Monday, September27, 2021
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Marine Weather and Tides
St. Augustine, FL

Version 3.4
NOTICE
3/30/2021 -- ANZ330 has been split into ANZ331 and ANZ332. Click EDIT in Marine Forecast and select your new zone.
1/26/2021 -- The West Coast Satellite images havd been updated. They now use GEOS-17.
1/1/2021 -- The 7 day forecast are now working well. Thank you NOAA for your support.

Sunrise 7:15AMSunset 7:16PM Monday September 27, 2021 3:29 AM EDT (07:29 UTC) Moonrise 10:32PMMoonset 12:14PM Illumination 67% Phase: Waning Gibbous; Moon at 21 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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AMZ454 Expires:202109272130;;244729 Fzus52 Kjax 270554 Cwfjax Coastal Waters Forecast For Northeast Florida/southeast Georgia National Weather Service Jacksonville Fl 154 Am Edt Mon Sep 27 2021 Atlantic Coastal Waters From Altamaha Sound Ga To Flagler Beach Fl 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. Amz450-452-454-272130- Coastal Waters From Altamaha Sound To Fernandina Beach Fl Out 20 Nm- Coastal Waters From Fernandina Beach To St. Augustine Fl Out 20 Nm- Coastal Waters From St. Augustine To Flagler Beach Fl Out 20 Nm- 154 Am Edt Mon Sep 27 2021
Today..East northeast winds 5 to 10 knots, becoming east and increasing to 10 to 15 knots in the afternoon. Seas 2 to 3 feet with a dominant period of 9 seconds. Becoming a light chop on the intracoastal waters.
Tonight..Southeast winds 10 to 15 knots, diminishing to 5 to 10 knots after midnight. Seas 3 to 4 feet with a dominant period of 9 seconds. Becoming mostly smooth on the intracoastal waters.
Tuesday..North winds around 5 knots, becoming east southeast around 10 knots in the afternoon. Seas 2 to 3 feet with a dominant period of 9 seconds. Becoming a light chop on the intracoastal waters.
Tuesday night..Southeast winds 5 to 10 knots, becoming southwest after midnight. Seas 2 to 3 feet. Mostly smooth on the intracoastal waters.
Wednesday..Northwest winds around 5 knots, becoming east around 10 knots in the afternoon. Seas around 2 feet. Becoming a light chop on the intracoastal waters.
Wednesday night..Southeast winds 5 to 10 knots, becoming south after midnight. Seas 2 to 3 feet.
Thursday..South winds around 5 knots, becoming east around 10 knots in the afternoon. Seas 2 to 3 feet.
Thursday night..Southeast winds 5 to 10 knots. Seas 2 to 3 feet.
Friday..East winds 5 to 10 knots, increasing to 10 to 15 knots in the afternoon. Seas building to 3 to 4 feet due to a long period ocean swell. Slight chance of showers during the afternoon.
AMZ400 Synopsis For Altamaha Sound Ga To Flagler Beach Fl Out To 60 Nm- 154 Am Edt Mon Sep 27 2021
Synopsis.. High pressure centered over the southeastern states will gradually weaken as it settles over our waters on Tuesday and Wednesday. Strengthening high pressure over southeastern canada on Thursday will drive a weak cold front southward across our local waters by late Thursday night and Friday. Northeasterly winds will strengthen in the wake of this front from Friday afternoon through the upcoming weekend. Meanwhile, long period swells from distant major hurricane sam will enter our local waters beginning on Thursday, with seas briefly building to caution levels offshore on Friday night and Saturday.
Gulf stream.. The approximate location of the west wall of the gulf stream as of sep 25, 2021 at 1200 utc... 58 nautical miles east of flagler beach. 68 nautical miles east of saint augustine beach. 81 nautical miles east of jacksonville beach. 99 nautical miles east southeast of st simons island. This data courtesy of the naval oceanographic office.


