Sunday, September27, 2020
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Marine Weather and Tides
Homosassa, 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 7:20AMSunset 7:21PM Sunday September 27, 2020 1:14 PM EDT (17:14 UTC) Moonrise 4:23PMMoonset 2:24AM 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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GMZ850 Coastal Waters From Tarpon Springs To Suwannee River Fl Out 20 Nm- 1008 Am Edt Sun Sep 27 2020
This afternoon..East winds 5 to 10 knots then becoming northwest in the afternoon. Seas 2 feet or less. Bay and inland waters smooth. Isolated Thunderstorms late in the morning. Scattered Thunderstorms in the afternoon.
Tonight..Northeast winds around 10 knots then becoming southeast in the late evening and overnight. Seas 2 feet or less. Bay and inland waters a light chop. Scattered Thunderstorms early in the evening, then scattered showers and isolated Thunderstorms in the late evening and overnight.
Monday..Southeast winds around 10 knots then becoming south around 5 knots late in the morning, then becoming southwest in the afternoon. Seas 2 feet or less. Bay and inland waters a light chop. Numerous showers and scattered Thunderstorms.
Monday night..South winds around 5 knots increasing to around 10 knots after midnight. Seas 2 feet or less. Bay and inland waters a light chop. Scattered Thunderstorms in the evening, then numerous showers and isolated Thunderstorms after midnight.
Tuesday..Southwest winds around 10 knots. Seas 2 feet. Bay and inland waters a light chop. Numerous showers in the morning. Scattered Thunderstorms. Widespread showers in the afternoon.
Tuesday night..Northwest winds around 15 knots. Seas 2 to 3 feet. Bay and inland waters a moderate chop. Numerous showers and scattered Thunderstorms in the evening, then scattered showers and isolated Thunderstorms after midnight.
Wednesday..Northwest winds around 15 knots. Seas 2 to 3 feet. Bay and inland waters a moderate chop. Scattered Thunderstorms.
Wednesday night..North winds around 10 knots. Seas 2 to 3 feet. Bay and inland waters a light chop.
Thursday..North winds around 10 knots. Seas 2 feet. Bay and inland waters a light chop.
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 Homosassa, FL
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location: 28.78, -82.71     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
CDRF1 - Cedar Key, FL 30 mi74 min E 2.9 G 4.1 81°F 1015.3 hPa (+1.0)78°F
FHPF1 - Fred Howard Park, FL 44 mi80 min Calm G 0 84°F 1015.5 hPa

Wind History for Cedar Key, FL
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Crystal River Airport, FL10 mi19 minN 010.00 miFair88°F73°F62%1014.6 hPa

Link to 5 minute data for KCGC

Wind History from CGC (wind in knots)
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Last 24hrNW5W6W8W8W6W5W4CalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalm--CalmS3
1 day agoSW5SW5W7
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2 days agoSE5SE5S7CalmW6W5CalmCalmCalmCalmSE3CalmCalmCalmCalmCalmCalmCalmCalmCalmSE4CalmS3W4

Tide / Current Tables for Tuckers Island, Homosassa River, Florida (2)
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Tuckers Island
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Sun -- 01:33 AM EDT     1.56 feet High Tide
Sun -- 03:24 AM EDT     Moonset
Sun -- 07:22 AM EDT     Sunrise
Sun -- 07:36 AM EDT     1.09 feet Low Tide
Sun -- 12:59 PM EDT     1.82 feet High Tide
Sun -- 05:23 PM EDT     Moonrise
Sun -- 07:20 PM EDT     Sunset
Sun -- 08:45 PM EDT     0.27 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.41.51.61.51.41.31.21.11.11.21.41.61.71.81.81.61.41.10.70.50.30.30.50.8

Tide / Current Tables for Halls River Bridge, Halls River, Florida (2)
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Halls River Bridge
Click for Map
Sun -- 03:24 AM EDT     Moonset
Sun -- 04:37 AM EDT     0.50 feet High Tide
Sun -- 07:21 AM EDT     Sunrise
Sun -- 10:54 AM EDT     0.35 feet Low Tide
Sun -- 04:03 PM EDT     0.58 feet High Tide
Sun -- 05:22 PM EDT     Moonrise
Sun -- 07:20 PM EDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.10.20.30.40.50.50.50.40.40.40.40.30.40.40.50.60.60.60.50.40.40.30.20.1

Weather Map
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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.
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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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