Thursday, July19, 2018 L-36.com


Marine Weather and Tides
Douglas, GA

Version 3.4
What's New / NOTES
5/20/2018 -- NOAA is having problems with the data feed that I use to draw the graphs. They are aware of the issue and working to resolve it. Sometimes changing the location by about a mile will give a correct graph. 3/3/2018 - There is a new GOES Satellite for the east coast that required rewriting that part of the code. Please report any issues.

Sunrise 6:41AMSunset 8:39PM Thursday July 19, 2018 1:59 AM EDT (05:59 UTC) Moonrise 12:38PMMoonset 12:00AM Illumination 37% Phase: Waxing Crescent; Moon at 6 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- 1017 Pm Edt Wed Jul 18 2018
Rest of tonight..Southwest winds 10 to 15 knots. Seas 2 to 4 feet. Dominant period 9 seconds. Inland waters a light chop. A slight chance of showers and Thunderstorms late.
Thursday..South winds 10 to 15 knots. Seas 2 to 3 feet. Dominant period 9 seconds. Inland waters a light chop. Showers and Thunderstorms likely.
Thursday night..South southwest winds 10 to 15 knots. Seas 2 to 3 feet. Dominant period 9 seconds. Inland waters a light chop. A chance of showers and Thunderstorms in the evening, then showers and Thunderstorms likely after midnight.
Friday through Saturday..Southwest winds 10 to 15 knots. Seas 2 to 3 feet. Dominant period 8 seconds. Inland waters a light chop. Showers and Thunderstorms likely.
Saturday night..Southwest winds 15 knots. Seas 2 to 3 feet. Inland waters a moderate chop. A chance of showers and Thunderstorms.
Sunday..Southwest winds 10 to 15 knots. Seas 2 to 3 feet. Inland waters a moderate chop. A chance of showers and Thunderstorms.
Sunday night..Southwest winds 15 knots. Seas 2 to 4 feet. Inland waters a moderate chop. Showers and Thunderstorms likely.
Monday..South winds 10 to 15 knots. Seas 2 to 4 feet. Inland waters a light chop. Showers and Thunderstorms likely.
AMZ400 Synopsis For Altamaha Sound Ga To Flagler Beach Fl Out To 60 Nm- 1017 Pm Edt Wed Jul 18 2018
Synopsis.. Offshore winds will prevail through the weekend as waves of low pressure develop and move eastward along a stalled frontal boundary that will extend across the georgia waters. Numerous showers and Thunderstorms will impact the coastal waters from Thursday afternoon through the weekend. Atlantic high pressure will then gradually build westward towards the florida peninsula early next week, pushing low pressure westward towards the lower mississippi valley.

7 Day Forecast for Marine Location Near Douglas, GA
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location: 31.54, -82.82     debug


Area Discussion for - Jacksonville, FL
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Fxus62 kjax 190254
afdjax
area forecast discussion
national weather service jacksonville fl
1054 pm edt Wed jul 18 2018

Wet pattern continues into the upcoming weekend...

Update
Late evening surface analysis depicts a few weak low pressure
waves (1011 millibars) developing along a decelerating frontal
boundary that extends from the lower mississippi river valley
eastward across central georgia and coastal south carolina. This
front has pushed the axis of atlantic ridging southward to a
position over the florida straits. Meanwhile, high pressure (1024
millibars) was building southeastward from the great lakes states
in the wake of the aforementioned front. Aloft... Deep troughing
remains in place across the ohio valley, mid-atlantic states and
new england, while the next upstream potent shortwave trough digs
from the dakotas into the upper midwest. This weather pattern is
creating northwesterly flow aloft over our region, with a more
subtle shortwave trough migrating through the lower mississippi
valley. Outflow boundaries from convection originating along the
aforementioned frontal boundary over central georgia have crossed
the altamaha ocmulgee rivers, with slow moving convection from
baxley northward. Thick cirrostratus debris clouds cover southeast
georgia, while mid and high altitude cloudiness is thinning over
northeast and north central florida. South-southwest winds around
10 mph are keeping coastal temperatures in the lower 80s as of
02z, while inland temperatures and dewpoints are mostly in the mid
to upper 70s.

Latest short-term, high resolution guidance is indicating that
convection will once again develop over the northeast gulf waters
overnight. This activity will spread inland and should increase in
coverage moreso than the past few mornings as a wave of low
pressure along the slow moving frontal boundary deepens slowly and
sinks southward by Thursday morning. Numerous showers and
embedded thunderstorms should be ongoing over the southern and
western portions of the suwannee valley and western marion county
by sunrise on Thursday. Convection is also expected to develop
over inland southeast georgia before the noon hour, while
widespread convection moves east-northeastward around 15 mph
across northeast and north central florida, with activity reaching
coastal locations in southeast georgia and northeast florida by
early afternoon. An early start to convection and more cloudiness
throughout the day will keep highs in the upper 80s to around 90
region-wide. Meanwhile, the subtle moving through the lower
mississippi valley overnight will sharpen as it reaches the
florida panhandle by sunset. This feature will deepen the
southwesterly flow in place locally even further, advecting pwats
of 2.2-2.4 inches into our region by late in the day. Additional
rounds of convection appear likely to develop over the northeast
gulf of mexico and inland southeast georgia during the evening
hours on Thursday, with activity spreading northeastward
overnight.

