Sunday, September27, 2020
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Marine Weather and Tides
Beacon Square, FL

Version 3.4
NOTICE
8/26/2020 The 7 day forecast is taking about 5 seconds to load but it will eventually load. NOAA is still working on it.
8/18/2020 NOAA continues to have trouble. Wind guest will occasionally be left off graphs. I am working with NOAA to resolve the issue.
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 7:21AMSunset 7:22PM Sunday September 27, 2020 12:32 PM EDT (16:32 UTC) Moonrise 4:22PMMoonset 2:26AM Illumination 79% Phase: Waxing Gibbous; Moon at 10 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- 1008 Am Edt Sun Sep 27 2020
This afternoon..Northeast winds 5 to 10 knots, then becoming southwest early in the afternoon. Bay and inland waters a light chop. Scattered Thunderstorms in the afternoon. Numerous showers late in the afternoon.
Tonight..North winds around 10 knots then becoming southeast in the late evening and overnight. Bay and inland waters a light chop. Scattered Thunderstorms early in the evening, then scattered showers late in the evening. Isolated Thunderstorms in the late evening and overnight.
Monday..Southeast winds around 5 knots then becoming west around 10 knots in the afternoon. Bay and inland waters a light chop. Scattered Thunderstorms. Widespread showers in the afternoon.
Monday night..Northwest winds around 5 knots then becoming east late in the evening, then becoming south around 10 knots after midnight. Bay and inland waters a light chop. Scattered Thunderstorms in the evening, then scattered showers and isolated Thunderstorms after midnight.
Tuesday..Southwest winds 5 to 10 knots increasing to around 15 knots in the afternoon. Bay and inland waters a moderate chop. Scattered Thunderstorms. Numerous showers in the afternoon.
Tuesday night..Northwest winds around 10 knots. Bay and inland waters a light chop. Numerous showers and scattered Thunderstorms in the evening, then scattered showers and isolated Thunderstorms after midnight.
Wednesday..North winds 5 to 10 knots then becoming northwest around 15 knots in the afternoon. Bay and inland waters a moderate chop. Scattered Thunderstorms.
Wednesday night..Northeast winds around 10 knots. Bay and inland waters a light chop. Isolated Thunderstorms in the evening.
Thursday..North winds around 10 knots. Bay and inland waters a light chop. Isolated showers in the afternoon.
GMZ800 Synopsis For The Coastal Waters From Bonita Beach To Suwannee River- 1008 Am Edt Sun Sep 27 2020
Synopsis..Weak high pressure over the region will keep light winds and slight seas over the waters into early next week before an early season cold front pushes through the area Wednesday shifting breezy winds to a northerly direction and building choppy seas.


7 Day Forecast for Marine Location Near Beacon Square, FL
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location: 28.23, -82.77     debug


Area Discussion for - Tampa Bay, FL
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FXUS62 KTBW 271310 AFDTBW

Area Forecast Discussion National Weather Service Tampa Bay Ruskin FL 910 AM EDT Sun Sep 27 2020

UPDATE. Upper shortwave moving through the TN River Valley this morning as seen in water vapor imagery with elongated and sheared vort max extending into the NE and C Gulf of Mexico. These features to move eastward today and impact our local weather. Morning KTBW sounding remains moist with PWATS near 2 inches and very weak steering flow. So expect afternoon convection to develop on seabreeze boundaries then become enhanced by upper support for numerous slow moving thunderstorms this afternoon into evening hours. Some storms could produce localized flooding rainfall amounts and WPC has much of the area in a marginal risk of excessive rainfall today. Latest grids and forecasts highlight the high PoPs, along with warm and humid conditions.

AVIATION. Light winds and VFR conditions expected this morning then afternoon SHRA/TSRA developing with brief and localized MVFR/IFR possible through around 00Z-02Z.

Prev Discussion. /issued 443 AM EDT Sun Sep 27 2020/

DISCUSSION . Interesting couple of days ahead as pattern shift ushers in a change in our weather. Currently, ridging aloft stretches westward across the state in tandem with weak surface ridging. A eastward- moving shortwave over the lower Mississippi Valley will help maintain west to southwest flow aloft over our area in conjunction with the ridging aloft as it slides by to the north today, before a vigorous shortwave trough drops south across the central CONUS Monday and Tuesday before pivoting eastward across the eastern CONUS Wednesday and Thursday. This will shunt the ridge axis aloft to the south and east of the peninsula by mid week as a pronounced cold front moves into the region during the first half of the week. Given abundant moisture in place (PW values above 2 inches), areas of heavier rainfall will be possible as the front decelerates while traversing the peninsula as surface boundary orientation becomes parallel to flow aloft. Front looks to gradually sag south of our area before stalling on Thursday with a much drier and cooler air mass advecting into the peninsula in its wake while slowly moderating into next weekend.

