Friday, February23, 2018 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 6:56AMSunset 6:19PM Friday February 23, 2018 11:33 PM EST (04:33 UTC) Moonrise 12:02PMMoonset 1:02AM Illumination 65% Phase: Waxing Gibbous; Moon at 9 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- 946 Pm Est Fri Feb 23 2018
Rest of tonight..SE winds 5 kt. Patchy fog late. Seas 3 ft.
Sat..S winds 5 to 10 kt. Seas 3 ft. Patchy fog in the afternoon.
Sat night..S winds 10 kt. Seas 3 to 4 ft. Patchy fog.
Sun..S winds 10 to 15 kt. Seas 3 to 4 ft. Patchy fog in the morning.
Sun night..S winds 10 to 15 kt, becoming sw 5 to 10 kt after midnight. Seas 3 to 4 ft. A chance of showers.
Mon..SW winds 5 to 10 kt. Seas 2 to 3 ft. A chance of showers.
Mon night..NW winds 5 to 10 kt, becoming N 10 to 15 kt after midnight. Seas 2 ft. A chance of showers in the evening.
Tue..NE winds 10 to 15 kt. Seas 3 to 4 ft.
Tue night..E winds 10 to 15 kt. Seas 3 to 4 ft.
Wed..SE winds 10 kt. Seas 3 ft. A slight chance of showers.
Wed night..S winds 10 kt. Seas 3 to 4 ft. A slight chance of showers.
AMZ300 946 Pm Est Fri Feb 23 2018
Synopsis for the coastal waters of south coastal south carolina and north coastal georgia.. Unseasonably warm high pressure will prevail into Sunday. A cold front will approach the region late Sunday before moving through Monday. High pressure is then expected until a warm front moves through Wednesday or Wednesday night followed by another cold front late in the week.

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 240248
afdchs
area forecast discussion
national weather service charleston sc
948 pm est Fri feb 23 2018

Synopsis
Unseasonably warm high pressure will prevail into Sunday. A
cold front will approach the region late Sunday before moving
through Monday. High pressure is then expected until a warm
front moves through Wednesday or Wednesday night followed by
another cold front late in the week.

Near term until 6 am Saturday morning
Late this evening: all remains clear on satellite imagery and
area web cams, so no change to the forecast thinking for the
remainder of the night. Previous discussion follows below.

Early this evening: not to sound like a broken record, but fog
and stratus are the main forecast issues for tonight. Similar to
the last few nights, there is a wide spread in the guidance and
some model sources are hard to trust given that they already
show a considerable amount of fog occurring over portions of the
coastal waters. Satellite imagery and web cams indicate that
fog stratus is not currently going on, so we are starting with a
clean slate. Model consensus seems to be hitting southeast
georgia harder with the fog potential and winds tonight will
closer to due south, so that seems to have some support. The 00z
kchs RAOB came back with 16 knots of flow at 1 kft, which is a
few knots stronger than previous nights, so perhaps chances are
lower along for the charleston area. Made some adjustments to
the coverage and descriptors for fog tonight, going with areas
of fog for most of the area outside of the tri-county region.

The potential for locally dense fog is certainly there, but it
is near impossible to have enough confidence on where and when
to mention it in the forecast.

Short term 6 am Saturday morning through Monday
A summer-like pattern will prevail into Sunday ahead of a cold
front which will approach late Sunday. Temperatures will be well
above normal through Sunday with low rain chances until
possibly late Sunday across inland areas where deeper moisture
and better forcing will align. Rain chances will likely peak
Sunday night and or Monday as the front moves into the area
along with deeper moisture and some upper-level forcing,
although timing of this is a bit tricky given the uncertainty in
timing of upper-level forcing. The front looks to be fairly
weak, as well as the instability, so do not anticipate much
rainfall or even significant thunder potential. Generally rain
amounts should be a quarter of an inch or less, but some places
could pick up a bit more, mainly closer to the pee
dee midlands csra. Also, conditions will support late
night early morning fog through at least Saturday, some of which
could be dense. By Sunday, low-level winds will be stronger and
less supportive of fog. The potential fly in the ointment
though would be if sea fog develops over the atlantic and moves
inland well beyond the morning hours pretty much either day over
the weekend.

Long term Monday night through Friday
A cold front will move offshore Monday night. High pressure
will pass to the north Tuesday, then move offshore Tuesday
night. A weak warm front may develop over the area Wednesday,
followed by a cold front approaching from the west on Thursday.

Aviation 03z Saturday through Wednesday
Kchs: the overall set up is nearly identical to last night,
with perhaps a little better moisture in place. Therefore, the
forecast is similar with a slightly earlier starting time with
the arrival of MVFR ceilings at 09z and then ifr 1-2 hours
later. Included a tempo group to account for visibility drop
around sunrise.VFR conditions should return by mid morning.

