Friday, March24, 2017 L-36.com


Marine Weather and Tides
Yulee, FL

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 10:11 AM EDT (14:11 UTC) Moonrise 4:07AMMoonset 3:22PM Illumination 10% 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- 901 Am Edt Fri Mar 24 2017
.small craft exercise caution...
Rest of today..East southeast winds 15 to 20 knots. Seas 4 to 6 feet with occasional seas up to 8 feet. Dominant period 8 seconds. Inland waters a moderate chop.
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. 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 and Thunderstorms.
Tuesday..South winds 10 to 15 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Inland waters a light chop. A slight chance of showers and Thunderstorms.
AMZ400 Synopsis For Altamaha Sound Ga To Flagler Beach Fl Out To 60 Nm- 901 Am 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 Yulee, FL
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location: 30.6, -81.52     debug


Area Discussion for - Jacksonville, FL
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Fxus62 kjax 240842
afdjax
area forecast discussion
national weather service jacksonville fl
442 am edt Fri mar 24 2017

Currently
Early morning surface analysis depicts strong high pressure (1037
millibars) centered just east of the DELMARVA peninsula.

Aloft... The axis of ridging centered near the gulf of tehuantepec
extends northeastward across the western and central gulf of
mexico and into the southeastern states. Meanwhile, an intense
shortwave trough was emerging off the front range of the rockies
and was moving slowly eastward over the southern high plains.

Nighttime infrared fog channel imagery indicates that low stratus
is expanding in coverage over the northern suwannee valley and
portions of southern interior georgia. The western edge of an
extensive stratocumulus field over the western atlantic waters is
touching coastal locations, where onshore winds are keeping
temperatures in the 60-65 range early this morning. Winds inland
have mostly decoupled, with temperatures generally in the 50-55
range.

Near term (today and tonight)
Heights aloft will continue to rise locally as the storm system
emerging from the rockies continues a slow eastward movement
through the southern plains states, with ridging centered to the
southwest of our area continuing to build downstream of this
trough. Surface ridging just off the mid-atlantic coast will sink
southeastward and will gradually weaken, but a rather tight local
pressure gradient will prevail today. Breezy east-southeast
surface winds will develop by the mid to late morning hours, with
stratocumulus over the western atlantic advecting into our region
this morning. Coverage of this stratocumlus remains somewhat in
question, as drying in the mid and upper levels associated with
increasing subsidence mixes down to the surface. Partly cloudy
skies will boost highs to near or slightly above late march climo
inland, where highs will top out in the mid to upper 70s. Breezy
onshore winds will keep coastal highs generally in the lower 70s.

Low-level winds will continue to slowly veer tonight, with periods
of stratocumulus expected in the coastal counties. Thin cirrus
will also spill overtop of the ridge aloft and should migrate
across our region from west to east overnight. Winds will again
decouple inland, where lows will fall to the mid 50s.

Southeasterly winds will gradually decrease to around 10 mph
overnight at area beaches as our local pressure gradient continues
to loosen. Lows at the coast will generally be near 60.

Short term (Saturday through Sunday night)
Deep-layered ridging will remain in control of our weather pattern
on Saturday. This ridge will begin to deflect the storm system
moving through the southern plains states northeastward on a
trajectory into the mid-mississippi valley. Our local pressure
gradient will continue to gradually loosen, but breezy
southeasterly winds will continue for one more day at area
beaches. Inland winds will be around 10 mph or less
Saturday night... Weak shortwave will approach the area from the
west with a relatively weak area of moisture and lift moving in
overnight. A very low chance of showers as this feature moves
through the area through early Sun morning. Sfc ridge will still
dominate the region with little sfc reflection of the shortwave.

Lows continue mild and above normal in the upper 50s and lower
60s. Don't see much potential for fog and generally not very
favorable conditions at this time.

Sunday... Weak shortwave energy will move through SE ga and
then lift out during the aftn. Sfc ridge remains over the
region and east-northeast into the atlc. Model blends and mos
guidance (especially gfs) suggesting scattered convection
Sunday aftn over north zones. Some of this does look a bit
overdone due to weak forcing so have tweaked this down a bit but
have isolated to scattered convection Sunday aftn given gfs
continuity. Model soundings show weak instability so only have
isold tstms mentioned. Generally southeast to south winds expected
so another warm day in store with MAX temps pushing into the
lower to possibly mid 80s inland. Closer to upper 70s at the coast
from the onshore flow.

Sunday night... Some lingering very isolated convection possible
Sunday evening over SE ga. Lows continue to dip to upper 50s to near
60 with a low potential for patchy ground fog by early mon
morning.

Long term (Monday-Thursday)...

