Thursday, July9, 2020
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Marine Weather and Tides
Apollo Beach, 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 6:39AMSunset 8:30PM Thursday July 9, 2020 6:48 AM EDT (10:48 UTC) Moonrise 10:59PMMoonset 9:48AM Illumination 84% Phase: Waning Gibbous; Moon at 19 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- 354 Am Edt Thu Jul 9 2020
Today..West winds around 10 knots. Bay and inland waters a light chop. Isolated Thunderstorms in the morning.
Tonight..West winds around 10 knots. Bay and inland waters a light chop. Isolated Thunderstorms after midnight.
Friday..West winds 5 to 10 knots increasing to around 15 knots in the afternoon. Bay and inland waters a moderate chop. Scattered Thunderstorms.
Friday night..West winds around 15 knots. Bay and inland waters a moderate chop. Scattered Thunderstorms in the evening, then isolated Thunderstorms after midnight.
Saturday..West winds around 15 knots. Bay and inland waters a moderate chop. Numerous Thunderstorms in the morning, then scattered Thunderstorms in the afternoon.
Saturday night..West winds around 10 knots. Bay and inland waters a light chop. Scattered Thunderstorms.
Sunday..West winds around 10 knots. Bay and inland waters a light chop. Numerous Thunderstorms in the morning, then scattered Thunderstorms in the afternoon.
Sunday night..Southwest winds around 10 knots. Bay and inland waters a light chop. Isolated Thunderstorms in the evening, then scattered Thunderstorms after midnight.
Monday..West winds around 10 knots. Bay and inland waters a light chop. Scattered Thunderstorms.
GMZ800 Synopsis For The Coastal Waters From Bonita Beach To Suwannee River- 354 Am Edt Thu Jul 9 2020
Synopsis..Outside of some coastal showers and possibly Thunderstorms early each day, overall conditions remain benign for coastal waters over the next few days with high pressure off to the west leading to westerly flow. Thunderstorms could produce locally hazardous boating conditions.


7 Day Forecast for Marine Location Near Apollo Beach, FL
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location: 27.79, -82.52     debug


Area Discussion for - Tampa Bay, FL
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FXUS62 KTBW 090752 AFDTBW

Area Forecast Discussion National Weather Service Tampa Bay Ruskin FL 352 AM EDT Thu Jul 9 2020

SHORT TERM. As an area of low pressure continues to propagate off to the NE just off the coast of the Mid-Atlantic states, light synoptic flow remains over the FL peninsula with a strong ridge across the desert SW. This upper-level ridge is reinforcing surface high pressure over the central Gulf of Mexico. Anticyclonic (clockwise) flow around the high is leading to WNW winds across West Central and Southwest Florida, continuing to advect surface moisture from the Gulf across the state. While not a textbook case of climatological norms for this time of year, this sort of pattern will continue to favor coastal showers and, perhaps, a couple isolated thunderstorms in the morning hours. The deepest moisture is situated across our northern coastal waters and Lee and Citrus county. As such, the greatest chance for storms early will be along the Nature Coast. However, the flow is conducive for storms and subsequent moisture to drift further southward, so points near the coast all the way down to Tampa Bay will have a chance to see a few showers and thunderstorms through the morning hours. As the day progresses, rain chances shift inland as daytime heating promotes more widespread destabilization across the interior. These storms should move off to the ESE and exit our area late in the afternoon to early evening.

With temperatures remaining generally in the 90s, a very moist airmass (dewpoints in the mid-70s), and only modest rain chances across our area today, heat indices will most certainly climb into the triple digits. Today's setup favors heat indices climbing above 108 for many of our counties, prompting the need for a Heat Advisory for part of the area for the afternoon hours. If spending any prolonged periods of time outdoors today, remember to take precautions to protect yourself from heat exhaustion and heat stroke.

LONG TERM. We will have to continue to monitor this pattern over the coming days, too. Westerly flow will continue to bring a similar setup each afternoon into the middle of next week, with subtle changes. While the ridge builds today, a weak trough axis will begin to take shape on Friday, causing heights to fall slightly across the Florida peninsula as early as late tomorrow. This will provide an environment conducive for ascent across the parts of the peninsula. Unfortunately, shower and thunderstorm activity will generally remain on the fringes of our area during the afternoon. Heat indices will continue to be on the edge of Heat Advisory criteria for the next few days during the afternoon hours.

There is some hope on the horizon, however. Southwest flow should return late in the weekend, increasing the rain chances for Sunday and Monday. This WSW flow should persist into the middle of next week before, at last, the subtropical high builds back over the peninsula, and easterly flow may return at the very end of the forecast period. Scattered showers and thunderstorms will again be most likely in the afternoon to evening hours across our area, a welcome change from the pattern we have found ourselves in for the last few weeks.

AVIATION. VFR conditions prevail with surface high pressure situated off to the West. Some coastal showers (possibly thunderstorms) may form near the coast through the morning hours and drift towards KTPA, KPIE. Rain chances shift inland as the day progresses, keeping coastal terminals dry for the afternoon. KLAL could still see showers or thunderstorms lasting into the afternoon before all sites return to dry conditions with light flow overnight.

MARINE. Outside of some coastal showers early each day, overall conditions remain benign for coastal waters over the next few days with high pressure off to the West leading to westerly flow.

FIRE WEATHER. Fire weather concerns remain low for the next several days as high pressure remains in control, leading to westerly winds, coastal showers early that shift inland, and plenty of moisture to keep RH values well above critical thresholds.

