Tuesday, January28, 2020
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Marine Weather and Tides
Port Wentworth, GA

Version 3.4
NOTICE
12/16/2019 NOAA is having trouble with requests that include wind gusts. I am posting graphs without wind gusts until it gets fixed.
10/9/2019 Updated the Marine Zones.
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.

Sunrise 7:19AMSunset 5:55PM Tuesday January 28, 2020 9:33 PM EST (02:33 UTC) Moonrise 9:47AMMoonset 9:27PM Illumination 17% Phase: Waxing Crescent; Moon at 4 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- 601 Pm Est Tue Jan 28 2020
Tonight..S winds 5 kt, becoming E after midnight. Seas 1 foot.
Wed..NE winds 5 to 10 kt. Seas 1 to 2 ft. A chance of rain in the afternoon.
Wed night..NE winds 10 to 15 kt, increasing to 15 to 20 kt after midnight. Seas 2 ft, building to 3 to 4 ft after midnight. Rain.
Thu..NE winds 15 to 20 kt with gusts to 25 kt. Seas 3 to 4 ft, building to 4 to 5 ft in the afternoon. Rain likely in the morning.
Thu night..NE winds 15 to 20 kt. Seas 4 to 5 ft.
Fri..NE winds 15 to 20 kt. Seas 4 to 5 ft, subsiding to 3 to 4 ft in the afternoon. Rain likely.
Fri night..NE winds 10 to 15 kt. Seas 3 to 4 ft, subsiding to 2 to 3 ft after midnight. A chance of showers.
Sat..NW winds 15 to 20 kt. Seas 3 to 4 ft. A slight chance of showers.
Sat night..W winds 20 to 25 kt. Seas 4 to 5 ft.
Sun..W winds 15 to 20 kt. Seas 4 to 5 ft.
Sun night..W winds 15 to 20 kt. Seas 2 to 3 ft.
AMZ300 601 Pm Est Tue Jan 28 2020
Synopsis for the coastal waters of south coastal south carolina and north coastal georgia.. High pressure will prevail through tonight. A storm system will impact the area late Wednesday into early Thursday, followed by another storm system Friday into Saturday. High pressure is expected early next week.


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 282328 AFDCHS

Area Forecast Discussion National Weather Service Charleston SC 628 PM EST Tue Jan 28 2020

SYNOPSIS. High pressure will prevail through tonight. A storm system will impact the area late Wednesday into early Thursday, followed by another storm system Friday into Saturday. High pressure is expected early next week.

NEAR TERM /UNTIL 6 AM WEDNESDAY MORNING/. Only minor adjustments required with the early evening update, mainly to account for trends. There might be a little fog near rivers and marshes closer to daybreak, but not enough to add to the forecast.

Previous discussion . This Evening and Tonight: Weak sfc high pressure will prevail across the Southeast United States while subtle ridging occurs aloft. The pattern will result in dry weather conditions through the overnight period and a favorable radiational cooling setup as winds decouple early under clear skies. In general, temps are expected to dip into the mid/upper 30s away from the immediate coast. Temps should cool into the upper 40s/around 50 at the coast. The only caveat to lower temps tonight could be cirrus arriving earlier than expected well ahead of a low pressure system shifting across the South Central United States. Should this occur, temps could be a few degrees warmer.

SHORT TERM /6 AM WEDNESDAY MORNING THROUGH FRIDAY/. A mid level shortwave will slide across the Gulf Coast states on Wednesday and then eventually off the Southeast coast by Thursday morning. At the surface, an associated surface low will take a similar track but will remain south of the local area. Moisture will increase through the day, with rain chances ramping up accordingly, beginning in southeast Georgia in the afternoon/evening then spreading northward. The bulk of the precipitation is expected to occur Wednesday night. Temperatures will be near normal.

Quiet and mostly dry conditions are expected on Thursday, but this will be fairly short-lived as the next storm system takes shape upstream. On Friday, a wedge of high pressure will sit inland while another area of low pressure moves from the eastern Gulf of Mexico across the Florida Peninsula. Increasing isentropic ascent and lift from shortwave energy will support 50-60% PoPs. Temperatures will be slightly below normal.

LONG TERM /FRIDAY NIGHT THROUGH TUESDAY/. A storm system will bring showers to the Southeast Friday night, before moving away on Saturday. High pressure and dry conditions are expected late Saturday through Monday. Temperatures could be well above normal on Monday.

