Monday, October25, 2021
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Marine Weather and Tides
Atlantic Beach, 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 7:33AMSunset 6:45PM Monday October 25, 2021 4:23 PM EDT (20:23 UTC) Moonrise 9:12PMMoonset 11:02AM Illumination 76% Phase: Waning Gibbous; Moon at 20 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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AMZ452 Expires:202110261000;;759971 Fzus52 Kjax 251829 Cwfjax Coastal Waters Forecast For Northeast Florida/southeast Georgia National Weather Service Jacksonville Fl 229 Pm Edt Mon Oct 25 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. Amz450-452-454-261000- 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- 229 Pm Edt Mon Oct 25 2021
.small craft exercise caution...
Tonight..Variable winds 10 knots or less early evening. Winds becoming west 10 to 15 knots by midnight, then increasing to 15 to 20 knots towards daybreak. Seas 2 to 4 feet with a dominant period 6 seconds. Choppy on the intracoastal waters. Slight chance of showers in the evening.
Tuesday..Northwest winds 15 to 20 knots diminishing to 10 to 15 knots in the afternoon. Seas 3 to 4 feet with a dominant period 7 seconds. Choppy on the intracoastal waters.
Tuesday night..Northwest winds 10 to 15 knots. Seas 2 to 3 feet with a dominant period 7 seconds. A light chop on the intracoastal waters.
Wednesday..North winds 10 to 15 knots becoming northeast 5 knots in the afternoon. Seas 2 to 3 feet. A moderate chop on the intracoastal waters.
Wednesday night..East winds 5 knots becoming southeast 5 to 10 knots after midnight. Seas 2 to 3 feet. Mostly smooth on the intracoastal waters. Chance of showers and slight chance of Thunderstorms after midnight.
Thursday..South winds 15 to 20 knots. Seas 3 to 5 feet. Choppy on the intracoastal waters. Showers and slight chance of Thunderstorms.
Thursday night..Southwest winds 15 to 20 knots. Seas 4 to 6 feet. Chance of showers.
Friday..West winds 15 to 20 knots. Seas 4 to 6 feet. Slight chance of showers.
Friday night..West winds 15 to 20 knots. Seas 3 to 4 feet.
Saturday..West winds 15 to 20 knots. Seas 3 to 4 feet.
AMZ400 Synopsis For Altamaha Sound Ga To Flagler Beach Fl Out To 60 Nm- 229 Pm Edt Mon Oct 25 2021
Synopsis.. A cold front will move across the local waters tonight. High pressure will build to the northwest Tuesday then across the local waters Wednesday. A warm front will lift north across the waters late Wednesday night. A cold front will approach Thursday preceded by strengthening southerly winds to advisory levels and Thunderstorms. Advisory conditions are expected through Friday, then winds decrease into the weekend as high pressure builds east across the gulf coast states.
Gulf stream.. The approximate location of the west wall of the gulf stream as of oct 22, 2021 at 1200 utc... 53 nautical miles east of flagler beach. 60 nautical miles east of saint augustine beach. 67 nautical miles east of jacksonville beach. 87 nautical miles east southeast of st simons island. This data courtesy of the naval oceanographic office.


7 Day Forecast for Marine Location Near Atlantic Beach, FL
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location: 30.39, -81.4     debug


Area Discussion for - Jacksonville, FL
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FXUS62 KJAX 251914 AFDJAX

Area Forecast Discussion National Weather Service Jacksonville FL 314 PM EDT Mon Oct 25 2021

. COOLER AND DRIER TUE & WED .

. STRONG TO SEVERE STORM POTENTIAL THU .

NEAR TERM [Through Tonight].

Scattered showers (with a lone thunderstorm possible mainly south of I-10) will continue through early this evening ahead of an approaching cold front. Most of the shower activity will fade after sunset, but there is a low chance (< 20 %) of spotty showers through the night along the actual cold front itself as it settles southward across the area through daybreak Tuesday. Low stratus and patchy, intermittent ground fog will advect inland from the GOMEX under WSW flow ahead of the front south of the I-10 corridor, expanding eastward along and south of a Gainesville to St. Augustine line through 12z. Clouds will decrease in coverage across SE GA under drier, cooler post-frontal flow where low temperatures will fall into the mid/upper 50s. Lingering clouds across NE FL will keep temps more mild with lows ranging in the 60s to near 70 along the exiting front.

