Saturday, February27, 2021
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Marine Weather and Tides
Murrells Inlet, 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 6:12PM Saturday February 27, 2021 4:51 AM EST (09:51 UTC) Moonrise 6:44PMMoonset 7:17AM Illumination 100% Phase: Full Moon; Moon at 15 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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AMZ256 Coastal Waters From Murrells Inlet To South Santee River Sc Out 20 Nm- 335 Am Est Sat Feb 27 2021
Today..SW winds 5 to 10 kt, increasing to 10 to 15 kt late. Seas 2 to 3 ft.
Tonight..S winds 10 to 15 kt, diminishing to 5 to 10 kt after midnight. Seas 2 to 3 ft. Areas of fog. Vsby 1 to 3 nm.
Sun..SW winds 10 to 15 kt. Seas 3 to 4 ft. Areas of fog in the morning. A slight chance of rain. Vsby 1 to 3 nm in the morning.
Sun night..SW winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 5 ft.
Mon..SW winds 15 to 20 kt, becoming W 10 to 15 kt in the afternoon. Seas 3 to 5 ft. Rain likely.
Mon night..N winds 10 to 15 kt. Gusts up to 25 kt after midnight. Seas 3 to 5 ft. A chance of rain.
Tue..NE winds 15 to 20 kt, becoming E 10 to 15 kt. Seas 3 to 5 ft. A chance of rain through the day, then rain likely through the night.
Wed..W winds 10 to 15 kt, becoming n. Seas 3 to 4 ft. Rain likely through the day.
AMZ200 335 Am Est Sat Feb 27 2021
Synopsis for coastal waters from surf city north carolina to south santee river south carolina out to 20 nautical miles.. A weak front stalled in the area will lift north early this morning. SEa fog may develop early today and continue through today and tonight. Low pressure will cross the waters Monday, dragging the a front back into the area. This may lead to hazardous marine conditions early next week.


7 Day Forecast for Marine Location Near Murrells Inlet, SC
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location: 33.54, -79.1     debug


Area Discussion for - Wilmington, NC
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FXUS62 KILM 270826 AFDILM

Area Forecast Discussion National Weather Service Wilmington NC 326 AM EST Sat Feb 27 2021

SYNOPSIS. Today warms back up as offshore high pressure pushes a warm front to our north. A cold front will bring rain on Monday as well as a cool mid week period. Low pressure moving out of the Gulf of Mexico will lead to a rainy Wednesday.

NEAR TERM /THROUGH SUNDAY/. Once the warm front moves through and gets rid of the low clouds and fog this morning, we are looking at a decent 36 hour period with very spring-like temperatures. Potential issues through Sunday are the development of sea fog that could move onshore nearer the coast, the development of fog in general again tonight, and a very small chance of showers Sunday. Otherwise, expect partly cloudy skies with maximums in the mid 70s to around 80 both days except cooler numbers closer to the beaches. Lows tonight will fall to the upper 50s to lower 60s.

SHORT TERM /SUNDAY NIGHT THROUGH MONDAY NIGHT/. Low level thermal ridge still in place Sunday night ahead of approaching cold front. Temperatures to remain quite mild in the WAA and increasing cloud cover but rain holds off given lack of deep layer forcing. This changes on Monday as surface cold front impinges from the northwest. Forcing will be confined to the lower levels as mid level flow remains west-southwesterly and rather bereft of any shortwave impulses. Even so, with plentiful low level moisture rain chances will be high even though QPF potential rather low. Monday highs could still take a run at 70 before the front moves through and possibly leads to a non-diurnal curve. Healthy CAA Monday night will bring temperatures some 20 degrees colder than previous, values very close to climatology.

LONG TERM /TUESDAY THROUGH FRIDAY/. 850 millibar temperatures wind up negative early Tuesday over northern zones but recover slightly later in the day. Even so highs will struggle only to the low 50s. A fast moving and healthy shortwave that is notably missing in the GFS solution will lead to cyclogenesis over the Gulf of Mexico Tuesday that will spread rain across the area Tuesday night into Wednesday. Dry and seasonable air builds in behind this system on Thursday. The long term ends with considerable uncertainty. A system similar to but stronger than the mid week system will be taking shape to our west. Models diverge considerably with respect to its speed and strength and also whether or not it phases in with the northern branch/cold air for some non- liquid precipitation this far south.

