Monday, December9, 2019
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Marine Weather and Tides
Sanibel, FL

Version 3.4
NOTICE
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.
6/2/2019. Many thanks to a user for reporting an error on one of the Edit pages. The switch to PHP 7.2 caused many pages that previously worked to quit working. I fixed many but I still depend on users to report ones I missed. Please report errors HERE or send an email to me at L-36.com. Allen

Sunrise 7:03AMSunset 5:37PM Monday December 9, 2019 3:32 PM EST (20:32 UTC) Moonrise 4:00PMMoonset 4:29AM Illumination 96% Phase: Waxing Gibbous; Moon at 13 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- 259 Pm Est Mon Dec 9 2019
Tonight..Southeast winds around 5 knots then becoming east around 10 knots in the late evening and overnight. Seas 2 feet or less. Bay and inland waters a light chop.
Tuesday..South winds around 10 knots. Seas 2 feet. Bay and inland waters a light chop.
Tuesday night..Southeast winds around 10 knots. Seas 2 feet or less. Bay and inland waters a light chop. A slight chance of showers in the late evening and overnight.
Wednesday..South winds around 10 knots then becoming northeast around 5 knots late in the afternoon. Seas 2 feet or less. Bay and inland waters a light chop. A slight chance of showers.
Wednesday night..Northeast winds around 10 knots. Seas 2 feet. Bay and inland waters a light chop. A slight chance of showers early in the evening, then a chance of showers in the late evening and overnight. A slight chance of Thunderstorms toward morning.
Thursday..Northeast winds around 10 knots. Seas 2 feet. Bay and inland waters a light chop. A chance of showers and a slight chance of Thunderstorms.
Thursday night..East winds around 10 knots. Seas 2 feet. Bay and inland waters a light chop. A chance of showers in the evening. A slight chance of Thunderstorms.
Friday..Southeast winds around 10 knots. Seas 2 feet. Bay and inland waters a light chop. A slight chance of Thunderstorms. A chance of showers in the late morning and afternoon.
Friday night..South winds around 10 knots. Seas 2 feet or less. Bay and inland waters a light chop. A slight chance of Thunderstorms in the evening. A chance of showers.
Saturday..Southwest winds around 10 knots then becoming west late in the afternoon. Seas 2 feet. Bay and inland waters a light chop. A chance of showers.
GMZ800 Synopsis For The Coastal Waters From Bonita Beach To Suwannee River- 259 Pm Est Mon Dec 9 2019
Synopsis.. High pressure will persist over the waters through Tuesday night. A cold front will move into the northern waters on Wednesday, and then into the central waters Wednesday night where it will stall out through Thursday. Ahead of the front, there is an increasing threat for sea fog across the nature coast, which may eventually extend south to the mouth of tampa bay. SEa fog may persist through Wednesday morning over the cooler northern shelf waters. As the front moves into the area increasing northeast winds and seas are expected, with a period of cautionary or near advisory level conditions possible by late Wednesday into Thursday, especially across the central and northern waters.


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 091951 AFDTBW

Area Forecast Discussion National Weather Service Tampa Bay Ruskin FL 251 PM EST Mon Dec 9 2019

DISCUSSION. A warming trend will continue with low/high temperatures running well above average for this time of year as the low-level ridge axis strengthens across the Peninsula, aiding in warm and humid southerly flow. Tomorrow will be our warmest and most muggy day with everyone (with the exception of the beaches) climbing into the 80s and dewpoints hovering around 70. A weakening cold front will move into the area on Wednesday. Ahead of this front, southerly flow will continue to advect warm/moist air across the region. Recent SpoRT satellite analysis shows Gulf water temps around the Nature Coast and Big Big bend areas to be in the low- mid 60s. Low dewpoint depressions along with forecast dewpoints at or just above the SST suggest sea fog development appears possible as soon as tonight for the Big Bend / northern Nature Coast. All hi-res model guidance is in good agreement on fog forming, so now it's the exact when/where/duration that usually is difficult for these events. Once it does form it may persist through Wednesday morning, especially for the extreme northern areas. Inland land fog is also possible tonight and tomorrow night, so motorists should use caution during their morning commutes. Diurnally driven showers will also be possible at any time in the afternoon due to the southerly warm/moist air and abundance of daytime heating. Overall, however, rain totals appear low.

The front will stall out over Central Florida on Thursday before slowly drifting back north as a warm front. More pleasant temps will reside north of the boundary while south of I-4 corridor will be stuck in warmer weather. The increasing easterly flow on the north side of the warm front along with additional focus of convergence will maintain rain chances across the area. A weak area of low pressure will move into the northeast Gulf states on Friday. This low will deepen as it rapidly moves NNE along the Atlantic seaboard. The associated cold front will drag across our region on Saturday with showers and a few thunderstorms possible. As surface high pressure builds behind it, drier and slightly cooler air will filter back into the area.

