Monday, March1, 2021
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Marine Weather and Tides
Port Wentworth, GA

Version 3.4
NOTICE
1/26/2021 -- The West Coast Satellite images havd been updated. They now use GEOS-17.
1/1/2021 -- The 7 day forecast are now working well. Thank you NOAA for your support.

Sunrise 6:49AMSunset 6:23PM Monday March 1, 2021 8:50 PM EST (01:50 UTC) Moonrise 9:09PMMoonset 8:33AM Illumination 88% Phase: Waning Gibbous; Moon at 18 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- 625 Pm Est Mon Mar 1 2021
.small craft advisory in effect from 4 am est Tuesday through Tuesday evening...
Tonight..W winds 10 kt, becoming N with gusts to 20 kt late this evening, then increasing to 15 to 20 kt with gusts to 25 kt after midnight. Seas 3 to 4 ft. A chance of showers.
Tue..NE winds 20 kt with gusts to 25 kt. Seas 4 to 6 ft. A chance of showers in the morning, then showers in the afternoon.
Tue night..NE winds 15 to 20 kt with gusts to 25 kt. Seas 4 to 6 ft. Showers.
Wed..N winds 15 to 20 kt with gusts to 25 kt. Seas 4 to 6 ft. Showers, mainly in the morning.
Wed night..NW winds 15 to 20 kt, becoming N 10 to 15 kt after midnight. Seas 4 to 5 ft, subsiding to 3 to 4 ft after midnight.
Thu..N winds 5 to 10 kt. Seas 2 to 3 ft.
Thu night..W winds 5 to 10 kt, becoming nw 10 to 15 kt with gusts to 20 kt after midnight. Seas 2 to 3 ft.
Fri..NE winds 15 to 20 kt. Seas 3 to 4 ft.
Fri night..NE winds 10 to 15 kt. Seas 2 to 3 ft. A slight chance of showers.
Sat..NE winds 15 kt. Seas 3 to 4 ft. A slight chance of showers.
Sat night..NE winds 15 kt. Seas 3 to 4 ft. A slight chance of showers.
AMZ300 625 Pm Est Mon Mar 1 2021
Synopsis for the coastal waters of south coastal south carolina and north coastal georgia.. High pressure will prevail before low pressure passes across the region late Tuesday into Wednesday. High pressure will then prevail until late week when another storm system could brush the area. High pressure will return 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 012337 AFDCHS

Area Forecast Discussion National Weather Service Charleston SC 637 PM EST Mon Mar 1 2021

SYNOPSIS. High pressure will prevail before low pressure passes across the region late Tuesday into Wednesday. High pressure will then prevail until late week when another storm system could brush the area. High pressure will return early next week.

NEAR TERM /UNTIL 6 AM TUESDAY MORNING/. Early this evening: Surface analysis shows that the cold front has slipped to the coast and will continue pushing to the south and southeast over the next few hours. Overnight, high pressure will move into the Ohio Valley and steadily build into the forecast area, setting up a cold air damming scenario that will extent into Tuesday. Virtually every model shows some degree of shower and light coverage overnight within the convergence zone along the leading edge of the building high. In fact, radar imagery already shows an area of light rain spreading in from the west into southeast Georgia. The forecast shows rain chances topping out around 50 percent, but that could end up needing to be nudged higher. The best chance for rain looks to be across the southern half of the forecast area, especially along the I-16 corridor through southeast Georgia into the Savannah area. Overall, no significant rain amounts are anticipated. Overcast skies will prevail and a cooling north to northeast wind will occur through sunrise Tuesday. Forecast lows range in the upper 40s for most areas.

SHORT TERM /6 AM TUESDAY MORNING THROUGH THURSDAY/. A closed mid level low will exit out of the Southern Plains and track towards the East Coast on Tuesday. At the surface, high pressure will reside to the north while low pressure moves across the northern Gulf of Mexico. This low will eventually track northeast over/near the area Tuesday night into Wednesday. It's shaping up to be a decent rainmaker with PWats surging to 1.25-1.5 inches (well above early March climatology) and ample forcing in play. Widespread showers and perhaps a few embedded thunderstorms (primarily near the southeast Georgia coast) are expected, especially late Tuesday into Wednesday morning. Periods of moderate to perhaps heavy rainfall is possible, which could lead to minor flooding especially in low-lying and poor drainage areas. Storm total rainfall is forecast to be 2-3 inches. Otherwise, it will be significantly cooler than previous days with highs maxing out in the low to mid 50s. Lows Tuesday night will be in the 40s.

The aforementioned surface low positioned near or just off our coast at daybreak Wednesday will lift northeast away from the area through the day. While showers will likely linger in the morning, rain chances will decrease from southwest to northeast as drier air moves in. Most, if not all, precipitation should have exited by late afternoon. Highs are forecast to be in the mid 50s to around 60. Wednesday night, skies will clear and winds will lighten, allowing for good radiational cooling. Lows will range from upper 30s across the far interior to mid 40s at the immediate coast.

Quiet and dry weather will prevail on Thursday. High pressure will be the dominant feature, although a backdoor cold front will approach from the north late. Expect plenty of sun with highs mainly in the mid 60s.

LONG TERM /THURSDAY NIGHT THROUGH MONDAY/. Dry high pressure should prevail through Friday, although a reinforcing cold front Thursday night could cause a few light showers. Still watching for the potential of another southern stream storm system to affect the area Friday night into Saturday or even Saturday night but confidence remains low regarding impacts. A dry and much cooler air mass under high pressure should then return late in the weekend. Will have to watch for the potential for frost and/or freeze conditions Sunday and Monday mornings for inland areas.

