Wednesday, December11, 2019
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Marine Weather and Tides
Madeira Beach, 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 7:10AMSunset 5:38PM Wednesday December 11, 2019 9:43 PM EST (02:43 UTC) Moonrise 5:25PMMoonset 6:29AM Illumination 100% Phase: Full Moon; Moon at 15 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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GMZ830 Tampa Bay Waters- 844 Pm Est Wed Dec 11 2019
.small craft advisory in effect through Thursday morning...
Rest of tonight..Northeast winds around 20 knots. Bay and inland waters choppy.
Thursday..Northeast winds around 20 knots diminishing to 10 to 15 knots in the afternoon. Bay and inland waters choppy. A slight chance of showers early in the afternoon.
Thursday night..East winds around 10 knots. Bay and inland waters a light chop. A slight chance of showers after midnight.
Friday..Southeast winds around 10 knots then becoming south in the afternoon. Bay and inland waters a light chop. A slight chance of showers in the morning, then a chance of showers in the afternoon.
Friday night..South winds around 10 knots. Bay and inland waters a light chop. A chance of showers.
Saturday..Southwest winds around 10 knots then becoming west around 15 knots in the afternoon. Bay and inland waters a moderate chop. A chance of showers in the morning.
Saturday night..North winds around 10 knots. Bay and inland waters a light chop.
Sunday..Northeast winds around 5 knots. Bay and inland waters smooth.
Sunday night..East winds around 10 knots. Bay and inland waters a light chop.
Monday..Southeast winds around 10 knots. Bay and inland waters a light chop.
GMZ800 Synopsis For The Coastal Waters From Bonita Beach To Suwannee River- 844 Pm Est Wed Dec 11 2019
Synopsis..After the passage of the front, winds will increase out of the north...prompting the issuance of a small craft advisory and small craft exercise caution for northern, central, and parts of southern waters. Winds will subside late Thursday through the upcoming weekend as a weak area of low pressure develops over the northern gulf and lifts northeast through florida, bringing increased chances for showers through Saturday.


7 Day Forecast for Marine Location Near Madeira Beach, FL
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location: 27.79, -82.78     debug


Area Discussion for - Tampa Bay, FL
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FXUS62 KTBW 120008 AFDTBW

Area Forecast Discussion National Weather Service Tampa Bay Ruskin FL 708 PM EST Wed Dec 11 2019

UPDATE. Some showers and isolated thunderstorms remain in southern portions of Lee County just east of Fort Myers along with a couple isolated showers in Charlotte and DeSoto counties. These showers are moving off to the SE and should exit the area over the next hour or two with little impact. The remainder of the evening looks fairly quiet, with low clouds hanging around for the rest of the night and into the day tomorrow.

Weak instability will remain across portions of the peninsula, and this could lead to a few showers across interior portions of the peninsula tomorrow. However, no major washout is expected. Showers remain in the forecast into the weekend when another front pushes through. The forecast remains on track and no additional adjustments have been made.

AVIATION. Ceilings have been bouncing up and down, flirting with IFR, and northern terminals have begun to experience gusty north winds. This trend will continue through the overnight with MVFR ceilings prevailing from 02Z onward and gusty winds to the north. Southern terminals are dealing with showers, but these are expected to wind down in the next hour or two, and MVFR ceilings will also set in as the front passes by with a stronger northerly wind.

MARINE. While the sea fog potential has diminished now that the front has passed, gustier NNE winds are setting in across coastal waters, prompting the issuance of a Small Craft Advisory for most of the coastal waters and Small Craft Exercise Caution for southern nearshore waters. Conditions will begin to improve late in the day tomorrow, but unsettled weather returns on Friday as another front approaches the state.

Preliminary Point Temps/PoPs. TPA 62 78 67 75 / 0 10 10 30 FMY 68 81 68 79 / 50 30 10 20 GIF 64 76 66 77 / 10 30 30 30 SRQ 65 80 67 76 / 10 10 10 20 BKV 61 76 64 75 / 0 10 30 30 SPG 63 77 67 74 / 0 10 10 30

TBW WATCHES/WARNINGS/ADVISORIES. FL . None. Gulf waters . Small Craft Advisory until 1 PM EST Thursday for 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.

