Sunday, March26, 2017 L-36.com


Marine Weather and Tides
Skidaway Island, GA

Version 3.4
What's New / NOTES
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.
3/12/2015 - Added section for Gulf current for users in the GMZ marine zones.
This was requested by a user. If you have requests, please let me know.

Sunrise 7:17AMSunset 7:41PM Sunday March 26, 2017 7:06 AM EDT (11:06 UTC) Moonrise 5:29AMMoonset 5:21PM Illumination 1% Phase: Waning Crescent; Moon at 28 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- 600 Am Edt Sun Mar 26 2017
Today..SE winds 5 kt...increasing to 10 kt late. Seas 2 to 3 ft.
Tonight..SE winds 5 to 10 kt. Seas 2 to 3 ft.
Mon..S winds 5 to 10 kt. Seas 2 to 3 ft.
Mon night..S winds 5 to 10 kt. Seas 3 to 4 ft.
Tue..S winds 5 to 10 kt. Seas 3 to 4 ft.
Tue night..SW winds 10 to 15 kt. Seas 3 to 4 ft.
Wed..SW winds 5 to 10 kt. Seas 2 to 3 ft.
Wed night..S winds 5 to 10 kt. Seas 2 ft.
Thu..SE winds 10 to 15 kt. Seas 2 to 3 ft. A slight chance of showers and tstms.
Thu night..SE winds 10 to 15 kt. Seas 4 to 5 ft. A slight chance of showers and tstms. Mariners are reminded that winds and seas can be higher in and near tstms.
AMZ300 600 Am Edt Sun Mar 26 2017
Synopsis for the coastal waters of south coastal south carolina and north coastal georgia.. Atlantic high pressure will weaken early this week. A weak cold front will stall over the area during the middle of the week, then shift back north as a warm front Friday. Another cold front should move through Saturday or Saturday night followed by drier high pressure Sunday.

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 260728
afdchs
area forecast discussion
national weather service charleston sc
328 am edt Sun mar 26 2017

Synopsis
Atlantic high pressure will weaken early this week. A
weak cold front will stall over the area during the middle of the
week, then shift back north as a warm front Friday. Another cold
front should move through Saturday or Saturday night followed by
drier high pressure Sunday.

Near term /through tonight/
As of 325 am, regional radar composite indicated a weak band of
showers near the al/ga border, sliding slowly east. Coastal
ga/sc will remain of the western edge of h5 ridging this
morning, slowly weakening as a broad h5 s/w ripples over the
lower savannah river valley this afternoon. Forecast soundings
indicate that a significant inversion will remain across the
forecast area, centered around h75. In addition, afternoon
dewpoint depressions are forecast to remain greater than 20
degrees. Given the thermal and moisture profiles, sbcapes values
will remain limited to around 500 j/kg across inland ga, to
less than 100 j/kg near the sc coast. The fading band of showers
will likely move close to the southern savannah river valley,
then gradually dissipating. Pops will remain limited to schc and
the mention of thunderstorms will be removed from all zones.

High temperatures are forecast to range from the low 80s across
inland ga to the low to mid 70s across the beaches.

Tonight, the axis of a weak sfc ridge will pivot west over the ga/sc
coast. The sfc pattern will support light SE onshore flow across the
forecast area through the night. At the mid levels, heights should
slowly increase in the wake of the shallow s/w. I will keep pops
limited to the single digits. Low temperatures are forecast to range
in the upper 50s to around 60.

Short term /Monday through Wednesday/
Atlantic high pressure will weaken through the period, especially by
Wednesday when a weak cold front is expected to push offshore around
the mid-atlantic but struggle to move all the way through southeast
ga. Expect a decent chance of showers and thunderstorms Monday and
Tuesday when instability will be greatest and the sea breeze and
upper shortwave energy will be present. However, no appreciable
rainfall and/or severe weather is anticipated at this time.

Temperatures should push into the lower to mid 80s inland each
afternoon, likely warmest across interior southeast ga. Wouldn't be
surprised if upper 80s occurred Wednesday, mainly interior ga, due
to compressional heating with the front and offshore winds. Onshore
winds will keep beach areas much cooler, mainly in the 60s.

Long term /Wednesday night through Saturday/
The stalled front should shift north as a warm front Friday followed
by a cold frontal passage Saturday or Saturday night. Drier high
pressure should then return later in the weekend. Showers and
thunderstorms will be possible, mainly Thursday through Friday
night, with temperatures running above normal through at least
Saturday.

