Monday, October23, 2017 L-36.com


Marine Weather and Tides
Douglas, GA

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 7:42AMSunset 6:53PM Monday October 23, 2017 7:30 AM EDT (11:30 UTC) Moonrise 10:00AMMoonset 8:46PM Illumination 11% Phase: Waxing Crescent; Moon at 3 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- 300 Am Edt Mon Oct 23 2017
.small craft exercise caution...
Today..South winds 15 to 20 knots. Seas 4 to 6 feet with occasional seas up to 8 feet. Dominant period 7 seconds. Inland waters choppy. Showers and a chance of Thunderstorms.
Tonight..Southwest winds 15 to 20 knots becoming west 10 to 15 knots in the morning. Seas 4 to 6 feet with occasional seas up to 8 feet. Dominant period 7 seconds. Inland waters a moderate chop. Showers likely and a chance of Thunderstorms.
Tuesday..Northwest winds 10 to 15 knots. Seas 2 to 4 feet. Dominant period 7 seconds. Inland waters a light chop. A chance of showers and a slight chance of Thunderstorms.
Tuesday night..North northwest winds 15 to 20 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 6 seconds. Inland waters a moderate chop. A slight chance of showers.
Wednesday..North northwest winds 15 to 20 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Inland waters a moderate chop.
Wednesday night..North northwest winds 10 to 15 knots. Seas 2 to 4 feet. Inland waters a moderate chop.
Thursday..North winds 10 to 15 knots. Seas 2 to 4 feet. Inland waters a light chop.
Thursday night..Northeast winds 5 to 10 knots. Seas 2 to 3 feet. Inland waters a light chop.
Friday..Northeast winds around 10 knots. Seas 2 to 3 feet. Inland waters a light chop.
AMZ400 Synopsis For Altamaha Sound Ga To Flagler Beach Fl Out To 60 Nm- 300 Am Edt Mon Oct 23 2017
Synopsis.. A strong cold front will sweep across the region from the west tonight. A strong line of storms will be possible as this front moves across the area. High pressure will build over the region the remainder of the week.

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 230737
afdjax
area forecast discussion
national weather service jacksonville fl
337 am edt Mon oct 23 2017

Cold frontal passage to bring widespread showers and embedded
strong to possibly severe storms today into early tonight...

Near term today-tonight
Today... Forecast remains on track with strong cold front to track
across the deep south north gulf coast towards NE fl SE ga today
with widespread showers and embedded strong storms breaking out in
pre-frontal activity across inland SE ga and the suwannee river
valley this morning and slowly spreading across the remainder of
the region this afternoon and evening. Strongest lift dynamics
will pass just NE of the region and best chance of isolated severe
storms this afternoon evening across SE ga near the atlamaha river
basin with damaging winds the main threat as they track quickly
off towards the ne. Otherwise embedded strong storms will be
possible area-wide with gusty winds. Widespread rainfall amounts
of 0.50-1.00" inches are expected with locally higher amounts near
2 inches possible. With a warm start in the 70s this morning won't
be too tough to reach the lower 80s today in the warm and breezy
southerly flow ahead of the front around 15-20g25 mph.

Tonight... Pre-frontal shower storm activity will push NE of the
region and into the atlc this evening but still enough moisture,
lift and energy along with the actual cold frontal passage tonight
from the NW to SE across the region to trigger scattered to
numerous showers and a few embedded storms. Temps will remain
steady ahead of the front then fall more sharply following the
frontal passage with some mid upper 50s possible across inland se
ga and the suwannee river valley by sunrise while the rest of the
area falls into the 60s.

Short term Tuesday through Wednesday night
The strong cold front will be passing through coastal northeast and
north central florida at sunrise on Tuesday, with scattered showers
possible through mid-morning for location south and east of a line
from st. Augustine to palatka to ocala. Clearing skies from
northwest to southeast are expected during the morning and early
afternoon hours, with a much drier air mass plunging into our region
in the wake of the front. However, significant cold air advection
will lag this front somewhat, with highs generally reaching the mid
to upper 70s, except lower 80s for north central florida. These
values are close to late october climo. Troughing aloft will
continue to dig into the southeastern states from Tuesday night
through Wednesday night, with cold air advection gradually
strengthening as surface ridging gradually builds southeastward from
texas into the western gulf of mexico. Lows Tuesday night will fall
to the mid upper 40s inland, with a light northwesterly breeze
making it feel even a few degrees cooler by Wednesday morning. North-
northwesterly winds will remain around 10 mph for locations east of
i-95, keeping lows generally in the mid 50s. Despite full sunshine
and a very dry air mass, highs on Wednesday will run about 5-8
degrees below climo, with highs generally around 70 area-wide.

Surface ridging will expand into our area from the northern gulf
coast after midnight on Wednesday night, with radiational cooling
conditions expected by the predawn hours away for locations west of
interstate 95. Lows will fall to the lower 40s inland, ranging to
around 50 at area beaches. These will be the coolest temperatures
experienced in our region since april 8-9.

Long term Thursday through Sunday
Heights aloft will begin to rise on Thursday as a potent trough digs
southeastward from the canadian prairies into the upper midwest.

Surface ridging will be located over our region during the morning
hours, but will quickly slide northeastward to a position near the
north carolina outer banks by sunset. A very dry air mass, full
sunshine and light winds will allow highs to quickly rebound into
the lower 70s inland and around 70 at the coast. We expect
radiational cooling to occur during the evening hours on Thursday,
with some potential for low stratus ceilings and or fog to develop
over portions of northeast and north central florida during the
predawn hours on Friday as low level flow becomes onshore. Lows will
likely occur right around midnight, with mid to upper 40s inland and
mid 50s at the coast, with steady or slowly rising temperatures
during the predawn hours as warm air advection begins to take shape.

