Marine Weather and Tides
6/25/2017 - NOAA is having a major issue that impact the 7 day forecast load times. Many users are reporting problems. The issue has been reported.
5/23/2017 - Worked with NOAA again to speed up the 7 day forecast load times. Thanks to them for being responsive.
5/19/2016 - There were issues with the 3 day airport observation history. I switched to another data source. Let me know if you see any issues with the data feeds.
|Sunrise 7:31AM||Sunset 6:50PM||Friday October 20, 2017 12:22 PM EDT (16:22 UTC)||Moonrise 7:11AM||Moonset 6:45PM||Illumination 0%|
EDIT (on/off)  Help
|AMZ452 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- 947 Am Edt Fri Oct 20 2017 |
.small craft exercise caution...
Rest of today..Northeast winds 15 to 20 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 8 seconds. Inland waters a moderate chop.
Tonight..East winds 15 to 20 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 6 seconds. Inland waters a moderate chop.
Saturday..East northeast winds 15 to 20 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 6 seconds. Inland waters a moderate chop. A slight chance of showers.
Saturday night..East winds 15 to 20 knots. Seas 4 to 6 feet with occasional seas up to 8 feet. Dominant period 7 seconds. Inland waters a moderate chop. A chance of showers.
Sunday..East southeast winds 10 to 15 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Inland waters a moderate chop. Showers likely and a slight chance of Thunderstorms.
Sunday night..Southeast winds 15 to 20 knots. Seas 4 to 6 feet with occasional seas up to 8 feet. Inland waters a moderate chop. A chance of showers and a slight chance of Thunderstorms.
Monday..South southeast winds 15 to 20 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Inland waters choppy. A chance of showers and a slight chance of Thunderstorms.
Monday night..South southwest winds 15 to 20 knots. Seas 4 to 6 feet with occasional seas up to 8 feet. Inland waters choppy. Showers likely and a chance of Thunderstorms.
Tuesday..West southwest winds 10 to 15 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Inland waters a moderate chop. A chance of showers and a slight chance of Thunderstorms.
|AMZ400 Synopsis For Altamaha Sound Ga To Flagler Beach Fl Out To 60 Nm- 947 Am Edt Fri Oct 20 2017 |
Synopsis..High pressure will be north of area waters into Saturday, then to the northeast Saturday night into Monday. A strong cold front will sweep across the region from the west Monday night into Tuesday. A strong line of storms will be possible as this front moves through.
7 Day Forecast for Marine Location Near Jacksonville, FLHourly EDIT Help
Area Discussion for - Jacksonville, FL  (on/off)  Help NOTE: mouseover dotted underlined text for definition
|Fxus62 kjax 201418|
area forecast discussion
national weather service jacksonville fl
1018 am edt Fri oct 20 2017
Update A large mid upper ridge builds into the area with the
low level ridge axis to the north of the area. Other than a few
coastal clouds and possible sprinkles... Skies will be mostly
sunny with warm afternoon temps inland and cooler at the coast
with breezy northeast winds.
Aviation PrevailingVFR with ocnl coastal clouds and
gusty northeast winds.
Marine High pressure will be north of area waters into
Saturday then to the northeast Saturday night into Monday. Onshore
winds will decrease some but will still have an exercise caution
for the waters.
Rip currents: the high risk of rip currents is continued through
late Saturday due to lingering east swells and onshore flow.
Hydrology Water levels along the local atlantic coast
continue to lower to action stages with the passage of the new
moon and gradually weakening onshore flow. High tides have been
cresting at low end moderate stage in the st. Johns river basin
south of downtown jax with levels in the minor to barely moderate
in duval county jax metro area. At this time, decided to extend
the coastal flood warning for the st. Johns basin, through|
Preliminary point temps pops
Amg 82 59 83 63 0 0 0 10
ssi 79 71 80 70 0 10 10 30
jax 81 69 83 67 10 10 20 20
sgj 80 73 81 72 10 10 20 20
gnv 84 67 86 66 10 10 10 10
ocf 85 66 86 68 10 0 10 10
Jax watches warnings advisories
Fl... High rip current risk through Saturday evening for coastal duval-
coastal nassau-flagler-st. Johns.
Coastal flood warning until 8 am edt Saturday for clay-coastal
duval-flagler-inland duval-putnam-st. Johns.
