Monday, December9, 2019
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Marine Weather and Tides
Siesta Key, 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 7:07AMSunset 5:37PM Monday December 9, 2019 8:43 PM EST (01:43 UTC) Moonrise 4:01PMMoonset 4:32AM 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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GMZ853 Coastal Waters From Englewood To Tarpon Springs Fl Out 20 Nm- 813 Pm Est Mon Dec 9 2019
Rest of tonight..South winds around 5 knots then becoming southeast around 10 knots after midnight. Seas 2 feet or less. Bay and inland waters a light chop.
Tuesday..Southeast winds around 10 knots. Seas 2 feet. Bay and inland waters a light chop. Patchy sea fog late in the afternoon.
Tuesday night..South winds around 10 knots. Seas 2 feet. Bay and inland waters a light chop. Patchy sea fog early in the evening. A slight chance of showers in the evening. A chance of showers after midnight.
Wednesday..South winds around 10 knots. Seas 2 feet. Bay and inland waters a light chop. A slight chance of showers.
Wednesday night..Northeast winds around 15 knots. Seas 2 to 3 feet. Bay and inland waters a moderate chop. A chance of showers.
Thursday..Northeast winds around 15 knots diminishing to 5 to 10 knots in the afternoon. Seas 2 to 3 feet. Bay and inland waters a moderate chop. A chance of showers and a slight chance of Thunderstorms.
Thursday night..East winds around 15 knots. Seas 2 feet. Bay and inland waters a moderate 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 afternoon.
Friday night..South winds around 10 knots. Seas 2 feet. Bay and inland waters a light chop. A chance of showers and a slight chance of Thunderstorms in the evening, then showers likely after midnight.
Saturday..West winds around 10 knots. 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- 813 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 Siesta Key, FL
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location: 27.3, -82.57     debug


Area Discussion for - Tampa Bay, FL
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FXUS62 KTBW 100021 AFDTBW

Area Forecast Discussion National Weather Service Tampa Bay Ruskin FL 721 PM EST Mon Dec 9 2019

UPDATE. A generally quiet night is expected with temperatures cooling into the upper 50s to mid 60s by dawn. Tomorrow's weather will be very similar today, with a cool start to the day and a warm afternoon as highs climb into the low-to-mid 80s. The only concern overnight is the development of patchy fog. With fairly calm winds and high dewpoints, areas (particularly from Tampa Bay Southward) could see fog develop in the early morning hours. This should begin to clear once the sun rises.

As a front approaches our area late Tuesday night into Wednesday, stalls, and then advects back northward as a warm front, conditions will begin to deteriorate, with a rainier latter half of the week expected. Overall, the forecast remains on track and no significant changes have been made or are anticipated.

AVIATION. VFR conditions are expected to prevail, but lower ceilings,and mist are possible from 10Z onward through as late as 15Z with light and variable winds. As temperatures warm, ceilings will lift, and winds will become SSW in the afternoon.

Marine. Conditions remain fairly calm and quiet overnight. Some fog is possible in extreme northern coastal waters, but conditions do not look conducive for widespread fog. There is an increasing threat for sea fog tomorrow night for the Nature Coast extending down towards Tampa Bay ahead of a cold front. This front will move southward and then stall before moving back north mid-week. This will quickly eliminate the fog threat Wednesday into Thursday, but could cause seas to approach cautionary criteria.

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.

UPDATE/AVIATION/MARINE . Flannery UPPER AIR . Davis DECISION SUPPORT . Davis


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
VENF1 - Venice, FL 17 mi43 min E 1.9 G 2.9 73°F 70°F1019.1 hPa (+1.2)67°F
42013 - C10 - Navy-2 21 mi73 min SE 1.9 G 3.9 73°F1018.9 hPa
PMAF1 23 mi205 min 71°F
42098 28 mi43 min 69°F2 ft
CLBF1 31 mi109 min S 4.1 G 7 72°F 1018.1 hPa
SAPF1 - 8726520 - St. Petersburg, FL 32 mi205 min 74°F
MCYF1 43 mi205 min 70°F
TPAF1 - 8726694 - TPA Cruise Terminal 2, Tampa, FL 44 mi205 min SSW 1.9 G 5.1

Wind History for C-Cut, FL
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Sarasota / Bradenton, Sarasota-Bradenton International Airport, FL7 mi50 minN 010.00 miFair69°F64°F87%1018.5 hPa
Venice Municipal Airport, FL17 mi48 minN 09.00 miFair68°F66°F94%1019.3 hPa

Link to 5 minute data for KSRQ

Wind History from SRQ (wind in knots)
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Last 24hrNE3E5SE8SE8SE5E4SE4E5E4SE5E5SE6SE8SE10S7S10S12S10SW10SW11S8S6S3Calm
1 day agoCalmCalmNE4NE4E5E5E5E5E5E6E5E6E7E10E8SE7SE9W7W8W5W4CalmCalmNE3
2 days agoCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmE3NE6E6E7NE4NE6E4W8W6NW4CalmCalmNE4

Tide / Current Tables for Sarasota, Sarasota Bay, Florida
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Sarasota
Click for Map
Mon -- 04:32 AM EST     Moonset
Mon -- 05:21 AM EST     -0.07 feet Low Tide
Mon -- 07:08 AM EST     Sunrise
Mon -- 11:53 AM EST     1.17 feet High Tide
Mon -- 04:00 PM EST     Moonrise
Mon -- 04:16 PM EST     1.00 feet Low Tide
Mon -- 05:36 PM EST     Sunset
Mon -- 10:00 PM EST     2.01 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.41.10.70.40.1-0.1-00.20.50.811.11.21.11.11111.21.41.71.921.9

Tide / Current Tables for Tampa Bay (Sunshine Skyway Bridge), Florida Current
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Tampa Bay (Sunshine Skyway Bridge)
Click for Map
Mon -- 03:16 AM EST     -1.39 knots Max Ebb
Mon -- 04:33 AM EST     Moonset
Mon -- 07:02 AM EST     0.00 knots Slack
Mon -- 07:09 AM EST     Sunrise
Mon -- 10:18 AM EST     1.43 knots Max Flood
Mon -- 01:59 PM EST     -0.00 knots Slack
Mon -- 03:45 PM EST     -0.38 knots Max Ebb
Mon -- 04:00 PM EST     Moonrise
Mon -- 05:36 PM EST     Sunset
Mon -- 05:38 PM EST     0.00 knots Slack
Mon -- 09:13 PM EST     1.16 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-0.2-0.8-1.2-1.4-1.3-1.1-0.6-00.61.11.41.310.5-0-0.3-0.4-0.20.10.611.21.10.7

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 (20,4,5,8)
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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.