Thursday, April9, 2020
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Marine Weather and Tides
Kenneth City, 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 7:10AMSunset 7:54PM Thursday April 9, 2020 8:50 PM EDT (00:50 UTC) Moonrise 8:55PMMoonset 7:30AM Illumination 95% Phase: Waning Gibbous; Moon at 17 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- 836 Pm Edt Thu Apr 9 2020
Rest of tonight..West winds around 10 knots. Bay and inland waters a light chop. A slight chance of showers early in the evening.
Friday..Northwest winds 5 to 10 knots then becoming north around 15 knots in the afternoon. Bay and inland waters a moderate chop. A chance of showers. A slight chance of Thunderstorms in the afternoon.
Friday night..Northeast winds around 10 knots. Bay and inland waters a light chop.
Saturday..East winds around 10 knots then becoming southeast around 5 knots in the afternoon. Bay and inland waters a light chop.
Saturday night..Southeast winds 5 to 10 knots increasing to around 15 knots after midnight. Bay and inland waters a moderate chop.
Sunday..South winds 10 to 15 knots increasing to around 20 knots in the afternoon. Bay and inland waters choppy.
Sunday night..South winds 10 to 15 knots increasing to around 20 knots after midnight. Bay and inland waters choppy.
Monday..Southwest winds around 15 knots. Bay and inland waters a moderate chop. A chance of showers and a slight chance of Thunderstorms.
Monday night..South winds around 10 knots. Bay and inland waters a light chop. A slight chance of Thunderstorms. A chance of showers after midnight.
Tuesday..South winds around 5 knots then becoming southwest around 10 knots in the afternoon. Bay and inland waters a light chop. A chance of showers and a slight chance of Thunderstorms.
GMZ800 Synopsis For The Coastal Waters From Bonita Beach To Suwannee River- 836 Pm Edt Thu Apr 9 2020
Synopsis..A weak cold front will move through the waters Friday with some showers and storms possible. West winds ahead of the front will shift to the northwest and north Friday night in the wake of the front, with winds becoming northeast to east on Saturday as high pressure to the north shifts east into the atlantic. Winds will become southeast to south with speeds increasing to cautionary or small craft levels during Sunday and Monday as the gradient tightens ahead of the approaching cold front, with increasing chances for showers and storms expected as the front moves into and stalls out across the waters through the period.


7 Day Forecast for Marine Location Near Kenneth City, FL
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location: 27.8, -82.72     debug


Area Discussion for - Tampa Bay, FL
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FXUS62 KTBW 092358 AFDTBW

Area Forecast Discussion National Weather Service Tampa Bay Ruskin FL 758 PM EDT Thu Apr 9 2020

UPDATE. Pattern change ahead tonight into Friday as upper ridge gets shunted southward while Great Lakes upper trough digs into the Deep South. Surface cold front sinking along the Northern Gulf Coast this evening to slowly sag into the area Friday bringing a chance of much needed rain. Latest forecast on track with warm and muggy overnight conditions along with increasing clouds.

AVIATION. Models redevelop areas of MVFR cigs tonight on westerly winds especially aft 06Z then bring showers possible aft 12Z ahead of weak cold front as winds veer NW-N.

Prev Discussion. /issued 244 PM EDT Thu Apr 9 2020/

.Increasing Rain Chances Early Next Week.

DISCUSSION (Tonight - Next Thursday) . High pressure draped across the southern peninsula this afternoon will move south of the state tonight as a cold front approaches from the north with the front moving into the region during the day on Friday. As the front approaches clouds will increase across the forecast area tonight. It will be a warm and muggy night with lows in the upper 60s to lower 70s.

On Friday the front will move south into the forecast area bringing with it increasing rain chances, first across the Nature coast during the early morning hours, with the showers and possibly a storm or two then spreading south across the remainder of the forecast area during the day. Temperatures on Friday will be cooler especially across northern areas where highs in the lower to mid 70s can be expected with lower 80s central and south. As the front moves to the south, showers will come to an end across the area Friday night as some drier air works it way in from the north with post frontal low temperatures falling into the upper 40s to around 50 across the Nature coast, 50s central zones, and lower 60s across southwest Florida.

