Tuesday, March31, 2020
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Marine Weather and Tides
Palm Harbor, 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 7:49PM Tuesday March 31, 2020 9:56 PM EDT (01:56 UTC) Moonrise 11:11AMMoonset 12:32AM Illumination 55% Phase: First Quarter Moon; Moon at 8 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- 236 Pm Edt Tue Mar 31 2020
.small craft exercise caution...
Tonight..West winds 15 to 20 knots then becoming northwest after midnight. Bay and inland waters choppy. A chance of Thunderstorms in the evening.
Wednesday..Northwest winds 15 to 20 knots. Bay and inland waters a moderate chop.
Wednesday night..North winds around 10 knots then becoming northeast after midnight. Bay and inland waters a light chop.
Thursday..Northeast winds around 10 knots then becoming northwest in the afternoon. Bay and inland waters a light chop.
Thursday night..North winds around 10 knots then becoming east after midnight. Bay and inland waters a light chop.
Friday..East winds around 10 knots then becoming west in the afternoon. Bay and inland waters a light chop.
Friday night..North winds around 10 knots then becoming east after midnight. Bay and inland waters a light chop.
Saturday..East winds around 10 knots then becoming southwest around 5 knots in the afternoon. Bay and inland waters a light chop.
Saturday night..Northeast winds around 10 knots then becoming east after midnight. Bay and inland waters a light chop.
Sunday..East winds around 10 knots. Bay and inland waters a light chop. A slight chance of Thunderstorms.
GMZ800 Synopsis For The Coastal Waters From Bonita Beach To Suwannee River- 236 Pm Edt Tue Mar 31 2020
Synopsis.. High pressure continues to ridge over southern florida. Interactions between this high pressure and an approaching cold front from the northwest will produce increasing southwest winds and seas over the eastern gulf of mexico through Wednesday afternoon. This has warranted the issuance of a sca for all eastern gulf coast waters through Wednesday afternoon and high risk of rip currents advisory at local beaches through Wednesday evening. Rain showers and Thunderstorms can be expected later this evening into Wednesday morning. Gusty winds, heavy rainfall and dangerous lightning can be expected in the vicinity of these storms. High pressure builds in behind this front on Wednesday and will cause a shift in winds to the n-nw then E and decreasing through the end of the week. After this front moves through, the winds will remain less than 15 knots and seas 3 feet or less into the weekend. No other marine impacts expected.


7 Day Forecast for Marine Location Near Palm Harbor, FL
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location: 28.1, -82.85     debug


Area Discussion for - Tampa Bay, FL
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FXUS62 KTBW 312356 AFDTBW

Area Forecast Discussion National Weather Service Tampa Bay Ruskin FL 756 PM EDT Tue Mar 31 2020

AVIATION. VFR/MVFR cigs expected through 09Z as a cold front starts to push through. SHRA and VCTS is also expected through 09Z with northern terminals seeing the conditions before southern ones. VFR conditions are expected after that. Winds will remain gusty and out the SW through the rest of the overnight period. Gusts will be around the 20 to 25 knot range. Winds will then shift to the NW and calm down slightly though the day.

Prev Discussion. /issued 223 PM EDT Tue Mar 31 2020/

DISCUSSION . The upper ridge that has been so dominant over Florida the past couple of weeks has flattened out and shifted south. Farther to the northwest, a mid-upper level trough digs south through the Mississippi River Valley. This trough will move eastward over the next 24-36 hours lending support to the next low pressure system expected to influence the weather over Florida later this evening into Wednesday morning. The trough exits into the Atlantic by Wednesday afternoon, which will allow for ridging over the central U.S. to progress eastward through the end of the week and into the weekend.

On the surface, an area of low pressure is moving through MS/GA with a cold front extending southwest through southern AL/GA and Florida panhandle. Radar imagery over that region is showing embedded thunderstorms in the vicinity of this front that will continue moving east through the afternoon and into the evening hours. Latest HRRR guidance has the frontal bands making landfall along the Nature coast between 22-00Z, then moving southeast over Tampa Bay between 01-03Z, and then over southwest Florida around 06Z. Just as we're seeing on radar now, some embedded thunderstorms will be possible with some gusty winds and heavy downpours. This will be a fairly short event with clearing expected by mid-morning on Wednesday.

High pressure builds back in behind this front, bringing pleasant weather through the end of the week and into the weekend. We will get a very brief shot of cooler air on Wednesday and Thursday with closer to seasonal highs on Wednesday and Thursday and even some 50's for early Thursday morning. This cool down doesn't last long as we will be back in a warming trend once again by the weekend and into next week.

MARINE . High pressure continues to ridge over southern Florida. Interactions between this high pressure and an approaching cold front from the northwest will produce increasing southwest winds and seas over the eastern Gulf of Mexico through Wednesday afternoon. This has warranted the issuance of a SCA for all eastern gulf coast waters through Wednesday afternoon and high risk of rip currents advisory at local beaches through Wednesday evening. Rain showers and thunderstorms can be expected later this evening into Wednesday morning. Gusty winds, heavy rainfall and dangerous lightning can be expected in the vicinity of these storms. High pressure builds in behind this front on Wednesday and will cause a shift in winds to the N-NW then E and decreasing through the end of the week. After this front moves through, the winds will remain less than 15 knots and seas 3 feet or less into the weekend. No other marine impacts expected.

