Thursday, December5, 2019
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Marine Weather and Tides
Socastee, SC

Version 3.4
NOTICE
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.
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 7:04AMSunset 5:08PM Thursday December 5, 2019 11:50 AM EST (16:50 UTC) Moonrise 1:39PMMoonset 12:43AM Illumination 63% Phase: Waxing Gibbous; Moon at 9 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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AMZ254 Coastal Waters From Little River Inlet To Murrells Inlet Sc Out 20 Nm- 901 Am Est Thu Dec 5 2019
Rest of today..NW winds 10 to 15 kt, becoming N 10 kt this afternoon. Seas 2 to 3 ft late this morning, then 1 to 2 ft.
Tonight..NE winds 5 kt, becoming E after midnight. Seas 1 foot.
Fri..S winds 10 kt. Seas 1 foot. A chance of sprinkles in the afternoon.
Fri night..N winds 10 kt. Seas 1 foot, then 2 ft after midnight. A chance of rain in the evening, then a slight chance of showers after midnight.
Sat..NE winds 10 to 15 kt. Seas 3 to 4 ft.
Sun..NE winds 10 to 15 kt, becoming se 10 kt. Seas 3 to 4 ft. A chance of showers through the night.
Mon..S winds 10 to 15 kt. Seas 3 to 4 ft, building to 4 to 6 ft. A chance of showers.
AMZ200 901 Am Est Thu Dec 5 2019
Synopsis for coastal waters from surf city north carolina to south santee river south carolina out to 20 nautical miles.. High pressure will prevail today through early Friday. The next cold frontal passage will occur Friday night followed by strong high pressure from the north ridging across the area through the weekend. Increasingly unsettled weather with a potential coastal low possible early next week.


7 Day Forecast for Marine Location Near Socastee, SC
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location: 33.69, -79.01     debug


Area Discussion for - Wilmington, NC
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FXUS62 KILM 051412 AFDILM

Area Forecast Discussion National Weather Service Wilmington NC 912 AM EST Thu Dec 5 2019

SYNOPSIS. Dry and seasonable weather will continue as high pressure moves across the area through early Fri. Warmer weather on Friday will be followed by clouds and chance of rain Friday night as a cold front moves through. Cool and dry high pressure will build down from the north on Saturday with a wedge developing by Sunday. Unsettled but warm weather will come late Sunday through early next week as a warm front lifts north followed by a cold front into mid week.

UPDATE. No significant changes to the forecast this morning with the update. I did adjust temperature trends slightly for the first couple of hours. Increased cloud cover slightly as well with some high level moisture streaming in.

NEAR TERM /THROUGH FRIDAY/. High pressure dominates today with clear skies, light winds, and near normal temperatures this afternoon in the upper 50s to lower 60s. High pressure shifts to the east tonight and winds return from the southwest, which will advect warm and increasingly moist air. The next weather making system will be a fast moving upper level shortwave trough and associated surface cold front that will bring chances for some afternoon sprinkles and light rain Friday afternoon into the evening. Highs Friday will read the low to mid 60s, which is slightly above normal for early December.

SHORT TERM /FRIDAY NIGHT THROUGH SATURDAY NIGHT/. Short term begins with cold front moving through Friday night. Have slightly increase POPs for Friday night as low level moisture is most optimal in this time range. Regardless, not expecting much in the way of measurable rain with anything that forms. Lows Friday night will depend on cloud coverage. Euro clears the skies faster with lows dropping to near 40 degrees, while the GFS wants to maintain low clouds into the morning, especially along the coast. Currently favoring cooler temps for Friday night. High pressure builds in from the north Saturday keeping high temps few degrees below climo with afternoon sunshine. As the high to our north moves over the Northeast, a wedge builds into the region late Saturday. While short-lived, the wedge will keep temps cool Saturday night with low 30s inland and near 40 along the coast.

LONG TERM /SUNDAY THROUGH WEDNESDAY/. Wedge in place early Sunday will erode by Monday morning. High temps Sunday are tricky with warm advection right above the northerly flow at the surface. As the surface high over the NE moves offshore Sunday night, the aforementioned warm advection increased with the return flow. Weak isentropic lift late Sunday into Monday morning will lead to slight chance of rain, mainly along the coast. As the wedge erodes Sunday night and return flow develops at the surface, a non-diurnal temp trend develops, with temps near 50 degrees remaining pretty steady throughout the night. Rain chances and cloud cover increase during the day Monday through Tuesday with decent isentropic lift Monday and continued warm advection Tuesday. High temps both days look to reach 70 degrees, with lows Monday night near 60, which is the climatological high temp for this time of year. A cold front is progged to move through the area Tuesday afternoon/night. Behind the front, high pressure builds in from the NW cooling us down from the warm start to the week.