During the weekend the frontal boundary to the south will lift back to the north as a warm front as strong low pressure develops over the southern Plains and lower Mississippi valley with some additional showers (Pops 20%) possible within the moist and unstable air mass. Warm air advection will support warm to hot temperatures with highs on Saturday in the lower to mid 80s, then climbing into the upper 80s to lower 90s on Easter Sunday.

On Monday another cold front is expected to move into the northern peninsula during the day as the aforementioned deepening storm system moves up the eastern seaboard. Similar to yesterday models show this front stalling out across the north-central Florida peninsula through mid week as the front becomes parallel to the upper level southwesterly flow. The stalling front combined with moisture pooling along it and some upper level energy moving across the area will support some unsettled weather with chances for showers and isolated storms with the possibility of some beneficial rainfall especially from the I-4 corridor north into the Nature coast where the highest rain chances (Pops 40-60%) will reside closest to the stalled frontal boundary. In addition to the rain chances a few strong to severe storms may be possible across the northern Nature coast on Monday as well so stay tuned to later forecasts. Temperatures will remain well above normal with overnight lows generally in the upper 60s to lower 70s, with daytime highs in the lower to mid 80s along the coast, and upper 80s to lower 90s inland.

MARINE . High pressure across the southern peninsula this afternoon will move south of the waters tonight as a cold front moves into and south through the waters on Friday bringing with it chances for showers and isolated storms. West winds ahead of the front tonight will shift to the northwest and north during Friday and Friday night in the wake of the front, with winds becoming northeast to east on Saturday as high pressure to the north shifts eastward into the Atlantic. Winds will become southeast to south with speeds increasing into the Cautionary or Small Craft range on Sunday and Monday with some rough boating conditions developing as the gradient tightens ahead of a stronger cold front which will be approaching on Monday with increasing chances for showers and storms as the front moves into and then stalls out across the waters through mid week.

FIRE WEATHER . Humidity values will remain above critical levels through Thursday. Some drier air will move into the region on Saturday in the wake of a cold front, but Red Flag conditions are not expected. Increasing moisture is expected on Sunday and into early next week as a breezy to windy southerly wind flow develops over the region ahead of the next cold front. This next cold front will move into the region on Monday, then will likely stall out across the area through Wednesday with increased chances for shower and storms. Increasing 20 foot winds and transport winds ahead of the front will support high dispersions across the forecast area on Sunday and Monday, otherwise no other fire weather hazards are expected at this time.

Preliminary Point Temps/PoPs. TPA 73 80 61 81 / 10 30 0 10 FMY 74 83 66 84 / 0 30 0 10 GIF 72 81 59 80 / 0 40 0 10 SRQ 73 82 63 82 / 10 30 0 10 BKV 68 78 53 82 / 10 30 0 10 SPG 73 80 63 80 / 10 30 0 10

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

Davis


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
CLBF1 5 mi116 min WSW 9.9 G 11 78°F 1009.5 hPa
SAPF1 - 8726520 - St. Petersburg, FL 6 mi50 min WSW 7 G 9.9 77°F 78°F1010.1 hPa (+0.0)
OPTF1 - 8726607 - Old Port Tampa, FL 10 mi50 min WSW 8 G 9.9 78°F 79°F1010.1 hPa (+0.0)
GCTF1 11 mi50 min 78°F 1010 hPa (+0.0)72°F
MTBF1 12 mi50 min W 9.9 G 11 77°F 1010.2 hPa (-0.3)73°F
CWBF1 - 8726724 - Clearwater Beach, FL 14 mi56 min SSW 11 G 12 76°F 81°F1010 hPa
PMAF1 14 mi50 min 77°F 84°F1010.1 hPa (-0.3)
SKCF1 17 mi74 min SW 14 G 19
42098 18 mi50 min 77°F2 ft
MCYF1 18 mi50 min 82°F
TPAF1 - 8726694 - TPA Cruise Terminal 2, Tampa, FL 18 mi50 min SW 8.9 G 13
TSHF1 - 8726667 - East Bay Causeway, FL 18 mi50 min SSW 6 G 12
FHPF1 - Fred Howard Park, FL 25 mi116 min WSW 9.9 G 12 77°F 1010.6 hPa
ARPF1 - APK - Aripeka, FL 44 mi116 min W 9.9 G 12 86°F 1009.8 hPa
42013 - C10 - Navy-2 45 mi80 min WSW 5.8 G 7.8 77°F 76°F1011.1 hPa

