Tuesday, January16, 2018 L-36.com


Marine Weather and Tides
Atlantic Beach, FL

Version 3.4
What's New / NOTES
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 7:21AMSunset 5:50PM Tuesday January 16, 2018 4:18 AM EST (09:18 UTC) Moonrise 6:56AMMoonset 5:39PM Illumination 0% Phase: New Moon; Moon at 29 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 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- 253 Am Est Tue Jan 16 2018
Today..North northeast winds 5 to 10 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 9 seconds. Inland waters a light chop.
Tonight..North northwest winds 5 to 10 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 10 seconds. Inland waters smooth.
Wednesday..Northwest winds 15 to 20 knots. Seas 4 to 6 feet with occasional seas up to 8 feet. Dominant period 10 seconds. Inland waters a moderate chop.
Wednesday night..North northwest winds 15 to 20 knots. Seas 4 to 6 feet with occasional seas up to 8 feet. Dominant period 10 seconds. Inland waters choppy.
Thursday..North winds 10 to 15 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Inland waters a moderate chop.
Thursday night..Northwest winds 5 to 10 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Inland waters a light chop.
Friday..West winds 5 to 10 knots. Seas 2 to 3 feet. Inland waters smooth.
Friday night..Southwest winds around 5 knots becoming northwest after midnight. Seas 2 to 3 feet. Inland waters smooth.
Saturday..North northeast winds around 5 knots becoming east in the afternoon. Seas 1 to 2 feet. Inland waters smooth.
AMZ400 Synopsis For Altamaha Sound Ga To Flagler Beach Fl Out To 60 Nm- 253 Am Est Tue Jan 16 2018
Synopsis.. Surface high will build southward into the region today. A strong cold front will move across the waters Wednesday, and then high pressure will build over the southeast region through the end of the week.

7 Day Forecast for Marine Location Near Atlantic Beach, FL
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location: 30.39, -81.4     debug


Area Discussion for - Jacksonville, FL
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Fxus62 kjax 160705
afdjax
area forecast discussion
national weather service jacksonville fl
205 am est Tue jan 16 2018

Near term through tonight
Another cool morning for the region with temperatures in the low
to mid 30s across southeast georgia and interior northeast
florida, with 40s along the coast of northeast florida due to
light onshore flow. Light winds and clear skies will allow for
areas to widespread frost to develop, and a frost advisory will
remain in effect until 9 am this morning.

An upper low near chicago this morning will begin to open up into
an upper trough, and the trough will dig southeastward across the
plains and into the tennessee valley late tonight. 125-135kt jet
streak will develop over the region this afternoon and tonight,
and increasing high clouds are expected. Surface high pressure
will build into the region from the north today ahead of a strong
cold front pushing into the southeast. The front will approach
southeast georgia late tonight. A brief warm-up in temperatures are
expected today, with highs only slightly below normal to near
normal. Temperatures will rise into the upper 50s to lower 60s
across interior southeast georgia, the suwannee valley and coastal
northeast florida, the mid 50s along the coast of southeast
georgia, and the mid to upper 60s across the rest of northeast
florida.

A weak area of low pressure will develop off the coast of the
carolinas and then move quickly northeastward off the coast of the
mid atlantic states tonight. A front will develop along this
boundary and extend towards south florida. Winds over the region
will shift to the northwest ahead of the surface boundary across
the southeast tonight. Winds will be light across the southeastern
portion of northeast florida, and patchy fog may develop.

Otherwise, dry and slightly warmer conditions will prevail. Lows
Wednesday morning from waycross northwestward will likely occur
after the frontal boundary moves through in the morning, and a
couple flurries or ice pellets are possible.

Short term Wednesday through Friday night ...

cold front is expected to move into SE ga Wednesday morning. Could
be enough moisture associated with this feature for a brief period
of rain sleet over SE ga, otherwise a dry frontal passage is
expected, with a band of clouds. The precipitation type forecast
can be enhanced closer to the event, based on timing and expected
thermal profiles.

High pressure will build to the northwest behind this boundary
with colder airmass filtering in through the day Wednesday, and
as the high builds closer the cold airmass will settle in for
Wednesday night into Thursday with mainly clear skies.

Temperatures will peak Wednesday morning in many locations then
remain steady or even fall Wednesday afternoon. Lows Wednesday
night will be in the lower to middle 20s leading to a hard freeze
over the majority of the region, except for between the st johns
and the sea, where readings will be closer to freezing. Wednesday
night will likely be the coldest night of the season thus far.

The high will build overhead Thursday afternoon through Friday,
then start moving to the east Friday night. Temperatures will
struggle once again Thursday with highs mainly in the 40s, and
another freeze to hard freeze Thursday night. As cold advection
subsides temperatures will start to make a recovery, but still
below seasonal averages.

Long term Saturday through Monday ...

high pressure will remain to the east of the region through Sunday
night leading to a period with warm advection. As moisture
increases through this period, clouds will increase on Sunday,
with a few showers possible. Temperatures should average above
seasonal normals for the weekend.

The flow Sunday afternoon into night will be from the southeast
bringing the warmer and more moist airmass across the relatively
cooler waters along the coast leading to the potential for sea fog
which could advect inland. A weakening cold front will move east
into the region Monday, bringing a chance for rain.

Aviation
Vfr conditions will prevail through the period. Light winds
overnight will become northeast 5-10 knots on Tuesday. Winds
will become light and variable again Tuesday night. High clouds
will increase through the period.

