Thursday, January24, 2019 L-36.com


Marine Weather and Tides
Skidaway Island, GA

Version 3.4
What's New / NOTES
10/6/2018 Colors of tide XTide graphs changed to emphasize that they were upgraded. See next note. Comments welcome.
10/4/2018 I have fixed XTide and updated the harmonic files. There were some name changes so you might have to click EDIT to find the new station name.

Sunrise 7:20AMSunset 5:51PM Thursday January 24, 2019 6:34 AM EST (11:34 UTC) Moonrise 10:02PMMoonset 10:05AM Illumination 87% Phase: Waning Gibbous; Moon at 18 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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AMZ354 Waters From Savannah Ga To Altamaha Sound Ga Out 20 Nm, Including Grays Reef National Marine Sanctuary- 313 Am Est Thu Jan 24 2019
.small craft advisory in effect through this afternoon...
Today..SW winds 20 to 25 kt with gusts to 30 kt, becoming W 15 to 20 kt with gusts to 25 kt late this morning. Seas 6 to 8 ft, subsiding to 4 to 6 ft this afternoon. Showers with a slight chance of tstms this morning.
Tonight..NW winds 15 to 20 kt. Seas 4 to 5 ft, subsiding to 3 to 4 ft after midnight.
Fri..NW winds 15 to 20 kt, diminishing to 10 to 15 kt in the afternoon. Seas 3 to 4 ft, subsiding to 2 to 3 ft in the afternoon.
Fri night..NW winds 10 kt. Seas 2 ft.
Sat..NW winds 5 to 10 kt. Seas 2 ft.
Sat night..NW winds 5 to 10 kt. Seas 2 ft.
Sun..NW winds 5 to 10 kt. Seas 2 ft.
Sun night..NW winds 5 to 10 kt. Seas 2 ft.
Mon..NE winds 5 to 10 kt. Seas 2 ft.
Mon night..N winds 5 kt. Seas 2 ft. Mariners are reminded that winds and seas higher in and near tstms.
AMZ300 313 Am Est Thu Jan 24 2019
Synopsis for the coastal waters of south coastal south carolina and north coastal georgia.. A strong cold front will move offshore this morning. High pressure will then prevail through early next week. Another cold front will move through Tuesday, followed by high pressure.


7 Day Forecast for Marine Location Near Skidaway Island, GA
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location: 31.91, -81.06     debug


Area Discussion for - Charleston, SC
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Fxus62 kchs 240900
afdchs
area forecast discussion
national weather service charleston sc
400 am est Thu jan 24 2019

Synopsis
A strong cold front will move offshore this morning. High
pressure will then prevail through early next week. Another
cold front will move through Tuesday, followed by high
pressure.

Near term through tonight
Pre-dawn: a strong cold front into western ga this morning with
widespread soaking rains across the forecast area, just reaching
the central coast of sc. Strong upper forcing and deep moisture
in place ahead of a potent mid level short wave lifting northeast
from the florida panhandle and southern alabama. The rains may
result in ponding water on roads and low lying areas for a brief
period early this morning. Temps were quite mild and winds were
gusty across the entire area. A few gusts in the 40 mph range
possible around the elevated spots in coastal areas but the
scope of these wind gusts appear to be a bit too limited for any
wind advisories. There could be a few convective elements
producing some lightning strikes but again the potential looks
to be generally short- lived.

Today: the surface cold front is forecast to race offshore
after mid morning. Rains will end quickly from west to east
over the region between 12z-16z. Strong southwest winds in
the 25-35 mph range just ahead of the front along coastal areas
at 12z, will veer to west by later this morning in the wake
of the front. Speeds will remain elevated but tend to come
down from the peak gusts that occur around daybreak. Cold
air advection will battle an increasing downslope component
resulting in steady afternoon temps in the upper 50s over
inland ga zones to the lower mid 60s toward the coast. It
is likely that most locales realize their daily MAX temp prior
to mid morning today, despite the increasing afternoon sunshine.

Tonight: a secondary surge of cold air advection this evening
will result in temps falling into the 30s overnight. Light
northwest winds will persist as high pressure builds from the
west.

Lake winds: cold lake waters keeping conditions largely below
15 kt ahead of the cold front, but gusty conditions were
occurring around portions of the lake shores. This will change
after mid morning as cold air advection initiates with the
passage of the cold front and improving mixing conditions take
place and winds increase across the open lake waters.

Short term Friday through Sunday
Dry high pressure will prevail Friday through Sunday. Mostly
clear skies are anticipated Friday through Saturday night, then
some increasing cloudiness expected Sunday as an upper shortwave
moves through. Highs will be in the low to mid 50s with lows in
the upper 20s to lower 30s.

Long term Sunday night through Wednesday
Dry weather and moderating temperatures expected Sunday night
through Tuesday as high pressure gradually shifts east. A cold
front is forecast to move through late Tuesday or Tuesday night,
potentially accompanied by scattered showers. There is considerable
model uncertainty regarding how cold the airmass will be
following the front.

