showers and Thunderstorms that will be capable of producing frequent lightning, locally gusty winds, and rough seas.


7 Day Forecast for Marine Location Near Sanibel, FL
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location: 26.43, -82.09     debug


Area Discussion for - Tampa Bay, FL
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FXUS62 KTBW 140026 AFDTBW

Area Forecast Discussion National Weather Service Tampa Bay Ruskin FL 826 PM EDT Mon Jul 13 2020

UPDATE. Westerly flow continues over the region as mean layer moisture increases, seen in 00Z TBW sounding with PWATs up to 1.76 inches. Afternoon convection has already waned with clearing skies. Latest guidance continues to suggest E Gulf showers to redevelop overnight and move into coastal areas into Tuesday morning which is typical for light westerly flow. Latest grids and forecasts on track.

AVIATION. Light westerly flow and VFR conditions expected rest of this evening and tonight with redevelopment of E Gulf convection possible overnight towards 12Z.

Prev Discussion. /issued 239 PM EDT Mon Jul 13 2020/

SHORT TERM (TDY-WED) . An upper level trough expanding across the US East Coast will move offshore and to the northeast through early Tuesday. Meanwhile at the surface, a high pressure remains in place over south Florida with prevailing west to southwest flow across the central and southwestern part of the state. Showers and thunderstorms are expected to continue to develop over the water and some could make it inland through the early evening hours, however the dry airmass that moved into our area earlier today will limit how much precip we will get over land. The aforementioned area of dry air will make its way south and dissipate overnight, which will limit the showers activity, especially south of Charlotte County during this time. Warm and humid conditions remain overnight with lows staying in the mid to upper 70s.

The moisture increase will support more showers and thunderstorms through Tuesday and westerly flow will push storms from the coast inland in the morning and then additional showers and thunderstorms will develop across interior locations by the afternoon.

On Wednesday, the surface high pressure begins to move north and expand over the southeast bringing relatively light winds and higher rainfall chances over the interior as west and east sea breeze collide over our eastern counties. Highs will be in the mid to upper 90s through the period with heat indices staying in the triple digits, especially Wednesday afternoon.

LONG TERM (THU-SUN) . As surface high continues to build across the southeast, and on Thursday we begin to transition into a more easterly flow across the Sunshine State. Convection chances and coverage is expected to increase across most of the area.

There is a chance that another area of dry air will move over northern Florida early on Friday, but easterly winds will prevail pushing storms across the state by the afternoon.

Going into the weekend, the ridge axis moves east and will bring strong east to southeast winds to the Peninsula. This will result in a significant increase in showers and thunderstorms in the afternoon and evening. Temperatures won't really change through the rest of the period, with highs in the 90s and overnight lows in the 70s.

MARINE . Pleasant boating conditions will prevail as high pressure over south Florida remains in place through the period. Westerly winds will push showers and thunderstorms across the waters during the early morning hours. By Wednesday, relatively light winds return with onshore sea breeze in the afternoon, as high pressure begins to move north. The rest of the week and through the weekend, easterly flow will bring showers and storms over the waters by late evening through the overnight hours. No headlines are anticipated through the period. The main threat will be associated with showers and thunderstorms that will be capable of producing frequent lightning, locally gusty winds, and rough seas.

FIRE WEATHER . High pressure at the surface will continue to bring westerly winds and showers and thunderstorms to the area. The dry airmass that moved in this morning will move south of our area through the evening allowing humidities to nicely recover. This will result in an increase in showers and thunderstorms on Tuesday and relatively light westerlies staying in place. Winds will shift and become more east to northeast on Wednesday as high pressure begins to move north. Otherwise, no fire weather concerns.

Preliminary Point Temps/PoPs. TPA 80 91 79 93 / 20 30 10 30 FMY 79 93 78 94 / 10 20 0 30 GIF 76 93 75 93 / 10 30 10 40 SRQ 80 91 78 92 / 10 20 0 20 BKV 76 92 75 93 / 20 30 10 30 SPG 79 92 79 93 / 20 20 0 20

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

UPDATE/AVIATION/MARINE . 25/Davis UPPER AIR . 99 DECISION SUPPORT . 99


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
BGCF1 - Big Carlos Pass, FL 11 mi96 min W 5.1 G 8.9 87°F 1016.7 hPa
FMRF1 - 8725520 - Fort Myers, FL 19 mi42 min 1016.5 hPa
NPSF1 - 8725110 - Naples, FL 25 mi42 min 1017.1 hPa
RKXF1 - Rookery Bay Reserve, FL 33 mi45 min NNW 2.9 78°F 1017 hPa77°F
VENF1 - Venice, FL 48 mi30 min W 8.9 G 9.9 85°F 89°F1015.9 hPa78°F

Wind History for Naples, FL
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Fort Myers, Page Field, FL16 mi37 minWSW 310.00 miMostly Cloudy84°F77°F80%1016.1 hPa
Fort Myers, Southwest Florida International Airport, FL19 mi37 minSW 310.00 miFair82°F77°F85%1015.9 hPa

Link to 5 minute data for KFMY

Wind History from FMY (wind in knots)
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Last 24hrSE4SE3CalmCalmW3CalmS3CalmW6W9SW9W9W13
G29
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1 day agoSW5SW4SW5SW4SW5CalmSW4SW5W6W11NW12W13
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2 days agoW6W4N9NW5W9W7NW7W5W8W9NW10NW10NW12W10NW13W10W12
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Tide / Current Tables for Point Ybel, San Carlos Bay Entrance, Florida
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Point Ybel
Click for Map
Tue -- 01:59 AM EDT     Moonrise
Tue -- 02:03 AM EDT     1.29 feet Low Tide
Tue -- 06:44 AM EDT     Sunrise
Tue -- 08:01 AM EDT     2.47 feet High Tide
Tue -- 03:05 PM EDT     Moonset
Tue -- 03:48 PM EDT     0.86 feet Low Tide
Tue -- 08:23 PM EDT     Sunset
Tue -- 09:23 PM EDT     1.72 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.41.31.31.31.51.82.12.42.52.42.221.71.41.10.90.911.21.51.61.71.71.7

Tide / Current Tables for Point Ybel (0.4 Mi. NW of), Florida Current
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Point Ybel (0.4 Mi. NW of)
Click for Map
Tue -- 01:24 AM EDT     -0.28 knots Max Ebb
Tue -- 01:59 AM EDT     Moonrise
Tue -- 02:55 AM EDT     0.00 knots Slack
Tue -- 05:49 AM EDT     0.87 knots Max Flood
Tue -- 06:44 AM EDT     Sunrise
Tue -- 09:38 AM EDT     -0.00 knots Slack
Tue -- 02:08 PM EDT     -0.89 knots Max Ebb
Tue -- 03:05 PM EDT     Moonset
Tue -- 05:07 PM EDT     0.00 knots Slack
Tue -- 07:23 PM EDT     0.39 knots Max Flood
Tue -- 08:23 PM EDT     Sunset
Tue -- 09:01 PM EDT     0.36 knots Min Flood
Tue -- 10:25 PM EDT     0.38 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-0.1-0.3-0.200.40.80.90.70.40.1-0.1-0.2-0.5-0.7-0.9-0.8-0.5-00.30.40.40.40.40.4

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 (0,6,7,8)
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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.