FIRE WEATHER . An approaching cold front will bring gusty 20 foot and transport winds with high dispersions along with showers and isolated thunderstorms this afternoon and overnight. Drier and cooler air begins to filter in behind this front on Wednesday and Thursday with some critically low RH values. However winds are expected to stay light precluding any red flag concerns.

Preliminary Point Temps/PoPs. TPA 63 75 57 80 / 50 0 0 0 FMY 69 81 58 83 / 60 0 0 0 GIF 60 77 54 81 / 60 0 0 0 SRQ 66 76 57 81 / 50 0 0 0 BKV 56 74 51 81 / 60 0 0 0 SPG 65 76 59 80 / 50 0 0 0

TBW WATCHES/WARNINGS/ADVISORIES. FL . High Rip Current Risk through Wednesday evening for Coastal Charlotte-Coastal Hillsborough-Coastal Lee-Coastal Manatee- Coastal Sarasota-Pinellas.

Gulf waters . Small Craft Advisory until 11 AM EDT Wednesday for Coastal waters from Bonita Beach to Englewood FL out 20 NM-Coastal waters from Englewood to Tarpon Springs FL out 20 NM- Coastal waters from Tarpon Springs to Suwannee River FL out 20 NM-Waters from Bonita Beach to Englewood FL out 20 to 60 NM-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.




Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
FHPF1 - Fred Howard Park, FL 4 mi122 min WSW 15 G 18 78°F 1008.3 hPa
CWBF1 - 8726724 - Clearwater Beach, FL 8 mi56 min SW 22 G 25 78°F 82°F1008.2 hPa (+0.0)
OPTF1 - 8726607 - Old Port Tampa, FL 23 mi56 min WSW 17 G 25 79°F 82°F1008.3 hPa (-0.4)
ARPF1 - APK - Aripeka, FL 25 mi122 min W 19 G 28 84°F 1007.1 hPa
TPAF1 - 8726694 - TPA Cruise Terminal 2, Tampa, FL 25 mi56 min SW 12 G 17
TSHF1 - 8726667 - East Bay Causeway, FL 25 mi56 min SSW 13 G 21
MCYF1 26 mi56 min 82°F
CLBF1 27 mi62 min WSW 20 G 24 78°F 1007.5 hPa
GCTF1 29 mi56 min 79°F 1007.7 hPa (-0.5)73°F
MTBF1 33 mi56 min W 19 G 23 78°F 1008.2 hPa (-0.5)73°F
PMAF1 35 mi56 min 78°F 83°F1008.3 hPa (-0.4)
42098 36 mi26 min 77°F4 ft

Wind History for Clearwater Beach, FL
(wind in knots)    EDIT      (on/off)   Help
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
St. Petersburg/Clearwater Airport, FL16 mi63 minWSW 18 G 2510.00 miOvercast and Breezy80°F72°F76%1007.9 hPa
Tampa, Tampa International Airport, FL19 mi63 minWSW 19 G 2510.00 miMostly Cloudy and Breezy79°F71°F77%1007.8 hPa
Macdill Air Force Base, Fl., FL24 mi3 hrsSW 16 G 2110.00 miMostly Cloudy80°F72°F79%1008.4 hPa

Link to 5 minute data for KPIE

Wind History from PIE (wind in knots)
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Last 24hrN7N6CalmS4SW4SW5SW5SW6SW5S3S6S11SW12SW15SW12SW16SW17
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1 day agoCalmCalmW3CalmCalmCalmCalmCalmCalmCalmCalmE6E6E5NE7NE7NE7NE5N6W7W8NW9NW8NW6
2 days agoCalmCalmCalmCalmCalmCalmCalmCalmCalmE4E6SE8SE9SE9SE9
G15
S6SE8SW9SW11SW8SW11SW10W6NW6

Tide / Current Tables for Anclote Key, southern end, Florida
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Anclote Key
Click for Map
Tue -- 01:32 AM EDT     Moonset
Tue -- 06:00 AM EDT     2.08 feet High Tide
Tue -- 07:22 AM EDT     Sunrise
Tue -- 10:27 AM EDT     1.11 feet Low Tide
Tue -- 12:10 PM EDT     Moonrise
Tue -- 03:54 PM EDT     2.67 feet High Tide
Tue -- 07:48 PM EDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.20.50.91.41.722.121.71.31.11.11.41.82.22.62.72.52.21.81.30.90.50.2

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
Tue -- 01:30 AM EDT     Moonset
Tue -- 03:54 AM EDT     0.00 knots Slack
Tue -- 07:15 AM EDT     0.71 knots Max Flood
Tue -- 07:21 AM EDT     Sunrise
Tue -- 11:21 AM EDT     -0.00 knots Slack
Tue -- 12:10 PM EDT     Moonrise
Tue -- 12:26 PM EDT     -0.10 knots Max Ebb
Tue -- 01:34 PM EDT     0.00 knots Slack
Tue -- 05:14 PM EDT     0.70 knots Max Flood
Tue -- 07:41 PM EDT     -0.00 knots Slack
Tue -- 07:47 PM EDT     Sunset
Tue -- 11:39 PM EDT     -1.10 knots Max Ebb
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-1.1-0.8-0.6-0.300.40.60.70.70.50.30.1-0.1-0.10.10.30.50.70.60.3-0.2-0.6-0.9-1.1

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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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.