SHORT TERM [Tuesday Through Wednesday Night].

Cooler and dry under deep layer NW flow Tuesday as surface high pressure builds NW of the region and an upper ridge builds eastward across the Gulf Coast states. Mostly sunny skies will prevail under breezy NW winds 10-15 mph and gusts 1-25 mph at times. Winds relax into Tue night as the surface ridge settles across the SE Atlantic coast into Wednesday under a weakening upper ridge. Mid and high clouds increase from the west Wednesday as a potent frontal system develops across the lower MS River Valley, with a chance of late night showers and isolated t'storms after midnight Wed night through sunrise Thu morning as a warm front lifts up the FL peninsula and across SE GA.

High temperatures will range near climo Tuesday from the mid 70s across SE GA to the lower 80s across inland NE FL. Drier air and lighter winds Tue night will enable lows to fall below climo values from near 50 inland to near 60 toward the coast under light northerly drainage winds. High temperatures will remain mild Wednesday and generally near climo values in the mid/upper 70s to low 80s. A warming trend ensues Wed night as warm air advection pattern develops ahead of approaching frontal system, with low temps likely reached around midnight in the upper 50s to low 60s, then warming through sunrise Thu as deep layer southerly flow increases.

LONG TERM [Thursday Through Monday].

Thu . Potential strong to severe thunderstorms as a pre-frontal squall line moves across the local area. Outside of storms, non- convective wind gusts near 35 mph at times could also cause minor wind damage. Very strong dynamical forcing will be in place with high moisture content, but low level instability will be limited given drier low level air in place from tonight's cold front passage and abundant cloud cover. Latest SREF probability guidance for CAPE indicated only 10-30% of MUCAPE of 500 J/kg across the forecast area, with the 50% potential south of Gainesville to St. Augustine. The lack of instability will limit the ability for deeper convective growth and mixing down of stronger winds, BUT given the strength of impressive dynamics including a strengthening 850 mb jet of 45-50 kts across NE FL will continue strong/severe storm potential. The more favored areas for severe storms will focus across the Suwannee River Valley of NE FL extending toward the Atlantic where juicier near 70 deg dew pts will pivot northward just ahead of the approaching surface front through the day Thu, roughly from Trenton to Gainesville to St. Augustine southward. The greatest severe storm concern will be damaging wind gusts, with isolated tornado potential where low level SSE winds will elevate helicity.

Model discrepancies continue with timing with the ECMWF more progressive bringing the bulk of precip/storms across the area early Thu morning exiting the coast early Thu afternoon, while both the GFS and NAM show slower solutions with precip overspreading west-east through the day Thursday, exiting the local coast Thu evening. Storm total precipitation with this system is expected to range from 0.5 inches to 2 inches up toward the Altamaha River basin, overall a much welcomed widespread wetting rainfall for the local area.

Fri & Sat . Lingering clouds, breezy with scattered light shower potential Friday then dry Saturday as waves of upper level energy rotate over the area on the south side of the cut-off upper level low across the mid-Atlantic region. Opted to leave out t'storm potential for now given high low level stability but there could be elevated t'storm potential Friday. Much colder temperatures will funnel southward across the area under extensive wrap-around low level clouds and cool, breezy WNW winds. High temperatures will generally range in the mid/upper 60s to low 70s with lows in the 40s well inland to 50s coast and our southern FL zones.

Sun & Mon . Colder and dry with decreasing cloud cover Sunday becoming mostly clear into Monday as surface high pressure builds west then northwest of the region and upper level flow becomes zonal. Below normal temperatures continue with some warming into Monday with highs in the low/mid 70s and lows in the mid 40s to mid 50s inland to near 60 coast.

MARINE.

A cold front will move across the local waters tonight with an increase in WNW winds after midnight through sunrise Tuesday with winds increasing to 15-20 kts. Advisory Small Craft Exercise Caution conditions for all local waters. NW winds relax Tue afternoon as high pressure builds to the northwest then across the local waters through Wednesday. A warm front will lift north across the waters late Wednesday night. A cold front will approach Thursday preceded by strengthening southerly winds to Advisory levels and thunderstorms. Advisory conditions are expected through Friday, then winds decrease into the weekend as high pressure builds east across the Gulf Coast states.

