Marine Weather and Tides
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 6:25AM||Sunset 8:33PM||Sunday June 25, 2017 4:52 AM EDT (08:52 UTC)||Moonrise 7:07AM||Moonset 9:08PM||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- 326 Am Edt Sun Jun 25 2017 |
Today..Southwest winds 5 to 10 knots in the morning...becoming south southeast 10 to 15 knots in the afternoon. Seas 2 to 3 feet. Dominant period 7 seconds. Inland waters a light chop. Showers and Thunderstorms likely in the afternoon.
Tonight..South winds 10 to 15 knots. Seas 2 to 4 feet. Dominant period 5 seconds. Inland waters a light chop. Showers and Thunderstorms likely.
Monday..West winds 5 to 10 knots becoming northeast in the afternoon. Seas 2 to 3 feet. Dominant period 6 seconds. Inland waters a light chop. A chance of showers and Thunderstorms in the morning, then showers and Thunderstorms likely in the afternoon.
Monday night..East northeast winds 5 to 10 knots becoming north northeast in the morning. Seas 2 to 3 feet. Dominant period 8 seconds. Inland waters smooth. A chance of showers and Thunderstorms.
Tuesday..East northeast winds 5 to 10 knots. Seas 1 to 2 feet. Inland waters a light chop. A chance of showers and Thunderstorms.
Tuesday night..East winds 5 to 10 knots. Seas 1 to 2 feet. Inland waters a light chop. A chance of showers and a slight chance of Thunderstorms.
Wednesday and Wednesday night..East winds 10 to 15 knots. Seas 2 to 3 feet. Inland waters a moderate chop. A chance of showers and a slight chance of Thunderstorms.
Thursday..East southeast winds 5 to 10 knots. Seas 2 to 3 feet. Inland waters a light 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- 326 Am Edt Sun Jun 25 2017 |
Synopsis.. A frontal boundary will push into the region late tonight through Monday and stall across or just south of the region through the middle of the week. A better chance of Thunderstorms expected over the coastal waters late this afternoon through Monday as the frontal boundary affects the region.
7 Day Forecast for Marine Location Near Orange Park, FLHourly EDIT Help
Area Discussion for - Jacksonville, FL  (on/off)  Help NOTE: mouseover dotted underlined text for definition
|Fxus62 kjax 250719|
area forecast discussion
national weather service jacksonville fl
319 am edt Sun jun 25 2017
Near term through tonight
Another hot and humid day in store as upper ridging will slowly
get suppressed southward by longwave troughing. The longwave
trough will very slowly push a surface trough into southeast
georgia today. Numerous storms will develop along this trough this
afternoon and slowly shift southward and into northeast florida
by this evening. A second area of enhanced moisture already in
place across our southern zones will slowly shift northward
through the afternoon. The moist southwesterly flow will be
enough for scattered showers and storms to also develop across
our southern zones by early afternoon. The middle part of our
area (along and just north and south of the fl ga border) will
likely go deep into the afternoon before seeing much in the way
of convection, and this will support the hottest temps and heat
indices(100-105 degrees) across this area.
The combination of outflow boundaries surface trough across
southeast georgia will merge late in the day with the atlantic
seabreeze near the i-95 corridor to enhance convective coverage
and intensity late this afternoon through this evening near the
atlantic coast. Locally heavy rainfall will be the main threat,
but frequent lightning and gusty winds in wet downbursts will also
be possible with the strongest storms. The trough will likely
stall across our area overnight and remain the focus for
additional showers storms through the overnight hours, although
coverage and intensity should begin to wane by around midnight.
Short term Mon through wed...
mon... A surface front will slide southward across NE fl as surface
high pressure builds southward across the mid-west. High moisture
content with precipitable water values near 2 inches will stream
across the area along and ahead of the front, then as the front
settles across NE fl into the afternoon, drier NW flow will drop
pwat values below 1.5 inches across our NW ga zones with a
decrease in rainfall potential. Both the gfs40 nam12 indicate a
broad surface low forming along this front offshore of the ga sc
coast in response to a passing mid level short wave trough. The
formation of this low will slow the passage of the surface front
across the local area and also enhance onshore flow along the
coast Monday which could bring the potential for locally heavy
rainfall. Advertised highest rain chances near 60% along the
atlantic coast and NE fl with decreasing rain chances across our
nw ga zones where drier air will begin to infiltrate. Temperatures
will trend below normal under mostly cloudy skies with highs in
the mid upper 80s.
Mon night... Convection will gradually decrease in both coverage
and intensity Monday night with mostly dry conditions across SE ga
while a low chance of a passing shower or tstorm will continue
across NE fl under onshore flow as the trough axis settles farther
south across north-central fl while becoming diffuse. Temperatures
will trend below climo with values in the mid upper 60s across
inland SE ga where drier air and clearing skies are expected. Near
to above normal lows in the low mid 70s will continue across NE fl
under mostly to partly cloudy skies. Could see some inland fog
across SE ga after midnight through sunrise tue.
Tue-wed... Highest rain chances will focus across our NE fl
generally south of the i-10 corridor as high pressure builds from
the mid-west toward the mid-atlantic coast with drier conditions
across SE ga. Onshore flow will bring a chance of nocturnal and
early morning showers or an isolated tstorm inland along the|
atlantic coast, then convection will press inland toward i-75
through the day with an increase in coverage due to diurnal
heating. Temperatures will trend just below normal with highs in
the mid upper 80s with low temperatures ranging in the upper 60s
to lower 70s. Some patchy late night fog will be possible,
especially across parts of inland SE ga.
