Tuesday, January23, 2018 L-36.com


Marine Weather and Tides
Dutch Island, 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 7:20AMSunset 5:51PM Tuesday January 23, 2018 10:40 PM EST (03:40 UTC) Moonrise 11:20AMMoonset 12:00AM Illumination 49% Phase: First Quarter Moon; Moon at 7 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- 848 Pm Est Tue Jan 23 2018
Tonight..NW winds 10 to 15 kt. Seas 2 to 3 ft.
Wed..NW winds 10 to 15 kt, diminishing to 5 to 10 kt in the afternoon. Seas 2 to 3 ft.
Wed night..NW winds 10 to 15 kt, becoming N with gusts to 20 kt after midnight. Seas 2 ft, building to 3 to 4 ft after midnight.
Thu..NE winds 10 to 15 kt. Seas 3 to 4 ft.
Thu night..NE winds 10 to 15 kt. Seas 2 to 3 ft.
Fri..NE winds 10 to 15 kt. Seas 3 ft.
Fri night..E winds 10 to 15 kt. Seas 3 to 4 ft.
Sat..E winds 10 kt. Seas 3 to 4 ft.
Sat night..SE winds 10 to 15 kt. Seas 3 to 4 ft. A chance of showers.
Sun..SE winds 10 to 15 kt. Seas 3 to 4 ft. Showers likely.
Sun night..W winds 10 to 15 kt. Seas 3 to 4 ft. Rain likely.
AMZ300 848 Pm Est Tue Jan 23 2018
Synopsis for the coastal waters of south coastal south carolina and north coastal georgia.. High pressure will build in from the west tonight and prevail through the end of the work week. Another cold front will impact the area early next week.

7 Day Forecast for Marine Location Near Dutch Island, GA
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location: 31.98, -81.01     debug


Area Discussion for - Charleston, SC
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Fxus62 kchs 240236
afdchs
area forecast discussion
national weather service charleston sc
936 pm est Tue jan 23 2018

Synopsis
High pressure will build in from the west tonight and prevail
through the end of the work week. Another cold front will
impact the area early next week.

Near term until 6 am Wednesday morning
Much cooler and drier air continues to work into the forecast
evening this evening as low level cold air advection was
expected to persist through most of the overnight. Skies will
be mainly clear but some high thin clouds will stream along
the southern flanks of strong upper jet which extends from
texas to the mid atlantic region. We mainly just made some
hour to hour adjustments to the temp and dew point curves on
the evening update. For many areas, the overnight lows should
occur slightly after 12z Wednesday morning. Winds have decoupled
in a few areas, however there is enough gradient to keep light
northwest winds going in most locations.

Short term 6 am Wednesday morning through Friday
Quiet weather is expected to persist through the period. Surface
high pressure will build into the region from the west on Wednesday.

A shortwave will move across Wednesday night, helping send a
reinforcing shot of cooler, drier air through the area. The surface
high will then shift overhead Thursday and eventually offshore on
Friday. Subsidence and dry air will preclude any mentionable pops.

Temperatures will be fairly seasonable, although slightly warmer on
Friday as the flow turns onshore.

Long term Friday night through Tuesday
High pressure will be moving offshore Friday night and a strong cold
front will approach from the west on Saturday. The 00z models show
differences in the timing and the rainfall potential. The GFS is the
outlier and the ECMWF and canadian are relatively similar. We opted
to go with the foreign duo of models, which seems more realistic and
keeps the overall forecast pretty similar to what we had. Pops
gradually increase on Saturday, followed by rain on Sunday. Periods
of heavy rain and thunderstorms are not out of the question, but
we're still several days out. Following frontal passage, building
high pressure and dry conditions are expected on Monday.

Aviation 02z Wednesday through Sunday
Vfr conditions will prevail at both kchs and ksav terminals
through 00z Thursday.

Extended aviation outlook:VFR through Saturday. Potential for
flight restrictions may increase Sunday as rain chances increase
ahead of a cold front.

