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 6:56AM||Sunset 8:03PM||Sunday August 20, 2017 9:02 PM EDT (01:02 UTC)||Moonrise 4:38AM||Moonset 6:23PM||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- 242 Pm Edt Sun Aug 20 2017 |
Tonight..Southeast winds 10 to 15 knots. Seas 2 to 3 feet. Dominant period 8 seconds. Inland waters a light chop. A chance of showers through the night. A slight chance of Thunderstorms after midnight.
Monday..East southeast winds 5 to 10 knots. Seas 2 to 3 feet. Dominant period 8 seconds. Inland waters a light chop. A chance of showers and a slight chance of Thunderstorms.
Monday night..Southeast winds 5 to 10 knots. Seas 2 to 3 feet. Dominant period 8 seconds. Inland waters a light chop. A slight chance of showers and Thunderstorms in the evening.
Tuesday..East southeast winds 5 to 10 knots. Seas 2 to 4 feet. Dominant period 9 seconds. Inland waters a light chop.
Tuesday night..Southeast winds 5 to 10 knots becoming south after midnight. Seas 2 to 4 feet. Inland waters a light chop.
Wednesday..South southeast winds 5 to 10 knots. Seas 2 to 4 feet. Inland waters smooth. A slight chance of showers and Thunderstorms.
Wednesday night..South southwest winds 10 to 15 knots. Seas 2 to 3 feet. Inland waters a moderate chop. A chance of showers and Thunderstorms.
Thursday..South winds 10 to 15 knots. Seas 2 to 3 feet. Inland waters a light chop. Showers and Thunderstorms likely.
Thursday night..South winds 10 to 15 knots becoming west southwest 5 to 10 knots after midnight. Seas 2 to 4 feet. Inland waters a light chop. Showers likely and a chance of Thunderstorms.
Friday..North northeast winds 5 to 10 knots becoming east northeast in the afternoon. Seas 2 to 3 feet. Inland waters a light chop. Showers and Thunderstorms likely.
|AMZ400 Synopsis For Altamaha Sound Ga To Flagler Beach Fl Out To 60 Nm- 242 Pm Edt Sun Aug 20 2017 |
Synopsis.. High pressure ridge axis will shift to the north through Tuesday. A cold front will move push into the southeast in the middle of the week, and then push into the coastal waters by the end of the week.
7 Day Forecast for Marine Location Near Lakeside, FLHourly EDIT Help
Area Discussion for - Jacksonville, FL  (on/off)  Help NOTE: mouseover dotted underlined text for definition
|Fxus62 kjax 201841|
area forecast discussion
national weather service jacksonville fl
241 pm edt Sun aug 20 2017
Near term through Monday
Another hot august day was observed across the region with
temperatures in the low to mid 90s. Only widely scattered showers
and storms have developed thus far this afternoon due to the
subsidence aloft and the slow progression of the east coast sea
breeze. Expect scattered to numerous showers and storms to develop
across the interior in the moisture tongue that exists from west
of st. Simons to the suwannee valley. A few strong storms with
gusty winds and small hail are possible. Scattered showers storms
will remain along the suwannee valley towards i-75 in the evening,
dissipating a few hours after sunset. As a trough approaches the
region tonight, shower chances will increase along the coast
overnight. Overnight lows will be in the 70s.
Upper level low over the south central gulf of mexico will shift
to the western gulf on Monday. An +pv anomaly associated with an
inverted trough wave was located from south central florida
northeastward into the western atlantic. This feature shows up
well on satellite, with significant cloud across southern and
central florida, and to the east of the region this afternoon. The
trough will slide north to northwestward tonight and Monday,
moving to the northeast florida coastline by Monday morning. A
strong upper level ridge across the western atlantic will build
across georgia and the southeast on Monday. A vort MAX associated
with the inverted trough over south central florida this afternoon
will move over northeast florida on Monday, and this will bring
deep moisture to the area, with precipitable water values above 2
inches. In addition, increasing cloud cover and rainfall chances
are expected along the coast late tonight into Monday morning.
Scattered showers and storms will then move inland through the day
as the wave axis shifts across the interior. Mostly cloudy skies
are expected across the southeastern half of the region Monday
morning, with clouds spreading inland as the trough moves to the
northwest. The best viewing locations for the eclipse on Monday
are northwest of alma and possibly along the coast in northeast
florida to the east of i-95 as the wave axis pushes across the
interior and a weak east coast sea breeze moves inland. Otherwise,
mostly cloudy skies will prevail through the day with scattered
showers and storms. Temperatures are forecast to be lower on
Monday due to cloud cover and scattered showers storms, with highs
in the upper 80s to lower 90s.
Short term Monday night through Tuesday night
Monday night... There will some drier air with precipitable water
values 1.30 to 1.60 inches working its way into north central
florida early Monday evening, in the wake of exiting trof axis
that moves into the gulf of mexico. However, moisture rich
atmosphere will exist between just south of i-10 corridor to just
north of georgia highway 82. Between this defined area and mainly
along and west of highway 301 some residual and ongoing convection
is most anticipated during the evening hours, then lifting
northward mainly north of the fl ga border during the late evening
through a couple hours past midnight, before everything abating
during the pre-dawn hours.
Tuesday and Tuesday night... Tuesday will feature a drier day
particularly south of i-10. Upper level ridge centered across the
southeast, and onshore flow continues as surface high pressure
moves further north across the mid atlantic. 30-40% pops are|
across the region where there will be lingering shortwave energy
may remain with remnant weak surface trof just north of the
altamaha river basin. The thunderstorm chances should diminish
pretty rapidly Tuesday night with the loss of heating and upper
ridging extending from the offshore atlantic through the region
into the NE gulf of mexico.
