Friday, September20, 2019 L-36.com


Marine Weather and Tides
Port Wentworth, GA

Version 3.4
NOTICE
9/4/2019 Fixed the weather maps due to NOAA moving them.
7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports.
6/2/2019. Many thanks to a user for reporting an error on one of the Edit pages. The switch to PHP 7.2 caused many pages that previously worked to quit working. I fixed many but I still depend on users to report ones I missed. Please report errors HERE or send an email to me at L-36.com. Allen

Sunrise 7:10AMSunset 7:25PM Friday September 20, 2019 5:32 AM EDT (09:32 UTC) Moonrise 10:33PMMoonset 11:55AM Illumination 63% Phase: Waning Gibbous; Moon at 21 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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AMZ352 Waters From Edisto Beach Sc To Savannah Ga Out 20 Nm- 300 Am Edt Fri Sep 20 2019
.small craft advisory in effect through this evening...
Today..NE winds 15 kt with gusts to 20 kt. Seas 4 to 6 ft. A slight chance of showers.
Tonight..E winds 10 to 15 kt. Seas 4 to 6 ft, subsiding to 4 to 5 ft after midnight. A slight chance of showers in the evening.
Sat..E winds 10 to 15 kt. Seas 4 to 5 ft, subsiding to 3 to 4 ft in the afternoon.
Sat night..E winds 10 to 15 kt, diminishing to 5 to 10 kt after midnight. Seas 3 to 4 ft.
Sun..E winds 5 to 10 kt. Seas 3 ft.
Sun night..SE winds 5 to 10 kt. Seas 3 ft.
Mon..NE winds 5 to 10 kt. Seas 3 ft.
Mon night..S winds 5 to 10 kt. Seas 3 to 4 ft.
Tue..SW winds 10 kt. Seas 3 to 4 ft.
Tue night..S winds 10 kt. Seas 3 to 4 ft.
AMZ300 300 Am Edt Fri Sep 20 2019
Synopsis for the coastal waters of south coastal south carolina and north coastal georgia.. High pressure will prevail into early next week. A weak cold front could push into the area Monday night and linger through mid week before dissipating. Temperatures will be near to above normal through the period.


7 Day Forecast for Marine Location Near Port Wentworth, GA
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location: 32.17, -81.13     debug


Area Discussion for - Charleston, SC
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Fxus62 kchs 200720
afdchs
area forecast discussion
national weather service charleston sc
320 am edt Fri sep 20 2019

Synopsis
High pressure will prevail into early next week. A weak cold
front could push into the area Monday night and linger through
mid week before dissipating. Temperatures will be near to above
normal through the period.

Near term through tonight
As of 315 am: kclx detected a fine line of low dbz off the southern
sc coast, likely associated with a land breeze. This feature
was drifting very slowly east over the near shore waters. I will
anticipate that isolated showers will remain along and east of
the land breeze early this morning. High resolution guidance
suggest that the land breeze will transition to a sea breeze
between 15z-17z. Href and latest run of the hrrr indicate that
showers will increase along the coast ahead of the sea breeze,
especially across SE ga. The shower potential will be
highlighted with schc to chc pops, values peaking during the
mid-afternoon. Using a blend of mos, high temperatures are
forecast to range from the mid 80s across inland ga to around 80
along the coast.

Tonight: near term guidance indicates that the eastern edge of h7-h5
ridging will build over the forecast area. At the sfc, the center of
high pressure is expected to slide south over nc by daybreak sat.

The combination of light to calm winds and thin cloud cover should
support another night of low temperatures in the 60s.

Short term Saturday through Monday
Moderate to high confidence this period. Deep high pressure is
expected to prevail most of the period, although a weak cold front
looks to approach on Monday as tropical cyclone jerry moves north
well offshore between the bahamas and bermuda. Rain chances will be
almost zero, with the best chance of a few light showers near the ga
coast Sunday. Temperatures will generally warm through the period
staying near or above normal.

Long term Monday night through Thursday
Moderate confidence this period. Medium range guidance in decent
agreement indicating a weak cold front pushing into the area Monday
night before stalling out and eventually dissipating through mid
week. Meanwhile tropical cyclone jerry is forecast by the national
hurricane center to be moving north northeast well offshore. Weak
high pressure should then return late in the week. Overall not
expecting any significant rainfall. Temperatures should remain above
normal with heat indices back near 100 degrees across ga Wednesday
and Thursday.

Aviation 07z Friday through Tuesday
06z tafs:VFR forecast for kchs and ksav through the TAF period.

Ridging high pressure and mixing will likely yield gusts near 20
kts at both terminals this afternoon. A few showers are forecast
to track onshore along the SE ga coast today. At this time, the
showers should favor a passage south of ksav.

