Monday, March18, 2019 L-36.com


Marine Weather and Tides
Jacksonville Beach, FL

Version 3.4
What's New / NOTES
10/6/2018 Colors of tide XTide graphs changed to emphasize that they were upgraded. See next note. Comments welcome.
10/4/2018 I have fixed XTide and updated the harmonic files. There were some name changes so you might have to click EDIT to find the new station name.

Sunrise 7:30AMSunset 7:36PM Monday March 18, 2019 11:46 AM EDT (15:46 UTC) Moonrise 4:07PMMoonset 4:56AM Illumination 94% Phase: Waxing Gibbous; Moon at 12 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:201903182130;;556079 Fzus52 Kjax 181321 Cwfjax Coastal Waters Forecast For Northeast Florida/southeast Georgia National Weather Service Jacksonville Fl 921 Am Edt Mon Mar 18 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. Amz450-452-454-182130- 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- 921 Am Edt Mon Mar 18 2019
.small craft exercise caution today...
.small craft advisory in effect from late tonight through Wednesday evening...
Rest of today..North northeast winds 15 to 20 knots. Seas 3 to 5 feet with occasional seas up to 7 feet. Dominant period 6 seconds. Inland waters a moderate chop.
Tonight..Northeast winds 20 to 25 knots. Seas 4 to 6 feet with occasional seas up to 8 feet. Dominant period 6 seconds. Inland waters choppy.
Tuesday..North northeast winds 20 to 25 knots with occasional gusts to around 35 knots. Seas 6 to 9 feet with occasional seas up to 11 feet. Dominant period 7 seconds. Inland waters rough. A chance of rain.
Tuesday night..North northeast winds 20 to 25 knots with occasional gusts to around 35 knots. Seas 6 to 9 feet with occasional seas up to 11 feet. Dominant period 8 seconds. Inland waters rough. A chance of rain late in the evening. A slight chance of rain after midnight.
Wednesday..North northeast winds 20 to 25 knots with gusts to around 35 knots. Seas 6 to 9 feet with occasional seas up to 11 feet subsiding to 5 to 7 feet with occasional seas up to 9 feet. Inland waters rough. A slight chance of rain.
Wednesday night..North winds 15 to 20 knots. Seas 5 to 7 feet with occasional seas up to 9 feet. Inland waters a moderate chop.
Thursday..North winds 10 to 15 knots. Seas 4 to 6 feet with occasional seas up to 8 feet. Inland waters a moderate chop.
Thursday night..Northwest winds 10 to 15 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Inland waters a light chop.
Friday..North northwest winds 10 to 15 knots becoming northeast. Seas 2 to 4 feet. Inland waters a moderate chop.
AMZ400 Synopsis For Altamaha Sound Ga To Flagler Beach Fl Out To 60 Nm- 921 Am Edt Mon Mar 18 2019
Synopsis.. High pressure will build in from the north with weak low pressure developing just north of the bahamas today and tonight. Strong high pressure will be reinforced to the north Tuesday and Wednesday as another low forms to the south. Small craft advisory conditions are expected to develop late tonight and continue through Wednesday night and Thursday.
Gulf stream.. The approximate location of the west wall of the gulf stream as of mar 16, 2019 at 1200 utc... 51 nautical miles east northeast of flagler beach. 49 nautical miles east of saint augustine beach. 49 nautical miles east of jacksonville beach. 46 nautical miles east southeast of st simons island. This data courtesy of the naval oceanographic office.


7 Day Forecast for Marine Location Near Jacksonville Beach, FL
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location: 30.29, -81.36     debug


Area Discussion for - Jacksonville, FL
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Fxus62 kjax 181320
afdjax
area forecast discussion
national weather service jacksonville fl
920 am edt Mon mar 18 2019

Becoming windy along the coast on Tuesday with rough surf, high
risk of rip currents and possible minor coastal flooding...

Update
Much drier airmass over the region as lower humidities advect in
on deep layer northwesterly flow. Skies generally partly cloudy
with mid and high clouds at times as an upper level trough over
nrn mexico and tx heads eastward toward our area. In fact, upper
level clouds will likely increase thicken as we approach this
evening. Temps are currently in the 40s over ga suwannee valley
and 50s to near 60 over rest of northeast fl. Enough breaks in
clouds for highs to reach the 60s to around 70, with northeast
winds, gusty near the coast. Another wave of low pressure will
form along the front located over the fl straits tonight bringing
a northward surge in moisture and a chance of rain to our SE zones
late tonight. Low temperatures tonight will be in the 40s inland... To
the lower 50s coast.

Aviation
Vfr conditions today with mid and high level clouds at times.

Winds will be from the nne today at 10 to 15 knots with gusts to
around 20 knots at sgj and crg. Increased clouds tonight and any
possible CIGS getting close to MVFR would be Tuesday morning for
sgj and crg.

Marine
Scec conditions expected today due to tighter pressure gradient
with lower pressure to our south and sprawling high pressure over
the central and ERN u.S. The main cwf updates were to raise sca
beginning tonight and continue through mid week and also to adjust
forecast wave heights today based on current buoy obs. What is
also concerning is a possible need for a gale watch-warning, if
indeed we see more frequent gusts to gale force in the tue-wed
time frame.