Long term Thu through sun...
mean layer ridge builds offshore of the mid-atlantic coast
Thursday with steering flow transitioning from E to more sse. This
pattern shift will lift lingering frontal moisture across central
and south florida northward, which will increase coverage of
diurnally enhanced sea breeze convection, under a continued
dominant east coast sea breeze regime thu. Fri and Sat the ridge
builds farther offshore over the atlantic with steering flow
veering to more southerly with pwats rising to 2 inches or more
across the entire forecast area once again. Under light southerly
steering flow 10 kts or less, anticipate both east and west coast
sea breeze to develop and press inland each day, with scattered to
numerous showers and tstorms focusing merging across inland areas
by late afternoon and evening. A weakening front approaches from
the wnw Sunday with local steering flow shifting to the ssw with
lingering high moisture content continuing above normal rain
chances. Temperatures will warm back to near climo values with
highs in the low 90s to mid upper 80s coast. Low temperatures will
hover near to just above climo and range in the 70s.
Vfr will prevail for much of the day, but numerous thunderstorms
are expected along the i-95 corridor late this afternoon through
this evening. Ifr conditions in heavy rain and gusty winds will
accompany this activity, and we have used prob30 groups at all but
gnv to show this potential. Much lower chances will exist near
gnv, so we will use vcsh there this afternoon. Storms near the
coast will begin to wane by around midnight but some additional
rain will be possible after midnight, especially near the coast.
Southerly winds around 10 to 15 knots will prevail through this
evening. A weak front will bring numerous storms to the waters
tonight and Monday. Winds will briefly become northeast around 10
knots behind the front on Monday, and then light and variable
winds are expected through Tuesday night. Easterly winds will
increase to around 15 knots on Wednesday and then settle to around
10 knots Wednesday night and Thursday.
Rip currents: moderate risk, mainly this afternoon, for increased
southeast winds with the seabreeze, and residual swell activity.
Preliminary point temps pops
Amg 90 72 85 68 70 40 30 20
ssi 90 76 83 73 60 60 40 20
jax 94 74 86 72 60 60 60 30
sgj 91 75 85 73 50 60 70 40
gnv 93 74 88 71 40 30 70 30
ocf 91 74 89 72 50 20 70 40
Jax watches warnings advisories
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||3 mi||52 min||W 1.9 G 4.1||79°F||86°F|
|JXUF1||9 mi||52 min||85°F|
|NFDF1||11 mi||52 min||SW 5.1 G 7||80°F||1018.7 hPa (-0.6)||74°F|
|DMSF1||12 mi||52 min||85°F|
|BLIF1||13 mi||52 min||SSW 5.1 G 6||80°F||1019 hPa (-0.4)||77°F|
|LTJF1||16 mi||52 min||79°F||76°F|
|MYPF1 - 8720218 - Mayport (Bar Pilots Dock), FL||17 mi||52 min||SW 5.1 G 6||79°F||82°F||1018.5 hPa (-0.5)|
|RCYF1||31 mi||52 min||87°F|
|FRDF1 - 8720030 - Fernandina Beach, FL||32 mi||52 min||SSE 2.9 G 5.1||79°F||84°F||1018.6 hPa (-0.6)|
|SAUF1 - St. Augustine, FL||34 mi||52 min||S 4.1 G 5.1||77°F||77°F||1018.6 hPa (-0.5)||75°F|
|41117||36 mi||60 min||78°F||2 ft|
|41112 - Offshore Fernandina Beach, FL (132)||38 mi||52 min||80°F||3 ft|
|GTXF1 - Guana Tolomato Matanzas Reserve, FL||47 mi||67 min||SW 1.9||78°F||1020 hPa||76°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||0 mi||59 min||SSW 4||10.00 mi||Mostly Cloudy||81°F||72°F||74%||1018 hPa|
|Jacksonville Craig Municipal Airport, FL||11 mi||59 min||N 0||10.00 mi||Fair||78°F||73°F||85%||1018.2 hPa|
|Cecil Airport, FL||11 mi||57 min||N 0||10.00 mi||Fair||72°F||71°F||100%||1018.3 hPa|
|Mayport Naval Station - Adm David L. McDonald Field, FL||17 mi||60 min||SW 3||10.00 mi||Fair||78°F||75°F||93%||1018.1 hPa|
|Jacksonville International Airport, FL||18 mi||1.9 hrs||SSW 4||10.00 mi||Mostly Cloudy||75°F||73°F||94%||1018 hPa|
Wind History from NIP (wind in knots)
|1 day ago||SE||S||S||S||S||S|
|2 days ago||SE||SE||S||S||S||S||S||S||S||S||S||SE||E||E||S||NW|
EDIT RT Ports Option Weekend mode (on/off) (on/off)  Help One Week of Data
|Piney Point |
Click for Map
Sun -- 12:46 AM EDT 6.71 feet High Tide
Sun -- 06:26 AM EDT Sunrise
Sun -- 07:14 AM EDT 5.65 feet Low Tide
Sun -- 08:07 AM EDT Moonrise
Sun -- 12:48 PM EDT 6.59 feet High Tide
Sun -- 07:20 PM EDT 5.46 feet Low Tide
Sun -- 08:32 PM EDT Sunset
Sun -- 10:08 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
Sun -- 02:18 AM EDT -2.57 knots Max Ebb
Sun -- 06:25 AM EDT Sunrise
Sun -- 06:27 AM EDT 0.00 knots Slack
Sun -- 08:06 AM EDT Moonrise
Sun -- 08:53 AM EDT 2.07 knots Max Flood
Sun -- 11:52 AM EDT -0.00 knots Slack
Sun -- 02:32 PM EDT -2.39 knots Max Ebb
Sun -- 06:23 PM EDT 0.00 knots Slack
Sun -- 08:31 PM EDT Sunset
Sun -- 09:15 PM EDT 2.93 knots Max Flood
Sun -- 10:07 PM EDT Moonset
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 (4,6,7,8)(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.