Small Craft Advisory from 10 PM this evening to 10 AM EST Thursday for Waters from Bonita Beach to Englewood FL out 20 to 60 NM.

Small Craft Advisory until 10 AM EST Thursday for Coastal waters from Englewood to Tarpon Springs FL out 20 NM-Coastal waters from Tarpon Springs to Suwannee River FL out 20 NM- Tampa Bay waters.



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


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
CLBF1 6 mi109 min ENE 6 G 18 69°F 1022.9 hPa
SAPF1 - 8726520 - St. Petersburg, FL 8 mi55 min NE 19 G 22 65°F 69°F1024.8 hPa
CWBF1 - 8726724 - Clearwater Beach, FL 13 mi55 min NE 12 G 18 64°F 72°F1024.9 hPa
MTBF1 13 mi55 min ENE 23 G 27 65°F 1024.5 hPa61°F
OPTF1 - 8726607 - Old Port Tampa, FL 13 mi55 min NE 8 G 12 65°F 70°F1024.8 hPa
GCTF1 14 mi55 min 65°F 1024.6 hPa61°F
42098 16 mi43 min 70°F4 ft
PMAF1 16 mi55 min 65°F 71°F1024.3 hPa
MCYF1 21 mi55 min 71°F
TPAF1 - 8726694 - TPA Cruise Terminal 2, Tampa, FL 21 mi73 min N 12 G 17
TSHF1 - 8726667 - East Bay Causeway, FL 21 mi61 min NNE 8.9 G 12
FHPF1 - Fred Howard Park, FL 25 mi109 min NE 14 G 16 65°F 1025 hPa
ARPF1 - APK - Aripeka, FL 45 mi109 min ENE 13 G 16 64°F 1024.9 hPa

Wind History for St. Petersburg, FL
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Albert Whitted Airport, FL8 mi50 minNE 2310.00 miOvercast and Windy66°F62°F87%1024.4 hPa
St. Petersburg/Clearwater Airport, FL10 mi50 minENE 910.00 miOvercast0°F0°F%1024.8 hPa
Macdill Air Force Base, Fl., FL15 mi1.8 hrsNE 1810.00 miOvercast and Breezy66°F60°F82%1023.7 hPa
Tampa, Tampa International Airport, FL18 mi50 minNE 9 G 177.00 miOvercast65°F57°F76%1025.1 hPa
Tampa, Peter O Knight Airport, FL20 mi48 minENE 14 G 1910.00 miOvercast64°F62°F94%1025.1 hPa

Link to 5 minute data for KSPG

Wind History from SPG (wind in knots)
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Last 24hrSW5SW4SW4S3S5SE4CalmCalmCalmCalmNE3CalmCalmE4SE4E3CalmE4NE6N8NE14NE20NE22NE23
1 day agoCalmCalmE4E3CalmCalmCalmNE3NE4CalmE3SE4SE3CalmCalmSE3SW13S12S13S9S8SW6SW5SW5
2 days agoSE7SE3SE6SE7SE8SE8SE5SE5SE4SE10SE7S8S3S6S7S8S10SW7SW8SW8SW5SW5CalmS3

Tide / Current Tables for Johns Pass, Boca Ciega Bay, Florida
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Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.


Tide / Current Tables for Tampa Bay Entrance (Egmont Channel), Florida Current
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Tampa Bay Entrance (Egmont Channel)
Click for Map
Wed -- 12:17 AM EST     -0.00 knots Slack
Wed -- 03:59 AM EST     -2.17 knots Max Ebb
Wed -- 06:29 AM EST     Moonset
Wed -- 07:11 AM EST     Sunrise
Wed -- 08:14 AM EST     0.00 knots Slack
Wed -- 11:31 AM EST     1.75 knots Max Flood
Wed -- 03:42 PM EST     -0.00 knots Slack
Wed -- 04:52 PM EST     -0.17 knots Max Ebb
Wed -- 05:25 PM EST     Moonrise
Wed -- 05:37 PM EST     Sunset
Wed -- 06:10 PM EST     0.00 knots Slack
Wed -- 10:14 PM EST     1.23 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.2-0.6-1.4-2-2.2-2-1.6-0.9-0.20.61.31.71.71.30.80.3-0.1-0.2-00.30.611.21.1

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 (21,6,7,8)
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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.