Tuesday, July14, 2020
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Marine Weather and Tides
Jacksonville Beach, FL

Version 3.4
NOTICE
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 6:32AMSunset 8:30PM Tuesday July 14, 2020 3:04 AM EDT (07:04 UTC) Moonrise 12:54AMMoonset 2:07PM Illumination 36% Phase: Waning Crescent; Moon at 24 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:202007141430;;818408 Fzus52 Kjax 140618 Cwfjax Coastal Waters Forecast For Northeast Florida/southeast Georgia National Weather Service Jacksonville Fl 218 Am Edt Tue Jul 14 2020 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. Amz450-452-454-141430- 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- 218 Am Edt Tue Jul 14 2020
Today..West northwest winds 5 to 10 knots becoming south southeast in the afternoon. Seas 1 to 2 feet. Dominant period 8 seconds. Inland waters a light chop. A chance of showers and Thunderstorms.
Tonight..South southwest winds around 10 knots becoming west after midnight. Seas 1 to 2 feet. Dominant period 8 seconds. Inland waters a light chop. A slight chance of showers and Thunderstorms.
Wednesday..Northwest winds 5 to 10 knots becoming east southeast in the afternoon. Seas 1 to 2 feet. Dominant period 8 seconds. Inland waters a light chop.
Wednesday night..Southeast winds 5 to 10 knots. Seas 1 to 2 feet. Dominant period 8 seconds. Inland waters a light chop.
Thursday..East winds 10 to 15 knots. Seas 1 to 2 feet. Dominant period 8 seconds. Inland waters a light chop.
Thursday night through Saturday..East southeast winds 10 to 15 knots. Seas 2 to 3 feet. Showers and Thunderstorms likely.
AMZ400 Synopsis For Altamaha Sound Ga To Flagler Beach Fl Out To 60 Nm- 218 Am Edt Tue Jul 14 2020
Synopsis.. Weak troughing will remain situated just north of the georgia waters through midweek, resulting in prevailing offshore winds during the overnight and morning hours that will shift to onshore during the afternoon. Scattered showers and Thunderstorms will be possible through midweek, especially during the afternoon and evening hours in the near shore waters. High pressure will then build over the canadian maritime region late this week and will slowly expand down the southeastern seaboard, shifting winds to a prevailing onshore direction through the weekend. An easterly wave may cross our local waters on Saturday, potentially increasing shower and Thunderstorm coverage throughout our local waters.
Gulf stream.. The approximate location of the west wall of the gulf stream as of jul 14, 2020 at 1200 utc... 59 nautical miles east of flagler beach. 72 nautical miles east southeast of saint augustine beach. 67 nautical miles east northeast of jacksonville beach. 71 nautical miles east southeast of st simons island. This data courtesy of the naval oceanographic office.


7 Day Forecast for Marine Location Near Jacksonville Beach, FL
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location: 30.29, -81.36     debug


Area Discussion for - Jacksonville, FL
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FXUS62 KJAX 140555 AFDJAX

Area Forecast Discussion National Weather Service Jacksonville FL 155 AM EDT Tue Jul 14 2020

AVIATION. [Through 06Z Wednesday]

VFR conditions overnight and into Tuesday with scattered showers and thunderstorms building throughout the day as the sea breeze from out of the west moves across the region with winds building to about 5-10 knots from out of the S-SW. Potential for sea breeze collisions near the eastern coastline in the mid to late afternoon leading to late afternoon and early evening storms.

PREV DISCUSSION [948 PM EDT].

NEAR TERM [Through Tonight].

Convection is nil or near nil over the region this afternoon due to warm temperatures aloft (-6C at 500 mb). There is subtle hint of convergence along the First Coast late this afternoon with a surface trof right along the coast. This may bring a renegade pop- up shower or two late this afternoon with perhaps a clap or two of thunder. Otherwise, muggy conditions this evening into the overnight hours. Lows will be in the mid/upper 70s. The prevailing southwest flow which may develop some overnight showers and isolated storms over the NE GOM and the Big Bend Region of FL which may push inland to the I-75 corridor of inland NE FL toward sunrise.

SHORT TERM [Tuesday Through Wednesday Night].

