Friday, December15, 2017 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 7:13AMSunset 5:28PM Friday December 15, 2017 6:44 PM EST (23:44 UTC) Moonrise 4:46AMMoonset 3:58PM Illumination 6% Phase: Waning Crescent; Moon at 27 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- 202 Pm Est Fri Dec 15 2017
Tonight..North northwest winds 10 to 15 knots. Seas 2 to 3 feet. Dominant period 10 seconds becoming 3 seconds after midnight. Inland waters a moderate chop.
Saturday..North northeast winds 5 to 10 knots. Seas 2 to 3 feet. Dominant period 4 seconds. Inland waters a light chop.
Saturday night..Northeast winds 5 to 10 knots. Seas 1 to 2 feet. Dominant period 4 seconds increasing to 10 seconds after midnight. Inland waters a light chop.
Sunday..East winds 5 to 10 knots. Seas 1 to 2 feet. Dominant period 10 seconds. Inland waters smooth.
Sunday night and Monday..South southeast winds 5 to 10 knots. Seas 2 to 3 feet. Inland waters mostly smooth.
Monday night..South southwest winds 10 to 15 knots. Seas 2 to 3 feet. Inland waters a moderate chop. A slight chance of showers.
Tuesday..Southwest winds around 10 knots. Seas 2 to 3 feet. Inland waters a light chop. A slight chance of showers.
Tuesday night..West winds 10 to 15 knots. Seas 1 to 2 feet. Inland waters a light chop. A chance of showers.
Wednesday..North northwest winds 10 to 15 knots becoming northeast in the afternoon. Seas 2 to 4 feet. Inland waters a moderate chop. A chance of showers.
AMZ400 Synopsis For Altamaha Sound Ga To Flagler Beach Fl Out To 60 Nm- 202 Pm Est Fri Dec 15 2017
Synopsis.. A cold front will move south of area waters tonight, with high pressure building from the northwest overnight. The high will build to the north Saturday, then northeast Saturday night into Sunday. The high will build to the east into the early part of next 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 151852
afdjax
area forecast discussion
national weather service jacksonville fl
152 pm est Fri dec 15 2017

Near term through Saturday
Surface cold front will move south of the region early this evening.

Secondary trough will slide south across region tonight. Significant
mid level moisture along this secondary boundary could result in a
few isolated showers over SE ga this afternoon. High pressure will
build from the northwest late tonight into Saturday. This will
provide clearing from north to south through the day Saturday.

Temperatures are expected to be below normal for Saturday.

Short term Sat night-Monday
Sat night... High pressure settles over the ga carolinas region
with mostly clear skies except for a few high clouds push in aloft
towards morning. Min temps in the upper 30s across inland SE ga
and in the 40s elsewhere and near 50 along NE fl coast.

Sunday... High pressure drift off the SE us coast and expect
steering flow to become W SW with temps warming well into the 70s
for NE fl and near 70 across SE ga. Cloud cover slowly increases
as more high clouds stream across the region from the gomex.

Sun night... Enough moisture in SW flow on the back side of high
pressure ridge pushes out of the north gomex and will trigger some
shower activity across inland SE ga. Otherwise skies becoming
mostly cloudy and will hold min temps above normal with lows
generally in the mid upper 50s. Some patchy fog possible across
inland NE fl towards morning but may be too much cloud cover for
anything significant and have left out of forecast for now.

Monday... Shortwave energy aloft will push out of northern gomex
and into SE us around the high pressure ridge across north fl and
this will continue the threat of showers across SE ga while NE fl
remains mostly dry. Skies generally mostly cloudy SE ga and partly
cloudy NE fl and temps continue to moderate with highs into the
upper 70s near 80 for NE fl and lower to middle 70s for SE ga.

Thunderstorm chances still too low (less than 10%) to include in
the forecast for SE ga at this time.

Long term Tuesday-Friday
Tuesday... Next weakening cold front will push through the SE us
and into SE ga NE fl while losing mid upper level support but
likely enough moisture and low level convergence for at least
scattered showers area-wide. Thunderstorm probs still too low and
far out in time to include in forecast yet. Temps still above
normal with highs in the 70s near 80 and lows in the upper
50s near 60.

Wed-fri... The usual model diffs in this period as front washes out
and high pressure builds north of the region. The zonal flow aloft
tries to show a few weak disturbances moving along the old frontal
boundary to keep the slight chance of showers possible each day,
but timing still too far out for any confidence. Overall temps
cool slightly following the front on Wednesday with highs closer
to 70 but will rebound with highs well into the 70s by the end of
the week. Lows cool slightly but some cloud cover will keep them
in the upper 40s 50s for most areas.