Seeing coastal water levels moving toward action stage, within a
few tenths, but not expected to have any issues through tonight.

As we continue to have increased winds and onshore flow and
approach full moon tue-thu, minor coastal flooding is possible at
high tides, with water levels near the 1 to 1.5 feet range above
the astronomical high tide.

Rip currents: moderate rip current risk today and surf will be
rough choppy. High risk on Tuesday and Wednesday as winds increase
and become more onshore producing rough surf with breakers
increasing to near 7 feet.

Fire weather
Low humidities are expected this afternoon in the 20-30% range over
inland areas but winds are expected to be less than 15 mph in the
those inland areas. Elevated dispersion values possible due to
higher mixing heights today.

Preliminary point temps pops
Amg 69 42 64 39 0 0 0 0
ssi 67 49 60 48 0 0 0 10
jax 70 49 64 47 0 0 10 10
sgj 67 54 65 53 0 10 30 20
gnv 71 48 66 46 0 0 20 10
ocf 71 49 68 48 10 0 30 10

Jax watches warnings advisories
Fl... None.

Ga... None.

Am... Small craft advisory from 2 am Tuesday to 10 am edt Thursday for
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.

Small craft advisory from 4 am Tuesday to 11 pm edt Wednesday
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.

Shashy mcginnis


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
MYPF1 - 8720218 - Mayport (Bar Pilots Dock), FL 8 mi35 min N 11 G 17 60°F 63°F1022.7 hPa
LTJF1 8 mi29 min 61°F 45°F
BLIF1 11 mi29 min NNE 8.9 G 11 61°F 1023.8 hPa45°F
41117 25 mi47 min 63°F5 ft
FRDF1 - 8720030 - Fernandina Beach, FL 27 mi29 min NNE 7 G 13
41112 - Offshore Fernandina Beach, FL (132) 29 mi17 min 62°F3 ft
SAUF1 - St. Augustine, FL 30 mi47 min N 20 G 23 62°F 63°F1022 hPa (+1.8)46°F
RCYF1 35 mi29 min 68°F
GTXF1 - Guana Tolomato Matanzas Reserve, FL 44 mi62 min N 12 63°F 1022 hPa50°F

Wind History for I-295 Bridge, St Johns River, FL
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Mayport Naval Station - Adm David L. McDonald Field, FL8 mi55 minN 1310.00 miMostly Cloudy61°F46°F60%1022.4 hPa
Jacksonville Craig Municipal Airport, FL9 mi54 minN 910.00 miFair60°F45°F58%1022.5 hPa
Jacksonville Naval Air Station, FL17 mi54 minN 1110.00 miMostly Cloudy61°F41°F48%1022.4 hPa
Jacksonville International Airport, FL22 mi1.8 hrsN 610.00 miMostly Cloudy56°F37°F51%1022.3 hPa
Northeast Florida Regional Airport, FL22 mi51 minNNE 17 G 2110.00 miA Few Clouds64°F46°F54%1022.1 hPa
Fernandina Beach Municipal Airport, FL23 mi72 minNE 1210.00 miFair61°F42°F51%1022.7 hPa

Wind History from NRB (wind in knots)
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Last 24hrN16
G21
N14NE14N11N12N13N11N12N12N9N9N10N12N11N14
G18
NW6N6N5NW6NW6NW5N7N8N13
1 day agoNE12NE14NE12N9NE7N9NE10NE10NE11NE10NE10N10N6NW5NW6N5N11NE11NE13NE13N11N12N10N14
2 days agoSW12S10SE8SE10SE11SE14SE13S13S12S11S10SW7SW7SW5W3W3W4NW8NW7N7N6NW8N6N13

Tide / Current Tables for Jacksonville Beach, Florida
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Jacksonville Beach
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Mon -- 12:13 AM EDT     -0.46 feet Low Tide
Mon -- 05:55 AM EDT     Moonset
Mon -- 06:30 AM EDT     5.79 feet High Tide
Mon -- 07:32 AM EDT     Sunrise
Mon -- 12:54 PM EDT     -0.36 feet Low Tide
Mon -- 05:07 PM EDT     Moonrise
Mon -- 06:56 PM EDT     5.41 feet High Tide
Mon -- 07:35 PM EDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-0.4-0.20.92.43.855.75.75.13.92.41-0-0.40.21.42.84.25.15.4542.61.1

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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Mon -- 03:45 AM EDT     0.00 knots Slack
Mon -- 05:55 AM EDT     Moonset
Mon -- 06:18 AM EDT     2.50 knots Max Flood
Mon -- 07:32 AM EDT     Sunrise
Mon -- 09:16 AM EDT     -0.01 knots Slack
Mon -- 12:16 PM EDT     -2.54 knots Max Ebb
Mon -- 04:28 PM EDT     0.01 knots Slack
Mon -- 05:06 PM EDT     Moonrise
Mon -- 06:45 PM EDT     2.19 knots Max Flood
Mon -- 07:35 PM EDT     Sunset
Mon -- 09:30 PM EDT     -0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-2.4-2.1-1.5-0.80.31.72.52.31.60.4-1.1-2.1-2.5-2.4-2-1.5-0.60.71.92.21.70.7-0.7-2

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 (11,2,3,4)
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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.