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 7:13AM||Sunset 7:24PM||Thursday September 21, 2017 5:09 PM EDT (21:09 UTC)||Moonrise 7:30AM||Moonset 7:37PM||Illumination 1%|
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|AMZ450 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- 302 Pm Edt Thu Sep 21 2017 |
Tonight..East northeast winds 10 to 15 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 11 seconds. Inland waters a light chop. A chance of showers after midnight.
Friday..East northeast winds 15 knots. Seas 4 to 6 feet with occasional seas up to 8 feet. Dominant period 13 seconds. Inland waters a moderate chop. A chance of showers.
Friday night..East northeast winds 15 knots. Seas 5 to 7 feet with occasional seas up to 9 feet. Dominant period 15 seconds. Inland waters a moderate chop. A chance of showers.
Saturday..East northeast winds around 15 knots. Seas 5 to 7 feet with occasional seas up to 9 feet. Dominant period 14 seconds. Inland waters a moderate chop. Showers likely in the morning. A chance of showers in the afternoon.
Saturday night..East northeast winds 15 to 20 knots. Seas 6 to 9 feet with occasional seas up to 11 feet. Inland waters a moderate chop. A chance of showers.
Sunday and Sunday night..Northeast winds 15 to 20 knots. Seas 6 to 9 feet with occasional seas up to 11 feet. Inland waters choppy. A slight chance of showers.
Monday..North northeast winds 10 to 15 knots. Seas 5 to 7 feet with occasional seas up to 9 feet. Inland waters a moderate chop.
Monday night..Northeast winds 10 knots, becoming north after midnight. Seas 4 to 6 feet with occasional seas up to 8 feet. Inland waters a light chop.
Tuesday..North northwest winds around 10 knots, becoming northeast in the afternoon. Seas 4 to 6 feet with occasional seas up to 8 feet. Inland waters a light chop.
|AMZ400 Synopsis For Altamaha Sound Ga To Flagler Beach Fl Out To 60 Nm- 302 Pm Edt Thu Sep 21 2017 |
Synopsis.. High pressure will remain positioned to the north of our waters as hurricane maria passes more than 500 miles to the east of the northeast florida and southeast georgia coast this weekend. Onshore winds will strengthen and seas will build beginning on Friday, with small craft advisory level seas expected from Friday night through at least Monday in the near shore waters, with advisory level seas persisting offshore through at least Tuesday.
7 Day Forecast for Marine Location Near Homeland, GAHourly EDIT Help
Area Discussion for - Jacksonville, FL  (on/off)  Help NOTE: mouseover dotted underlined text for definition
|Fxus62 kjax 212019|
area forecast discussion
national weather service jacksonville fl
419 pm edt Thu sep 21 2017
Building seas with a high rip current risk at area beaches
Friday through Monday...
Early afternoon surface analysis depicts high pressure (1022
millibars) over the appalachian mountains. The large eye (40
nautical miles) of major hurricane maria was located about 975
miles to the southeast of mayport, fl, with the hurricane moving
northwestward at 9 mph. Weakening tropical storm jose was nearly
stationary and was centered about 150 miles southeast of
nantucket, ma. Aloft... A narrow ridge extends from the arklatex
region northeastward through the eastern portions of the great
lakes, while a trough extends southwestward from tropical storm
jose into southeast georgia. The presence of this trough axis and
cooling temperatures aloft has resulted in scattered slow moving
convective development over inland southeast georgia and western
portions of the suwannee valley this afternoon. A few showers have
also developed further eastward along the i-10 corridor in the
metropolitan jacksonville area, but this activity has been shallow
and generally short-lived. Inland temperatures have generally
reached 90 degrees outside of areas impacted by convection, with
onshore winds keeping coastal locations in the low to mid 80s.
Dewpoints range from the mid 60s inland to the lower 70s in
coastal locations as of 20z.
Near term (this afternoon through Friday night)
Convection over the western suwannee valley, interior portions of
southeast georgia (generally west of an alma to waycross line)
and the i-75 corridor will continue to move slowly through the
late afternoon hours. Cooling temperatures aloft will support the
chance for a few strong thunderstorms through sunset, with gusty
winds of 40-50 mph and frequent lightning strikes being the main
threats. Activity should quickly weaken early this evening, with
cloudiness increasing at coastal locations overnight as convergent
easterly flow begins to strengthen. Scattered showers will likely
begin to move onshore from the atlantic waters into flagler
county during the predawn hours, with activity likely remaining
south of st. Augustine through sunrise. Some patchy fog will be
possible for inland locations along and north of interstate 10
during the predawn hours, but confidence remains fairly low at
this time, so we did not include this in the forecast grids.