Rip Currents: Low risk today and Tuesday.

PRELIMINARY POINT TEMPS/POPS.

AMG 59 74 48 73 56 / 20 10 0 0 40 SSI 64 77 56 74 62 / 10 10 0 0 30 JAX 66 79 55 77 62 / 20 10 0 0 30 SGJ 68 82 58 78 65 / 20 10 0 0 30 GNV 66 82 52 79 61 / 10 10 0 0 40 OCF 69 84 54 80 61 / 10 10 0 0 40

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
MYPF1 - 8720218 - Mayport (Bar Pilots Dock), FL 2 mi53 min E 4.1G5.1 77°F 79°F1010.6 hPa
LTJF1 3 mi53 min 78°F 73°F
BLIF1 7 mi53 min WSW 5.1G7 84°F 1010.2 hPa78°F
DMSF1 8 mi53 min 78°F
JXUF1 12 mi53 min 78°F
NFDF1 12 mi53 min WSW 4.1G7 82°F 1009.7 hPa82°F
FRDF1 - 8720030 - Fernandina Beach, FL 20 mi53 min 0G2.9 78°F 78°F1010.4 hPa
BKBF1 21 mi53 min 82°F 1009.9 hPa
41112 - Offshore Fernandina Beach, FL (132) 23 mi53 min 75°F 79°F2 ft
41117 32 mi53 min 77°F 80°F2 ft
SAUF1 - St. Augustine, FL 38 mi23 min ENE 9.9G11 77°F 80°F1010.1 hPa (-3.1)75°F
GTXF1 - Guana Tolomato Matanzas Reserve, FL 51 mi98 min WNW 4.1 84°F 1011 hPa75°F

Wind History for Fernandina Beach, FL
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Mayport Naval Station - Adm David L. McDonald Field, FL1 mi31 minE 610.00 miMostly Cloudy78°F73°F85%1009.6 hPa
Jacksonville Craig Municipal Airport, FL8 mi30 minWSW 410.00 miPartly Cloudy84°F73°F70%1009.6 hPa
Fernandina Beach Municipal Airport, FL16 mi28 minN 34.00 miLight Rain Fog/Mist76°F73°F91%1010.2 hPa
Jacksonville International Airport, FL17 mi27 minWNW 310.00 miLight Rain79°F77°F94%1009.4 hPa
Jacksonville Naval Air Station, FL18 mi30 minW 510.00 miPartly Cloudy83°F75°F77%1009.2 hPa

Link to 5 minute data for KNRB

Wind History from NRB (wind in knots)
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Last 24hrNE10NE10NE11E10NE7S5E9
G16
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1 day agoE7E7E6E6NE6E7E7NE8E7E7E6E7E5E5E5NE8NE7NE9NE9NE11NE9NE8NE8NE7
2 days agoSE8SE7SE6SE6S4S3S5S7SW7SW4S5W4W5NW400NW4N6N6NE8NE7E7NE7NE10

Tide / Current Tables for St. Johns River at Navy degaussing structure, Florida
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St. Johns River at Navy degaussing structure
Click for Map
Mon -- 05:27 AM EDT     -1.53 feet Low Tide
Mon -- 07:35 AM EDT     Sunrise
Mon -- 12:02 PM EDT     Moonset
Mon -- 12:09 PM EDT     2.76 feet High Tide
Mon -- 06:31 PM EDT     -1.25 feet Low Tide
Mon -- 06:43 PM EDT     Sunset
Mon -- 10:11 PM EDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.7
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Tide / Current Tables for St. Johns River Entrance, Florida Current (2) (expired 1999-12-31)
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St. Johns River Entrance
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Mon -- 01:45 AM EDT     -0.00 knots Slack
Mon -- 04:36 AM EDT     -2.05 knots Max Ebb
Mon -- 07:35 AM EDT     Sunrise
Mon -- 08:56 AM EDT     0.00 knots Slack
Mon -- 11:47 AM EDT     1.81 knots Max Flood
Mon -- 12:02 PM EDT     Moonset
Mon -- 02:33 PM EDT     -0.00 knots Slack
Mon -- 05:15 PM EDT     -2.01 knots Max Ebb
Mon -- 06:43 PM EDT     Sunset
Mon -- 10:11 PM EDT     Moonrise
Mon -- 10:20 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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