Saturday, May30, 2020
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Marine Weather and Tides
South Highpoint, 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 6:33AMSunset 8:23PM Saturday May 30, 2020 3:25 AM EDT (07:25 UTC) Moonrise 12:59PMMoonset 1:21AM Illumination 57% 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- 804 Pm Edt Fri May 29 2020
Rest of tonight..Northwest winds around 5 knots then becoming east late in the evening, then becoming southeast after midnight. Bay and inland waters smooth.
Saturday..Southeast winds around 5 knots then becoming west around 10 knots in the afternoon. Bay and inland waters a light chop. Scattered Thunderstorms in the afternoon.
Saturday night..Northwest winds around 5 knots then becoming north toward morning. Bay and inland waters smooth.
Sunday..Northwest winds around 10 knots. Bay and inland waters a light chop. Isolated Thunderstorms in the afternoon.
Sunday night..North winds around 10 knots. Bay and inland waters a light chop.
Monday..Northeast winds around 10 knots. Bay and inland waters a light chop. Scattered Thunderstorms in the afternoon.
Monday night..East winds around 15 knots. Bay and inland waters a moderate chop. Isolated Thunderstorms in the evening.
Tuesday..East winds around 15 knots. Bay and inland waters a moderate chop. Isolated Thunderstorms in the afternoon.
Tuesday night..East winds around 15 knots. Bay and inland waters a moderate chop.
Wednesday..East winds around 15 knots diminishing to 5 to 10 knots in the afternoon. Bay and inland waters a moderate chop.
GMZ800 Synopsis For The Coastal Waters From Bonita Beach To Suwannee River- 804 Pm Edt Fri May 29 2020
Synopsis..Surface high pressure will continue to across the gulf waters keeping mostly light winds and calm seas through the weekend. However, isolated to scattered showers and Thunderstorms each day will be capable of producing frequent lightning, locally gusty winds, and rough seas. Early next week a breezy east to northeast flow will setup with winds speeds approaching exercise caution criteria.


7 Day Forecast for Marine Location Near South Highpoint, FL
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location: 27.94, -82.72     debug


Area Discussion for - Tampa Bay, FL
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FXUS62 KTBW 300551 AFDTBW

Area Forecast Discussion National Weather Service Tampa Bay Ruskin FL 151 AM EDT Sat May 30 2020

AVIATION. Mainly VFR conditions through the period. We will see VCTS once again through the afternoon and evening hours with brief MVFR conditions possible.

Prev Discussion. /issued 757 PM EDT Fri May 29 2020/

UPDATE . Upper trough lifting from the Great Lakes with weaker and warmer SW flow aloft this afternoon as enhanced upper energy has moved NE of the area. Diurnal convection mainly seabreeze driven not as organized or strong as yesterday. This convection to continue to wane and drift mainly inland on numerous outflow boundaries. Overnight, continue to expect clearing skies with temps slightly warmer than seasonal averages. Will adjust grids and forecasts based on radar trends otherwise is fair shape.

AVIATION . VCTS waning this evening with VFR conditions and light winds tonight. Another round of VCTS Saturday afternoon.

Prev Discussion . /issued 200 PM EDT Fri May 29 2020/

SYNOPSIS . Strong stacked ridging continues to reside over the Western Atlantic. Meanwhile, a highly amplified pattern over the US with ridging out West and troughing over the eastern half of the CONUS. Associated surface cold fronts slowly work their way southeast over the upcoming weekend. Finally, the tropical wave to the east- southwest Bermuda, which has the potential of subtropical development, will quickly get pulled off to the north and away from the CONUS in the coming days as it becomes sandwiched between a digging trough in the northwest Atlantic and a large omega block over the north/central Atlantic.

DISCUSSION . Today, surface ridging has built slightly and move north, bringing more of a southerly/southeasterly flow to our area compared to yesterday. This will favor rain chances a little bit farther west towards the I-75 corridor along an area of enhanced convergence formed near the west coast sea breeze. 12Z sounding out of KTBW shows 500mb temps have warmed approximately 1.5 degrees so the threat of hail will be slightly less. However, forecast PWAT and MLCAPE are still impressively high for late May with ~2 inches, and 2500-3000 J/kg, respectively. Furthermore, afternoon forecast RAP soundings for TBW show wind <10 knots from the surface to 250mb. This suggests storm motion solely driven by sea breeze and outflow boundaries. With much of the area receiving 1-2 with localized 3-4 inches of rain yesterday (and a lot of rain the previous day as well for some spots) , the threshold for minor urban and small stream flooding will be lower. So this will be something to watch for.

Low dewpoint depressions and calm winds will promote some patchy fog north of I-4 and inland tomorrow morning. Meanwhile, the ridge will axis will be located across the Suncoast, 1000mb-700mb flow becomes light and variable in this location so initial storm development will be favored across the spine of the peninsula in Central FL. However, weak/moderate southwest flow across the Nature Coast will promote a few earlier showers/storms in this area. Later tomorrow, a weak upper level trough stretched across the panhandle through the carolinas will push eastward. At the surface, an associated weak frontal boundary will sag south into the Big Bend of FL by Sunday morning. Westerly low-level flow will usher in relatively drier air which will limit rain and thunderstorm coverage some, especially for our western counties.

This front will be very weak and nearly stalled out across our area on Sunday before very broad surface high pressure builds across the eastern half of the CONUS. This reinforcing high pressure will push it south-southwestward as a backdoor front. This will bring breezy easterly winds to the area by Monday Night or Tuesday and much drier air with less oppressive humidity, especially along and north of I-4 corridor. Rain chances will still be possible in the region of higher PWAT (South Central and Southwest FL) through mid-week. The enhanced easterly flow will also promote more showers/storms over the Gulf waters just about anytime of day. Models diverge by Friday but it does appear moisture will begin to get advected back northward as the western flank of the ridge axis begins to degrade.