AVIATION /00Z WEDNESDAY THROUGH SUNDAY/. VFR conditions will prevail at both CHS and SAV terminals through 00Z Thursday. Over-running rains from the storm system in the northern Gulf Coast region on Wednesday could reach KSAV late in the day. But any flight restrictions there and at KCHS would take until beyond the latest TAF cycle.

Extended Aviation Outlook: Flight restrictions are possible Wednesday night associated with a storm system, and again Friday into Saturday.

MARINE. This Evening and Tonight: Weak high pressure will persist across all coastal waters tonight under subtle ridging aloft. The pattern should initially favor light onshore winds this evening (around 5 kt) that eventually become variable through the first half of the night, before becoming northeast/east late. Seas will range between 1-2 feet, highest across the outer Georgia waters.

Wednesday through Friday: Winds and seas will increase Wednesday night as low pressure passes south of the waters. Small Craft Advisories will be needed for at least portions of the marine zones outside the Charleston Harbor into Thursday. There will be some improvement thereafter, but northeast winds will still stay fairly elevated into late week as another storm system passes nearby.

Saturday and Sunday: The storm system will move away while high pressure approaches from the west. The interaction between these two features will cause strong winds and elevated seas. Small Craft Advisories are expected.

CHS WATCHES/WARNINGS/ADVISORIES. GA . None. SC . None. MARINE . None.

NEAR TERM . SHORT TERM . ETM LONG TERM . AVIATION . BSH/DPB MARINE .


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
FPKG1 - 8670870 - Fort Pulaski, GA 15 mi52 min WSW 1.9 G 1.9 50°F 53°F1017.3 hPa
41033 39 mi26 min WSW 3.9 G 5.8 53°F 55°F1017.9 hPa
ACXS1 - ACE Basin Reserve, SC 45 mi49 min Calm 43°F 1017 hPa42°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 mi41 minS 410.00 miFair48°F39°F74%1017 hPa
Hunter U. S. Army Airfield, GA10 mi98 minN 010.00 miFair47°F39°F75%1016.2 hPa
Hilton Head Island, Hilton Head Airport, SC23 mi39 minN 010.00 miFair43°F41°F93%1017.3 hPa

Link to 5 minute data for KSAV

Wind History from SAV (wind in knots)
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Last 24hrW5W7W7NW6NW8NW6NW5NW3NW5W4NW4N6N7N5NW5S4--NW8N6CalmS4S3S3S4
1 day agoW3W5W6W4W3W4SW6W3SW4W5NW4CalmCalmW6W7W11W14W13W11W11W9NW8NW5W4
2 days agoW4W5W5NW6W5W5W4W4SW3W5W6W9NW8NW9W7NW9NW11W10W10W8W4W3W4W5

Tide / Current Tables for Little Back River, Hwy. 17, Back River., Savannah River, South Carolina
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Little Back River
Click for Map
Tue -- 05:43 AM EST     0.11 feet Low Tide
Tue -- 07:20 AM EST     Sunrise
Tue -- 09:46 AM EST     Moonrise
Tue -- 11:37 AM EST     7.41 feet High Tide
Tue -- 05:54 PM EST     Sunset
Tue -- 06:13 PM EST     0.07 feet Low Tide
Tue -- 09:27 PM EST     Moonset
Tue -- 11:44 PM EST     6.93 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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6.85.94.52.91.40.40.21.12.94.96.57.37.46.95.74.12.30.90.10.5245.76.7

Tide / Current Tables for Savannah River Entrance, Georgia Current (2) (expired 1999-12-31)
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Savannah River Entrance
Click for Map
Tue -- 02:29 AM EST     -2.26 knots Max Ebb
Tue -- 05:47 AM EST     0.00 knots Slack
Tue -- 07:19 AM EST     Sunrise
Tue -- 08:06 AM EST     1.52 knots Max Flood
Tue -- 09:45 AM EST     Moonrise
Tue -- 11:04 AM EST     -0.00 knots Slack
Tue -- 02:52 PM EST     -2.50 knots Max Ebb
Tue -- 05:53 PM EST     Sunset
Tue -- 06:22 PM EST     0.00 knots Slack
Tue -- 08:33 PM EST     1.37 knots Max Flood
Tue -- 09:26 PM EST     Moonset
Tue -- 11:29 PM EST     -0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-0.8-1.6-2.2-2.2-1.7-0.80.21.11.51.30.70.1-0.7-1.6-2.3-2.5-2.1-1.4-0.40.61.31.30.90.3

Weather Map
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wmap_A
GEOS Local Image of    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.
Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Charleston, SC (21,6,7,8)
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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 numerous 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.