Friday, December13, 2019
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Marine Weather and Tides
Treasure Island, 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 7:11AMSunset 5:38PM Friday December 13, 2019 8:34 AM EST (13:34 UTC) Moonrise 7:11PMMoonset 8:29AM Illumination 97% Phase: Waning Gibbous; Moon at 16 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- 425 Am Est Fri Dec 13 2019
Today..Southeast winds around 10 knots 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 and a slight chance of Thunderstorms in the afternoon.
Tonight..Southwest winds around 15 knots. Bay and inland waters a moderate chop. A chance of showers and a slight chance of Thunderstorms in the evening, then showers likely and a chance of Thunderstorms after midnight.
Saturday..West winds around 15 knots becoming northwest by afternoon. Bay and inland waters a moderate chop. A chance of showers in the morning.
Saturday night..Northwest winds around 10 knots becoming north 5 to 10 knots overnight. Bay and inland waters a light chop.
Sunday..East winds 5 to 10 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.
Monday night..Southeast winds 5 to 10 knots. Bay and inland waters smooth.
Tuesday..South winds around 10 knots becoming southwest in the afternoon. Bay and inland waters a light chop. A chance of showers in the morning, then showers likely in the afternoon.
GMZ800 Synopsis For The Coastal Waters From Bonita Beach To Suwannee River- 425 Am Est Fri Dec 13 2019
Synopsis..Low pressure will develop over the northeastern gulf of mexico and move northeast today, bringing showers and a chance for a few Thunderstorms into Saturday morning. A cold front will then move through the area late tonight and Saturday, veering winds to the northwest possibly near advisory or cautionary criteria. High pressure quickly builds in for Sunday, with winds diminishing. There is some potential for sea fog to develop over the waters mainly north of tampa bay tonight into early Saturday, possibly lingering into Saturday afternoon, but this will continue to be Monitored.


7 Day Forecast for Marine Location Near Treasure Island city, FL
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location: 27.77, -82.78     debug


Area Discussion for - Tampa Bay, FL
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FXUS62 KTBW 131130 AFDTBW

Area Forecast Discussion National Weather Service Tampa Bay Ruskin FL 630 AM EST Fri Dec 13 2019

AVIATION. Mainly VFR conditions are expected to prevail into this afternoon, but some shower activity at that time could cause some MVFR conditions. Additional convection is expected tonight, with additional restrictions possible. Winds will be southeast, then turning south today and southwest tonight into tomorrow.

Prev Discussion. /issued 423 AM EST Fri Dec 13 2019/

SHORT TERM (Today-Saturday) . Surface low pressure will continue to develop and move northeastward across the northeast Gulf of Mexico today with a warm front across the region lifting north of the area this afternoon. Scattered showers north of the warm front will move out of the area this morning, but more convection out in the gulf associated with the low will be moving into our coastal waters as the day progresses. Some of these showers and thunderstorms will affect the Nature Coast this morning and south into the Tampa Bay region during the afternoon, but they are expected to weaken as the lead shortwave trough moves by during the day. More convection is forecast to develop tonight as forcing from the next upstream shortwave trough will approach leading to intensification of the low-level jet and shear values. Best chances for thunderstorms will be from around Tampa Bay northward and a few of the storms could become severe with isolated damaging winds and possibly a tornado. Cold front will sweep across the area late tonight and Saturday morning bringing an end to the precipitation from northwest to southeast and ushering in cooler drier air.

MID TERM/LONG TERM (Saturday night-Thursday) . Dry and stable high pressure builds in through early Monday and tracks east across the Atlantic Ocean . while stretching back across Florida into the Gulf of Mexico into early Tuesday. Then a mid-level trough with an accompanying cold front traverses the eastern U.S. providing enough moisture and lift for showers across the region Tuesday into early Wednesday. Another area of high pressure settles into the southeast states for the end of the period with a dry and cool airmass. Temperatures initially run above normal, but drop to below normal during Wednesday and Thursday.

AVIATION . Areas of MVFR ceilings will be possible early this morning along with a few light showers. VFR conditions are expected to prevail from late morning through the afternoon, but a few showers will be possible around the Tampa Bay region this afternoon which could cause some MVFR/local IFR conditions. More convection will develop from northwest to southeast tonight causing some more MVFR/local IFR conditions.

MARINE . Low pressure will develop over the northeastern Gulf of Mexico and move northeast today, bringing showers and a chance for a few thunderstorms. A cold front will then move through the late tonight and Saturday, veering winds to the northwest possibly near advisory or cautionary criteria. High pressure then quickly builds in for Sunday, with winds diminishing. There remains some potential for sea fog to develop over the waters mainly north of Tampa Bay tonight into early Saturday, possibly lingering into Saturday morning and this will continue to be monitored.

FIRE WEATHER . No fire weather concerns are anticipated over the next few days as relative humidity values are forecast to remain above critical thresholds. Some patchy fog will be possible early this morning and again tonight.