Ksav: the overall set up is nearly identical to last night,
with perhaps a little better moisture in place. Model guidance
consensus is hitting the savannah area harder with fog than
other locations. The forecast is similar, though it does
introduce the transition to MVFR and then ifr a few hours
earlier. Also included a longer tempo group for visibilities
below a mile around sunrise time. Fog could certainly become
dense, but confidence remains low.VFR conditions should return
by mid morning.

Extended aviation outlook: flight restrictions are likely each
night morning due to low clouds fog into Sunday. The risk for
restrictions will increase Sunday night Monday as a cold front
moves into the area with low clouds rain.

Marine
Through tonight: no highlights. East-southeast winds will of 5
to 10 knots will persist through the period. Isolated showers
possible, mainly beyond 15-20 nm offshore. There is a small
potential for some sea fog late tonight, mainly the near shore
waters south of the savannah river, but confidence not high
enough to put in forecast. Fog expected over the land will
likely get into the immediate nearshore waters late tonight.

Saturday through Wednesday: atlantic high pressure will persist
across the area through the weekend. The pressure gradient will
increase a bit as a cold front approaches but winds will mainly
stay below 20 kt. However, southeast swells will continue and
could push seas up near advisory levels toward the gulf stream.

Otherwise, warm and moist air will remain in place and could
lead to the development of sea fog across the cooler nearshore
waters through this weekend. Northerly winds will then develop
by Tuesday behind a passing cold front and could increase close
to advisory levels. Seas will also build, possibly reaching
advisory levels beyond 20 nm.

Climate
Record highs for february 24:
kchs: 81 2017
ksav: 86 2012
kcxm: 81 1930
record high minimums for february 25:
kchs: 62 1992
ksav: 63 1992
kcxm: 61 2017
record highs for february 25:
kchs: 81 2017
ksav: 82 1985
kcxm: 80 1930

Chs watches warnings advisories
Ga... None.

Sc... None.

Marine... None.

Near term... Bsh
short term... Rjb
long term... Ms
aviation... Bsh rjb
marine... Rfm rjb
climate...



Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
FPKG1 - 8670870 - Fort Pulaski, GA 17 mi45 min S 1 G 1.9 65°F 63°F1026.9 hPa
SAXG1 - Sapelo Island Reserve, GA 42 mi93 min ESE 4.1 65°F 1026 hPa (-1.0)65°F
41033 46 mi85 min ENE 3.9 G 7.8 60°F 62°F1026.1 hPa
41008 - GRAYS REEF - 40 NM Southeast of Savannah, GA 47 mi43 min SE 5.8 G 5.8 63°F 60°F4 ft1026.1 hPa (-0.8)63°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 mi37 minSE 310.00 miFair65°F62°F90%1026 hPa
Savannah-Hilton Head International Airport, GA8 mi40 minN 010.00 miFair65°F64°F97%1026.6 hPa
Wright Army Airfield (Fort Stewart)/Midcoast Regional Airport, GA21 mi37 minN 05.00 miFog/Mist62°F61°F98%1026 hPa

Wind History from SVN (wind in knots)
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Last 24hrCalmCalmCalmCalmCalmCalmCalmCalmCalmE3SE4S8SE6S9SE7SE9SE11
G17
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1 day agoSE6SE8SE3SE3CalmCalmCalmCalmCalmSE3SE5SW3SW3SE8SE5S6SE9S7SE7E6E4E4E5Calm
2 days agoSE7SE7SE5SE4SE4CalmCalmCalmCalmSE3S6S11S12
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Tide / Current Tables for Highway bridge, Ogeechee River, Georgia
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Highway bridge
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Fri -- 01:02 AM EST     Moonset
Fri -- 03:09 AM EST     First Quarter
Fri -- 04:30 AM EST     1.06 feet High Tide
Fri -- 06:59 AM EST     Sunrise
Fri -- 12:02 PM EST     Moonrise
Fri -- 12:09 PM EST     0.07 feet Low Tide
Fri -- 05:01 PM EST     0.93 feet High Tide
Fri -- 06:18 PM EST     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
00.20.60.91110.80.60.40.30.10.10.10.40.60.80.90.90.80.60.40.30.1

Tide / Current Tables for Savannah River Entrance, Georgia Current
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Savannah River Entrance
Click for Map
Fri -- 01:01 AM EST     Moonset
Fri -- 02:46 AM EST     -0.00 knots Slack
Fri -- 03:09 AM EST     First Quarter
Fri -- 05:28 AM EST     -1.77 knots Max Ebb
Fri -- 06:57 AM EST     Sunrise
Fri -- 09:08 AM EST     0.00 knots Slack
Fri -- 11:33 AM EST     1.49 knots Max Flood
Fri -- 12:00 PM EST     Moonrise
Fri -- 03:13 PM EST     -0.00 knots Slack
Fri -- 05:57 PM EST     -1.60 knots Max Ebb
Fri -- 06:16 PM EST     Sunset
Fri -- 09:17 PM EST     0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.81.20.6-0.2-1.2-1.7-1.7-1.5-1-0.10.81.41.41.10.70.2-0.7-1.4-1.6-1.5-1.1-0.30.81.7

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 (23,6,7,8)
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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.