Extended aviation outlook: no significant concerns through
Wednesday.

Marine
I anticipate that isolated showers will remain along and east of the
land breeze early this morning. High resolution guidance suggest
that the land breeze will transition to a sea breeze between 15z-
17z. As a result, northeast winds this morning into early this
afternoon will veer from the east-northeast this afternoon.

Speeds should favor values between 15-20 kts. Tonight, the
center of sfc high pressure is expected to slide south over nc
by daybreak sat. The weakening pressure gradient should support
winds between 10-15 kts. Given veering winds, decreasing speeds,
and subsiding seas, small craft advisories for the near shore
sc and ga waters are expected to end during the overnight hours.

Saturday through Wednesday: high pressure will give way to a weak
cold front Monday night. The front should then dissipate across the
area through the middle of next week. Seas will be subsiding but
will remain at advisory levels beyond 20 nm through Saturday night.

Rip currents: an elevated risk for rip currents will likely continue
through at least Saturday mainly for lingering swells from
humberto.

Chs watches warnings advisories
Ga... High rip current risk through this evening for gaz117-119-139-
141.

Sc... High rip current risk through this evening for scz048>051.

Marine... Small craft advisory until 11 pm edt this evening for amz352.

Small craft advisory until 8 pm edt this evening for amz350.

Small craft advisory until 5 am edt Saturday for amz354.

Small craft advisory until 8 am edt Sunday for amz374.

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 15 mi50 min NNE 12 G 14
41033 39 mi24 min NE 16 G 19 72°F 81°F1021.1 hPa
ACXS1 - ACE Basin Reserve, SC 45 mi107 min N 2.9 64°F 1022 hPa58°F
SAXG1 - Sapelo Island Reserve, GA 53 mi92 min NE 7 72°F 1020 hPa (-1.0)67°F

Wind History for Fort Pulaski, GA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Savannah-Hilton Head International Airport, GA4 mi39 minN 510.00 miFair62°F57°F84%1022.1 hPa
Hunter U. S. Army Airfield, GA10 mi36 minNNE 610.00 miA Few Clouds64°F57°F78%1021.3 hPa
Hilton Head Island, Hilton Head Airport, SC23 mi37 minNNE 1110.00 miOvercast68°F60°F78%1022.3 hPa

Link to 5 minute data for KSAV

Wind History from SAV (wind in knots)
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Last 24hrNE8N7N8N9
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1 day ago--E6E11
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SE5E6E8E9NE8NE12E9E9CalmE3NE4N3N3NE4NE5NE5N3N4NE8N7N9
2 days agoCalmCalmCalmCalm--N5NE5N7NE846NE6SE9SE7SE7SE6SE6S3CalmSE3SE5SE4SE5NE3

Tide / Current Tables for Little Back River, Hwy. 17, Back River., Savannah River, South Carolina
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Little Back River
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Fri -- 01:24 AM EDT     7.48 feet High Tide
Fri -- 07:11 AM EDT     Sunrise
Fri -- 08:06 AM EDT     0.88 feet Low Tide
Fri -- 12:54 PM EDT     Moonset
Fri -- 01:55 PM EDT     8.24 feet High Tide
Fri -- 07:24 PM EDT     Sunset
Fri -- 08:39 PM EDT     1.62 feet Low Tide
Fri -- 11:33 PM EDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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6.87.47.46.85.84.42.71.40.91.32.74.86.77.98.27.86.95.74.12.61.81.72.43.8

Tide / Current Tables for Savannah River Entrance, Georgia Current
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Savannah River Entrance
Click for Map
Fri -- 01:46 AM EDT     -0.00 knots Slack
Fri -- 04:31 AM EDT     -1.53 knots Max Ebb
Fri -- 07:10 AM EDT     Sunrise
Fri -- 07:49 AM EDT     0.00 knots Slack
Fri -- 10:35 AM EDT     1.88 knots Max Flood
Fri -- 12:53 PM EDT     Moonset
Fri -- 02:12 PM EDT     -0.00 knots Slack
Fri -- 04:57 PM EDT     -1.70 knots Max Ebb
Fri -- 07:23 PM EDT     Sunset
Fri -- 08:37 PM EDT     0.00 knots Slack
Fri -- 11:05 PM EDT     1.39 knots Max Flood
Fri -- 11:32 PM EDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.90.4-0.1-0.9-1.4-1.5-1.1-0.60.21.11.81.81.40.70.1-0.6-1.4-1.7-1.5-1.1-0.50.31.11.4

Weather Map
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wmap_A
GEOS Local Image of Southeast    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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Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Charleston, SC (5,6,7,8)
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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.