Wind History for St. Petersburg, FL
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Albert Whitted Airport, FL5 mi57 minW 510.00 miA Few Clouds78°F73°F85%1009.4 hPa
St. Petersburg/Clearwater Airport, FL8 mi57 minWSW 910.00 miPartly Cloudy79°F71°F77%1009.8 hPa
Macdill Air Force Base, Fl., FL11 mi54 minWSW 610.00 miFair78°F71°F82%1010.1 hPa
Tampa, Tampa International Airport, FL15 mi57 minSW 810.00 miMostly Cloudy78°F70°F76%1009.9 hPa
Tampa, Peter O Knight Airport, FL16 mi55 minWSW 610.00 miPartly Cloudy79°F75°F89%1010.2 hPa
Tampa, Vandenberg Airport, FL24 mi55 minWSW 410.00 miFair79°F71°F79%1010.2 hPa

Link to 5 minute data for KSPG

Wind History from SPG (wind in knots)
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Last 24hrW7W7W8W6SW6SW8SW9SW7W7W6W5--SW9W11
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1 day agoNW5N4N6N4CalmCalmCalmW3CalmCalmCalmW3W44NW8W64NW7W9W9W10NW4W9W8
2 days agoE14E10E14E10E10E9E8E7E7E7E8E8E8E6E5NE3CalmNE3CalmW3W10W7W9NW8

Tide / Current Tables for Johns Pass, Florida
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Johns Pass
Click for Map
Thu -- 01:49 AM EDT     1.68 feet High Tide
Thu -- 07:12 AM EDT     Sunrise
Thu -- 07:22 AM EDT     0.66 feet Low Tide
Thu -- 08:29 AM EDT     Moonset
Thu -- 01:03 PM EDT     2.21 feet High Tide
Thu -- 07:53 PM EDT     Sunset
Thu -- 08:26 PM EDT     -0.37 feet Low Tide
Thu -- 09:55 PM EDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.31.61.71.61.41.10.80.70.711.41.82.12.22.11.81.40.80.3-0.1-0.3-0.3-0.10.3

Tide / Current Tables for Old Tampa Bay Entrance (Port Tampa), Florida Current
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Old Tampa Bay Entrance (Port Tampa)
Click for Map
Thu -- 02:18 AM EDT     1.42 knots Max Flood
Thu -- 05:43 AM EDT     -0.00 knots Slack
Thu -- 07:11 AM EDT     Sunrise
Thu -- 08:28 AM EDT     Moonset
Thu -- 08:30 AM EDT     -0.92 knots Max Ebb
Thu -- 11:10 AM EDT     0.00 knots Slack
Thu -- 01:55 PM EDT     1.26 knots Max Flood
Thu -- 04:46 PM EDT     -0.00 knots Slack
Thu -- 07:52 PM EDT     Sunset
Thu -- 08:40 PM EDT     -1.63 knots Max Ebb
Thu -- 09:54 PM EDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.41.11.41.310.4-0.2-0.6-0.9-0.9-0.6-0.10.51.11.310.5-0.1-0.8-1.3-1.6-1.6-1.4-1

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 (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 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.