Monday, November20, 2017 L-36.com


Marine Weather and Tides
Henderson, 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 6:58AMSunset 5:23PM Monday November 20, 2017 12:23 PM EST (17:23 UTC) Moonrise 8:39AMMoonset 7:18PM Illumination 4% Phase: Waxing Crescent; Moon at 2 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- 918 Am Est Mon Nov 20 2017
Today..NE winds 15 to 20 kt. Seas 3 to 4 ft.
Tonight..E winds 10 to 15 kt. Seas 3 ft.
Tue..SE winds 5 to 10 kt. Seas 3 ft. A chance of showers in the morning, then showers likely in the afternoon.
Tue night..N winds 5 to 10 kt. Seas 3 to 4 ft. A chance of showers.
Wed..N winds 10 to 15 kt. Seas 3 to 4 ft. A slight chance of showers.
Wed night..NE winds 10 to 15 kt. Seas 3 to 4 ft. A chance of showers.
Thu..NE winds 15 to 20 kt. Seas 4 to 6 ft. A chance of showers.
Thu night..N winds 10 to 15 kt. Seas 4 to 6 ft. A chance of showers.
Fri..N winds 10 to 15 kt. Seas 3 to 4 ft. A slight chance of showers.
Fri night..N winds 10 kt. Seas 3 to 4 ft.
AMZ300 918 Am Est Mon Nov 20 2017
Synopsis for the coastal waters of south coastal south carolina and north coastal georgia.. High pressure will prevail into Tuesday. Low pressure will pass off the southeast coast Tuesday and Tuesday night, followed by additional low pressure systems Thursday into Friday. A cold front will shift through the area Saturday night or Sunday.

7 Day Forecast for Marine Location Near Henderson, GA
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location: 32.03, -81.22     debug


Area Discussion for - Charleston, SC
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Fxus62 kchs 201422
afdchs
area forecast discussion
national weather service charleston sc
922 am est Mon nov 20 2017

Synopsis
High pressure will prevail into Tuesday. Low pressure will pass
off the southeast coast Tuesday and Tuesday night, followed by
additional low pressure systems Thursday into Friday. A cold
front will shift through the area Saturday night or Sunday.

Near term through tonight
Monday morning: discontinued frost advisory. Remainder of
forecast remains on track and required few adjustments.

Today: westerly flow aloft this morning will gradually back to
more southwesterly as a mid upper level trough digs across texas
and the northwest gulf of mexico coast. At the surface, high
pressure positioned to the north will slip eastward and become
aligned along the coast of the carolinas. Today will be very
quiet with clear skies prevailing into the afternoon before
scattered high clouds begin to stream in from the southwest in
response to the developing trough aloft. The position of the
surface high will help drive a cool northeast flow for most of
the day, and temperatures are expected to range 6-8 degrees
below normal. Forecast highs are in the low 60s in most areas
with some mid 60s possible in southeast georgia.

Tonight: the center of the surface high will move offshore,
though it will continue to extend into georgia and the carolinas
through the overnight. High clouds will steadily increase as
will stratocumulus in response to subtle isentropic ascent. A
coastal trough will begin to take shape just offshore late in
the overnight, and there could be enough convergence to squeeze
out a light shower over the coastal waters. However, the model
consensus favors a dry forecast through sunrise Tuesday. With
increased cloud cover expected, radiational cooling conditions
will not be as favorable and forecast lows mainly range from the
low 40s inland to the upper 40s low 50s at the coast.

Short term Tuesday through Thursday
The surface high will gradually retreat to the east on Tuesday
while a longwave upper trough deepens over the eastern half of
the country. A weak surface low is expected to develop over
northern fl and shift up the coast late Tuesday into Tuesday
night. Light showers are expected to develop across coastal
southeast ga by Tuesday afternoon, spreading into southern sc
late in the afternoon or during the evening. The rain should
then taper off from southwest to northeast late Tuesday night or
Wednesday morning as surface high pressure builds from the
west.

Another strong shortwave will move through the deep south
Wednesday into Thursday, resulting in another surface low moving
up the coast. In this case, dry high pressure will remain
inland, potentially limiting the inland extent and intensity of
the associated rain. We are showing the greatest pops along the
coast with only 20-30% farther inland. With the cool high
pressure in place and extensive cloud cover on Thursday, highs
will only reach the upper 50s to lower 60s.

Long term Thursday night through Sunday
Some model differences remain regarding how long the coastal
low will linger into Friday and thus the precipitation
potential. We hung onto slight chance pops through Friday
despite some guidance showing morning drying. For the rest of
the weekend, a dry cold front will swing through Saturday night,
but high pressure will generally prevail.

