Monday, September28, 2020
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L-36.com

Marine Weather and Tides
Spring Ridge, 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 7:19PM Monday September 28, 2020 2:12 AM EDT (06:12 UTC) Moonrise 5:01PMMoonset 3:20AM Illumination 84% Phase: Waxing Gibbous; Moon at 11 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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GMZ765 Expires:202009281715;;476743 Fzus52 Ktae 280436 Cwftae Coastal Waters Forecast For Florida Big Bend And Eastern Panhandle National Weather Service Tallahassee Fl 1236 Am Edt Mon Sep 28 2020 Gulf Coastal Waters From The Mouth Of The Suwannee River To Okaloosa-walton County Line Out To 60 Nm. Seas Are Provided As A Range Of The Average Height Of The Highest 1/3 Of The Waves...along With The Occasional Height Of The Average Highest 1/10 Of The Waves. Gmz730-765-281715- Apalachee Bay Or Coastal Waters From Keaton Beach To Ochlockonee River Fl Out To 20 Nm- Coastal Waters From Suwannee River To Keaton Beach Fl Out 20 Nm- 1236 Am Edt Mon Sep 28 2020
Today..Southwest winds 5 to 10 knots. Seas 1 foot or less. Dominant period 2 seconds. Protected waters a light chop. Showers likely in the morning. Chance of Thunderstorms through the day. Chance of showers in the afternoon.
Tonight..Southwest winds 10 knots. Seas 1 foot or less. Dominant period 2 seconds. Protected waters a light chop. Slight chance of showers and Thunderstorms in the evening, then chance of showers and Thunderstorms after midnight.
Tuesday..West winds 10 to 15 knots. Seas 2 to 3 feet. Dominant period 3 seconds. Protected waters a light chop. Showers and slight chance of Thunderstorms.
Tuesday night..Northwest winds 15 to 20 knots. Seas 2 to 3 feet. Dominant period 3 seconds. Protected waters choppy. Chance of showers in the evening. Slight chance of Thunderstorms through the night. Slight chance of showers after midnight.
Wednesday..Northwest winds 15 knots. Seas 2 to 3 feet. Dominant period 3 seconds. Protected waters a moderate chop.
Wednesday night..North winds 10 to 15 knots. Seas 1 to 2 feet. Protected waters a light chop.
Thursday..Northwest winds 10 knots. Seas 1 to 2 feet. Protected waters a light chop.
Thursday night..North winds 10 to 15 knots. Seas 1 to 2 feet. Protected waters a light chop.
Friday..North winds 15 knots. Seas 1 to 2 feet. Protected waters a moderate chop.
GMZ700 Synopsis For The Suwannee River To Okaloosa-walton County Line Out To 60 Nm 1236 Am Edt Mon Sep 28 2020
Synopsis.. A cold frontal passage on Tuesday night will promote northwest winds 15 to 20 knots on Wednesday and Wednesday night, with seas west of the ochlocknee river building 3 to 5 feet. Prior to the frontal passage, showers and Thunderstorms east of mexico beach on Tuesday could lead to waterspouts. Fair boating conditions are expected Wednesday night through Thursday night. Another cold frontal passage on Friday will lead to elevated winds and seas once again.


7 Day Forecast for Marine Location Near Spring Ridge, FL
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location: 29.85, -82.66     debug


Area Discussion for - Jacksonville, FL
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FXUS62 KJAX 280600 AFDJAX

Area Forecast Discussion National Weather Service Jacksonville FL 200 AM EDT Mon Sep 28 2020

. FLOOD WATCH FOR ST JOHNS AND FLAGLER COUNTIES.

. ISOLATED STRONG TO SEVERE STORM POTENTIAL TUE AFTN/EVENING .

. COOLER AND DRIER WED-FRI .

. ONSHORE FLOW AND COASTAL IMPACTS RETURN THIS WEEKEND .

NEAR TERM. Today and Tonight .