AVIATION /14Z THURSDAY THROUGH MONDAY/. Mostly clear skies with a few cirrus passing overhead and VFR throughout the period. Winds will be out of the northwest during the day and become calm overnight.

Extended Outlook . Mostly VFR. TEMPO MVFR conditions possible, associated with a cold front, late Fri and again Sun into Mon.

MARINE. Little concern offshore today with light northwest winds under 10 kts today shifting to the southwest Friday under 10 kts. Significant wave heights at 2 feet or less for the next 36 hours mainly from the northwest and southeast at around 6 seconds.

Cold front moves across the waters Friday night, with slight chance of rain and veering of winds from NW to NE. Tightened pressure gradient by Saturday afternoon as high builds in from the north, increasing northeast winds to near 20 kts through Sunday afternoon. Combined with increase of seas to 3-5 ft every 5-6 sec, will be close to SCA conditions. As high to our north moves offshore, return flow develops across our waters Sunday evening, with E-SE winds dropping to ~10 kts and seas decreasing to 2-4 ft every 6-7 sec. With broad high pressure over the western Atlantic Monday, a nice southerly fetch develops increasing seas to 4-6 ft every 8-9 sec Monday afternoon through Tuesday night. SCA may be need late Monday through Tuesday. S-SW winds Monday through Tuesday, increasing to 15-20 kts Tuesday afternoon. Will also see increased rain chances Monday and Tuesday. Another cold front moves through late Tuesday, with seas decreasing to 2-4 ft Wednesday with NW winds around 15 kts.

ILM WATCHES/WARNINGS/ADVISORIES. SC . None. NC . None. MARINE . None.

SYNOPSIS . ILM UPDATE . SHK NEAR TERM . MCK SHORT TERM . VAO LONG TERM . VAO AVIATION . 21 MARINE . MCK/SHK/VAO


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
MROS1 - 8661070 - Springmaid Pier, SC 6 mi57 min 55°F
NIWS1 - North Inlet-Winyah Bay Reserve, SC 25 mi66 min NNW 4.1 55°F 1019 hPa33°F
41024 - Sunset Nearshore (SUN 2) 30 mi43 min N 12 G 18 53°F 56°F1019.7 hPa
41119 30 mi121 min 55°F2 ft

Wind History for Springmaid Pier, SC
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Myrtle Beach International Airport, SC4 mi55 minN 910.00 miFair56°F28°F34%1019.5 hPa
Conway Horry County Airport, SC11 mi56 minNNE 810.00 miFair55°F30°F38%1019.6 hPa
North Myrtle Beach Grand Strand Airport, SC17 mi58 minN 12 G 1710.00 miFair56°F28°F34%1019.2 hPa

Link to 5 minute data for KMYR

Wind History from MYR (wind in knots)
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Tide / Current Tables for Socastee Bridge, ICWW, South Carolina
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Socastee Bridge
Click for Map
Thu -- 12:43 AM EST     Moonset
Thu -- 12:54 AM EST     0.54 feet Low Tide
Thu -- 05:42 AM EST     1.75 feet High Tide
Thu -- 07:05 AM EST     Sunrise
Thu -- 01:12 PM EST     0.71 feet Low Tide
Thu -- 01:38 PM EST     Moonrise
Thu -- 05:07 PM EST     Sunset
Thu -- 06:08 PM EST     1.86 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.60.50.71.11.51.71.71.71.51.31.10.90.80.70.81.11.51.71.91.81.71.41.20.9

Tide / Current Tables for Myrtle Beach, South Carolina
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Myrtle Beach
Click for Map
Thu -- 12:42 AM EST     Moonset
Thu -- 01:57 AM EST     4.19 feet High Tide
Thu -- 07:05 AM EST     Sunrise
Thu -- 07:59 AM EST     1.27 feet Low Tide
Thu -- 01:38 PM EST     Moonrise
Thu -- 02:22 PM EST     4.54 feet High Tide
Thu -- 05:06 PM EST     Sunset
Thu -- 08:31 PM EST     0.80 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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3.444.243.42.61.91.41.31.41.92.63.44.14.54.43.932.11.30.90.91.21.9

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 Wilmington, NC (11,2,3,4)
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Ground Weather Radar Station Wilmington, NC
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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 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.