Monday, January20, 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 7:20AMSunset 6:02PM Monday January 20, 2020 7:45 PM EST (00:45 UTC) Moonrise 3:32AMMoonset 2:29PM Illumination 18% Phase: Waning Crescent; Moon at 25 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- 229 Pm Est Mon Jan 20 2020
Tonight..North winds around 15 knots. Bay and inland waters a moderate chop.
Tuesday..North winds 10 to 15 knots increasing to around 20 knots in the afternoon. Bay and inland waters choppy.
Tuesday night..North winds around 20 knots. Bay and inland waters choppy.
Wednesday..North winds around 15 knots. Bay and inland waters a moderate chop.
Wednesday night..Northeast winds around 15 knots. Bay and inland waters a moderate chop.
Thursday..East winds around 10 knots. Bay and inland waters a light chop.
Thursday night..Southeast winds around 10 knots. Bay and inland waters a light chop.
Friday..Southwest winds around 10 knots. Bay and inland waters a light chop. A chance of showers.
Friday night..West winds around 10 knots then becoming northwest after midnight. Bay and inland waters a light chop. A chance of showers in the evening, then a slight chance of showers after midnight.
Saturday..Northwest winds around 10 knots. Bay and inland waters a light chop.
GMZ800 Synopsis For The Coastal Waters From Bonita Beach To Suwannee River- 229 Pm Est Mon Jan 20 2020
Synopsis.. Interaction between a cold front over southern florida and strong high pressure over the central u.s. Is producing gusty northerly winds across the eastern gulf of mexico. Will continue to hold scec for all waters today and tonight. Onshore wave action will produce a high risk of rip currents at local beaches through the day. The gradient further tightens on Tuesday afternoon between the high pressure over the ohio river valley and a trough of low pressure near the bahamas, which will likely bring conditions back up to sca level continuing through Wednesday afternoon. The high moves off the mid- atlantic coast by Thursday which will bring the winds around to the east and will decrease below any sca or scec level to close out the week.


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 201919 AFDTBW

Area Forecast Discussion National Weather Service Tampa Bay Ruskin FL 219 PM EST Mon Jan 20 2020

. FREEZING TEMPERATURES EXPECTED ALONG NATURE COAST TONIGHT .

DISCUSSION. A highly amplified upper level pattern has set up over the CONUS to start out the week. Sharp ridging extends from the four corners region northward into Saskatchewan Canada. Farther east, a closed upper low spins over Iowa with broad upper troughing extending over the eastern half of the U.S. This upper low will transit southeast through the base of the trough over the next couple of days bringing more cold air with it down from Canada. The upper low will exit the southeast coast late Tuesday into Wednesday with upper ridging building through the Mississippi River Valley. This upper pattern will be the perfect set up to advect more cold air into the region on Tuesday night/Wednesday morning. The ridge axis moves along the east coast late Wednesday into Thursday, which will start the transition to a warming trend through the end of the week. Another upper low and trough approaches the east coast through the weekend and will lend support to the next cold front.

On the surface, the trailing edge of a cold front currently extends across the Florida Keys. Strong high pressure over the central U.S. will build in behind this front bringing clear skies and much colder weather to the region over the next few days. The daytime highs on Tuesday and Wednesday will top out only in the upper 50's to mid 60's. The coldest weather we have seen this winter is expected tonight and Tuesday night. Temperatures below freezing will be possible the next 2 nights over the inland portions of the counties along the Nature Coast and freezing temps possible farther south and inland on Tuesday night. Winds chills will bottom out around 28 to 35 degrees over the inland counties north of I-4 tonight and 25 to 30 degrees for most of west central and southwest Florida Wednesday morning. A Freeze Warning is in effect for Levy County during the early morning hours on Tuesday and a Freeze Watch for Hernando County northward early Wednesday morning. Further Freeze Warnings and Wind Chill Advisories will likely be needed for Tuesday night into Wednesday morning.

The next weather system develops through the Mississippi River Valley with a cold front extending into the central Gulf of Mexico late Thursday into Friday. Winds turn southeast, then southwest ahead of this system and will warm things up on Thursday and Friday. This system will move east with the cold front moving across Florida on Friday bringing increasing rain chances. Another slight cool down is expected Saturday and continuing into the beginning of next week.

AVIATION. VFR conditions with northerly winds between 8-10 knots through the period.

MARINE. Interaction between a cold front over southern Florida and strong high pressure over the central U.S. is producing gusty northerly winds across the eastern Gulf of Mexico. Have let the SCA expire at 10 am, but will continue to hold SCEC for all waters today and tonight. Onshore wave action will produce a high risk of rip currents at local beaches through the day. The gradient further tightens on Tuesday afternoon between the high pressure over the Ohio River Valley and a trough of low pressure near the Bahamas, which will likely bring conditions back up to SCA level continuing through Wednesday afternoon. The high moves off the mid-Atlantic coast by Thursday which will bring the winds around to the east and will decrease below any SCA or SCEC level to close out the week.

FIRE WEATHER. Colder and drier air has filtered into the area behind the front today, with relative humidity percentages dropping into the mid 30s for a few hours in some locations this afternoon and again Tuesday afternoon. However, wind speeds are not expected to be high enough to warrant the issuance of any Red Flag Warnings.