AVIATION /00Z TUESDAY THROUGH SATURDAY/. VFR conditions are expected to prevail through the overnight at KCHS and KSAV. Areas of light rain will likely impact KSAV, and to a lesser extent KCHS, but no sub-VFR ceilings are visibilities are expected at this time. Tuesday will bring increasing rain chances from the southwest with lowering ceilings in the afternoon and evening. MVFR ceilings are timed into KSAV by 18z, lowering to IFR by 21z. Also rain will steadily increase and could lower visibilities late in the period as well. Sub-VFR conditions are expected to hold off at KCHS until very late in the period and possibly not until around 00z Wednesday. We have kept the forecast VFR and advertised some light rain late in the period. Elevated northeast winds will prevail at both sites through the day, with some gusts possible into the 15-20 knot range.

Extended Aviation Outlook: Flight restrictions likely later Tuesday into Wednesday as a storm system impacts the area. Low- level wind shear could also be a concern Tuesday night into early Wednesday. VFR will return for late week, before the next system brings potential for restrictions over the weekend.

MARINE. Tonight: West to northwest winds behind a cold front will shift north and eventually northeast overnight as high pressure wedges south across the interior. Speeds 10-15 kt this evening will increase to 20-25 kt with gusts to 30 kt by daybreak. Seas will build 3-5 ft nearshore waters and 4-6 ft over the Georgia offshore waters late. Small Craft Advisories will be hoisted for all legs, including Charleston Harbor, beginning early Tuesday.

Tuesday through Saturday: Elevated winds and seas are expected through mid week as low pressure passes across the region. Small Craft Advisories will be ongoing at the start of the period, and while there will likely be a brief period of improvement later in the day, conditions will again deteriorate Tuesday night into Wednesday. There is an outside chance for marginal gale force gusts in the immediate proximity of the low, though no Gale Watches or Warning are anticipated at this time. Expect improving conditions Wednesday night with no significant concerns until possible SCA conditions again starting Friday as a cold front pushes through and then another storm system potentially affects the area.

TIDES/COASTAL FLOODING. Minor coastal flooding is possible during the Tuesday late morning high tide near Charleston and along the entire southern SC/northern GA coast during the evening high tide. There is even an outside chance of moderate coastal flooding near Charleston during the evening high tide. In addition, heavy rainfall will be possible during the evening high tide which could exacerbate any flooding issues.

CHS WATCHES/WARNINGS/ADVISORIES. GA . None. SC . None. MARINE . Small Craft Advisory from 4 AM to noon EST Tuesday for AMZ330. Small Craft Advisory from 4 AM to 10 PM EST Tuesday for AMZ352- 354. Small Craft Advisory from 1 AM to 6 PM EST Tuesday for AMZ350. Small Craft Advisory from 4 AM Tuesday to midnight EST Wednesday night for AMZ374.



NEAR TERM . BSH SHORT TERM . ETM LONG TERM . RJB AVIATION . BSH MARINE . TIDES/COASTAL FLOODING .


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
FPKG1 - 8670870 - Fort Pulaski, GA 15 mi57 min NNW 14 G 16 69°F 58°F1018.7 hPa
41033 39 mi43 min WNW 7.8 G 14 64°F 57°F1017.1 hPa
ACXS1 - ACE Basin Reserve, SC 45 mi66 min WNW 1.9 69°F 1017 hPa59°F
SAXG1 - Sapelo Island Reserve, GA 53 mi51 min WNW 7 70°F 1019 hPa (+3.0)58°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 mi58 minWNW 97.00 miLight Rain67°F59°F76%1018.9 hPa
Hunter U. S. Army Airfield, GA10 mi55 minWNW 14 G 2210.00 miLight Rain69°F56°F63%1018.2 hPa
Hilton Head Island, Hilton Head Airport, SC23 mi61 minN 7 G 1410.00 miLight Drizzle70°F57°F64%1018.3 hPa

Link to 5 minute data for KSAV

Wind History from SAV (wind in knots)
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2 days agoS9S6CalmCalmCalmS3CalmCalmCalmCalmSW3CalmW5SW74SW8
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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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Mon -- 05:12 AM EST     -1.28 feet Low Tide
Mon -- 06:51 AM EST     Sunrise
Mon -- 08:32 AM EST     Moonset
Mon -- 10:45 AM EST     8.39 feet High Tide
Mon -- 05:31 PM EST     -1.02 feet Low Tide
Mon -- 06:22 PM EST     Sunset
Mon -- 09:09 PM EST     Moonrise
Mon -- 11:10 PM EST     8.18 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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7.25.83.81.6-0.2-1.2-0.71.44.26.68.18.47.86.54.62.40.5-0.8-0.80.73.35.87.58.2

Tide / Current Tables for Savannah River Entrance, Georgia Current (2) (expired 1999-12-31)
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Savannah River Entrance
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Mon -- 01:39 AM EST     -2.96 knots Max Ebb
Mon -- 04:56 AM EST     0.00 knots Slack
Mon -- 06:50 AM EST     Sunrise
Mon -- 07:27 AM EST     2.16 knots Max Flood
Mon -- 08:31 AM EST     Moonset
Mon -- 10:23 AM EST     -0.00 knots Slack
Mon -- 02:03 PM EST     -3.06 knots Max Ebb
Mon -- 05:22 PM EST     0.00 knots Slack
Mon -- 06:21 PM EST     Sunset
Mon -- 07:52 PM EST     2.15 knots Max Flood
Mon -- 09:08 PM EST     Moonrise
Mon -- 10:48 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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-2-2.8-2.9-2.3-1.20.11.32.121.40.4-0.6-1.7-2.7-3.1-2.7-1.8-0.50.81.82.11.70.8-0.2

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NOTE: This section has been updated as of 1/26/2021. If the image you are expecting is not showing, please let me know. You may use the EDIT function to update your location.
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