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 7:14AM||Sunset 7:22PM||Saturday September 23, 2017 8:55 AM EDT (12:55 UTC)||Moonrise 9:21AM||Moonset 8:48PM||Illumination 8%|
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- 401 Am Edt Sat Sep 23 2017 |
.small craft advisory in effect through late Monday night...
Today..East northeast winds 15 to 20 knots. Seas 5 to 7 feet with occasional seas up to 9 feet. Dominant period 14 seconds. Inland waters choppy. Isolated Thunderstorms in the morning. Scattered showers. Scattered Thunderstorms in the afternoon.
Tonight..Northeast winds 15 to 20 knots. Seas 6 to 9 feet with occasional seas up to 11 feet. Dominant period 15 seconds. Inland waters a moderate chop. A slight chance of showers and Thunderstorms in the evening.
Sunday..Northeast winds 15 to 20 knots. Seas 6 to 9 feet with occasional seas up to 11 feet. Dominant period 14 seconds. Inland waters a moderate chop.
Sunday night..North northeast winds 15 to 20 knots. Seas 6 to 9 feet with occasional seas up to 11 feet. Dominant period 15 seconds. Inland waters a moderate chop.
Monday..North northeast winds 10 to 15 knots. Seas 6 to 9 feet with occasional seas up to 11 feet. Inland waters a moderate chop.
Monday night..Northeast winds 5 to 10 knots becoming north northwest after midnight. Seas 6 to 8 feet with occasional seas up to 10 feet. Inland waters a light chop.
Tuesday..North winds 5 to 10 knots. Seas 5 to 7 feet with occasional seas up to 9 feet. Inland waters a light chop.
Tuesday night..North northwest winds 5 to 10 knots becoming west northwest after midnight. Seas 5 to 7 feet with occasional seas up to 9 feet. Inland waters a light chop.
Wednesday..North northwest winds 5 to 10 knots. 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- 401 Am Edt Sat Sep 23 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 coasts late this weekend. Onshore winds will gradually strengthen and seas will build today, with small craft advisory level seas expected through at least Tuesday night in the near shore waters and persisting offshore throughout much of next week. Winds will turn to a north northwesterly direction on Tuesday, with gradually decreasing speeds.
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 230751|
area forecast discussion
national weather service jacksonville fl
351 am edt Sat sep 23 2017
Near term (through tonight)
Some patchy fog across southeast georgia and west of highway 301
in northeast florida this morning. Breezy onshore winds are
pushing a few clusters of showers inland, and waves of showers
and thunderstorms are expected to develop and move onshore as we
go through the morning and into the afternoon. High temperatures
in the mid to upper 80s are expected as clouds increase. Pressure
gradient tightens and breezy conditions are expected across the
area today as surface high pressure across the ohio valley
strengthens, and hurricane maria turns northward. Upper level low
across the florida panhandle is expected to move southwest into
the gulf, and shift upper level flow more southerly. Pwats
approaching 2 inches are possible later today, so while mean flow
should keep showers moving westward at a steady clip, localized
areas could see heavy rainfall. Temperatures in the mid-levels
will be on the rise as the low moves away, but a few stronger
thunderstorms with gusty winds are possible this afternoon and
early evening with 500mb temperatures still between -7 to -9 c.
Rain chances will end from west to east by late afternoon early
evening. Winds will decrease over land tonight and remain
northeasterly. Overnight lows in the upper 60s to around 70 are
expected inland, and mid 70s closer to the coast.
Short term (Sunday through Monday)
Hurricane maria will be moving north well east of our coastline
near longitude 72.5w. Breezy NE winds along the east coast on
Sunday will weaken on Monday as high pressure to the north starts
to weaken and maria shifts further away. Drier air over the area
and subsidence around maria will decrease shower activity.
Long term (Tuesday through Friday)
Dry weather expected through most of next week as hurricane maria
moves up the east coast and an upper trough amplifies over the
eastern u.S. By late week. A dry NW flow will keep pops nil for ne
fl SE ga through Thursday. An approaching cold front may produce
a slight chance for rain on Friday. Temperatures will be a few
degrees above normal through the period.
Patchy ifr MVFR fog will continue across southeast georgia, and
inland locations across northeast florida could see some brief fog
as well this morning. Showers are increasing in coverage across
the coastal waters and moving inland already, and this is expected
to continue this morning and through the afternoon. Expect periods
of showers and some rumbles of thunder with associated MVFR
conditions across all the TAF sites, though confidence is low in
exact timing. Showers will end from east to west by late
afternoon early evening. Medium confidence that clouds will lift
into theVFR range for most of Saturday night and into Sunday
Small craft advisory continues as swells from maria increase
today, and northeast winds will also increase to around 20 knots.