Tuesday will be a similar set up as far as low-level flow pattern goes with a southwesterly flow with low level ridge axis near the FL Keys. Even more moisture recovery Tuesday will result in higher PoP coverage with the early morning showers coming in off the Gulf, transitioning to convective activity favoring interior counties by late morning and early afternoon, pressing toward the coastal FL and GA the remainder the day. Precipitable water values will climb into the 1.8 to 2.0 range for most of NE FL with PWATS about 1.6 to 1.8 over SE GA. Scattered to numerous showers are forecast for NE FL with mainly widely scattered coverage for SE GA.

On Wednesday, there will be a high pressure over coastal New England and another area of high pressure over the NE Gulf of Mexico. This pattern will bring lighter winds conducive for both the east coast and west coast seabreezes developing. With this said highest convective coverage will be across the interior counties between I-95 and I-75 with a collision of sea breezes likely to occur. PoPs 55-65% west of I-95. There is a potential for a few storms to become strong to marginally severe by mid to late afternoon into very early evening.

Daily high temperatures during this period are expected to reach into the lower to mid 90s with peak heat index values ranging between 100-108 degrees. Overnight low temperatures are expected to be in the mid 70s for midweek.

LONG TERM [Thursday Through Monday].

The western Atlantic ridge will be a further north with axis extending into south central GA while another area of high pressure will encompass Appalachian region. This pattern will bring a deep onshore flow pattern which will favor the east coast sea breeze development in the late morning to early afternoon, yielding diurnal convection across the interior and then pressing towards the western CWA during the mid to late afternoon through the early evening. Temperatures for the end of the week and into the weekend are expected to be slightly above the climatological average.

MARINE.

An evening wind surge should bring prevailing southwesterly winds up towards 15 knots through around midnight both near shore and offshore, with seas of 2-4 feet. Otherwise, weak troughing will remain situated just north of the Georgia waters through midweek, resulting in prevailing offshore winds during the overnight and morning hours that will shift to onshore during the afternoon. Scattered showers and thunderstorms will be possible through midweek, especially during the afternoon and evening hours in the near shore waters. High pressure will then build over the Canadian Maritime region late this week and will slowly expand down the southeastern seaboard, shifting winds to a prevailing onshore direction through the weekend. An easterly wave may cross our local waters on Saturday, potentially increasing shower and thunderstorm coverage throughout our local waters.

Rip Currents: A longer period east-southeasterly ocean swell will arrive at the northeast Florida beaches around the time of high tide late on Tuesday afternoon, which will combine with onshore winds to create a low-end moderate risk. Low risk continues tomorrow for the southeast Georgia beaches.

FIRE WEATHER.

Westerly transport winds of 5-10 knots during the morning hours will shift to southwesterly on Tuesday afternoon, with a more active Atlantic sea breeze boundary pushing inland during the afternoon hours. Minimum relative humidity values will fall to near 35 percent across inland portions of southeast Georgia, with minimum values around 45 percent along the I-10 corridor and higher values further southward.

PRELIMINARY POINT TEMPS/POPS.

AMG 96 75 95 74 96 / 20 20 50 20 30 SSI 94 78 90 79 89 / 20 10 20 10 10 JAX 97 76 95 75 93 / 40 20 40 10 20 SGJ 94 76 92 76 91 / 40 20 30 10 20 GNV 93 74 94 73 94 / 40 20 50 20 40 OCF 93 74 94 73 94 / 40 10 50 20 50

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 8 mi76 min 87°F
DMSF1 12 mi76 min 87°F
JXUF1 14 mi76 min 86°F
41117 25 mi38 min 84°F3 ft
FRDF1 - 8720030 - Fernandina Beach, FL 27 mi76 min 87°F
SAUF1 - St. Augustine, FL 30 mi64 min W 6 G 8.9 81°F 83°F1014.3 hPa (-0.3)75°F
GTXF1 - Guana Tolomato Matanzas Reserve, FL 44 mi79 min W 5.1 80°F 1015 hPa75°F