Aviation
PrevailingVFR conditions are expected this 18z TAF period. However,
a brief period of MVFR can not be ruled out along with a few
sprinkles this afternoon and evening.

Marine
A cold front will move south of area waters tonight, with high
pressure building from the northwest overnight. The high will build
to the north Saturday, then northeast Saturday night into Sunday.

The high will build to the east into the early part of next week.

Rip currents: low risk.

Preliminary point temps pops
Amg 37 56 38 70 10 0 0 0
ssi 46 56 46 67 10 0 0 0
jax 45 58 45 72 0 0 0 0
sgj 49 58 50 72 0 0 0 0
gnv 46 61 45 75 0 0 0 0
ocf 48 64 47 77 0 0 0 0

Jax watches warnings advisories
Fl... None.

Ga... None.

Am... None.

23 hess mcginnis


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
MYPF1 - 8720218 - Mayport (Bar Pilots Dock), FL 2 mi45 min WNW 8 G 11 66°F 60°F1018.5 hPa (+1.7)
LTJF1 3 mi45 min 67°F 55°F
BLIF1 7 mi45 min WNW 5.1 G 12 67°F 1019.2 hPa (+1.6)56°F
DMSF1 8 mi45 min 59°F
JXUF1 12 mi45 min 61°F
FRDF1 - 8720030 - Fernandina Beach, FL 20 mi45 min WNW 6 G 8 61°F 58°F1019.4 hPa (+2.3)
41112 - Offshore Fernandina Beach, FL (132) 23 mi45 min 63°F2 ft
41117 32 mi53 min 65°F2 ft
SAUF1 - St. Augustine, FL 38 mi45 min W 1.9 G 2.9 68°F 64°F1018.5 hPa (+1.7)
RCYF1 42 mi45 min 61°F
GTXF1 - Guana Tolomato Matanzas Reserve, FL 51 mi60 min SW 1 65°F 1020 hPa58°F

Wind History for Fernandina Beach, FL
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Mayport Naval Station - Adm David L. McDonald Field, FL1 mi53 minW 710.00 miMostly Cloudy66°F55°F70%1017.9 hPa
Jacksonville Craig Municipal Airport, FL8 mi52 minWNW 510.00 miFair67°F55°F66%1018 hPa
Jacksonville International Airport, FL17 mi49 minNW 810.00 miMostly Cloudy65°F48°F54%1018.4 hPa
Jacksonville Naval Air Station, FL18 mi52 minW 510.00 miMostly Cloudy68°F55°F65%1017.9 hPa

Wind History from NRB (wind in knots)
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Last 24hrSW3S6S5SW4SW5SW5SW5SW5SW6CalmW3SW3W4NW3NW3W3W4SW5SW9W8W6W7W5W7
1 day agoSW4SW5S5SW8SW10SW7SW7SW8SW5SW7SW7SW7W5SW5SW7W5W76W7SW7SW9SW9SW3Calm
2 days agoW7W8W11
G16
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G15
NW64NW6NW7NW7N66SW7W6W7W6SW5SW4

Tide / Current Tables for Mayport Naval Station, Degausing Structure, Florida
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Mayport Naval Station
Click for Map
Fri -- 04:46 AM EST     Moonrise
Fri -- 06:16 AM EST     5.33 feet High Tide
Fri -- 07:14 AM EST     Sunrise
Fri -- 12:35 PM EST     0.23 feet Low Tide
Fri -- 03:57 PM EST     Moonset
Fri -- 05:26 PM EST     Sunset
Fri -- 06:33 PM EST     4.61 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
00.51.52.83.94.85.35.24.43.2210.30.30.9233.94.54.542.91.70.7

Tide / Current Tables for St. Johns River Entrance, Florida Current
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St. Johns River Entrance
Click for Map
Fri -- 02:07 AM EST     0.00 knots Slack
Fri -- 04:46 AM EST     Moonrise
Fri -- 05:19 AM EST     2.26 knots Max Flood
Fri -- 07:14 AM EST     Sunrise
Fri -- 08:18 AM EST     -0.00 knots Slack
Fri -- 11:57 AM EST     -2.17 knots Max Ebb
Fri -- 03:02 PM EST     0.00 knots Slack
Fri -- 03:57 PM EST     Moonset
Fri -- 05:26 PM EST     Sunset
Fri -- 05:56 PM EST     1.72 knots Max Flood
Fri -- 08:26 PM EST     -0.00 knots Slack
Fri -- 11:38 PM EST     -2.04 knots Max Ebb
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
-1.9-1.2-0.21.11.92.22.21.60.4-0.9-1.7-2-2.2-1.9-1.2-011.61.71.50.6-0.7-1.7-2

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 (18,4,5,8)
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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.