Thursday, March4, 2021
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Marine Weather and Tides
Hilton Head Island, SC

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 6:44AMSunset 6:24PM Thursday March 4, 2021 4:43 PM EST (21:43 UTC) Moonrise 12:00AMMoonset 10:21AM Illumination 64% 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- 417 Pm Est Thu Mar 4 2021
Tonight..S winds 5 to 10 kt, becoming W this evening, then becoming N 10 to 15 kt with gusts to 20 kt late. Seas 2 to 3 ft.
Fri..NE winds 15 to 20 kt, diminishing to 10 to 15 kt in the afternoon. Seas 2 to 3 ft, building to 3 to 4 ft in the afternoon.
Fri night..NE winds 10 to 15 kt. Seas 2 to 3 ft.
Sat..NE winds 15 to 20 kt. Seas 2 to 3 ft, building to 3 to 4 ft in the afternoon. A slight chance of showers.
Sat night..NE winds 10 to 15 kt, becoming N 15 to 20 kt after midnight. Seas 2 to 3 ft.
Sun..N winds 15 to 20 kt, diminishing to 10 to 15 kt in the afternoon. Seas 2 to 3 ft.
Sun night..N winds 10 kt. Seas 2 to 3 ft.
Mon..NE winds 10 kt. Seas 2 to 3 ft.
Mon night..E winds 5 to 10 kt. Seas 2 ft.
Tue..E winds 5 to 10 kt. Seas 2 ft.
Tue night..E winds 5 to 10 kt. Seas 2 ft.
AMZ300 417 Pm Est Thu Mar 4 2021
Synopsis for the coastal waters of south coastal south carolina and north coastal georgia.. High pressure will prevail into next week, aside from a low pressure system to the south brushing the area late this week into the weekend.


7 Day Forecast for Marine Location Near Hilton Head Island, SC
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location: 32.22, -80.77     debug


Area Discussion for - Charleston, SC
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FXUS62 KCHS 042105 AFDCHS

Area Forecast Discussion National Weather Service Charleston SC 405 PM EST Thu Mar 4 2021

SYNOPSIS. High pressure will prevail into next week, aside from a low pressure system to the south brushing the area late this week into the weekend.

NEAR TERM /UNTIL 6 AM FRIDAY MORNING/. This Evening and Tonight: Aloft, a dry northwest flow will persist between a low pressure trough across the Northeast and a weak cutoff low traversing the Central Plains. At the sfc, a light west-northwest wind will decouple early this evening under clear skies, setting up a fair amount of radiational cooling through the first half of the night. Sfc temps will likely cool off quickly this evening in response to the setup. A dry backdoor cold front will then approach the area from the north, likely arriving around midnight, pushing south through the remainder of the area during the overnight period. A cool northerly wind will follow in wake of the front and sufficient mixing from cold air advection should support a 5-10 mph wind late. Overnight lows will likely range in the low/mid 40s for much of the area, but should stay in the upper 40s to around 50 degrees along the immediate coast.

SHORT TERM /6 AM FRIDAY MORNING THROUGH SUNDAY/. High pressure will approach the region as a cold front shifts further south on Friday. All the while, a deep mid to upper level trough centered across eastern Canada will dig into the region and shortwave energy associated with the trough will help advect moisture into the area. Cloud cover is expected to increase late Friday night before clearing out on Sunday. There are some 12Z model discrepancies so still unsure of how much precip coverage the area will receive. Though, did limit POPs over land to slight chance and over the waters to chance. Any showers that do form should be light and no accumulation is expected. Winds could become gusty at times, mainly along the coast.

High temperatures will be in the 60s on Friday, then mid 50s to low 60s on Saturday and Sunday. Friday night low temps will be in the upper 30s to mid 40s. On Saturday, lows will be in the mid to upper 30s. While temps will be conducive for frost formation, Saturday night will not be a great night for radiational cooling and conditions seem too dry for widespread frost.

LONG TERM /SUNDAY NIGHT THROUGH THURSDAY/. High confidence this period as models are in decent agreement keeping high pressure in control with mainly dry weather, although there is a small chance for a few showers mid week as a coastal trough develops. The main forecast challenge will revolve around temperatures, which should stay below normal until possibly getting back near normal Tuesday. Still possible to see some frost and/or freezing temperatures inland each morning through Tuesday, with the best chance of a freeze Sunday night. Note that now that we're back into the growing season we will be issuing Frost Advisories and Freeze Watches/Warnings as needed.

AVIATION /21Z THURSDAY THROUGH TUESDAY/. VFR conditions will prevail at both CHS and SAV terminals through 18Z Friday. A backdoor cold front will push through the terminals late tonight, with nothing more noticeable than a wind shift to the north-northeast between 5-10 kt Friday morning persisting into early Friday afternoon.