Wind History for I-295 Bridge, St Johns River, FL
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Mayport Naval Station - Adm David L. McDonald Field, FL8 mi72 minW 610.00 miFair83°F73°F74%1013.5 hPa
Jacksonville Craig Municipal Airport, FL9 mi71 minW 610.00 miFair82°F73°F77%1013.7 hPa
Jacksonville Naval Air Station, FL17 mi71 minW 1010.00 miFair82°F73°F74%1013.5 hPa
Jacksonville International Airport, FL22 mi68 minW 610.00 miFair78°F73°F87%1013.5 hPa
Northeast Florida Regional Airport, FL22 mi68 minWSW 510.00 miFair80°F73°F82%1014.2 hPa
Fernandina Beach Municipal Airport, FL23 mi69 minW 810.00 miFair80°F79°F97%1013.5 hPa

Link to 5 minute data for KNRB

Wind History from NRB (wind in knots)
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Last 24hrSW7SW6SW5SW6SW8SW9SW8W5W8SW5W7W7SW8SW7SW7SW8SW9W4W4SW4SW4W6W8W6
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2 days agoW6W6W7W7W7W6W9W9W55N4E6SE14SE11SE13SE11
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Tide / Current Tables for Jacksonville Beach, Florida
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Jacksonville Beach
Click for Map
Tue -- 01:53 AM EDT     Moonrise
Tue -- 03:14 AM EDT     4.78 feet High Tide
Tue -- 06:33 AM EDT     Sunrise
Tue -- 09:48 AM EDT     1.00 feet Low Tide
Tue -- 03:07 PM EDT     Moonset
Tue -- 03:53 PM EDT     5.24 feet High Tide
Tue -- 08:28 PM EDT     Sunset
Tue -- 10:31 PM EDT     1.47 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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2.83.74.44.84.74.23.32.51.71.211.42.33.44.455.254.43.52.721.51.5

Tide / Current Tables for St. Johns River Entrance, Florida Current
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St. Johns River Entrance
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Tue -- 12:20 AM EDT     0.00 knots Slack
Tue -- 01:53 AM EDT     Moonrise
Tue -- 02:32 AM EDT     1.35 knots Max Flood
Tue -- 05:48 AM EDT     -0.00 knots Slack
Tue -- 06:33 AM EDT     Sunrise
Tue -- 08:44 AM EDT     -1.72 knots Max Ebb
Tue -- 12:25 PM EDT     0.00 knots Slack
Tue -- 02:59 PM EDT     1.92 knots Max Flood
Tue -- 03:07 PM EDT     Moonset
Tue -- 06:33 PM EDT     -0.00 knots Slack
Tue -- 08:29 PM EDT     Sunset
Tue -- 09:19 PM EDT     -1.62 knots Max Ebb
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-0.30.61.31.310.5-0.2-1.1-1.6-1.7-1.6-1.2-0.40.61.61.91.71.20.5-0.5-1.3-1.6-1.6-1.4

Weather Map
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wmap_A
GEOS Local Image of Southeast    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
Wind Forecast for Jacksonville, FL (3,6,7,8)
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Ground Weather Radar Station Jacksonville, FL
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Disclaimer:
The information on this web site has not been checked for accuracy. It is for entertainment purposes only and should be independently verified before using for any other reason. There are five sources. 1) Documents and manuals from a variety of sources. These have not been checked for accuracy and in many cases have not even been read by anyone associated with L-36.com. I have no idea of they are useful or accurate, I leave that to the reader. 2) Articles others have written and submitted. If you have questions on these, please contact the author. 3) Articles that represent my personal opinions. These are intended to promote thought and for entertainment. These are not intended to be fact, they are my opinions. 4) Small programs that generate result presented on a web page. Like any computer program, these may and in some cases do have errors. Almost all of these also make simplifying assumptions so they are not totally accurate even if there are no errors. Please verify all results. 5) Weather information is from numerous of sources and is presented automatically. It is not checked for accuracy either by anyone at L-36.com or by the source which is typically the US Government. See the NOAA web site for their disclaimer. Finally, tide and current data on this site is from 2007 and 2008 data bases, which may contain even older data. Changes in harbors due to building or dredging change tides and currents and for that reason many of the locations presented are no longer supported by newer data bases. For example, there is very little tidal current data in newer data bases so current data is likely wrong to some extent. This data is NOT FOR NAVIGATION. See the XTide disclaimer for details. In addition, tide and current are influenced by storms, river flow, and other factors beyond the ability of any predictive program.