Ga... High rip current risk through Saturday evening for coastal
Am... Small craft advisory until noon edt today for waters from
altamaha sound ga to fernandina beach fl from 20 to 60 nm-
waters from fernandina beach to st. Augustine fl from 20 to
60 nm-waters from st. Augustine to flagler beach fl from 20
to 60 nm.
Pp ak ce
Weather Reporting StationsEDIT (on/off)  Help NOTE: Click on distance to see the station location on a map
|Stations||Dist||Age||Wind||Air Temp||Water Temp||Waves||Pressure||DewPt|
|JXUF1||7 mi||124 min||77°F|
|DMSF1||11 mi||124 min||78°F|
|BLIF1||12 mi||124 min||NNE 13 G 17||77°F||1023.9 hPa||75°F|
|LTJF1||15 mi||124 min||77°F||70°F|
|MYPF1 - 8720218 - Mayport (Bar Pilots Dock), FL||17 mi||124 min||NE 17 G 19||76°F||77°F||1023.2 hPa|
|FRDF1 - 8720030 - Fernandina Beach, FL||30 mi||124 min||N 8.9 G 13||74°F||75°F||1023.9 hPa|
|RCYF1||34 mi||124 min||77°F|
|SAUF1 - St. Augustine, FL||37 mi||142 min||NNE 17 G 19||77°F||77°F||1022.2 hPa (+1.1)|
|41112 - Offshore Fernandina Beach, FL (132)||37 mi||112 min||77°F||5 ft|
|41117||38 mi||120 min||78°F||6 ft|
|GTXF1 - Guana Tolomato Matanzas Reserve, FL||50 mi||157 min||ENE 8||80°F||1024 hPa||64°F|
Wind History for I-295 Bridge, St Johns River, FL(wind in knots) EDIT (on/off)  Help
Airport ReportsEDIT (on/off)  Help Click EDIT to display multiple airports
|Jacksonville Naval Air Station, FL||3 mi||29 min||NNE 15||10.00 mi||Mostly Cloudy||81°F||69°F||67%||1022.3 hPa|
|Jacksonville Craig Municipal Airport, FL||10 mi||29 min||NNE 10 G 18||10.00 mi||Overcast||79°F||70°F||74%||1022.7 hPa|
|Cecil Airport, FL||10 mi||32 min||NNE 8||10.00 mi||Mostly Cloudy||81°F||71°F||74%||1022.3 hPa|
|Jacksonville International Airport, FL||15 mi||86 min||NE 10||10.00 mi||Mostly Cloudy||80°F||70°F||71%||1023 hPa|
|Mayport Naval Station - Adm David L. McDonald Field, FL||17 mi||90 min||NNE 14||10.00 mi||Partly Cloudy||79°F||71°F||77%||1022.8 hPa|
Wind History from NIP (wind in knots)
|1 day ago||NE|
|2 days ago||N|
EDIT RT Ports Option Weekend mode (on/off) (on/off)  Help One Week of Data
|Ortega River Entrance |
Click for Map
Fri -- 05:42 AM EDT 5.70 feet Low Tide
Fri -- 07:32 AM EDT Sunrise
Fri -- 08:10 AM EDT Moonrise
Fri -- 11:48 AM EDT 7.08 feet High Tide
Fri -- 06:15 PM EDT 5.78 feet Low Tide
Fri -- 06:50 PM EDT Sunset
Fri -- 07:45 PM EDT Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
EDIT (on/off)  Help One Week of Data
|St. Johns River Entrance |
Click for Map
Fri -- 02:02 AM EDT -2.21 knots Max Ebb
Fri -- 05:29 AM EDT 0.01 knots Slack
Fri -- 07:31 AM EDT Sunrise
Fri -- 08:09 AM EDT Moonrise
Fri -- 08:16 AM EDT 2.51 knots Max Flood
Fri -- 11:29 AM EDT -0.01 knots Slack
Fri -- 02:53 PM EDT -2.37 knots Max Ebb
Fri -- 06:15 PM EDT 0.01 knots Slack
Fri -- 06:48 PM EDT Sunset
Fri -- 07:43 PM EDT Moonset
Fri -- 08:46 PM EDT 2.04 knots Max Flood
Fri -- 11:45 PM EDT -0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Weather Map and Satellite Images(on/off)  Help
|Weather Map ||IR Satellite Image from GEOS|
GOES Local Image of Southeast EDIT
Wind Forecast for Jacksonville, FL (12,3,4,5)(on/off)  Help
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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 numerious 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.