Extended Aviation Outlook: VFR will prevail, though gusty winds are possible Friday through Sunday. While lower ceilings might develop late Friday into Sunday, prolonged flight restrictions are not expected.

MARINE. This Evening and Tonight: The local waters will remain well east of weak high pressure early, favoring light southerly winds turning west late this evening (no higher than 10 kt). A backdoor cold front will then enter the area starting around midnight tonight, pushing south through the remainder of the waters during the overnight period. Cold air advection behind the front and a tightening of the pressure gradient will support a northerly wind up to 15-20 kt at times and seas up to 2-4 ft. Wind gusts could briefly touch 25 kt across some waters approaching daybreak, but the event will be quite limited in duration. Thus, a Small Craft Advisory is not needed at this time.

Friday through Tuesday: NNE winds will prevail through Tuesday. As shortwave energy associated with an mid to upper level trough passes across the waters, the pressure gradient will become pinched. Winds will be 15-20 knots with occasional gusts to 25 knots and seas could approach 6 feet. Small Craft Advisories could be needed starting Friday, then again on Saturday though conditions seem marginal at this time. By late Sunday, winds and seas will subside as high pressure prevails.

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



NEAR TERM . DPB SHORT TERM . RAD LONG TERM . RJB AVIATION . DPB MARINE . DPB/RAD


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
FPKG1 - 8670870 - Fort Pulaski, GA 15 mi56 min ESE 7 G 8 62°F 59°F1014.9 hPa
41033 20 mi36 min S 5.8 G 7.8 59°F 57°F1013.9 hPa
ACXS1 - ACE Basin Reserve, SC 29 mi119 min ESE 1.9 68°F 1014 hPa43°F
41008 - GRAYS REEF - 40 NM Southeast of Savannah, GA 57 mi54 min SE 3.9 G 3.9 59°F 60°F2 ft1014.5 hPa (-1.8)49°F

Wind History for Fort Pulaski, GA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Hilton Head Island, Hilton Head Airport, SC4 mi54 minSSE 5 G 1010.00 miFair64°F30°F28%1014.6 hPa
Beaufort County Airport, SC15 mi49 minSW 610.00 miFair68°F41°F38%1013.9 hPa
Beaufort, Marine Corps Air Station, SC18 mi48 minNW 610.00 miFair73°F36°F26%1014 hPa
Savannah-Hilton Head International Airport, GA23 mi51 minNW 710.00 miFair74°F34°F23%1014.1 hPa
Hunter U. S. Army Airfield, GA24 mi48 minENE 710.00 miFair69°F44°F40%1013.9 hPa

Link to 5 minute data for KHXD

Wind History from HXD (wind in knots)
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Last 24hrN8
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N4CalmCalmCalmCalmNW3CalmNW3CalmNW3CalmW3W4CalmCalmN6N7N6E6CalmSE4E4SE5
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W46Calm5NW5CalmCalmCalmNE12
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Tide / Current Tables for Skull Creek, south entrance, Hilton Head Island, South Carolina
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Skull Creek
Click for Map
Thu -- 12:08 AM EST     8.04 feet High Tide
Thu -- 06:21 AM EST     -0.34 feet Low Tide
Thu -- 06:46 AM EST     Sunrise
Thu -- 10:20 AM EST     Moonset
Thu -- 12:30 PM EST     7.25 feet High Tide
Thu -- 06:23 PM EST     Sunset
Thu -- 06:31 PM EST     -0.38 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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87.76.54.72.70.8-0.2-0.11.134.86.37.17.16.24.62.70.9-0.2-0.30.82.54.46.1

Tide / Current Tables for Savannah River Entrance, Georgia Current
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Savannah River Entrance
Click for Map
Thu -- 12:55 AM EST     -0.00 knots Slack
Thu -- 04:02 AM EST     -2.31 knots Max Ebb
Thu -- 06:46 AM EST     Sunrise
Thu -- 07:09 AM EST     0.01 knots Slack
Thu -- 09:39 AM EST     2.08 knots Max Flood
Thu -- 10:21 AM EST     Moonset
Thu -- 01:12 PM EST     -0.00 knots Slack
Thu -- 04:01 PM EST     -2.07 knots Max Ebb
Thu -- 06:23 PM EST     Sunset
Thu -- 07:14 PM EST     0.01 knots Slack
Thu -- 10:00 PM EST     2.25 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.9-0.1-1.2-2.1-2.3-2.1-1.4-0.21.11.921.610.2-0.9-1.8-2.1-1.9-1.3-0.311.92.32

Weather Map
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GEOS Local Image of    EDIT
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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