Seas in the near shore waters will build to 5-7 feet this|
morning, and peak in the 6-9 foot range from tonight through
Monday night. 6 to 9 foot waves offshore will peak in the 10-12
foot range late tonight through Monday. SCA level seas are likely
to persist for much of next week in the offshore waters due to
large swells from maria, which is expected to turn northeastward
by late next week. Maria will pass our latitude on Monday well to
our east, allowing winds to shift to a northerly and then
northwesterly direction with decreasing speeds by late Monday and
Rip currents high surf: high risk of rip currents expected at area
beaches this weekend as swells from major hurricane maria
gradually build. A high surf advisory will likely be required for
coastal locations beginning tonight or early Sunday morning for
breakers in excess of 7 feet. Beach erosion will become an
increasing concern during times of high tide late this weekend and
early next week.
A coastal flood advisory remains in place through the Saturday
evening high tide cycle for the st. Johns river basin, as minor
flooding continues during each high tide cycle from jacksonville
southward to palatka. Further south, flooding approaches moderate
levels 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 next week.
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 north of i-10.
Preliminary point temps pops
Amg 87 68 87 68 40 10 10 0
ssi 83 75 84 73 30 10 10 0
jax 85 73 85 71 50 20 20 10
sgj 85 75 85 73 50 20 10 10
gnv 87 71 87 69 50 10 20 0
ocf 87 71 88 70 50 20 10 0
Jax watches warnings advisories
Fl... High rip current risk through Sunday evening for coastal duval-
coastal nassau-flagler-st. Johns.
Coastal flood advisory until 10 pm edt this evening for clay-
coastal duval-flagler-inland duval-putnam-st. Johns.
Ga... High rip current risk through Sunday evening for coastal camden-
Am... Small craft advisory until 5 am edt Tuesday for 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-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.
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||38 min||81°F|
|DMSF1||11 mi||38 min||82°F|
|BLIF1||12 mi||38 min||N 2.9 G 5.1||77°F||1015.4 hPa||76°F|
|LTJF1||15 mi||38 min||81°F||74°F|
|MYPF1 - 8720218 - Mayport (Bar Pilots Dock), FL||17 mi||38 min||NE 15 G 17||80°F||82°F||1014.9 hPa|
|FRDF1 - 8720030 - Fernandina Beach, FL||30 mi||38 min||NNE 5.1 G 8||80°F||82°F||1015.3 hPa|
|RCYF1||34 mi||38 min||82°F|
|SAUF1 - St. Augustine, FL||37 mi||56 min||NE 15 G 16||80°F||82°F||1013.8 hPa (+0.9)||80°F|
|41112 - Offshore Fernandina Beach, FL (132)||37 mi||26 min||82°F||5 ft|
|41117||38 mi||64 min||82°F||5 ft|
|GTXF1 - Guana Tolomato Matanzas Reserve, FL||50 mi||71 min||NW 1.9||75°F||1015 hPa||74°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||63 min||NNW 8||10.00 mi||A Few Clouds||77°F||73°F||88%||1013.9 hPa|
|Jacksonville Craig Municipal Airport, FL||10 mi||63 min||NNE 3||10.00 mi||Fair||75°F||70°F||84%||1014.1 hPa|
|Cecil Airport, FL||10 mi||66 min||NNE 5||7.00 mi||Fair||72°F||71°F||100%||1014.2 hPa|
|Jacksonville International Airport, FL||15 mi||60 min||N 6||6.00 mi||Fog/Mist||72°F||72°F||100%||1014.3 hPa|
|Mayport Naval Station - Adm David L. McDonald Field, FL||17 mi||64 min||NE 10||10.00 mi||A Few Clouds||79°F||73°F||85%||1013.9 hPa|
Wind History from NIP (wind in knots)
|1 day ago||NW||Calm||NE||N||NE||E||E||E||E||E||E||E||E||E||E||NE||NE||NE||NE||NE||NW||NW||N|
|2 days ago||SW||NE||E||N||E||SE||SE||SE||SE||SE||SE||S||S||S||S||W||W||Calm||Calm||Calm||Calm|
EDIT RT Ports Option Weekend mode (on/off) (on/off)  Help One Week of Data
|Ortega River Entrance |
Click for Map
Sat -- 01:13 AM EDT 6.98 feet High Tide
Sat -- 07:15 AM EDT Sunrise
Sat -- 07:34 AM EDT 5.75 feet Low Tide
Sat -- 10:20 AM EDT Moonrise
Sat -- 01:40 PM EDT 7.04 feet High Tide
Sat -- 07:21 PM EDT Sunset
Sat -- 08:06 PM EDT 5.82 feet Low Tide
Sat -- 09:48 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
Sat -- 12:56 AM EDT -0.00 knots Slack
Sat -- 03:34 AM EDT -2.12 knots Max Ebb
Sat -- 07:14 AM EDT Sunrise
Sat -- 07:21 AM EDT 0.00 knots Slack
Sat -- 10:04 AM EDT 2.28 knots Max Flood
Sat -- 10:19 AM EDT Moonrise
Sat -- 01:22 PM EDT -0.00 knots Slack
Sat -- 04:08 PM EDT -2.11 knots Max Ebb
Sat -- 07:20 PM EDT Sunset
Sat -- 08:08 PM EDT 0.00 knots Slack
Sat -- 09:47 PM EDT Moonset
Sat -- 10:34 PM EDT 1.83 knots Max Flood
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 (8,2,3,4)(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.