Preliminary Point Temps/PoPs. TPA 78 68 74 55 / 30 70 30 0 FMY 81 69 80 57 / 10 30 50 0 GIF 78 66 77 52 / 20 40 30 0 SRQ 79 69 75 56 / 30 60 30 0 BKV 78 64 73 48 / 40 70 20 0 SPG 77 68 73 57 / 40 70 30 0

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

AVIATION . 05/Carlisle Previous Discussion . Close/Rude


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
CLBF1 6 mi101 min ESE 4.1 G 6 69°F 1015.2 hPa
SAPF1 - 8726520 - St. Petersburg, FL 8 mi47 min Calm G 1.9 68°F 69°F1016.4 hPa
MTBF1 12 mi47 min SE 5.1 G 6 68°F 1016.3 hPa65°F
OPTF1 - 8726607 - Old Port Tampa, FL 13 mi47 min ESE 1.9 G 1.9 68°F 70°F1016.5 hPa
GCTF1 14 mi47 min 68°F 1016.4 hPa68°F
42098 15 mi35 min 69°F1 ft
CWBF1 - 8726724 - Clearwater Beach, FL 15 mi59 min E 4.1 G 7 69°F 71°F1016.4 hPa
PMAF1 15 mi47 min 67°F 71°F1016.2 hPa
MCYF1 21 mi47 min 69°F
TPAF1 - 8726694 - TPA Cruise Terminal 2, Tampa, FL 22 mi47 min E 1 G 1.9
TSHF1 - 8726667 - East Bay Causeway, FL 22 mi53 min ENE 1 G 2.9
FHPF1 - Fred Howard Park, FL 26 mi101 min E 2.9 G 5.1 68°F 1016.8 hPa
ARPF1 - APK - Aripeka, FL 46 mi101 min ESE 2.9 G 5.1 71°F 1016 hPa

Wind History for St. Petersburg, FL
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Albert Whitted Airport, FL8 mi42 minESE 410.00 miOvercast68°F66°F96%1015.6 hPa
St. Petersburg/Clearwater Airport, FL11 mi42 minN 010.00 miOvercast70°F66°F87%1016.2 hPa
Macdill Air Force Base, Fl., FL15 mi99 minESE 310.00 miMostly Cloudy68°F65°F94%1016.2 hPa
Tampa, Tampa International Airport, FL19 mi42 minESE 410.00 miOvercast70°F66°F87%1016.5 hPa
Tampa, Peter O Knight Airport, FL20 mi40 minN 010.00 miMostly Cloudy0°F0°F%1016.6 hPa

Link to 5 minute data for KSPG

Wind History from SPG (wind in knots)
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Last 24hrNE17NE15NE14NE12NE9E10E11E11NE14NE11E13E12E12E7E13E11SE6SE6E7E4SE6SE8SE4SE4
1 day agoCalmCalmE4SE4E3CalmE4NE6N8NE14NE20NE22NE23NE22E16NE16NE18NE18NE15NE16NE16NE17NE15NE15
2 days agoSE4SE3CalmCalmSE3SW13S12S13S9S8SW6SW5SW5SW5SW4SW4S3S5SE4CalmCalmCalmCalmNE3

Tide / Current Tables for Johns Pass, Florida
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Johns Pass
Click for Map
Fri -- 07:05 AM EST     -0.64 feet Low Tide
Fri -- 07:13 AM EST     Sunrise
Fri -- 08:29 AM EST     Moonset
Fri -- 02:26 PM EST     1.32 feet High Tide
Fri -- 05:26 PM EST     1.28 feet Low Tide
Fri -- 05:37 PM EST     Sunset
Fri -- 07:11 PM EST     Moonrise
Fri -- 11:24 PM EST     2.39 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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2.21.91.40.90.3-0.1-0.5-0.6-0.5-0.20.20.611.21.31.31.31.31.31.41.622.22.4

Tide / Current Tables for Tampa Bay Entrance (Egmont Channel), Florida Current
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Tampa Bay Entrance (Egmont Channel)
Click for Map
Fri -- 01:24 AM EST     -0.00 knots Slack
Fri -- 05:15 AM EST     -2.40 knots Max Ebb
Fri -- 07:12 AM EST     Sunrise
Fri -- 08:28 AM EST     Moonset
Fri -- 09:34 AM EST     0.00 knots Slack
Fri -- 12:57 PM EST     1.76 knots Max Flood
Fri -- 05:37 PM EST     Sunset
Fri -- 05:51 PM EST     -0.00 knots Slack
Fri -- 06:21 PM EST     -0.03 knots Max Ebb
Fri -- 06:51 PM EST     0.00 knots Slack
Fri -- 07:11 PM EST     Moonrise
Fri -- 11:26 PM EST     1.19 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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10.3-0.5-1.4-2.1-2.4-2.3-1.9-1.2-0.50.31.11.61.81.61.10.60.2-000.20.60.91.2

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 (8,2,3,4)
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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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Disclaimer:
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.