AVIATION. (18Z TAF Cycle) Prevailing VFR conditions for most TAF sites through the period. Exception is SRQ with MVFR cigs after 12Z and MVFR cigs/vsby possible at LAL after 10Z. Winds gradually shifting SW, becoming light overnight, and increasing out of the SE/S by late morning into early afternoon. Otherwise, cigs should generally remain around 050 during the late morning.

MARINE. High pressure will hold over the waters through Tuesday night. A cold front will move into the northern waters on Wednesday, and then into the central waters Wednesday night where it will stall out through Thursday. Ahead of the front, there is an increasing threat for sea fog across the Nature Coast, which may eventually extend south to the mouth of Tampa Bay. As the front moves into the area increasing northeast winds and seas are expected, with a period of Cautionary or near advisory level conditions possible by late Wednesday into Thursday, especially across the central and northern waters.

FIRE WEATHER. A warm and moist airmass will keep RH values well above critical values. Winds will vary out of the southeast to southwest for the next couple of days. Inland land fog is likely to develop overnight into the early morning hours tonight and Tuesday night. A couple of cold fronts will approach the region both Wed and Sat which will produce wind shifts and chances for precip. Otherwise, no major fire wx concerns are expected.

Preliminary Point Temps/PoPs. TPA 64 80 68 79 / 0 10 20 30 FMY 66 84 69 82 / 0 0 20 30 GIF 64 83 67 82 / 0 20 20 40 SRQ 64 82 68 80 / 0 10 20 20 BKV 60 82 64 80 / 0 10 30 40 SPG 65 79 68 77 / 0 10 30 30

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

DISCUSSION/AVIATION/MARINE/FIRE WEATHER . 42/Norman DECISION SUPPORT . 57/McMichael


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
BGCF1 - Big Carlos Pass, FL 11 mi99 min WSW 7 G 8.9 76°F 1018.3 hPa
FMRF1 - 8725520 - Fort Myers, FL 19 mi51 min WSW 2.9 G 4.1 78°F 71°F1017.2 hPa
NPSF1 - 8725110 - Naples, FL 25 mi51 min SSW 7 G 8 75°F 71°F1017.3 hPa
RKXF1 - Rookery Bay Reserve, FL 33 mi108 min SSW 7 84°F 1018 hPa68°F
VENF1 - Venice, FL 48 mi33 min SSE 7 G 7 73°F 70°F1017.6 hPa (-1.8)66°F

Wind History for Naples, FL
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Fort Myers, Page Field, FL16 mi40 minN 010.00 miA Few Clouds84°F63°F49%1017.3 hPa
Fort Myers, Southwest Florida International Airport, FL19 mi40 minWSW 610.00 miMostly Cloudy80°F62°F54%1017 hPa

Link to 5 minute data for KFMY

Wind History from FMY (wind in knots)
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Last 24hr6E6E6S3E7SE3CalmSE3E3CalmE3CalmE3E3CalmCalmE3E5SE8S10S8SE4S5Calm
1 day agoNW3W6W3CalmCalmN3N5E6E3E4E4CalmNE3NE5E6E3CalmE6E9E5E4E6SE6SE7
2 days agoW7W8NW4NW3CalmNW4CalmSE3CalmCalmCalmCalmCalmCalmCalmNE3CalmE3NE5NE553CalmW6

Tide / Current Tables for Point Ybel, San Carlos Bay Entrance, Florida (2)
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Point Ybel
Click for Map
Mon -- 04:29 AM EST     Moonset
Mon -- 05:15 AM EST     -0.13 feet Low Tide
Mon -- 07:04 AM EST     Sunrise
Mon -- 11:27 AM EST     1.74 feet High Tide
Mon -- 03:59 PM EST     Moonrise
Mon -- 04:22 PM EST     1.29 feet Low Tide
Mon -- 05:36 PM EST     Sunset
Mon -- 09:35 PM EST     2.60 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.81.40.90.40-0.1-00.30.71.21.61.71.71.61.51.41.31.31.61.92.32.52.62.4

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
Mon -- 03:15 AM EST     -1.33 knots Max Ebb
Mon -- 04:29 AM EST     Moonset
Mon -- 06:26 AM EST     0.00 knots Slack
Mon -- 07:04 AM EST     Sunrise
Mon -- 09:27 AM EST     1.03 knots Max Flood
Mon -- 02:12 PM EST     -0.00 knots Slack
Mon -- 03:53 PM EST     -0.29 knots Max Ebb
Mon -- 03:59 PM EST     Moonrise
Mon -- 05:22 PM EST     0.00 knots Slack
Mon -- 05:36 PM EST     Sunset
Mon -- 08:22 PM EST     0.98 knots Max Flood
Mon -- 11:09 PM EST     -0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-0.4-0.8-1.1-1.3-1.2-0.9-0.30.30.8110.90.60.40.1-0.2-0.3-0.10.30.710.90.60.1

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 (15,3,4,5)
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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 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.