A dynamic weather pattern over the next 48 hrs in advance of the seasons first significant cold front. Another round of heavy rainfall potential today as a low level warm front/trough axis lifts northward up the SE GA coast early this morning, overridden by mid level short wave trough energy traversing the local area from the GOMEX. Heavy rainfall potential will focus along the SE GA coast through 12z where isentropic lift is maximized along the lifting trough axis. South of the boundary across NE FL, passing light to moderate rain will be possible through late-morning but expect generally dry conditions until deeper convection from the GOMEX begins to edge inland across the Suwannee River Valley under strengthening, more unidirectional SSW flow with yet another mid level short wave trough that will overspread the local area form west to east into the afternoon, enhancing convection as it expands eastward toward the Atlantic coast where high-res guidance suggests a weak east coast sea breeze making some inland progress across at least coastal NE FL zones. The coinciding low level boundaries and mid level short wave trough energy over a tropical airmass with PWAT content once again near daily record values of 2.3 inches all favor locally heavy rainfall potential today, especially toward the FL Atlantic coast into the afternoon/evening where boundary mergers will focus. Issued a flood watch for both St. Johns and Flagler counties where additional rainfall totals of 1-3 inches will be possible over the next couple of days ahead of the approaching cold front. Yesterday (Sun 9/27) large portions of both counties measured 4-6 inches of daily rainfall, so, any additional rainfall on already saturated grounds will cause flooding issues.

Rainfall will press offshore into the early evening with generally dry conditions by midnight an even peaks of sky across SE GA and the Suwannee River Valley where a swath of drier air will infiltrate ahead of the cold front, which will likely support some ground fog and low stratus to form through daybreak Tue.

Temperatures will trend above normal but be tempered by cloud cover with highs in the low/mid 80s today with lows in the upper 60s across our NW GA zones near the Altamaha River basin to mostly the low/mid 70s. Conditions will continue to feel 'muggy' with elevated dew pts in the upper 60s to low 70s across SE GA to the mid to upper 70s toward the Atlantic coast and much of NE FL.

SHORT TERM [Tuesday Through Thursday].

A deep mid to upper level trough over the central US will move eastward towards the region Tuesday and support a strong cold front that will through push through the area with widespread showers and scattered strong thunderstorms moving into SE GA Tuesday afternoon then into NE FL by the evening. A potential for isolated severe thunderstorms exist with high 0-6 km shear values of 40 to 60 knots, but low level shear will be weak while overcast to mostly cloudy skies over much of the area. This will limit the instability available for updrafts to grow ahead of the cold front and form into severe cells over our region with maximum ML CAPE levels topping out around 1,000 J/kg of ML CAPE. Locally heavy rain with widespread showers and the storms late on Tuesday will drop another inch or two of rainfall over the area with locally heavier amounts and may add to flooding concerns over portions of coastal NE FL from St Augustine south to Flagler Beach.

Much drier air will follow on Wednesday and Thursday as showers clear northeast of the area into the Atlantic waters with breezy west north west winds as high pressure moves in from the northwest with mostly sunny skies.

Temps will begin near normal on Tuesday and then trend below normal Wednesday and Thursday after the front during the period.

LONG TERM. Thursday night through Sunday .

A dry cold front will move southeast across forecast area Thursday night and Friday, but little moisture is associated with it, so a dry passage is expected. Strong high pressure will build to the northwest following this passage for Friday night. This high will build to the north over the weekend. A prolonged period of north to northeast flow will develop in this pattern. With a fairly tight pressure gradient, an enhanced flow anticipated along the coast. As a result could see minor coastal impacts affecting NE FL over the weekend.

Temperatures will trend below normal for this period.

MARINE.

A warm front will lift north of the local waters this morning in advance of an approaching cold front. The cold front will cross the local waters Tuesday evening. High pressure will build across the Gulf Coast region Wednesday and Thursday. A dry cold front will move press across the local waters Thursday night into Friday. Strong high pressure will build north of the waters this weekend with a return of persistent, strengthening onshore flow into early next week with potential small craft exercise caution or advisory conditions.

Rip Currents: Moderate Risk NE FL beaches today and Tue. Low risk for SE GA beaches.

HYDROLOGY.

The Altamaha River at Charlotteville and Baxley was falling from a crest in Minor Flood stage this morning. Further decline into Action stage is expected through today. Locally heavy rainfall through Tue ahead of the front could create river rises. This weekend strengthening onshore flow develops with another round of tidal flooding and beach erosion likely into early next week.