Preliminary Point Temps/PoPs. TPA 92 79 91 80 / 30 30 50 40 FMY 94 79 93 79 / 10 20 30 20 GIF 94 76 93 77 / 30 20 60 20 SRQ 92 79 91 79 / 10 20 40 30 BKV 91 76 91 76 / 30 40 50 40 SPG 92 79 91 79 / 20 20 50 30

TBW WATCHES/WARNINGS/ADVISORIES. FL . Heat Advisory from noon today to 6 PM EDT this evening for Coastal Hernando-Coastal Hillsborough-Coastal Manatee- Coastal Pasco-Coastal Sarasota-DeSoto-Hardee-Highlands- Inland Hernando-Inland Hillsborough-Inland Manatee-Inland Pasco-Inland Sarasota-Pinellas-Polk-Sumter.

Gulf waters . None.

SHORT TERM/AVIATION/MARINE/FIRE WEATHER . 97/Flannery MID TERM/LONG TERM/DECISION SUPPORT . 99


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
GCTF1 1 mi49 min 84°F 1013.6 hPa (+0.3)75°F
OPTF1 - 8726607 - Old Port Tampa, FL 5 mi49 min WNW 9.9 G 13 84°F 87°F1013.7 hPa (+0.3)
SAPF1 - 8726520 - St. Petersburg, FL 6 mi49 min NNW 2.9 G 5.1 83°F 86°F1013.9 hPa (+0.0)
CLBF1 10 mi55 min NW 4.1 G 8 82°F 1013.1 hPa
MTBF1 10 mi49 min NNW 11 G 13 83°F 1013.7 hPa (+0.0)74°F
SKCF1 10 mi55 min WNW 9.7 G 14
EBEF1 11 mi121 min 83°F 90°F1013.1 hPa
PMAF1 11 mi49 min 84°F 1013.8 hPa (+0.4)
TPAF1 - 8726694 - TPA Cruise Terminal 2, Tampa, FL 11 mi55 min W 4.1 G 7
TSHF1 - 8726667 - East Bay Causeway, FL 11 mi55 min W 7 G 8.9
CWBF1 - 8726724 - Clearwater Beach, FL 21 mi49 min WNW 15 G 17 84°F 88°F1014 hPa (+0.5)
42098 26 mi23 min 87°F3 ft
FHPF1 - Fred Howard Park, FL 29 mi115 min WNW 12 G 14 84°F 1013.9 hPa
42013 - C10 - Navy-2 48 mi79 min NW 14 G 16 85°F 87°F1014.2 hPa

Wind History for Old Port Tampa, FL
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Macdill Air Force Base, Fl., FL5 mi1.9 hrsW 510.00 miFair82°F74°F80%1013.5 hPa
Albert Whitted Airport, FL6 mi56 minNW 610.00 miFair83°F77°F82%1013 hPa
Tampa, Peter O Knight Airport, FL9 mi74 minNW 310.00 miFair82°F78°F89%1013.9 hPa
St. Petersburg/Clearwater Airport, FL12 mi56 minWNW 710.00 miA Few Clouds82°F75°F82%1013.6 hPa
Tampa, Tampa International Airport, FL12 mi56 minNW 310.00 miPartly Cloudy81°F72°F74%1013.7 hPa
Tampa, Vandenberg Airport, FL18 mi54 minN 07.00 miFair73°F73°F100%1013.9 hPa
Plant City, Plant City Municipal Airport, FL24 mi74 minW 510.00 miFair77°F77°F100%1014.6 hPa

Link to 5 minute data for KMCF

Wind History from MCF (wind in knots)
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Last 24hrW4SW3SW7SW6W6W7W11
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1 day agoCalmS6S8SW4S8S12SW12SW10
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2 days agoSE5S6SE7S8S12S12SW12S11S16SW13SW11W5S6E9E4CalmE4CalmSE4SE5CalmCalmSE4S6

Tide / Current Tables for Shell Point, Tampa Bay, Florida
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Shell Point
Click for Map
Thu -- 12:21 AM EDT     0.01 feet Low Tide
Thu -- 06:41 AM EDT     Sunrise
Thu -- 07:21 AM EDT     1.39 feet High Tide
Thu -- 10:47 AM EDT     Moonset
Thu -- 11:05 AM EDT     1.19 feet Low Tide
Thu -- 05:06 PM EDT     2.19 feet High Tide
Thu -- 08:28 PM EDT     Sunset
Thu -- 11:58 PM EDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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000.20.50.81.11.31.41.41.31.21.21.21.41.71.92.12.22.11.91.61.20.80.5

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 -- 01:53 AM EDT     0.00 knots Slack
Thu -- 04:54 AM EDT     1.01 knots Max Flood
Thu -- 06:41 AM EDT     Sunrise
Thu -- 08:25 AM EDT     -0.00 knots Slack
Thu -- 10:33 AM EDT     -0.46 knots Max Ebb
Thu -- 10:47 AM EDT     Moonset
Thu -- 12:45 PM EDT     0.00 knots Slack
Thu -- 03:35 PM EDT     0.89 knots Max Flood
Thu -- 06:22 PM EDT     -0.00 knots Slack
Thu -- 08:29 PM EDT     Sunset
Thu -- 10:18 PM EDT     -1.24 knots Max Ebb
Thu -- 11:58 PM EDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-1-0.50.10.60.910.90.60.2-0.2-0.4-0.4-0.30.10.50.80.90.60.2-0.3-0.7-1.1-1.2-1.2

Weather Map
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wmap_A
GEOS Local Image of    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 (6,6,7,8)
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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.