Aviation 08z Thursday through Monday
Conditions in MVFR ifr ranges as a large band of rain moves
ahead of a cold front approaching from the west. Gusty winds
will persist and may could as high as 35 kt at kchs. The cold
front will clear the terminals after daybreak withVFR
conditions returning by mid-late morning. West winds will be
gusty at times all day, decreasing around sunset.

Extended aviation outlook:VFR conditions will prevail.

Marine
A very strong low-level jet struggling to mix over the cool and
relatively stable shelf waters this morning with gales ongoing
over warmer waters beyond 20 nm off the sc ga coasts. We held
onto the gale warning along charleston county with respect to
gusts that were occurring near the land sea interface prior to
the cold front. We lowered the gale warning to the south of
edisto across beaufort waters and issued a SCA through the day
into this evening when seas are forecast to subside. Winds will
veer to west in the wake of the front today and this will allow
seas to diminish near shore, although choppy seas are still
likely with better mixing of the jetting flow.

Tonight: winds will remain elevated as cold air advection in
the low levels strengthen. Speeds will mainly be below sca
levels however and seas out near the gulf stream will tend to
subside, albeit slow.

A relatively quiet marine pattern is in store for Friday through
early next week as high pressure remains the dominant feature.

The next wind surge is expected Tuesday night into Wednesday
following the next cold front.

Chs watches warnings advisories
Ga... None.

Sc... Lake wind advisory until 4 pm est this afternoon for scz045.

Marine... Small craft advisory until 9 pm est this evening for amz330-
352.

Gale warning until 10 am est this morning for amz350-374.

Small craft advisory until 4 pm est this afternoon for amz354.

Near term...

short term... Jrl
long term... Jrl
aviation... Jrl
marine... Jrl


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
FPKG1 - 8670870 - Fort Pulaski, GA 12 mi41 min S 11 G 21 63°F 52°F1007 hPa
SAXG1 - Sapelo Island Reserve, GA 36 mi95 min SW 19 63°F 1008 hPa (-3.0)63°F
41008 - GRAYS REEF - 40 NM Southeast of Savannah, GA 37 mi45 min SSW 21 G 25 62°F 57°F7 ft1008.2 hPa (-2.2)61°F
41033 43 mi87 min SSW 18 G 29 61°F 55°F1007.7 hPa

Wind History for Fort Pulaski, GA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Hunter U. S. Army Airfield, GA10 mi39 minS 14 G 209.00 miLight Rain65°F61°F91%1004.7 hPa
Savannah-Hilton Head International Airport, GA18 mi42 minS 17 G 257.00 miRain65°F64°F97%1004.9 hPa

Wind History from SVN (wind in knots)
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Last 24hrCalmCalmE3CalmSE10
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2 days agoNW8NW7N7NE7N8N9NW7NE6N6N7E6E5NE5NE4NE4NE6NE5NE5NE7NE7NE6NE6NE7NE8

Tide / Current Tables for Vernon View, Burnside River, Georgia
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Vernon View
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Thu -- 04:55 AM EST     -1.62 feet Low Tide
Thu -- 07:22 AM EST     Sunrise
Thu -- 10:05 AM EST     Moonset
Thu -- 11:10 AM EST     8.88 feet High Tide
Thu -- 05:24 PM EST     -1.29 feet Low Tide
Thu -- 05:50 PM EST     Sunset
Thu -- 10:02 PM EST     Moonrise
Thu -- 11:45 PM EST     8.00 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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7.45.83.61.1-0.9-1.6-0.71.446.48.18.98.57.152.50.2-1.2-10.42.54.86.67.7

Tide / Current Tables for Savannah River Entrance, Georgia Current (2) (expired 1999-12-31)
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Savannah River Entrance
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Thu -- 02:33 AM EST     -3.05 knots Max Ebb
Thu -- 05:49 AM EST     0.00 knots Slack
Thu -- 07:21 AM EST     Sunrise
Thu -- 08:21 AM EST     2.28 knots Max Flood
Thu -- 10:04 AM EST     Moonset
Thu -- 11:30 AM EST     -0.00 knots Slack
Thu -- 03:02 PM EST     -3.26 knots Max Ebb
Thu -- 05:49 PM EST     Sunset
Thu -- 06:27 PM EST     0.00 knots Slack
Thu -- 08:52 PM EST     2.07 knots Max Flood
Thu -- 10:01 PM EST     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-1-2.2-2.9-3-2.3-1.10.31.52.22.11.50.5-0.6-1.8-2.8-3.3-2.9-2-0.70.71.82.11.70.9

Weather Map and Satellite Images
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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.
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Wind Forecast for Charleston, SC (6,6,7,8)
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Ground Weather Radar Station Charleston, SC
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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.