Today through Tuesday will feature the greatest rain chances (60 to 80 percent PoPs) with east/southeast flow this afternoon favoring areas slightly inland, before becoming more widespread Monday and Tuesday as flow becomes more southwest, favoring coastal areas during the morning before spreading inland during the afternoon. Most recent WPC Excessive Rainfall Outlook highlights much of the northern/central CWA under Moderate Risk of localized flooding due to heavy rainfall, valid today and Monday. Generally, expected QPF amounts across those days are between one to two inches. Rain chances decrease afterward as substantially drier air mass makes its arrival, with latest GEFS guidance indicating a 10- to 20-degree drop in dewpoints (70s to 50/60s) and PW values dropping from over 2 inches to 0.5- to 1-inch Wednesday into Thursday. Expect highs in the upper 80s to around 90 this afternoon, then in the mid/upper 80s Monday and Tuesday before dipping into the upper 70s to mid 80s Wednesday and beyond. After muggy overnight conditions with lows in the mid 70s the next few nights, expect lows in the low 60s north to low 70s south Tuesday night before dropping mostly into the 60s areawide for the remainder of the week. MARINE . Weak high pressure over the region maintains light winds and slight seas through early part of the week before cold front moves across the waters mid week leading to deteriorating conditions as winds shift to north and northwest and become gusty with building seas. Showers and storms will be possible into mid week with associated localized hazardous winds and seas before drier post frontal air mass filters into region.

FIRE WEATHER . Abundant moisture with plentiful showers and storms expected to preclude RH concerns into mid week before cold front brings northerly flow into peninsula with cooler and drier air mass during latter half of week, while remaining above critical thresholds.

Preliminary Point Temps/PoPs. TPA 90 76 87 76 / 60 40 80 40 FMY 90 75 88 75 / 60 50 80 30 GIF 91 74 87 73 / 70 50 80 30 SRQ 90 75 88 75 / 60 40 70 40 BKV 91 74 86 73 / 70 40 80 40 SPG 90 76 87 76 / 60 40 80 50

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

UPDATE/AVIATION/MARINE/FIRE WEATHER . 25/Davis UPPER AIR . 99 DECISION SUPPORT . 99


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
FHPF1 - Fred Howard Park, FL 6 mi98 min N 1.9 G 1.9 84°F 1015.8 hPa
CWBF1 - 8726724 - Clearwater Beach, FL 18 mi50 min 86°F 85°F1015.2 hPa
SKCF1 27 mi68 min S 3.9 G 5.8
TPAF1 - 8726694 - TPA Cruise Terminal 2, Tampa, FL 27 mi68 min S 1.9 G 2.9
EBEF1 28 mi50 min 85°F 80°F1014.9 hPa
OPTF1 - 8726607 - Old Port Tampa, FL 28 mi44 min 84°F 84°F1015.3 hPa
TSHF1 - 8726667 - East Bay Causeway, FL 28 mi74 min W 1.9 G 2.9
SAPF1 - 8726520 - St. Petersburg, FL 33 mi44 min 87°F 83°F1015.5 hPa
CLBF1 34 mi98 min SW 4.1 G 5.1 84°F 1014.4 hPa
GCTF1 34 mi44 min 83°F 1015.3 hPa74°F
MTBF1 40 mi44 min 82°F 1015.2 hPa75°F
PMAF1 42 mi44 min 83°F 86°F1015.2 hPa
42098 45 mi36 min 85°F1 ft

Wind History for Clearwater Beach, FL
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Tampa, Tampa International Airport, FL22 mi39 minVar 310.00 miMostly Cloudy87°F71°F59%1015 hPa
St. Petersburg/Clearwater Airport, FL23 mi39 minENE 410.00 miFair86°F73°F65%1014.9 hPa
Brooksville-Tampa Bay Regional Airport, FL24 mi39 minE 310.00 miMostly Cloudy87°F75°F70%1015.1 hPa

Link to 5 minute data for KTPA

Wind History from TPA (wind in knots)
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Last 24hrW8CalmSW4SW3NW9N8NW6NW5NW5NW4N3E4CalmCalmCalmCalmCalmN3N3CalmE3CalmSW53
1 day agoSW5SW5SW8W7W9W8NW5NW5NW4NW3NW4CalmCalmCalmCalmCalmN3CalmCalmCalmCalmSW4SW3SW4
2 days agoS95SW6SW7S5W5W4W4CalmCalmE9SE7SE5SE3CalmE5SE3E3Calm3Calm3SW6SW6

Tide / Current Tables for Gulf Harbors, Florida
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Gulf Harbors
Click for Map
Sun -- 03:26 AM EDT     Moonset
Sun -- 04:21 AM EDT     1.80 feet Low Tide
Sun -- 07:22 AM EDT     Sunrise
Sun -- 10:18 AM EDT     3.06 feet High Tide
Sun -- 05:22 PM EDT     Moonrise
Sun -- 05:30 PM EDT     0.45 feet Low Tide
Sun -- 07:20 PM EDT     Sunset
Sun -- 11:25 PM EDT     2.80 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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2.52.32.11.91.81.822.32.62.9332.82.31.81.20.70.50.50.81.422.52.8

Tide / Current Tables for Anclote Key, southern end, Florida
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Anclote Key
Click for Map
Sun -- 03:23 AM EDT     1.29 feet Low Tide
Sun -- 03:26 AM EDT     Moonset
Sun -- 07:22 AM EDT     Sunrise
Sun -- 09:40 AM EDT     2.92 feet High Tide
Sun -- 04:32 PM EDT     0.32 feet Low Tide
Sun -- 05:22 PM EDT     Moonrise
Sun -- 07:21 PM EDT     Sunset
Sun -- 10:47 PM EDT     2.67 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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2.11.81.51.31.31.51.82.22.62.92.92.72.31.81.20.70.40.40.61.11.72.22.62.7

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
Ground Weather Radar Station Tampa Bay Area, FL
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Gulf Stream Current



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