Marine
Tonight: an enhanced pressure gradient along near a departing
front along with a fair amount of cold air advection behind it,
will support close to 15 kt with higher gust further offshore
where jetting and mixing profiles are most favorable. Seas will
range from 2 ft near shore to 4-5 ft well offshore closer to the
gulf stream.

Wednesday through Sunday: surface high pressure is expected to
prevail through the end of the week. A brief surge expected
Wednesday night into Thursday, and wind speeds, especially in the
outer ga waters, could support a small craft advisory. It looks
marginal at this time so will continue to monitor trends. Beyond
that, winds seas will remain below advisory levels. A cold front
will approach from the west late in the weekend.

Equipment
The kclx radar remains out of service until further notice.

Repairs are ongoing. Adjacent radars include: kltx, kcae, kjgx,
kvax and kjax.

The downtown charleston observation site (chls1 kcxm) remains
out of service until further notice.

Chs watches warnings advisories
Ga... None.

Sc... None.

Marine... None.

Near term...

short term... Ect
long term...

aviation...

marine...

equipment...



Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
FPKG1 - 8670870 - Fort Pulaski, GA 7 mi41 min WNW 13 G 16 59°F 48°F1018 hPa (+2.1)
41033 38 mi33 min WNW 7.8 G 12 51°F 48°F1016.8 hPa
41008 - GRAYS REEF - 40 NM Southeast of Savannah, GA 41 mi51 min W 5.8 G 7.8 54°F 50°F3 ft1018 hPa (+2.5)44°F
SAXG1 - Sapelo Island Reserve, GA 42 mi41 min WNW 6 54°F 1018 hPa (+2.0)39°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, GA8 mi45 minWNW 1110.00 miFair57°F29°F35%1017.5 hPa
Savannah-Hilton Head International Airport, GA15 mi48 minWNW 810.00 miPartly Cloudy56°F30°F39%1018.3 hPa
Hilton Head Island, Hilton Head Airport, SC23 mi46 minWNW 8 G 1410.00 miFair59°F30°F34%1017.9 hPa

Wind History from SVN (wind in knots)
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Last 24hrS8S12S9
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1 day agoCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmE4E7E5E5SE6SE7S9SE9SE9SE6E5SE8SE6S6
2 days agoS3CalmSW3W5CalmCalmSW3S3CalmCalmCalmCalmNW3CalmCalmSW4SE8S5S9S3SE5SE5CalmCalm

Tide / Current Tables for Savannah Sheraton Resort Hotel, Wilmington River, Georgia
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Savannah Sheraton Resort Hotel
Click for Map
Tue -- 06:02 AM EST     0.35 feet Low Tide
Tue -- 07:22 AM EST     Sunrise
Tue -- 11:20 AM EST     Moonrise
Tue -- 12:21 PM EST     7.25 feet High Tide
Tue -- 05:49 PM EST     Sunset
Tue -- 06:36 PM EST     0.01 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
7.26.85.63.92.20.90.40.82.13.95.56.67.27.16.24.72.91.30.20.112.74.56.1

Tide / Current Tables for Savannah River Entrance, Georgia Current
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Savannah River Entrance
Click for Map
Tue -- 01:10 AM EST     -0.00 knots Slack
Tue -- 03:51 AM EST     -1.79 knots Max Ebb
Tue -- 07:21 AM EST     0.00 knots Slack
Tue -- 07:21 AM EST     Sunrise
Tue -- 09:58 AM EST     1.70 knots Max Flood
Tue -- 11:19 AM EST     Moonrise
Tue -- 01:37 PM EST     -0.00 knots Slack
Tue -- 04:23 PM EST     -1.76 knots Max Ebb
Tue -- 05:49 PM EST     Sunset
Tue -- 07:47 PM EST     0.00 knots Slack
Tue -- 10:28 PM EST     1.98 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.80.1-0.7-1.5-1.8-1.5-1-0.30.61.41.71.40.90.4-0.3-1.2-1.7-1.7-1.3-0.70.21.31.91.9

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 (22,6,7,8)
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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.