Inland lows will fall to near 70, with onshore winds at 5-10 mph
keeping coastal lows in the mid to upper 70s.
An upper level trough will remain positioned over inland southeast
georgia and the florida big bend on Friday, with cool mid-level
temperatures (around -9 degrees at 500 millibars) continuing over
much of our region. A slightly drier air mass will advect over the
interstate 10 corridor and southeast georgia, where pwats will
fall to around 1.5 inches. A tightening pressure gradient is
expected in coastal locations as surface ridging begins to expand
southward from the appalachians and maria impacts the southeastern
bahamas. Convergent and deepening east-northeast flow will bring a
band of showers into flagler county during the morning hours, with
activity mainly confined from a st. Augustine to gainesville line
through the afternoon hours. A few thunderstorms will be possible
during the afternoon hours, mainly over the st. Johns basin in
putnam and eastern marion cos. Highs will range from the upper 80s
inland to the low mid 80s at area beaches, with breezy conditions
developing in coastal locations during the afternoon hours. Breezy
onshore winds will persist Friday night, with scattered coastal
showers increasing in areal coverage over northeast florida and
the st. Johns river basin. Lows will be similar to tonight's
Short term (Saturday through Sunday)
Synopsis... High risk of rip currents, rough surf and beach
erosion coastal flooding are expected this weekend due to
persistent onshore flow and large swells emanating from hurricane
maria. Isolated strong thunderstorms possible Saturday, with waves
of locally heavy rainfall. Drier conditions expected Sunday.
Temperatures will be mild and near seasonal values.
Sat & Sat night... Wet and unsettled especially across NE fl and
the SE ga coast where upper level dynamical lift on the east side
of a cut-off low retrograding west across the fl gulf coast will
override strong onshore flow between high pressure north of the
region and hurricane marina drifting northward, east of the
bahamas. Coastal showers will move onshore under breezy east winds
with the greatest coverage of rainfall across NE florida where the
deepest moisture will focus. Rainfall will be ongoing across the
coastal waters and coast during the morning, transitioning inland
through the day toward the interstate 75 corridor. Locally heavy
rainfall will be possible where training cells occur. Isolated
thunderstorms will be possible, which could produce even heavier
localized rainfall. A few stronger storms could also form given
cold 500 mb temps of -9 to -10 deg c and directional shear in the
hail growth zone, with hail, excessive lightning and gusty winds
possible in stronger storms. Rainfall will tapper off from east to
west during the afternoon and evening, with mostly dry conditions
expected inland by midnight, with a low chance of coastal showers
continuing overnight along the NE florida coast.|
Sun & Sun night... Drier air will filter over the region from the
ne which will bring lower rain chances than Saturday as hurricane
marina continues to track northward, away and well NE of the
bahamas. Locally, breezy onshore flow will continue with a low
chance of coastal showers, then a low chance of showers
transitioning inland into the afternoon across NE florida due to
daytime heating. Otherwise, mostly dry conditions under partly
cloudy diurnally driven cumulus and increasing subsidence that is
pulled farther south over the local area as maria treks farther
Long term (Monday through Thursday)
Mostly dry conditions expected as subsidence on the west side of
hurricane maria dominates across the SE atlantic region. There
remains very good model agreement tracking maria northward,
hundreds of miles east of the local coast Monday within the trough
axis trailing tropical storm jose. A dry northerly surface flow
will prevail as the center of maria tracks farther north Wed &
thu, with local surface flow becoming onshore near the coast due
to the sea breeze.
Temperatures will moderate this period from near normal highs in
the mid upper 80s Mon & Tue to above normal by Thu as stacked high
pressure builds eastward from the gulf coast region. Seasonally
cool minimum temperatures could drop below normal inland due to
dry airmass in place. At this time advertised mins ranging in the
mid upper 60s inland to low 70s along the st. Johns river basin
and atlantic coast.
Vfr conditions will prevail at the regional terminals through at
least 09z. MVFR ceilings may be possible after 09z tonight at the
duval county terminals and sgj, with MVFR visibilities also
possible at gnv and vqq after 08z. Confidence for a sustained
period of MVFR conditions was highest at sgj, where brief and
mostly light showers may also impact the terminal after 10z.
Easterly surface winds will increase to 10-15 knots at the
coastal terminals and jax after 15z.