PREV DISCUSSION [108 AM EDT].

AVIATION. [Through 06Z Tuesday]

Best potential for restrictions due to heavy rainfall this morning will focus near SSI where a weak trough axis under passing upper level energy will converge through 12z. Across FL terminals, VCSH possible through the early morning hours with stratus and shallow ground fog restrictions of MVFR to IFR at times. Rainfall potential increases from the west toward GNV through mid-morning, with VCTS indicated by 14z. Rainfall potential increases in the afternoon and persists into the early evening for east coast terminals including VQQ as passing upper level energy overrides forcing along the east coast sea breeze and a low level trough axis. Convection will press offshore of the local Atlantic coast this evening with mostly dry conditions but lingering clouds through 06z with low stratus developing after 06z and potential restrictions.

PRELIMINARY POINT TEMPS/POPS.

AMG 83 70 80 57 72 / 40 20 100 50 20 SSI 82 73 82 62 75 / 60 50 90 70 20 JAX 84 72 86 61 77 / 70 50 100 60 30 SGJ 84 73 87 64 79 / 70 60 90 70 30 GNV 84 72 85 60 76 / 70 40 90 60 20 OCF 85 72 86 63 77 / 60 30 90 60 20

JAX WATCHES/WARNINGS/ADVISORIES. FL . Flood Watch through Tuesday evening for Coastal Flagler-Coastal St. Johns-Inland Flagler-Inland St. Johns.

GA . None. AM . None.


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
KTNF1 - Keaton Beach, FL 50 mi72 min SE 5.1 G 6 74°F 1012.9 hPa74°F
CDRF1 - Cedar Key, FL 53 mi72 min SSE 16 G 17 77°F 1012.8 hPa (-1.1)75°F
SAUF1 - St. Augustine, FL 74 mi132 min SE 15 G 16 79°F 82°F1014.2 hPa (-0.6)75°F

Wind History for Cedar Key, FL
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Gainesville, Gainesville Regional Airport, FL24 mi79 minESE 610.00 miOvercast73°F73°F100%1013.5 hPa

Link to 5 minute data for KGNV

Wind History from GNV (wind in knots)
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Last 24hrCalmCalmCalmCalmCalmCalmNE3E4E4SE3E3SE5E5E5SE3E4NE7E5SE4SE8SE6E7E6S5
1 day agoCalmCalmCalmCalmCalmW4CalmN3Calm3W9NW5NW7NW6N7W5NW4NW5CalmCalmCalmCalmCalmCalm
2 days agoCalmCalmE3CalmCalmCalmE3SE3E3633W5W6CalmNW5CalmCalmW4W4W5W4W4Calm

Tide / Current Tables for Steinhatchee River ent., Deadman Bay, Florida
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Steinhatchee River ent.
Click for Map
Mon -- 12:57 AM EDT     2.92 feet High Tide
Mon -- 04:23 AM EDT     Moonset
Mon -- 06:40 AM EDT     1.51 feet Low Tide
Mon -- 07:25 AM EDT     Sunrise
Mon -- 12:44 PM EDT     3.38 feet High Tide
Mon -- 06:03 PM EDT     Moonrise
Mon -- 07:22 PM EDT     Sunset
Mon -- 07:31 PM EDT     0.46 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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2.82.92.82.52.11.81.51.51.72.12.533.33.43.22.721.40.80.50.50.81.52.1

Tide / Current Tables for Pepperfish Keys, Florida
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Pepperfish Keys
Click for Map
Mon -- 12:52 AM EDT     2.89 feet High Tide
Mon -- 04:23 AM EDT     Moonset
Mon -- 06:35 AM EDT     1.51 feet Low Tide
Mon -- 07:25 AM EDT     Sunrise
Mon -- 12:39 PM EDT     3.34 feet High Tide
Mon -- 06:03 PM EDT     Moonrise
Mon -- 07:21 PM EDT     Sunset
Mon -- 07:26 PM EDT     0.46 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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2.82.92.72.42.11.71.51.51.72.12.533.33.33.12.621.30.80.50.50.91.52.2

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 Jacksonville, FL
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Gulf Stream Current



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