Marine Weather and Tides
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.
3/12/2015 - Added section for Gulf current for users in the GMZ marine zones.
This was requested by a user. If you have requests, please let me know.
|Sunrise 7:17AM||Sunset 7:44PM||Tuesday March 28, 2017 7:32 PM EDT (23:32 UTC)||Moonrise 6:51AM||Moonset 7:33PM||Illumination 2%|
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|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- 220 Pm Edt Tue Mar 28 2017 |
Tonight..South winds 10 to 15 knots becoming west southwest after midnight. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 10 seconds. Inland waters a light chop.
Wednesday..West northwest winds 5 to 10 knots becoming north northwest in the morning, then becoming east southeast in the afternoon. Seas 2 to 4 feet. Dominant period 10 seconds. Inland waters a light chop.
Wednesday night..East southeast winds 5 to 10 knots. Seas 2 to 4 feet. Dominant period 10 seconds. Inland waters smooth.
Thursday..Southeast winds 10 to 15 knots. Seas 2 to 4 feet. Dominant period 9 seconds. Inland waters a light chop. A chance of showers in the morning. A slight chance of showers and Thunderstorms in the afternoon.
Thursday night..South southeast winds 15 to 20 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Inland waters choppy. A slight chance of showers.
Friday..South 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.
Friday night..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 slight chance of showers and Thunderstorms.
Saturday..West northwest winds 5 to 10 knots becoming east southeast in the afternoon. Seas 2 to 3 feet. Inland waters smooth.
Saturday night..South winds around 5 knots. Seas 2 to 3 feet. Inland waters smooth.
Sunday..East southeast winds 5 to 10 knots. Seas 2 to 3 feet. Inland waters smooth.
|AMZ400 Synopsis For Altamaha Sound Ga To Flagler Beach Fl Out To 60 Nm- 220 Pm Edt Tue Mar 28 2017 |
Synopsis.. High pressure extending from the southeastern gulf of mexico to the southeastern seaboard will shift southward and will weaken through midweek. A weak cold front will move southward and stall near the georgia waters by late Wednesday. The front will lift back north as a warm front on Thursday ahead of an approaching cold front that will cross our waters on Friday night and early Saturday. Weak high pressure will build over our region this weekend in the wake of this front.
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 281803|
area forecast discussion
national weather service jacksonville fl
203 pm edt Tue mar 28 2017
Much above normal temperatures to continue this week...
Near term /tonight-Wednesday/
Rest of this afternoon... Visible satl imagery shows nicely wsw-ene
oriented fair weather cumulus cloud streets across all of SE ga
and NE fl with temps well into the lower to middle 80s in all
areas with sea breeze pinned at the coast for now, but will move
slowly inland to i-95 corridor the remainder of the afternoon.
Cu field a bit more organized across SW and central ga closer to
the trof axis and still a slight chance of a late afternoon or
evening shower/storm along the ocmulgee and altamaha river basins
across inland SE ga.
Tonight... Slight chance of an evening shower/storm along the
altamaha river basin before midnight otherwise weak trof axis will
slowly slide southward into SE ga overnight. Further southward
main weather impact will be potential for low stratus/fog pushing
out of the big bend/ne gomex region and into the i-75 corridor of
inland north fl towards morning and have updated forecast to
include areas of dense fog with advisory conds possible by
sunrise. Highest chances of dense fog are along the i-75 corridor
and suwannee river valley extending into the alapaha river basin
of SE ga, while still some uncertainty as to how much will be able
to progress into the st johns river basin and jax metro area just
after sunrise, it's possible but will have to see how the event
unfolds later tonight.
Wednesday... Weak boundary/trof remains stalled across SE ga and
washes out as new high pressure builds into the carolinas and
remaining high pressure center is over the fl peninsula. This will
leave the region in a weak pressure pattern with mostly sunny/partly
cloudy skies developing after the fog dissipation around 10 am.
Diurnal heating will drive MAX temps into the mid/upper 80s inland
with a few spots pushing close to 90f and near record highs listed
below and also weak pressure gradient will allow sea breezes from
both coasts to push further inland. Models trending towards
allowing for some widely scattered showers and possibly a storm to
develop on old boundary across SE ga during the afternoon hours
but rain chances remain low at this time.
Short term /Wednesday night through Friday night/
A warm front will extend southeast across the region from a midwest
low Thursday. Convergence along this boundary is expected to lead
to scattered showers and thunderstorms Thursday, mainly in the
afternoon. This front will lift north Thursday night, as a cold
front approaches from the west. A prefrontal trough is expected to
precede the main cold front, with models depicting most
convection occuring along this prefrontal trough Friday afternoon.
Models are trending toward a weaker passage with this trough, but
still could not rule out potential for a few strong to severe
storms. The cold front then crosses Friday night.
Temperatures will remain above normal this period.
Long term /Saturday through Tuesday/
High pressure will prevail across the region over the weekend with
above normal temperatures. A cold front will cross Monday into
Tuesday, bringing the potential for a round of showers and storms.
Vfr through the evening hours, then late tonight models coming
into better agreement for w/sw flow out of the gomex to help
develop advective stratus/fog event from the big bend region that
will push across NE fl around sunrise Wed morning. For now have
advertised lifr conds at gnv/vqq starting around 08-09z with
possible potential to impact the remaining NE fl TAF sites by
10-12z time frame but for now have kept just MVFR vsbys and left
low sct clouds around 500 ft. Low clouds/stratus should dissipate
around 14z Wed leavingVFR conds once again.