Marine
The pressure gradient will weaken today as high pressure builds
into the region. A strong cold front will push through the
atlantic waters on Wednesday, with SCA conditions developing once
again. High pressure will then build into the region from the west
through the end of the week. High pressure is then forecast to
build east of the region late in the weekend.

Rip currents: low risk of rip currents southeast georgia beaches,
and moderate risk of rip currents northeast florida beaches today.

Preliminary point temps pops
Amg 59 34 41 24 0 0 20 0
ssi 55 41 46 28 0 0 10 0
jax 61 36 49 27 0 0 0 0
sgj 59 42 53 30 0 0 0 0
gnv 65 39 51 25 0 0 0 0
ocf 67 41 54 26 0 0 0 0

Jax watches warnings advisories
Fl... Frost advisory until 9 am est this morning for alachua-baker-
bradford-clay-columbia-gilchrist-hamilton-inland duval-
inland nassau-putnam-suwannee-union.

Ga... None.

Am... None.

Kennedy 23


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
MYPF1 - 8720218 - Mayport (Bar Pilots Dock), FL 2 mi48 min N 5.1 G 7 47°F 50°F1029.3 hPa
LTJF1 3 mi48 min 47°F 42°F
BLIF1 7 mi48 min NW 1.9 G 2.9 42°F 1030.3 hPa42°F
DMSF1 8 mi48 min 51°F
JXUF1 12 mi48 min 52°F
FRDF1 - 8720030 - Fernandina Beach, FL 20 mi48 min WNW 2.9 G 4.1 43°F 49°F1030 hPa
41112 - Offshore Fernandina Beach, FL (132) 23 mi48 min 50°F4 ft
41117 32 mi56 min 52°F6 ft
SAUF1 - St. Augustine, FL 38 mi78 min N 8.9 G 9.9 51°F 50°F1028.3 hPa (-1.2)
RCYF1 42 mi48 min 53°F
GTXF1 - Guana Tolomato Matanzas Reserve, FL 51 mi93 min N 4.1 49°F 1030 hPa47°F

Wind History for Fernandina Beach, FL
(wind in knots)    EDIT      (on/off)   Help
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Last
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N6
G10
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G17
N12
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NE7
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NW7
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G12
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NE6
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W9
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NW7
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G11
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G11

Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Mayport Naval Station - Adm David L. McDonald Field, FL1 mi26 minN 610.00 miFair46°F42°F86%1029 hPa
Jacksonville Craig Municipal Airport, FL8 mi25 minNNW 410.00 miFair38°F37°F100%1029.1 hPa
Fernandina Beach Municipal Airport, FL16 mi45 minN 010.00 miFair39°F35°F87%1028.8 hPa
Jacksonville International Airport, FL17 mi22 minN 010.00 miFair36°F33°F89%1029.3 hPa
Jacksonville Naval Air Station, FL18 mi25 minNW 610.00 miA Few Clouds41°F36°F82%1029 hPa

Wind History from NRB (wind in knots)
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Last 24hrN11N11N13
G20
N10N16
G21
N11N13N12
G21
N12NE14N11N12NE11NE10NE9NE9NE10N10NE11NE11NE9NE7N5N6
1 day ago445N8N9N12
G19
N15
G21
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N12N13
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N13N11N9NW6N7N9
2 days agoW6W8NW10
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NW7NW7NW44NW7NW7NW7NW764NW4

Tide / Current Tables for Mayport Naval Station, Degausing Structure, Florida
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Mayport Naval Station
Click for Map
Tue -- 01:26 AM EST     -0.32 feet Low Tide
Tue -- 06:55 AM EST     Moonrise
Tue -- 07:22 AM EST     Sunrise
Tue -- 07:54 AM EST     4.90 feet High Tide
Tue -- 02:10 PM EST     -0.14 feet Low Tide
Tue -- 05:39 PM EST     Moonset
Tue -- 05:48 PM EST     Sunset
Tue -- 08:07 PM EST     4.09 feet High Tide
Tue -- 09:18 PM EST     New Moon
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.2-0.3-0.20.51.62.93.94.64.94.53.62.31.10.2-0.10.10.9233.74.13.93.11.9

Tide / Current Tables for St. Johns River Entrance, Florida Current
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St. Johns River Entrance
Click for Map
Tue -- 12:10 AM EST     -1.92 knots Max Ebb
Tue -- 03:49 AM EST     0.00 knots Slack
Tue -- 06:35 AM EST     2.28 knots Max Flood
Tue -- 06:55 AM EST     Moonrise
Tue -- 07:22 AM EST     Sunrise
Tue -- 09:57 AM EST     -0.01 knots Slack
Tue -- 01:16 PM EST     -2.02 knots Max Ebb
Tue -- 04:43 PM EST     0.00 knots Slack
Tue -- 05:39 PM EST     Moonset
Tue -- 05:48 PM EST     Sunset
Tue -- 07:02 PM EST     1.63 knots Max Flood
Tue -- 09:18 PM EST     New Moon
Tue -- 10:04 PM EST     -0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
-1.9-1.9-1.6-0.90.21.42.22.21.91.2-0.1-1.3-1.9-2-2-1.6-0.80.31.31.61.510.1-1.1

Weather Map and Satellite Images
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Weather Map
wmap_A
IR Satellite Image from GEOS
east_satellite

GOES Local Image of Southeast    EDIT
Geos

Wind Forecast for Jacksonville, FL (4,6,7,8)
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Ground Weather Radar Station Jacksonville, FL
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weather_mapweather_map weather_map

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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.