7 Day Forecast for Marine Location Near St. Augustine, FL
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location: 29.88, -81.31     debug


Area Discussion for - Jacksonville, FL
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FXUS62 KJAX 270641 AFDJAX

Area Forecast Discussion National Weather Service Jacksonville FL 241 AM EDT Mon Sep 27 2021

. UNSEASONABLY DRY WEATHER CONTINUES THROUGH THURSDAY .

CURRENTLY.

Overnight surface analysis depicts strengthening high pressure (1021 millibars) blanketing the southeastern states. Aloft..negatively-tilted troughing extending from Hudson Bay, Canada across New England continues to lift slowly northeastward, with ridging aloft gradually expanding north and northeastward from the western and central Gulf of Mexico. This weather pattern continues to create deep and dry northwesterly flow locally. Scattered stratocumulus clouds were developing across north central FL, while fair skies prevail elsewhere. An unseasonably dry air mass prevails area-wide, with latest GOES-East derived Total Precipitable Water imagery indicating that PWATS were in the 0.75 to 1 inch range at 06Z, with surface observations displaying dewpoints mostly in the upper 50s to lower 60s. Temperatures were falling through the 60s, with a light onshore breeze keeping coastal temperatures closer to 70 degrees.

NEAR TERM [Through Tonight].

Radiational cooling may result in patchy radiational fog formation around sunrise, mostly for locations north and northwest of Alma, GA. Otherwise, a dry and subsident air mass will prevail area-wide for most of this week as surface ridging gradually weakens and settles directly over our region by late tonight. The dry air mass and full sunshine will allow highs to climb to the upper 80s at most inland locations today, with the Atlantic sea breeze developing towards noon and pushing inland through the afternoon hours, keeping coastal highs mostly in the mid 80s. These values are near or perhaps a degree or two above late September climatology. Strong subsidence and a dry air mass will allow inland lows to fall to the lower 60s tonight, with a light onshore breeze this evening keeping coastal lows in the mid to upper 60s.

SHORT TERM [Tuesday Through Wednesday].

Surface high pressure centered over the mid-Atlantic states will slowly shift to the east-southeast into the Atlantic through Wednesday. Dry and quiet weather continue through mid-week with subsidence and a dry airmass lingering over the region. Temperatures will experience a mild warming trend this week with temps rising above the seasonal average with daily highs in the mid to upper 80s and lower 90s with min temps in the low to mid 60s for inland areas.

LONG TERM [Thursday Through Sunday].

Surface high pressure begins to our east as a weak backdoor cold front moves into the area from the northeast Friday into Saturday. This front could bring a slight chance for showers with possible isolated thunderstorms Friday into the weekend. Ridging builds back in from the north behind the front bringing another cool, dry airmass to the area for the weekend. The warming trend will come to an end by the end of the week with temperatures dipping down slightly below the seasonal average.

MARINE.

High pressure centered over the southeastern states will gradually weaken as it settles over our waters on Tuesday and Wednesday. A persistent northeasterly ocean swell will keep combined seas in the 2-4 foot range through tonight. Winds and seas will then diminish on Tuesday and Wednesday. Strengthening high pressure over southeastern Canada on Thursday will drive a weak cold front southward across our local waters by late Thursday night and Friday. Northeasterly winds will strengthen in the wake of this front from Friday afternoon through the upcoming weekend. Meanwhile, long period swells from Distant Major Hurricane Sam will enter our local waters beginning on Thursday, with combined seas briefly building to Caution levels offshore on Friday night and Saturday.

Rip Currents: A persistent northeasterly ocean swell will combine with onshore winds to keep a moderate risk in place at all area beaches today. Wave heights should subside enough on Tuesday and Wednesday for a low risk. Long period ocean swells originating from distant Major Hurricane Sam will arrive at area beaches beginning on Thursday, with seas building and becoming rough by Friday, likely resulting in a high risk at all area beaches.

HYDROLOGY.

Minor flooding will continue along lower portions of the Santa Fe and lower portions of the Satilla Rivers during the next several days. Minor flooding along portions of the St. Marys River near the Macclenny gauge should fall back to action stage by this evening. Minor flooding along middle portions of the Santa Fe River is expected to fall back to action stage later this week, particularly near the gauge at O'Leno State Park.

