Friday, March24, 2017 L-36.com


Marine Weather and Tides
St. Marys, GA

Version 3.4
What's New / NOTES
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.
3/12/2015 - Added section for Gulf current for users in the GMZ marine zones.
This was requested by a user. If you have requests, please let me know.

Sunrise 7:22AMSunset 7:41PM Friday March 24, 2017 5:57 PM EDT (21:57 UTC) Moonrise 4:07AMMoonset 3:21PM Illumination 8% 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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AMZ450 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- 246 Pm Edt Fri Mar 24 2017
Tonight..Southeast winds 10 to 15 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 7 seconds. Inland waters a moderate chop.
Saturday..Southeast winds 10 to 15 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 8 seconds. Inland waters a moderate chop.
Saturday night..Southeast winds 10 to 15 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 8 seconds. Inland waters a light chop.
Sunday..Southeast winds 5 to 10 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 8 seconds. Inland waters a light chop.
Sunday night..South southeast winds 5 to 10 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Inland waters a light chop.
Monday..Southeast winds 5 to 10 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Inland waters smooth.
Monday night..South winds 5 to 10 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Inland waters a light chop. A slight chance of showers.
Tuesday..South winds 10 to 15 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Inland waters a light chop.
Tuesday night..South winds 10 to 15 knots becoming southwest 5 to 10 knots after midnight. Seas 2 to 4 feet. Inland waters a light chop.
Wednesday..South southwest winds 5 to 10 knots becoming south southeast in the afternoon. Seas 2 to 4 feet. Inland waters a light chop.
AMZ400 Synopsis For Altamaha Sound Ga To Flagler Beach Fl Out To 60 Nm- 246 Pm Edt Fri Mar 24 2017
Synopsis.. Strong high pressure centered just offshore of the mid-atlantic coast will continue moving slowly eastward through this weekend while gradually weakening. Onshore winds will continue through the weekend...with speeds and seas gradually diminishing. A weakening cold front will enter the southeastern states on Sunday.

7 Day Forecast for Marine Location Near St. Marys, GA
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location: 30.72, -81.55     debug


Area Discussion for - Jacksonville, FL
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Fxus62 kjax 241847
afdjax
area forecast discussion
national weather service jacksonville fl
247 pm edt Fri mar 24 2017

Near term/thru Saturday/
A strong area of high pressure will be nearly stationary offshore
of the mid-atlantic coast... .Maintaining an onshore SE flow
over our forecast area. Model guidance shows some clouds over the
coastal waters spreading over land from time to time, but shows no
precip potential... So will leave forecast dry with 10 pct pop over
coastal counties. Low temps tonight are expected to be in the mid 50s
well inland to lwr 60s immediate coast. High temps Saturday will
be in the mid 70s coast... Upr 70s-lwr 80s inland with the warmest
temps over our western counties.

Short term /thru Sunday night/
Upper ridge centered along southeast u.S. Coast gets flattened out
while a cut-off low opens up and moves towards the great lakes.

The tail end of a short wave trough will traverse the area Sunday
bringing a chance of showers and possible storms mainly to the
inland areas of southeast ga and extreme NE fl. Temps will warm into
the lower 80s inland and mid/upper 70s along the coast. Lows in the
50s inland to lower/mid 60s coast.

Long term /Monday-Friday/
Fairly progressive pattern expected with a mid/upper ridging over
the region on Monday which then moves out by early Tuesday as tail
end of shortwave trough pushes through accompanied by an increase in
moisture. Best moisture and lift will be north of the area but at
this time just isold convection fcst both Monday and Tuesday due to
aftn sea breezes and shortwave trough. Generally warm and dry
conditions Wed and Thu as GFS and ECMWF show 500 mb ridge across the
area... Though lingering weak sfc trough may be near our north zones.

Forcing and instability too weak to justify pops at this time during
this latter period. Above normal MAX temps expected each day into
the lower to mid 80s inland... Closer to upper 70s and lower 80s at
the coast. Lows will be in the 50s to near 60... Also above normal by
several degrees.

Aviation Vfr conditions in tafs for the next 24 hrs. Some potential
for occasional CIGS nearing MVFR to affect coastal tafs as cloudiness
over coastal waters spreads inland... But showed this as an occasional
cig bkn030 for now at ksgj and kssi this evening.

Marine Maintaining SCA for offshore component through Sat morning due
to elevated seas with easterly swell. Will let next shift evaluate 00z
data to determine need to extend advisory through the rest of sat.

Se flow to continue over waters the next several days with strong high
pressure remaining offshore of the mid-atlantic coast. Winds will
gradually weaken during the next several days.

Rip currents: high risk today. Moderate risk expected Saturday.

Fire wx... Winds will gradually decrease over the weekend. Breezy
conditions still expected along the coast Saturday afternoon. An
upper disturbance will bring a chance of afternoon showers and
possible storms to the inland areas Sunday. Min rh's are expected to
be above critical levels.

