Wednesday, August21, 2019 L-36.com


Marine Weather and Tides
Jacksonville, FL

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7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports.
6/2/2019. Many thanks to a user for reporting an error on one of the Edit pages. The switch to PHP 7.2 caused many pages that previously worked to quit working. I fixed many but I still depend on users to report ones I missed. Please report errors HERE or send an email to me at L-36.com. Allen

Sunrise 6:55AMSunset 8:03PM Wednesday August 21, 2019 4:54 PM EDT (20:54 UTC) Moonrise 10:44PMMoonset 11:09AM Illumination 63% Phase: Waning Gibbous; Moon at 21 days in cycle
NOTE: Some of the data on this page has not been verified and should be used with that in mind. It may and occasionally will, be wrong. The tide reports are by xtide and are NOT FOR NAVIGATION.
Marine Forecasts
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AMZ452 Expires:201908220500;;994669 Fzus52 Kjax 211904 Cwfjax Coastal Waters Forecast For Northeast Florida/southeast Georgia National Weather Service Jacksonville Fl 304 Pm Edt Wed Aug 21 2019 Atlantic Coastal Waters From Altamaha Sound Ga To Flagler Beach Fl Out To 60 Nm. Seas Are Provided As A Range Of The Average Height Of The Highest 1/3 Of The Waves, Along With The Occasional Height Of The Average Highest 1/10 Of The Waves. Amz450-452-454-220500- 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- 304 Pm Edt Wed Aug 21 2019
Tonight..South winds 5 to 10 knots. Seas 2 to 3 feet. Dominant period 9 seconds. Inland waters a light chop.
Thursday..South winds around 5 knots becoming southeast in the afternoon. Seas 2 to 3 feet. Dominant period 9 seconds. Inland waters smooth.
Thursday night..South southeast winds 5 to 10 knots. Seas 2 to 3 feet. Dominant period 8 seconds. Inland waters a light chop.
Friday..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.
Friday night..South southeast winds 5 to 10 knots. Seas 2 to 3 feet. Dominant period 6 seconds. Inland waters a light chop. A slight chance of showers and Thunderstorms.
Saturday..East southeast winds 5 to 10 knots. Seas 2 to 3 feet. Dominant period 7 seconds. Inland waters a light chop. A chance of showers and Thunderstorms.
Saturday night..East southeast winds 5 to 10 knots. Seas 2 to 3 feet. A chance of showers and Thunderstorms.
Sunday and Sunday night..East northeast winds 5 to 10 knots. Seas 2 to 3 feet. A chance of showers and Thunderstorms.
Monday..Northeast winds around 5 knots becoming east southeast in the afternoon. Seas 2 to 3 feet. A chance of showers and Thunderstorms.
AMZ400 Synopsis For Altamaha Sound Ga To Flagler Beach Fl Out To 60 Nm- 304 Pm Edt Wed Aug 21 2019
Synopsis.. Surface high pressure will extend over north florida through Thursday. A broad area of low pressure will approach the southeast florida atlantic coast late Friday, then begin to lift northward into the weekend.
Gulf stream.. The approximate location of the west wall of the gulf stream as of aug 20, 2019 at 1200 utc... 64 nautical miles east of flagler beach. 73 nautical miles east of saint augustine beach. 82 nautical miles east of jacksonville beach. 94 nautical miles east southeast of st simons island. This data courtesy of the naval oceanographic office.


7 Day Forecast for Marine Location Near Jacksonville, FL
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location: 30.28, -81.7     debug


Area Discussion for - Jacksonville, FL
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Fxus62 kjax 211945
afdjax
area forecast discussion
national weather service jacksonville fl
345 pm edt Wed aug 21 2019

Near term (through Thursday night)
This afternoon eve...

convection rather sparse across NE fl this afternoon due
to slightly drier over this area. Storms expected to be
more scattered across the i-75 corridor into inland SE ga
late this afternoon into the early eve where best convergence
and deepest moisture will be.

Thursday Thursday night...

a bermuda ridge axis will be near the state border while
there will be a lingering trough across SE ga. This will
yield a light flow regime across the area with seabreezes
and outflows able to push inland during the afternoon.

Models indicate slightly drier air will continue across
ne fl while pwats remain near to slightly above 2 inches
across SE ga. Thus highest pops will be across inland
se ga during the afternoon where deepest moist and best
convergence will be with isolated pops elsewhere. Near
climo temps.

Short term (Friday-Saturday night)
The ridge axis will nudge north across SE ga and weaken
some as a cold front begins to slide south towards SE ga
and a tropical wave moves across south fl. This will
yield a light onshore flow across the area which will
enable the east coast seabreeze to penetrate well inland
during the afternoon and evening. Models continue to
indicate slightly drier air will linger across NE fl
while moisture will be deeper across SE ga (near front)
and the far SE (near tropical wave) resulting in
higher pops (mainly diurnal) there. Temps will be
near to slightly above normal.

Long term (Sunday-Wednesday)
Potential wet pattern shaping up during the period as the
aforementioned cold front stalls washes out over the region
and the tropical wave over south fl moves offshore. The
nhc gives the disturbance a 20 percent chance of development
as it moves offshore early next week. Pops will be high
this period given the deep tropical moisture in the area
in combination with the stalled boundary and wave. Convection
will be mainly diurnal driven but may also have ocnl periods
of coastal showers. Temps will average slightly below normal
due to cloud cover.