Flow aloft locally will become southwesterly on Friday, with low
level onshore flow bringing an increasing cumulus stratocumulus
field inland from the atlantic waters. However, the overall dry air
mass will be slow to erode locally, with highs rebounding to near or
slightly above climo by Friday afternoon, with mid to upper 70s
forecast area-wide.

Long-term models develop low pressure over the northwestern
caribbean sea by Friday night as deep troughing digs into the lower
mississippi valley. A cold front will push into the southeastern
states by sunrise on Saturday, with a few predawn showers possible
over the western suwannee valley and southeast georgia. Increasing
multi-layered cloudiness will keep lows in the 55-60 range inland
and mid 60s at area beaches. The fast approaching cold front will
likely keep any deeper tropical moisture confined to locations south
of CAPE canaveral on Saturday, with isolated to widely scattered
showers possible ahead of the front, especially by Saturday
afternoon. Highs will range from the mid 70s near the altamaha river
to near 80 in north central florida. Widely scattered showers will
likely accompany the front as it passes through our region from
northwest to southeast from Saturday evening through Sunday morning.

Lows Saturday night will likely fall back into the mid 50s over
inland southeast georgia and the western suwannee valley as the
front moves east of these areas after midnight, with upper 50s to
lower 60s elsewhere. Northwesterly surface winds may become gusty in
the wake of the front by late Sunday as low pressure accelerates
northward well offshore from our coastal waters and cool surface
ridging builds into our region from the west. Clearing skies are
forecast during the afternoon hours from west to east, with highs
falling back to the 70-75 range, with cool air advection
strengthening by Sunday evening and sending inland lows back into
the 40s by Sunday night.

Aviation
Very moist low level airmass ahead of pre-frontal trough early
this morning but just enough SE wind at the surface to prevent any
significant fog formation and mainly justVFR conds ahead of pre-
frontal shower storm activity that will begin to impact the taf
sites during the late morning early afternoon hours between 15-18z
and linger until around sunset with widespread MVFR CIGS vsbys.

Too early to add any significant convective wind gusts but will be
possible during the afternoon hours.

Marine
Will raise SCA for the offshore waters as southerly flow ahead of
the front will push to around 20 knots with seas to 7 ft today and
tonight with scec conds in the nearshore waters. Winds become nw
behind the front on Tue then increase back to 15-20 knots tue
night and Wednesday but still remain just below SCA levels at this
time. Subsiding winds seas expected for the end of the week as
high pressure builds over the region.

Rip currents: moderate risk as flow becomes southerly today then
likely low risk with offshore flow on Tuesday.

Hydrology
Tidal flooding in the st johns river basin continues to subside as
the flow becomes more southerly today and will cancel flood
advisory for all areas except leave an advisory in place in
putnam county portion of the st johns for likely one more day of
minor tidal flooding at high tide.

Preliminary point temps pops
Amg 79 55 76 45 80 30 0 0
ssi 80 64 78 54 80 60 10 10
jax 82 63 79 51 70 50 10 0
sgj 83 68 79 56 70 50 30 10
gnv 82 63 79 48 80 50 10 0
ocf 82 65 81 50 80 50 10 0

Jax watches warnings advisories
Fl... Coastal flood advisory until 6 am edt Tuesday for putnam.

Ga... None.

Am... Small craft advisory until 6 am edt Tuesday 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.

Hess nelson


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
FRDF1 - 8720030 - Fernandina Beach, FL 93 mi42 min SE 5.1 G 9.9 78°F 77°F1018.1 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 mi55 minSSE 67.00 miMostly Cloudy72°F71°F100%1016.6 hPa
Alma, Bacon County Airport, GA17 mi37 minSSE 107.00 miMostly Cloudy76°F72°F88%1015.9 hPa

Wind History from DQH (wind in knots)
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1 day agoE5E5E8E6E9E8E5E7E7
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2 days agoNE3NE6NE6NE6E8NE7E4E7E6E6E3E3E4CalmE4CalmE3E3E3NE3E4E6NE6NE5

Tide / Current Tables for Burnt Fort, Satilla River, Georgia
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Burnt Fort
Click for Map
Mon -- 03:19 AM EDT     2.94 feet High Tide
Mon -- 07:36 AM EDT     Sunrise
Mon -- 10:15 AM EDT     -0.06 feet Low Tide
Mon -- 10:54 AM EDT     Moonrise
Mon -- 03:48 PM EDT     3.19 feet High Tide
Mon -- 06:47 PM EDT     Sunset
Mon -- 09:43 PM EDT     Moonset
Mon -- 10:58 PM EDT     0.10 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.81.72.52.92.92.521.30.70.2-00.10.81.72.533.232.61.91.30.70.30.1

Tide / Current Tables for Below Spring Bluff, Little Satilla River, Georgia
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Below Spring Bluff
Click for Map
Mon -- 12:33 AM EDT     6.81 feet High Tide
Mon -- 06:41 AM EDT     -0.13 feet Low Tide
Mon -- 07:35 AM EDT     Sunrise
Mon -- 10:53 AM EDT     Moonrise
Mon -- 01:02 PM EDT     7.41 feet High Tide
Mon -- 06:45 PM EDT     Sunset
Mon -- 07:24 PM EDT     0.23 feet Low Tide
Mon -- 09:41 PM EDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
6.76.764.52.71.10.1-0.10.92.54.25.877.47.15.94.32.51.10.30.51.63.14.6

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 (7,2,3,4)
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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.