Preliminary Point Temps/PoPs. TPA 40 56 36 60 / 0 0 0 0 FMY 46 61 37 63 / 0 0 0 0 GIF 40 56 34 60 / 0 0 0 0 SRQ 41 58 37 62 / 0 0 0 0 BKV 34 56 31 60 / 0 0 0 0 SPG 46 57 38 61 / 0 0 0 0

TBW WATCHES/WARNINGS/ADVISORIES. FL . Freeze Watch from late Tuesday night through Wednesday morning for Coastal Citrus-Coastal Hernando-Coastal Levy-Inland Citrus-Inland Hernando-Inland Levy-Sumter.

High Rip Current Risk until 9 PM EST this evening for Coastal Charlotte-Coastal Hillsborough-Coastal Lee-Coastal Manatee- Coastal Sarasota-Pinellas.

Freeze Warning from 3 AM to 9 AM EST Tuesday for Coastal Levy- Inland Levy.

Gulf waters . None.



DISCUSSION/AVIATION/MARINE/FIRE WEATHER . 74/Wynn DECISION SUPPORT . 69/Close


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
CLBF1 5 mi112 min NNW 5.1 G 8.9 55°F 1021 hPa
SAPF1 - 8726520 - St. Petersburg, FL 6 mi46 min NNW 7 G 9.9 1022.4 hPa (+1.1)
OPTF1 - 8726607 - Old Port Tampa, FL 10 mi46 min N 15 G 18 56°F 68°F1022.6 hPa (+1.3)
GCTF1 11 mi46 min 56°F 1022.3 hPa (+1.1)42°F
MTBF1 12 mi46 min N 14 G 17 55°F 1022.5 hPa (+0.9)40°F
CWBF1 - 8726724 - Clearwater Beach, FL 14 mi46 min N 16 G 20 56°F 66°F1023.1 hPa (+1.1)
PMAF1 14 mi46 min 56°F 64°F1022.1 hPa (+1.0)
42098 18 mi46 min 67°F4 ft
MCYF1 18 mi46 min 69°F
TPAF1 - 8726694 - TPA Cruise Terminal 2, Tampa, FL 18 mi46 min NNW 5.1 G 6
TSHF1 - 8726667 - East Bay Causeway, FL 18 mi46 min NNW 6 G 11
FHPF1 - Fred Howard Park, FL 25 mi112 min N 13 G 14 56°F 1022.8 hPa

Wind History for St. Petersburg, FL
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Albert Whitted Airport, FL5 mi53 minNNW 810.00 miFair55°F41°F59%1021.7 hPa
St. Petersburg/Clearwater Airport, FL8 mi53 minNNW 1010.00 miFair54°F42°F64%1022.6 hPa
Tampa, Tampa International Airport, FL15 mi53 minNNW 710.00 miA Few Clouds53°F37°F55%1022.7 hPa
Tampa, Peter O Knight Airport, FL16 mi51 minN 710.00 miOvercast55°F42°F63%1022.7 hPa
Tampa, Vandenberg Airport, FL24 mi51 minNNW 310.00 miFair52°F41°F67%1022.7 hPa

Link to 5 minute data for KSPG

Wind History from SPG (wind in knots)
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Last 24hrN4NW6NW12
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1 day agoS3SE3S7SE10S11S10S9S8S8S7S6S7S7S9S8S9S9S12
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2 days agoE22E20
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E21E20E18E18E17E18E16E14E17E14E13E10E6SE12SE12SE9SE7SE7SE7SE4SW4--

Tide / Current Tables for Johns Pass, Florida
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Johns Pass
Click for Map
Mon -- 03:23 AM EST     -0.49 feet Low Tide
Mon -- 03:31 AM EST     Moonrise
Mon -- 07:22 AM EST     Sunrise
Mon -- 11:38 AM EST     1.02 feet High Tide
Mon -- 12:52 PM EST     1.07 feet Low Tide
Mon -- 02:29 PM EST     Moonset
Mon -- 06:01 PM EST     Sunset
Mon -- 07:38 PM EST     2.05 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.4-0-0.3-0.5-0.5-0.3-00.30.60.81111.11.11.21.41.71.9221.91.71.3

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
Mon -- 03:31 AM EST     Moonrise
Mon -- 03:36 AM EST     -1.29 knots Max Ebb
Mon -- 07:06 AM EST     0.00 knots Slack
Mon -- 07:21 AM EST     Sunrise
Mon -- 10:06 AM EST     1.02 knots Max Flood
Mon -- 02:08 PM EST     -0.00 knots Slack
Mon -- 02:28 PM EST     Moonset
Mon -- 03:45 PM EST     -0.16 knots Max Ebb
Mon -- 05:12 PM EST     0.00 knots Slack
Mon -- 06:00 PM EST     Sunset
Mon -- 08:18 PM EST     0.71 knots Max Flood
Mon -- 11:10 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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-0.6-0.9-1.1-1.3-1.3-1.1-0.6-0.10.50.910.90.60.30-0.1-0.2-00.20.50.70.70.40.1

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 (19,4,5,8)
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Ground Weather Radar Station Tampa Bay Area, FL
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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.