Aviation 14z Monday through Friday
Vfr conditions will prevail at kchs and ksav through 12z
Tuesday.

Extended aviation outlook: MVFR ifr ceiling vsby likely tue
night into Wed morning at both terminals due to low clouds and
rain. MVFR conditions possible Thursday night into Friday
morning as another low pressure system moves up the coast.

Marine
Through tonight: high pressure will remain to the north of the
local waters and will help to keep an enhanced pressure gradient
in place. This will support 15-20 knots across most of the
waters through this morning, before a slight decrease to around
15 knots by late today. Then overnight, the high will slide
offshore and a coastal trough will begin to set up. In response,
winds will turn more easterly and south-southeasterly with time
with speeds around 15 knots. Seas will generally average 2-4
feet across the area.

Northeast winds will be the rule during mid to late week as
high pressure builds from the northwest and a series of low
pressure systems move up the coast. The strongest gradient is
anticipated late Wednesday night through Thursday night during
which small craft advisories are likely.

Chs watches warnings advisories
Ga... None.

Sc... None.

Marine... None.

Near term... Bsh spr
short term... Jrl
long term... Jrl
aviation... Bsh jrl spr
marine... Bsh jrl spr


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
FPKG1 - 8670870 - Fort Pulaski, GA 17 mi54 min ENE 11 G 15 55°F 61°F1025.2 hPa
SAXG1 - Sapelo Island Reserve, GA 42 mi84 min NE 12 63°F 1024 hPa (+1.0)50°F
41033 46 mi76 min ENE 14 G 23 55°F 62°F1024 hPa
41008 - GRAYS REEF - 40 NM Southeast of Savannah, GA 47 mi94 min ENE 16 G 19 62°F 67°F3 ft1023.4 hPa (+1.5)49°F

Wind History for Fort Pulaski, GA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Hunter U. S. Army Airfield, GA4 mi28 minE 810.00 miFair60°F33°F36%1024 hPa
Savannah-Hilton Head International Airport, GA8 mi31 minE 710.00 miMostly Cloudy62°F32°F32%1024.5 hPa
Wright Army Airfield (Fort Stewart)/Midcoast Regional Airport, GA21 mi28 minE 710.00 miFair61°F35°F39%1024 hPa

Wind History from SVN (wind in knots)
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Last 24hrW8
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W7W8W5W3W4W4CalmCalmCalmCalmCalmCalmCalmCalmCalmN3NE4NE4NE4E7E8
1 day agoSW4SW8SW9S11S9S4S6S5S5SW5S9SW9SW8S9S10SW11SW10SW9W6W9
G15
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2 days ago--E5NE4E10E8E7NE3E6CalmE3CalmCalmNE3CalmCalmCalmCalmCalmCalmCalmCalmE4E4S6

Tide / Current Tables for Highway bridge, Ogeechee River, Georgia
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Highway bridge
Click for Map
Mon -- 06:58 AM EST     Sunrise
Mon -- 07:13 AM EST     0.06 feet Low Tide
Mon -- 08:39 AM EST     Moonrise
Mon -- 12:17 PM EST     1.16 feet High Tide
Mon -- 05:22 PM EST     Sunset
Mon -- 07:18 PM EST     Moonset
Mon -- 07:53 PM EST     0.07 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
110.90.70.50.30.10.10.10.40.711.21.110.90.70.50.30.10.10.20.50.8

Tide / Current Tables for Savannah River Entrance, Georgia Current
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Savannah River Entrance
Click for Map
Mon -- 01:17 AM EST     -1.61 knots Max Ebb
Mon -- 03:52 AM EST     0.00 knots Slack
Mon -- 06:27 AM EST     1.96 knots Max Flood
Mon -- 06:56 AM EST     Sunrise
Mon -- 08:37 AM EST     Moonrise
Mon -- 10:20 AM EST     -0.00 knots Slack
Mon -- 02:03 PM EST     -1.98 knots Max Ebb
Mon -- 04:35 PM EST     0.01 knots Slack
Mon -- 05:21 PM EST     Sunset
Mon -- 06:55 PM EST     1.79 knots Max Flood
Mon -- 07:16 PM EST     Moonset
Mon -- 10:30 PM EST     -0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
-1.5-1.6-1.5-10.11.31.91.91.51.10.3-0.7-1.4-1.8-2-1.7-0.80.51.51.81.51.10.4-0.4

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 Charleston, SC (12,3,4,5)
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Ground Weather Radar Station Charleston, SC
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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.