Aviation /08z Sunday through Thursday/
Flight conditions are forecast to remainVFR through 6z taf
period. As of 520z, IR satellite showed an expanding area of the
cooling cloud tops across the coastal plain. I will indicate at
least scattered mid level clouds over kchs and ksav through
early Sunday morning. Onshore flow will likely result in
increasing moisture on top of the mixed later during the
daylight hours, I will mention sct050 from late morning through
most of the afternoon. Winds should remain between 130-150
degrees through the TAF period, peaking between 10-15 kts during
the afternoon.

Extended aviation outlook: mainlyVFR. Brief restrictions possible
in any showers/thunderstorms, mainly mon/tue/thu/fri. Low
probability of restrictions due to early morning low clouds and/or
fog.

Marine
A sfc ridge will remain off the ga/sc coast through today and
tonight. Steady SE winds should remain over the marine zones through
the near term. Wave heights are forecast to persist between 2 to 3
feet within 20 nm, 3 to 4 feet across amz374.

Monday through Friday: no significant concerns with atlantic high
pressure generally in control until a weakening cold front moves
into the area Wednesday. The front will transition into a warm front
as it moves back north Friday. Seas could reach 6 feet near the gulf
stream through Tuesday due to swells from low pressure well
offshore. Advisories will be possible across the outer ga waters
through Tuesday and then for more of the area Thursday night/Friday
as strengthening southerly winds build seas to 6 feet again.

Chs watches/warnings/advisories
Ga... None.

Sc... None.

Marine... None.

Near term... Ned
short term... Rjb
long term... Rjb
aviation... Ned/rjb
marine... Ned/rjb


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
FPKG1 - 8670870 - Fort Pulaski, GA 12 mi49 min SE 5.1 G 7 64°F 63°F1021.3 hPa
SAXG1 - Sapelo Island Reserve, GA 36 mi67 min ESE 2.9 59°F 1021 hPa (+0.0)58°F
41008 - GRAYS REEF - 40 NM Southeast of Savannah, GA 37 mi77 min ESE 3.9 G 5.8 64°F 62°F4 ft1020.6 hPa (-0.7)61°F
41033 43 mi59 min ESE 3.9 G 5.8 62°F 60°F1021 hPa

Wind History for Fort Pulaski, GA
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NE4
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G8

Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Hunter U. S. Army Airfield, GA10 mi69 minESE 310.00 miA Few Clouds58°F57°F100%1020.6 hPa
Savannah, Savannah International Airport, GA18 mi74 minSSE 310.00 miPartly Cloudy58°F54°F87%1020.8 hPa

Wind History from SVN (wind in knots)
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Last 24hrSE3E3SE6SE6SE10S10SE11
G18
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S9SE13SE11SE6E6E3SE4SE5SE3SE6CalmCalmCalmE3Calm
1 day agoCalmCalmNE3E8E12
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SE12SE11E6E6E5E3CalmCalmCalmCalmSE3SE5SE5SE5
2 days agoNE7NE10
G15
NE7E9E10E12NE9NE7NE9E9E7E8E6E6E7NE5NE4NE5CalmCalmCalmCalmCalmCalm

Tide / Current Tables for Vernon View, Burnside River, Georgia
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Vernon View
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Sun -- 01:57 AM EDT     -0.27 feet Low Tide
Sun -- 06:28 AM EDT     Moonrise
Sun -- 07:20 AM EDT     Sunrise
Sun -- 08:16 AM EDT     8.17 feet High Tide
Sun -- 02:26 PM EDT     -0.50 feet Low Tide
Sun -- 06:20 PM EDT     Moonset
Sun -- 07:40 PM EDT     Sunset
Sun -- 08:31 PM EDT     8.40 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.80.3-0.30.42467.48.17.96.852.90.9-0.4-0.313.15.47.28.38.37.35.5

Tide / Current Tables for Savannah River Entrance, Georgia Current
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Savannah River Entrance
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Sun -- 02:19 AM EDT     0.00 knots Slack
Sun -- 05:01 AM EDT     2.31 knots Max Flood
Sun -- 06:27 AM EDT     Moonrise
Sun -- 07:19 AM EDT     Sunrise
Sun -- 08:43 AM EDT     -0.00 knots Slack
Sun -- 11:49 AM EDT     -2.30 knots Max Ebb
Sun -- 02:51 PM EDT     0.00 knots Slack
Sun -- 05:26 PM EDT     2.46 knots Max Flood
Sun -- 06:19 PM EDT     Moonset
Sun -- 07:39 PM EDT     Sunset
Sun -- 08:57 PM EDT     -0.00 knots Slack
Sun -- 11:51 PM EDT     -2.33 knots Max Ebb
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
-1.9-1.4-0.40.91.92.32.11.50.8-0.3-1.5-2.2-2.3-2-1.20.21.62.42.31.81-0.1-1.3-2.1

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 (7,2,3,4)
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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.