MARINE . Surface high pressure will continue to across the Gulf waters keeping mostly light winds and calm seas through the weekend. However, isolated to scattered showers and thunderstorms each day will be capable of producing frequent lightning, locally gusty winds, and rough seas. Early next week a breezy east to northeast flow will setup with winds speeds approaching exercise caution criteria.

FIRE WEATHER . Ample moisture will preclude any major fire weather concerns through the weekend with overall weak winds. Daily afternoon showers and thunderstorms will be capable of frequent lightning and gusty winds from outflow boundaries. Some patchy fog will be possible late overnight into Saturday morning for Pasco county northward.

Preliminary Point Temps/PoPs. TPA 89 75 89 74 / 30 10 20 10 FMY 89 74 89 74 / 50 30 30 10 GIF 89 72 89 72 / 60 30 50 10 SRQ 88 75 89 74 / 30 10 10 0 BKV 90 71 90 71 / 30 10 20 10 SPG 90 75 89 74 / 20 10 10 0

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

SHORT TERM/AVIATION/MARINE/FIRE WEATHER . 27/Shiveley MID TERM/LONG TERM/DECISION SUPPORT . 04/Sobien


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
CWBF1 - 8726724 - Clearwater Beach, FL 6 mi55 min E 7 G 8.9
OPTF1 - 8726607 - Old Port Tampa, FL 11 mi55 min E 1 G 1.9 76°F 84°F1017.3 hPa
SAPF1 - 8726520 - St. Petersburg, FL 13 mi55 min ESE 1.9 G 4.1 78°F 82°F1017.4 hPa
CLBF1 14 mi91 min Calm G 2.9 77°F 1017.1 hPa
FHPF1 - Fred Howard Park, FL 15 mi91 min E 7 G 8 77°F 1018.1 hPa
TPAF1 - 8726694 - TPA Cruise Terminal 2, Tampa, FL 15 mi55 min Calm G 1.9
EBEF1 16 mi145 min 74°F 87°F1017.9 hPa
GCTF1 16 mi55 min 78°F 1017.2 hPa72°F
TSHF1 - 8726667 - East Bay Causeway, FL 16 mi61 min Calm G 1.9
MTBF1 20 mi55 min ESE 7 G 8 77°F 1017.3 hPa71°F
PMAF1 22 mi55 min 75°F 88°F1017.1 hPa
42098 27 mi55 min 82°F1 ft

Wind History for Clearwater Beach, FL
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
St. Petersburg/Clearwater Airport, FL3 mi32 minN 010.00 miFair77°F72°F85%1016.8 hPa
Tampa, Tampa International Airport, FL10 mi32 minN 010.00 miFair76°F68°F77%1017 hPa
Macdill Air Force Base, Fl., FL12 mi29 minN 010.00 miFair73°F70°F91%1017.2 hPa
Albert Whitted Airport, FL13 mi32 minE 310.00 miFair78°F75°F90%1016.3 hPa
Tampa, Peter O Knight Airport, FL14 mi30 minN 07.00 miOvercast0°F0°F%1017.3 hPa
Tampa, Vandenberg Airport, FL20 mi30 minN 04.00 miFog/Mist70°F69°F100%1017.3 hPa

Link to 5 minute data for KPIE

Wind History from PIE (wind in knots)
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Last 24hrSE5S4SE7SE7SE10SE10SE11SE9SE8E9E10--3W7W8SW6--E3NE4NE5NE3E6E6Calm
1 day agoSE6SE7SE5SE7S3S6S7S13S12--SW13SW8SW10W9E20
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2 days agoCalmCalmCalmCalmSW3SW7SW10SW10SW9SW11SW11
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Tide / Current Tables for Safety Harbor, Old Tampa Bay, Tampa Bay, Florida
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Safety Harbor
Click for Map
Sat -- 02:20 AM EDT     Moonset
Sat -- 05:14 AM EDT     0.04 feet Low Tide
Sat -- 06:34 AM EDT     Sunrise
Sat -- 12:07 PM EDT     2.10 feet High Tide
Sat -- 01:58 PM EDT     Moonrise
Sat -- 05:19 PM EDT     1.59 feet Low Tide
Sat -- 08:22 PM EDT     Sunset
Sat -- 10:31 PM EDT     2.37 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.91.510.50.200.10.40.81.31.722.12.121.81.71.61.61.822.22.42.4

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
Sat -- 12:58 AM EDT     -1.09 knots Max Ebb
Sat -- 02:19 AM EDT     Moonset
Sat -- 05:07 AM EDT     0.00 knots Slack
Sat -- 06:34 AM EDT     Sunrise
Sat -- 08:22 AM EDT     1.06 knots Max Flood
Sat -- 11:59 AM EDT     -0.00 knots Slack
Sat -- 01:58 PM EDT     Moonrise
Sat -- 02:36 PM EDT     -0.57 knots Max Ebb
Sat -- 05:20 PM EDT     0.00 knots Slack
Sat -- 07:44 PM EDT     0.57 knots Max Flood
Sat -- 08:21 PM EDT     Sunset
Sat -- 10:24 PM EDT     -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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-1-1.1-1-0.8-0.5-0.10.40.8110.80.4-0-0.4-0.5-0.6-0.4-0.10.20.50.60.40.1-0.2

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 (3,6,7,8)
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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.