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
Ifr visibilities and periods of MVFR ceilings are expected through
around 12z at vqq. MVFR visibilities are possible through 13z at
gnv and jax. Otherwise,VFR conditions will prevail at the
regional terminals during the next 24 hours. East southeasterly
surface winds will increase to 10-15 knots at the terminals after
13z. Periods ofVFR ceilings around 4000 feet will be possible,
mainly at the coastal terminals.

Marine
Onshore winds have generally fallen to caution levels over both
the near shore and offshore waters, but elevated seas will keep
the small craft advisory going through noon today near shore, and
through Saturday morning in the offshore waters. Generally
southeasterly winds will fall just below caution speeds in the
near shore waters tonight and Saturday, with offshore wind speeds
falling just below caution levels by Saturday and Saturday night.

Caution level seas of 4-6 feet are expected to persist offshore
through early next week. A weakening cold front will enter the
southeastern states late this weekend, but is not expected to
cross the coastal waters next week.

Rip currents: a long fetch of onshore winds and elevated surf
heights will keep a high risk of rip currents in place at area
beaches today. A moderate risk is expected this weekend as onshore
winds and seas gradually diminish.

Fire weather
Main headline is elevated dispersion values today over 75 in most
areas. Rh values will be above critical levels so no red flags.

Winds today breezy at times from the east to southeast. A small
potential for a few showers or a thunderstorm Sunday mainly north
half of area.

Preliminary point temps/pops
Amg 78 54 80 60 / 0 10 10 10
ssi 71 58 74 61 / 10 10 10 10
jax 74 54 78 59 / 10 10 10 10
sgj 73 60 76 61 / 10 10 10 10
gnv 78 53 81 58 / 10 10 10 10
ocf 79 54 81 59 / 10 10 10 10

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

Ga... High rip current risk through 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.

Small craft advisory until noon edt today 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.

Nelson/shashy


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
FRDF1 - 8720030 - Fernandina Beach, FL 6 mi41 min E 5.1 G 11 68°F 64°F1030.7 hPa
BLIF1 14 mi41 min E 8.9 G 15 69°F 1030.4 hPa55°F
41112 - Offshore Fernandina Beach, FL (132) 14 mi41 min 63°F5 ft
DMSF1 15 mi41 min 65°F
MYPF1 - 8720218 - Mayport (Bar Pilots Dock), FL 15 mi41 min E 8.9 G 12 67°F 64°F1030.1 hPa
NFDF1 15 mi41 min E 12 G 15 68°F 1030.1 hPa
LTJF1 16 mi41 min 69°F 54°F
JXUF1 18 mi41 min 65°F
BKBF1 30 mi41 min ENE 6 G 7 65°F 66°F
SAUF1 - St. Augustine, FL 53 mi71 min E 14 G 15 67°F 65°F1030.1 hPa (+1.3)
SAXG1 - Sapelo Island Reserve, GA 58 mi71 min ENE 6 65°F 1031 hPa (+2.0)58°F

Wind History for Fernandina Beach, FL
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Jacksonville, Jacksonville International Airport, FL12 mi15 minESE 11 G 1910.00 miA Few Clouds69°F52°F55%1029.5 hPa
Mayport, Mayport Naval Station, Adm David L. McDonald Field, FL15 mi19 minE 1110.00 miA Few Clouds69°F54°F59%1029.7 hPa
Jacksonville Craig Municipal Airport, FL19 mi18 minE 10 G 1910.00 miFair70°F51°F51%1029.6 hPa

Wind History from FHB (wind in knots)
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Last 24hrE7E8E9E8E9E7SE6S4S4S4S5S5S4SW5SW7SW7SW5SW7SW7SW4SW6W8W7SW8
1 day agoNE12
G22
NE17
G20
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E8E11E6E6E5E6E6E7E6E5E3E3CalmCalmCalmCalmCalm--E5NE4E7
2 days agoSW11
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W10SW9SW11
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SW6SW4SW7SW8SW9W7W7W5SW7SW8W8W7W8NW7N12
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Tide / Current Tables for Nassauville, Florida
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Nassauville
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Fri -- 01:11 AM EDT     0.47 feet Low Tide
Fri -- 05:06 AM EDT     Moonrise
Fri -- 07:08 AM EDT     4.72 feet High Tide
Fri -- 07:24 AM EDT     Sunrise
Fri -- 01:53 PM EDT     0.36 feet Low Tide
Fri -- 04:21 PM EDT     Moonset
Fri -- 07:25 PM EDT     4.59 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
0.80.50.71.52.63.64.44.74.643.12.11.20.60.40.81.8344.54.543.22.1

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 (10,2,3,4)
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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.