Long term Tuesday night through Saturday
A cold front will approach the altamaha river basin Wednesday
morning and reside near the fl ga midday with pre-frontal trof
near i-10 during the afternoon. Strong heating and convergence
into a prefrontal trough supports thunderstorms mainly in the
afternoon. Consensus models and superblend have pops 30 to 50
percent. The thunderstorm chance will continue Wednesday night and
Thursday with the front in the area. It looks to be drier with
the front just off the coast Friday and Saturday, but confidence
is low with the front lingering not far to the east. Best chances
of rain will mainly be over NE florida particularly over the
eastern sections. A more consolidated tropical low may eventually
form along the remnant boundary across the east-central fl coast
Friday morning and shift east then NE over the open atlantic late
Friday through Saturday. Temperatures should remain above normal
ahead of the front through Wednesday. Expect maximum heat index
readings 100 to 105 Wednesday afternoon. The GFS and ECMWF mos
support near normal temperatures Thursday through Saturday.
An isolated shower moved over kcrg around 18z, and an isolated
storm moved north of kjax along the east coast sea breeze.
Showers storms will develop and push inland this afternoon. Best
chance for shower storms later this afternoon will be at kvqq and
kgnv. East to southeast winds 5-10 knots will prevail this
afternoon. Mid high clouds will increase overnight as a trough
moves towards the region, and showers are possible along the coast
late overnight into Monday morning. Have vcsh from late tonight
through the end of the TAF period with increasing cloud cover.
Surface ridge axis will continue to shift north of the area
resulting in an easterly flow. The surface ridge will remain
northeast of the region through Tuesday. A frontal boundary will
then shift into the southeast by the middle of the week and the
ridge will shift back to the south.
Rip currents: low risk today, and low to moderate risk of rip
currents on Monday.
Preliminary point temps pops
Amg 75 91 74 92 10 30 20 30
ssi 78 87 78 89 40 50 20 20
jax 76 89 75 91 30 40 20 10
sgj 75 88 77 89 30 40 10 10
gnv 73 90 74 93 20 40 10 20
ocf 74 91 74 93 10 30 10 20
Jax watches warnings advisories
Kennedy cordero mcginnis
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||ESE 4.1 G 7||84°F||89°F|
|JXUF1||18 mi||44 min||88°F|
|NFDF1||21 mi||44 min||ESE 7 G 8.9||85°F||1019 hPa||77°F|
|DMSF1||21 mi||44 min||87°F|
|BLIF1||23 mi||44 min||SSE 6 G 8||85°F||1019.2 hPa||82°F|
|LTJF1||24 mi||44 min||84°F||78°F|
|RCYF1||25 mi||44 min||88°F|
|MYPF1 - 8720218 - Mayport (Bar Pilots Dock), FL||26 mi||44 min||SE 4.1 G 9.9||84°F||84°F||1018.7 hPa|
|SAUF1 - St. Augustine, FL||32 mi||62 min||SSE 12 G 13||83°F||83°F||1018 hPa (+0.7)||78°F|
|41117||37 mi||40 min||84°F||2 ft|
|FRDF1 - 8720030 - Fernandina Beach, FL||41 mi||44 min||SE 4.1 G 8||85°F||85°F||1019 hPa|
|GTXF1 - Guana Tolomato Matanzas Reserve, FL||42 mi||77 min||SE 8||83°F||1019 hPa||78°F|
|41112 - Offshore Fernandina Beach, FL (132)||48 mi||32 min||85°F||3 ft|
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||9 mi||69 min||SE 6||10.00 mi||Mostly Cloudy||86°F||75°F||70%||1017.5 hPa|
|Cecil Airport, FL||9 mi||72 min||N 0||10.00 mi||Fair||81°F||77°F||89%||1017.6 hPa|
|Jacksonville Craig Municipal Airport, FL||19 mi||69 min||SE 11||10.00 mi||Fair||83°F||75°F||79%||1017.7 hPa|
|Keystone Airpark, FL||24 mi||67 min||N 0||10.00 mi||Fair||79°F||77°F||94%||1018.3 hPa|
Wind History from VQQ (wind in knots)
|1 day ago||Calm||Calm||S||SW||Calm||Calm||Calm||Calm||Calm||S||SW||SW||SW||W||N||N||W||Calm|
|2 days ago||Calm||Calm||Calm||Calm||Calm||Calm||Calm||Calm||Calm||Calm||Calm||S||NW||S||SE||SW||W||W||Calm||SW||SW |
EDIT RT Ports Option Weekend mode (on/off) (on/off)  Help One Week of Data
|Doctors Lake |
Click for Map
Sun -- 05:38 AM EDT Moonrise
Sun -- 06:20 AM EDT 5.34 feet Low Tide
Sun -- 06:57 AM EDT Sunrise
Sun -- 11:50 AM EDT 6.15 feet High Tide
Sun -- 06:33 PM EDT 5.22 feet Low Tide
Sun -- 07:23 PM EDT Moonset
Sun -- 08:02 PM EDT Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
EDIT (on/off)  Help One Week of Data
|St. Johns River at Buckman Bridge |
Click for Map
Sun -- 05:37 AM EDT -0.31 feet Low Tide
Sun -- 05:37 AM EDT Moonrise
Sun -- 06:56 AM EDT Sunrise
Sun -- 10:56 AM EDT 0.62 feet High Tide
Sun -- 05:43 PM EDT -0.41 feet Low Tide
Sun -- 07:23 PM EDT Moonset
Sun -- 08:02 PM EDT Sunset
Sun -- 11:30 PM EDT 0.72 feet High Tide
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 (21,6,7,8)(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.