Aviation
Vfr conditions will prevail at the regional terminals through at
least 10z. Brief periods of MVFR visibilities will be possible at
vqq after 07z through around 11z. Showers and thunderstorms will
develop over the northeast gulf waters overnight and will push
eastward across the suwannee valley, north central florida and
inland portions of southeast georgia during the predawn and early
morning hours. Sub-vfr impacts are possible at gnv during the
11z-15z time frame, with activity likely reaching the northeast
florida terminals during the 13z-18z window. Thunderstorms may
not develop near coastal southeast georgia until around noon,
with activity potentially impacting ssi through the late
afternoon hours. Due to uncertainties in timing and intensity, we
included prob30 groups at each terminal during the time of
expected impact, highlighting the potential for gusty winds and
sub-vfr ceilings and visibilities. Activity may redevelop over our
region during the evening hours on Thursday.

Marine
Several low pressure centers will develop and move eastward along
a slow moving frontal boundary that will sag southward over the
georgia waters by Thursday night. This weather pattern create
offshore winds and increasing thunderstorm activity as the
boundary remains in place through late Saturday. Outside of
thunderstorm activity, evening wind surges will bring speeds up to
around 15 knots over the offshore waters during the next few
evenings, with offshore seas of 2 to 5 feet expected through
early next week. A sustained period of 15-20 knot speeds appears
most likely during the evening wind surges over the offshore
waters during the weekend as our local pressure gradient tightens
somewhat due to atlantic high pressure pressing westward towards
the florida peninsula. This high pressure center will push low
pressure to the west of our region by early next week, resulting
in a prevailing southerly wind direction.

Rip currents: prevailing offshore winds and a minimal
southeasterly ocean swell will keep the rip current risk low
through the weekend at area beaches.

Preliminary point temps pops
Amg 75 88 74 89 60 60 60 70
ssi 78 87 77 87 20 60 60 70
jax 76 89 75 89 20 70 50 70
sgj 77 88 76 87 20 70 50 70
gnv 75 88 75 89 40 60 60 70
ocf 75 87 75 87 40 60 60 70

Jax watches warnings advisories
Fl... None.

Ga... None.

Am... None.

Nelson zibura cordero


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
SAXG1 - Sapelo Island Reserve, GA 81 mi59 min SSW 6 80°F 1014 hPa (+1.0)76°F
FRDF1 - 8720030 - Fernandina Beach, FL 93 mi41 min S 2.9 G 6 82°F 87°F1015.2 hPa

Wind History for Fernandina Beach, FL
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Douglas, Douglas Municipal Airport, GA5 mi84 minN 010.00 miPartly Cloudy79°F73°F84%1014.2 hPa
Alma, Bacon County Airport, GA17 mi66 minN 09.00 miFair77°F73°F90%1013.4 hPa

Wind History from DQH (wind in knots)
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Last 24hrSW3SW4W4SW4SW4SW4SW6W6W5SW7W7SW6SW6SW5SW8W4SW8
G14
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1 day agoCalmCalmCalmCalmCalmCalmCalmW4W5SW5SW7W6W5SW6SW7S10
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2 days agoCalmCalmCalmCalmCalmCalmSW3SW3SW5S6W6CalmSW4NW4CalmW5S3SW5SW4CalmCalmCalmCalmCalm

Tide / Current Tables for Burnt Fort, Satilla River, Georgia
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Burnt Fort
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Thu -- 12:50 AM EDT     Moonset
Thu -- 01:18 AM EDT     0.31 feet Low Tide
Thu -- 06:28 AM EDT     3.64 feet High Tide
Thu -- 06:36 AM EDT     Sunrise
Thu -- 01:34 PM EDT     Moonrise
Thu -- 01:42 PM EDT     0.14 feet Low Tide
Thu -- 03:53 PM EDT     First Quarter
Thu -- 07:10 PM EDT     3.64 feet High Tide
Thu -- 08:30 PM EDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.60.30.51.12.133.63.63.32.721.20.60.20.20.61.52.53.33.63.53.22.61.9

Tide / Current Tables for Below Spring Bluff, Little Satilla River, Georgia
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Below Spring Bluff
Click for Map
Thu -- 12:48 AM EDT     Moonset
Thu -- 03:42 AM EDT     8.45 feet High Tide
Thu -- 06:35 AM EDT     Sunrise
Thu -- 10:08 AM EDT     0.33 feet Low Tide
Thu -- 01:33 PM EDT     Moonrise
Thu -- 03:53 PM EDT     First Quarter
Thu -- 04:24 PM EDT     8.46 feet High Tide
Thu -- 08:29 PM EDT     Sunset
Thu -- 10:46 PM EDT     1.02 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
3.25.178.28.47.76.14.22.410.30.82.13.95.97.58.48.37.45.84.12.51.31.1

Weather Map and Satellite Images
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wmap_A
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.
target = "new">Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Jacksonville, FL (1,6,7,8)
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Ground Weather Radar Station Moody AFB, GA
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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.