PRELIMINARY POINT TEMPS/POPS.

AMG 87 61 87 62 89 / 0 0 0 0 10 SSI 83 66 85 68 86 / 0 0 0 0 0 JAX 87 61 87 63 89 / 0 0 0 0 0 SGJ 84 67 85 68 86 / 0 0 0 0 0 GNV 88 62 88 63 89 / 0 0 0 0 10 OCF 88 63 88 64 89 / 0 0 0 0 0

JAX WATCHES/WARNINGS/ADVISORIES. FL . None. GA . None. AM . None.


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
SAUF1 - St. Augustine, FL 3 mi29 min E 4.1 G 5.1 78°F 81°F1019.3 hPa (-0.7)61°F
41117 15 mi119 min 78°F 82°F2 ft
GTXF1 - Guana Tolomato Matanzas Reserve, FL 16 mi104 min WSW 1 65°F 1020 hPa63°F
BKBF1 30 mi59 min 68°F 1019.5 hPa
LTJF1 35 mi59 min 74°F 64°F
JXUF1 36 mi59 min 81°F
MYPF1 - 8720218 - Mayport (Bar Pilots Dock), FL 36 mi59 min SE 1.9 G 1.9 75°F 82°F1019.6 hPa
BLIF1 37 mi59 min SW 1.9 G 1.9 74°F 1019.4 hPa69°F
DMSF1 37 mi59 min 82°F
NFDF1 40 mi59 min WNW 4.1 G 4.1 70°F 1019.2 hPa70°F

Wind History for I-295 Bridge, St Johns River, FL
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Northeast Florida Regional Airport, FL6 mi33 minN 010.00 miFair65°F62°F90%1019.3 hPa

Link to 5 minute data for KSGJ

Wind History from SGJ (wind in knots)
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Last 24hrCalmCalmCalmNW3NW3N5N3N7N9NE11NE11NE12NE11NE9NE9E9E9E7E8E7E7E5CalmCalm
1 day agoNE8NE6NE5NE4NE7E9NE9NE10NE9NE9NE9NE8NE10NE9E9NE6NE5E6NE5CalmCalmCalmNW3Calm
2 days agoNW4N7NW5NW4NW4N5N9NE8N9NE11NE9N10NE10NE10NE11NE8NE8NE9E10NE11NE10NE8NE8NE9

Tide / Current Tables for St. Augustine, city dock, Florida
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St. Augustine
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Mon -- 01:00 AM EDT     4.19 feet High Tide
Mon -- 07:16 AM EDT     Sunrise
Mon -- 07:19 AM EDT     1.33 feet Low Tide
Mon -- 01:14 PM EDT     Moonset
Mon -- 01:22 PM EDT     4.86 feet High Tide
Mon -- 07:15 PM EDT     Sunset
Mon -- 08:17 PM EDT     1.60 feet Low Tide
Mon -- 11:32 PM EDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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44.243.42.721.61.41.41.92.73.64.44.84.84.33.52.92.31.91.61.72.12.8

Tide / Current Tables for East Tocoi, St. Johns River, Florida (4)
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East Tocoi
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Mon -- 02:18 AM EDT     0.74 feet Low Tide
Mon -- 07:17 AM EDT     Sunrise
Mon -- 07:20 AM EDT     0.94 feet High Tide
Mon -- 01:15 PM EDT     Moonset
Mon -- 02:10 PM EDT     0.67 feet Low Tide
Mon -- 07:16 PM EDT     Sunset
Mon -- 07:48 PM EDT     1.05 feet High Tide
Mon -- 11:33 PM EDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.80.80.70.70.80.90.90.90.90.90.90.80.70.70.70.70.80.9111111

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NOTE: This section has been updated as of 1/26/2021. If the image you are expecting is not showing, please let me know. You may use the EDIT function to update your location.
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