As the swell from tropical storm jose begins to fade, an east-
southeasterly swell originating from hurricane maria will push
into the offshore waters later tonight, building seas into the
caution range of 4-6 feet, with 3-5 feet expected near shore. A
small craft advisory for hazardous seas will be required for the
offshore waters beginning on Friday, with seas building to 6-9
feet. Seas will build to caution levels in the near shore waters
on Friday, with SCA conditions developing by Friday night. Our
local pressure gradient will tighten on Saturday as maria makes
its closest approach to our waters (more than 550 miles east of
mayport), with east-northeast winds strengthening to caution
levels of 15-20 knots offshore and just under caution levels near
shore. Offshore seas will peak in the 9-12 foot range on Saturday
night and Sunday, with near shore seas peaking at 6-9 feet. Winds
will turn to a more northerly direction and will decrease by
Monday, allowing near shore seas to fall back to caution levels by
Rip currents: moderate risk today due to lingering long period
east-northeasterly ocean swells originating from tropical storm
jose. High risk expected Friday through at least Monday as wave
heights build and long period swells originating from hurricane
Coastal flood advisory has been extended through the evening high
tide cycle on Friday for the st. Johns river basin, as minor
flooding continues during each high tide cycle from jacksonville
southward to palatka, while near moderate flooding continues south
of palatka into the welaka and ocklawaha river basins.
Strengthening onshore winds may keep the risk of minor to
moderate flooding in place during times of high tide into early
Moderate flooding continues along portions of the santa fe and st.
Mary's rivers, with minor flooding along the satilla river east of
waycross and portions of the upper suwannee river.
Preliminary point temps pops
Amg 70 88 68 85 10 20 10 20
ssi 77 85 76 82 10 10 20 40
jax 72 87 72 84 10 20 20 40
sgj 78 85 77 83 20 30 40 60
gnv 70 89 70 87 10 20 20 60
ocf 70 89 71 87 10 30 20 60
Jax watches warnings advisories
Fl... Coastal flood advisory until midnight edt Friday night for clay-
coastal duval-flagler-inland duval-putnam-st. Johns.
Nelson enyedi corless
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|
|FRDF1 - 8720030 - Fernandina Beach, FL||30 mi||51 min||E 6 G 8.9||85°F||84°F||1016 hPa|
|41112 - Offshore Fernandina Beach, FL (132)||36 mi||69 min||84°F||2 ft|
|BLIF1||43 mi||51 min||E 8.9 G 12||85°F||1016.2 hPa||76°F|
|DMSF1||43 mi||51 min||83°F|
|JXUF1||44 mi||51 min||83°F|
|MYPF1 - 8720218 - Mayport (Bar Pilots Dock), FL||46 mi||51 min||ENE 8 G 11||82°F||83°F||1015.7 hPa|
|SAXG1 - Sapelo Island Reserve, GA||46 mi||69 min||Calm||86°F||1015 hPa (-2.0)||73°F|
|LTJF1||46 mi||51 min||83°F||73°F|
|41008 - GRAYS REEF - 40 NM Southeast of Savannah, GA||63 mi||79 min||NE 3.9 G 5.8||81°F||83°F||2 ft||1015.6 hPa (-1.7)||73°F|
Wind History for Fernandina Beach, FL(wind in knots) EDIT (on/off)  Help
Airport ReportsEDIT (on/off)  Help Click EDIT to display multiple airports
|Brunswick / Glynco, GA||31 mi||74 min||E 7||10.00 mi||Fair||86°F||69°F||59%||1015.6 hPa|
Wind History from BQK (wind in knots)
|1 day ago||S||SE||SE||S||Calm||S||S||S||SW||SW||SW||SW||Calm||Calm||Calm||Calm||SW||SW||SW||SW||W||Calm||Calm||S|
|2 days ago||NE||E||E||Calm||Calm||Calm||Calm||Calm||Calm||Calm||Calm||Calm||Calm||Calm||Calm||Calm||W||W||W||W||NW||W||Calm||SE |
EDIT RT Ports Option Weekend mode (on/off) (on/off)  Help One Week of Data
|Burnt Fort |
Click for Map
Thu -- 01:52 AM EDT 3.47 feet High Tide
Thu -- 07:15 AM EDT Sunrise
Thu -- 08:30 AM EDT Moonrise
Thu -- 08:54 AM EDT -0.49 feet Low Tide
Thu -- 02:19 PM EDT 3.43 feet High Tide
Thu -- 07:25 PM EDT Sunset
Thu -- 08:36 PM EDT Moonset
Thu -- 09:19 PM EDT -0.44 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
EDIT (on/off)  Help One Week of Data
|Kings Ferry |
Click for Map
Thu -- 02:00 AM EDT 3.08 feet High Tide
Thu -- 07:15 AM EDT Sunrise
Thu -- 08:01 AM EDT -1.07 feet Low Tide
Thu -- 08:29 AM EDT Moonrise
Thu -- 02:27 PM EDT 3.04 feet High Tide
Thu -- 07:24 PM EDT Sunset
Thu -- 08:26 PM EDT -0.96 feet Low Tide
Thu -- 08:36 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 (17,4,5,8)(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.