Preliminary point temps/pops
Amg 56 80 59 82 / 10 10 10 30
ssi 60 74 62 75 / 10 10 0 10
jax 57 78 57 81 / 10 10 0 10
sgj 61 76 61 78 / 10 10 10 10
gnv 55 81 58 82 / 10 10 0 20
ocf 56 81 59 82 / 10 10 0 10

Jax watches/warnings/advisories
Fl... High rip current risk until 11 pm edt this evening for coastal
duval-coastal nassau-flagler-st. Johns.

Ga... High rip current risk until 11 pm edt this evening for coastal
camden-coastal glynn.

Am... Small craft advisory until 11 am edt Saturday 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.

Pw/pp/aw


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
FRDF1 - 8720030 - Fernandina Beach, FL 5 mi39 min ENE 5.1 G 11 73°F 65°F1028 hPa
41112 - Offshore Fernandina Beach, FL (132) 14 mi27 min 64°F5 ft
NFDF1 22 mi39 min ESE 12 G 16 71°F 1027.3 hPa
MYPF1 - 8720218 - Mayport (Bar Pilots Dock), FL 23 mi39 min E 8 G 12 69°F 65°F1027.5 hPa
DMSF1 23 mi39 min 66°F
BLIF1 23 mi39 min ESE 13 G 17 71°F 1027.7 hPa58°F
LTJF1 24 mi39 min 70°F 58°F
JXUF1 26 mi39 min 67°F
BKBF1 37 mi39 min E 12 G 16 71°F 67°F
SAXG1 - Sapelo Island Reserve, GA 50 mi57 min E 6 71°F 1028 hPa (-2.0)59°F
41008 - GRAYS REEF - 40 NM Southeast of Savannah, GA 59 mi67 min E 7.8 G 7.8 65°F 63°F5 ft1028.1 hPa (-2.3)59°F

Wind History for Fernandina Beach, FL
(wind in knots)    EDIT      (on/off)   Help
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NE11
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SW4
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G15

Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Fernandina Beach Municipal Airport, FL9 mi82 minE 910.00 miPartly Cloudy73°F57°F57%1027.4 hPa
Jacksonville, Jacksonville International Airport, FL17 mi61 minESE 15 G 2110.00 miPartly Cloudy74°F51°F45%1026.8 hPa
Mayport, Mayport Naval Station, Adm David L. McDonald Field, FL24 mi65 minE 810.00 miMostly Cloudy71°F57°F63%1027.2 hPa

Wind History from JAX (wind in knots)
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Last 24hrNE15NE15NE13NE9NE7NE6NE5N5N5NE3CalmN3N4CalmCalmNE5E11
G19
E16
G21
SE17
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SE16E17SE17E11SE15
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1 day agoE17E18E12E10E10NE6NE5NE9NE9NE8NE9NE12NE13NE11NE11NE12NE9E11NE10E16NE9NE17
G23
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G25
2 days agoSW9SW11SW8SW13SW11SW8SW9SW9SW7W8SW9W6W5W6SW7W7W15W12NW12W7NW12N9N14
G18
E18
G26

Tide / Current Tables for St. Marys, St. Marys River, Florida
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St. Marys
Click for Map
Fri -- 12:47 AM EDT     0.62 feet Low Tide
Fri -- 05:07 AM EDT     Moonrise
Fri -- 07:22 AM EDT     6.05 feet High Tide
Fri -- 07:24 AM EDT     Sunrise
Fri -- 01:27 PM EDT     0.47 feet Low Tide
Fri -- 04:21 PM EDT     Moonset
Fri -- 07:38 PM EDT     5.86 feet High Tide
Fri -- 07:40 PM EDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.80.61.22.23.44.65.565.95.23.92.51.30.60.61.42.63.955.75.85.242.6

Tide / Current Tables for St. Johns River Entrance, Florida Current
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St. Johns River Entrance
Click for Map
Fri -- 02:12 AM EDT     0.00 knots Slack
Fri -- 04:50 AM EDT     1.92 knots Max Flood
Fri -- 05:05 AM EDT     Moonrise
Fri -- 07:24 AM EDT     Sunrise
Fri -- 08:17 AM EDT     -0.00 knots Slack
Fri -- 10:53 AM EDT     -1.87 knots Max Ebb
Fri -- 02:56 PM EDT     0.00 knots Slack
Fri -- 04:21 PM EDT     Moonset
Fri -- 05:22 PM EDT     1.71 knots Max Flood
Fri -- 07:39 PM EDT     Sunset
Fri -- 08:34 PM EDT     -0.00 knots Slack
Fri -- 11:08 PM EDT     -1.97 knots Max Ebb
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
-1.5-1-0.20.81.71.91.61.10.3-0.8-1.7-1.9-1.7-1.4-0.80.11.11.71.61.20.5-0.5-1.5-2

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 (17,4,5,8)
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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.