Aviation Vfr conditions expected at coastal terminals including
ssi, crg and sgj through tomorrow morning under ese onshore flow
this afternoon near 10 kts. Tonight, land breeze develops which
will back winds ssw with speeds < 5 kts after 04z. Best chance of
afternoon restrictions today will focus inland with shower and
isolated thunderstorm activity, with highest chances at vqq and
gnv between 19-01z. Light south winds becomes calm inland through
midnight with lingering debris clouds gradually fading, but high
cirrus will continue overnight. Based on persistence, included
restrictions to MVFR at vqq after 08z thu.

Marine A bermuda ridge axis will be across the waters
this week bringing a south to southeast flow across the waters
with seas of 2 to 3 feet. A front will stall out across the
waters by the latter weekend into early next week while a
tropical wave moves offshore bringing an increase in shower
and thunderstorm activity.

Rip currents: low risk expected through Thursday.

Preliminary point temps pops
Amg 73 92 73 93 10 30 20 20
ssi 76 90 77 90 0 10 10 20
jax 73 92 73 92 0 20 10 10
sgj 74 89 75 89 0 20 10 10
gnv 72 91 73 91 20 20 20 20
ocf 72 91 73 91 20 20 20 20

Jax watches warnings advisories
Fl... None.

Ga... None.

Am... None.

Pp ae bn


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
JXUF1 7 mi55 min 85°F
NFDF1 9 mi55 min E 5.1 G 7 85°F 1020.5 hPa (-1.4)
DMSF1 11 mi55 min 85°F
BLIF1 12 mi55 min E 8 G 12 89°F 1019.6 hPa (-1.4)78°F
LTJF1 15 mi55 min 87°F
MYPF1 - 8720218 - Mayport (Bar Pilots Dock), FL 17 mi55 min ESE 7 G 11 86°F 83°F1019 hPa (-1.5)
FRDF1 - 8720030 - Fernandina Beach, FL 30 mi55 min 92°F 84°F1019.4 hPa (-1.4)
41112 - Offshore Fernandina Beach, FL (132) 37 mi55 min 85°F2 ft
SAUF1 - St. Augustine, FL 37 mi55 min ESE 9.9 G 11 83°F 83°F1018.6 hPa (-1.7)
41117 38 mi55 min 84°F2 ft
GTXF1 - Guana Tolomato Matanzas Reserve, FL 50 mi70 min ESE 7 87°F 1020 hPa87°F

Wind History for I-295 Bridge, St Johns River, FL
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Jacksonville Naval Air Station, FL3 mi62 minE 510.00 miMostly Cloudy91°F71°F52%1017.9 hPa
Jacksonville Craig Municipal Airport, FL10 mi62 minESE 7 G 1610.00 miFair89°F73°F59%1018.4 hPa
Cecil Airport, FL10 mi65 minVar 410.00 miMostly Cloudy95°F73°F50%1017.9 hPa
Jacksonville International Airport, FL15 mi59 minE 410.00 miMostly Cloudy90°F72°F56%1018 hPa
Mayport Naval Station - Adm David L. McDonald Field, FL17 mi63 minESE 1010.00 miPartly Cloudy88°F75°F68%1018.4 hPa

Link to 5 minute data for KNIP

Wind History from NIP (wind in knots)
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Last 24hrE6E6E7SE7SE5SE9SE7S6S5S5S6CalmCalmW3NW3CalmCalmS44S5CalmCalmE5E5
1 day agoS4E10SE63CalmNW5E5E9NE3CalmW3CalmCalmNE3CalmCalmNE3Calm3SE4SE65CalmE4
2 days agoW8S7S6W6SW55SW5SW3S5S7S8S7S8S7SW4SW6SW5S8S8S9W8
G20
W12NW83

Tide / Current Tables for Ortega River Entrance, Florida (5)
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Ortega River Entrance
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Wed -- 02:48 AM EDT     1.14 feet High Tide
Wed -- 06:57 AM EDT     Sunrise
Wed -- 09:13 AM EDT     0.35 feet Low Tide
Wed -- 12:09 PM EDT     Moonset
Wed -- 03:12 PM EDT     1.17 feet High Tide
Wed -- 08:02 PM EDT     Sunset
Wed -- 09:38 PM EDT     0.56 feet Low Tide
Wed -- 11:43 PM EDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.811.11.11.110.80.60.40.40.40.50.70.91.11.21.11.10.90.80.60.60.60.6

Tide / Current Tables for St. Johns River Entrance, Florida Current (2) (expired 1999-12-31)
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St. Johns River Entrance
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Wed -- 12:25 AM EDT     1.53 knots Max Flood
Wed -- 02:49 AM EDT     -0.00 knots Slack
Wed -- 05:41 AM EDT     -2.25 knots Max Ebb
Wed -- 06:55 AM EDT     Sunrise
Wed -- 10:08 AM EDT     0.00 knots Slack
Wed -- 12:08 PM EDT     Moonset
Wed -- 12:50 PM EDT     1.72 knots Max Flood
Wed -- 03:27 PM EDT     -0.00 knots Slack
Wed -- 06:10 PM EDT     -2.09 knots Max Ebb
Wed -- 08:01 PM EDT     Sunset
Wed -- 10:55 PM EDT     0.00 knots Slack
Wed -- 11:42 PM EDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.41.40.7-0.2-1.2-2.1-2.2-1.8-1.2-0.5-0.10.61.41.71.20.4-0.6-1.6-2.1-1.9-1.4-0.8-0.40

Weather Map and Satellite Images
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GOES Local Image of    EDIT
NOTE: East coast views moved to GEOS-16. They are experimental and not well supported by NOAA so they may not be correct so be warned. This change required redoing a large amount of the GOES code. If the image you are expecting is not showing, please let me know. You may need to use the EDIT function to update your location.
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Wind Forecast for Jacksonville, FL (16,3,4,5)
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Ground Weather Radar Station Jacksonville, FL
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Disclaimer:
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.