General southerly flow at 10-15 knots today become sely at the
coast with local sea breezes. Long period swells of 3-5 ft
nearshore and 4-6 ft offshore will continue with scec headlines
offshore. SW to W winds tonight at similar speeds as the swells
slowly start to decrease. Then light/variable flow Wed morning
will become onshore with local sea breezes by the afternoon.
A strong high pressure center over eastern canada will press
southward by late Wednesday and Thursday, pushing a weak frontal
boundary to near the georgia waters. This front will stall and
then move back northward as a warm front on Thursday night as a
cold front enters the southeastern states. This weather pattern
will tighten our local pressure gradient, with onshore winds
gradually strengthening on Thursday, reaching caution speeds for
the near shore and offshore waters by Thursday evening. Seas will
build to small craft advisory levels in the offshore waters on
Friday as winds become southerly. The front will cross our coastal
waters late on Friday afternoon, with offshore winds developing
and remaining at caution speeds on Friday night. Weak high
pressure will then build over our region this weekend, with winds
and seas quickly diminishing early on Saturday.
Rip currents: moderate risk continues today in the long period
swells with morning breaker/surf reports in the 3-5 ft range.
Swells begin to fade tonight/early Wed in the offshore flow and
expect marginal moderate risk to linger on Wednesday.
Climate Record MAX temperatures may be challenged across
se ga both Wed and thu.
Site march 29 march 30
jax 89/1991 89/1961
gnv 94/1907 94/1907
amg 86/1998 86/1998
ssi 85/2012 88/1954
Preliminary point temps/pops
Amg 62 86 61 83 / 0 20 10 40
ssi 64 78 64 76 / 0 10 10 20
jax 62 86 61 83 / 0 20 10 30
sgj 62 81 66 82 / 0 10 10 30
gnv 58 88 59 87 / 0 10 0 40
ocf 57 88 59 86 / 0 10 0 30
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|
|BKBF1||6 mi||44 min||W 2.9 G 6||84°F||71°F|
|JXUF1||7 mi||44 min||73°F|
|NFDF1||9 mi||44 min||SSW 1.9 G 4.1||85°F||1014.6 hPa|
|DMSF1||11 mi||44 min||71°F|
|BLIF1||12 mi||44 min||SE 8.9 G 12||78°F||1014.9 hPa||62°F|
|LTJF1||15 mi||44 min||75°F||62°F|
|MYPF1 - 8720218 - Mayport (Bar Pilots Dock), FL||17 mi||44 min||SSE 5.1 G 9.9||75°F||70°F||1014.9 hPa|
|FRDF1 - 8720030 - Fernandina Beach, FL||30 mi||44 min||SE 6 G 9.9||74°F||71°F||1015.2 hPa|
|RCYF1||34 mi||44 min||76°F|
|41112 - Offshore Fernandina Beach, FL (132)||37 mi||32 min||68°F||4 ft|
|SAUF1 - St. Augustine, FL||37 mi||32 min||SSE 14 G 15||71°F||69°F||1015.7 hPa (-0.5)|
|GTXF1 - Guana Tolomato Matanzas Reserve, FL||50 mi||107 min||SE 8||75°F||1016 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||39 min||WNW 7||10.00 mi||Partly Cloudy||85°F||52°F||32%||1013.9 hPa|
|Jacksonville Craig Municipal Airport, FL||10 mi||39 min||ESE 6||10.00 mi||Fair||78°F||61°F||56%||1014.3 hPa|
|Jacksonville, Cecil Field Airport, FL||10 mi||42 min||W 7||10.00 mi||Fair||84°F||53°F||35%||1014.2 hPa|
|Jacksonville, Jacksonville International Airport, FL||15 mi||36 min||WSW 4||10.00 mi||Partly Cloudy||83°F||55°F||38%||1014 hPa|
|Mayport, Mayport Naval Station, Adm David L. McDonald Field, FL||17 mi||40 min||SSE 11||10.00 mi||Partly Cloudy||74°F||62°F||67%||1014.4 hPa|
Wind History from NIP (wind in knots)
|1 day ago||E||E||E||SE||SE||S||S||S||S||S||SW||Calm||Calm||S||S||S||N||SE||SE||E||E||E|
|2 days ago||SE||SE||SE||SE||SE||SE||SE||Calm||Calm||Calm||Calm||Calm||Calm||S||S||S||S||SW||Calm||SE||E||E||E||E |
EDIT RT Ports Option Weekend mode (on/off) (on/off)  Help One Week of Data
|Ortega River Entrance |
Click for Map
Tue -- 05:31 AM EDT 5.68 feet Low Tide
Tue -- 07:20 AM EDT Sunrise
Tue -- 07:51 AM EDT Moonrise
Tue -- 11:36 AM EDT 7.10 feet High Tide
Tue -- 05:47 PM EDT 5.64 feet Low Tide
Tue -- 07:43 PM EDT Sunset
Tue -- 08:32 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
Tue -- 01:33 AM EDT -2.48 knots Max Ebb
Tue -- 05:36 AM EDT 0.00 knots Slack
Tue -- 07:19 AM EDT Sunrise
Tue -- 07:50 AM EDT Moonrise
Tue -- 08:12 AM EDT 2.35 knots Max Flood
Tue -- 11:17 AM EDT -0.01 knots Slack
Tue -- 01:56 PM EDT -2.46 knots Max Ebb
Tue -- 05:49 PM EDT 0.00 knots Slack
Tue -- 07:42 PM EDT Sunset
Tue -- 08:31 PM EDT Moonset
Tue -- 08:35 PM EDT 2.73 knots Max Flood
Tue -- 11:44 PM EDT -0.01 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 (19,4,5,8)(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.