AVIATION /23Z FRIDAY THROUGH WEDNESDAY/. A warm front just off the coast will slowly move inland and across the area late tonight. Increasing moisture and weakening winds will create better chances for low ceilings and fog, especially at ILM where forecast visibility is 0.5 mile between 08-14z. IFR conditions mainly in low stratus also appear likely to develop at LBT overnight as the front may take until daybreak to reach this location. Considerable uncertainty exists with visibility overnight at CRE and MYR where light winds and rich moisture could create patchy dense fog, however models are not uniformly bullish on this potential. VFR conditions should develop everywhere after 13-15z with winds becoming southwesterly.

Extended Outlook . Aside from some potential for sea fog or low stratus to affect the CRE or MYR airports Saturday night or Sunday, mainly VFR conditions are expected. A cold front will reach the area Monday afternoon with potential MVFR ceilings.

MARINE. Through Sunday . Expect winds to become southerly at 5 to 10 KT by daybreak with S to SW winds of 10 to 15 KT expected tonight and Sunday. Seas of 3 to 4 FT are expected with 1 to 3 NM sea fog possible today and tonight.

Sunday night through Wednesday . Southwesterly gradient winds increase Sunday night ahead of an approaching cold front. Wind and seas will both remain below thresholds for advisory. This may change on Monday as a few 6 ft seas materialize along the outer portions of the area. Later forecast iterations will be able to tell if enough of the marine zones have the advisory-worthy seas or if they remain confined to the last few nm of the 20 nm zones especially as the afternoon frontal veer to westerly acts to push them a bit out to sea. Wind swings around to NE by Tuesday as high pressure passes by to our north. Strengthening low pressure passing overhead on Wednesday could bring just about every wind direction as the circulation passes through. This will certainly steepen wave faces though predominant wave height lightly never exceeds 4 ft.

ILM WATCHES/WARNINGS/ADVISORIES. SC . None. NC . Coastal Flood Advisory from 8 AM this morning to 1 AM EST Tuesday for NCZ107. MARINE . None.

SYNOPSIS . NEAR TERM . 31 SHORT TERM . mbB LONG TERM . mbB AVIATION . TRA/31 MARINE . ILM


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
MROS1 - 8661070 - Springmaid Pier, SC 13 mi57 min 54°F
NIWS1 - North Inlet-Winyah Bay Reserve, SC 14 mi126 min SE 1 53°F 1021 hPa53°F
41024 - Sunset Nearshore (SUN 2) 39 mi43 min W 1.9 G 5.8 54°F 53°F1021.9 hPa

Wind History for Springmaid Pier, SC
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Myrtle Beach International Airport, SC14 mi55 minN 00.50 miFog52°F52°F100%1021 hPa
Conway Horry County Airport, SC20 mi56 minN 010.00 miOvercast50°F50°F100%1021.3 hPa
Georgetown County Airport , SC20 mi56 minN 01.25 miFog/Mist48°F48°F100%1021.3 hPa

Link to 5 minute data for KMYR

Wind History from MYR (wind in knots)
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Tide / Current Tables for Wachesaw Landing, Waccamaw River, South Carolina
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Wachesaw Landing
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Sat -- 03:19 AM EST     Full Moon
Sat -- 05:40 AM EST     -0.57 feet Low Tide
Sat -- 06:46 AM EST     Sunrise
Sat -- 07:16 AM EST     Moonset
Sat -- 11:04 AM EST     3.17 feet High Tide
Sat -- 06:10 PM EST     -0.36 feet Low Tide
Sat -- 06:11 PM EST     Sunset
Sat -- 06:44 PM EST     Moonrise
Sat -- 11:27 PM EST     2.92 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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2.521.30.6-0.1-0.5-0.50.11.12.12.93.232.61.91.20.5-0.1-0.3-0.10.71.62.42.9

Tide / Current Tables for Garden City Pier (ocean), South Carolina
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Garden City Pier (ocean)
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Sat -- 01:17 AM EST     -0.72 feet Low Tide
Sat -- 03:19 AM EST     Full Moon
Sat -- 06:46 AM EST     Sunrise
Sat -- 07:16 AM EST     Moonset
Sat -- 07:27 AM EST     5.81 feet High Tide
Sat -- 01:47 PM EST     -0.44 feet Low Tide
Sat -- 06:11 PM EST     Sunset
Sat -- 06:44 PM EST     Moonrise
Sat -- 07:50 PM EST     5.34 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-0-0.7-0.50.62.33.95.15.75.753.72.20.8-0.2-0.40.21.534.35.15.34.93.82.3

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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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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.