Saturday, April4, 2020
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Marine Weather and Tides
Socastee, SC

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 6:57AMSunset 7:40PM Saturday April 4, 2020 10:44 PM EDT (02:44 UTC) Moonrise 2:50PMMoonset 3:57AM Illumination 91% Phase: Waxing Gibbous; Moon at 12 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- 858 Pm Edt Sat Apr 4 2020
Overnight..E winds 5 to 10 kt. Seas 2 ft.
Sun..E winds 5 to 10 kt. Seas 2 to 3 ft.
Sun night..S winds 5 to 10 kt. Seas 2 ft.
Mon..SW winds 5 to 10 kt. Gusts up to 20 kt in the afternoon. Seas 2 to 3 ft. A slight chance of showers with isolated tstms.
Mon night..SW winds 10 to 15 kt. Seas 2 to 3 ft. Isolated tstms in the evening. A slight chance of showers.
Tue..SW winds 10 to 15 kt. Seas 2 to 3 ft. A chance of showers.
Wed..W winds 10 to 15 kt. Seas 2 to 3 ft.
Thu..W winds 10 to 15 kt. Seas 2 to 3 ft. A chance of showers through the night. Winds and seas higher in and near tstms.
AMZ200 858 Pm Edt Sat Apr 4 2020
Synopsis for coastal waters from surf city north carolina to south santee river south carolina out to 20 nautical miles.. Weak high pressure will prevail across the waters through Sunday while a large ocean low well off the mid-atlantic coast, moves farther offshore. Long period back-swells from this low will peak this weekend. High pressure will drop off the southeast coast early next week, bringing sw winds. Low pressure passing north of the waters will bring moderate west winds Wednesday and Thursday.


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 050004 AFDILM

Area Forecast Discussion National Weather Service Wilmington NC 804 PM EDT Sat Apr 4 2020

SYNOPSIS. High pressure will build in from the north over the weekend before moving offshore on Monday, leading to a warmup. A few showers may pop up Tuesday and Wednesday. Rain will also be possible Friday and Saturday as a cold front approaches.

UPDATE/.

A 'coastal flood advisory' was needed for the lower Cape Fear River for early Sunday morning, as tidal levels are expected to exceed minor flooding benchmarks by several inches. Impacts will be minimal.

No significant edits needed with early evening updates. Dewpoints slowly ascend overnight while 10-meter winds hold steady at 5 knots. Ensemble spread of 2-meter RH shows 80-95% throughout the interior after 9z/5am, so patches of ground fog probable in spots. Observed dewpoints also bumped up this afternoon over the coastal interior, on the ocean side of the sea breeze front, and this pool of slightly higher absolute humidity could foster pockets of dense fog late.

NEAR TERM /THROUGH SUNDAY NIGHT/. Overall . expect fair weather through the near term period. There could be a few more mid and high clouds over southern areas than northern areas tonight as moisture moves through in the southern stream aloft. We could then see an increase in clouds northern areas Sunday night as a front approaches from the north. Look for mins tonight in the mid 40s to around 50 with maxes Sunday in the low to mid 70s. Mins Sunday night will fall to the low to mid 50s.

SHORT TERM /MONDAY THROUGH MONDAY NIGHT/. high pressure moves off the coast on Monday allowing for a warming return flow. A weak surface trough drifts into the area from the northwest and it appears to enhance convergence along the sea breeze as model QPF appears concentrated along the coast. Have tweaked POPs accordingly. Most places away from the immediate coast will have a high close to 80. Forecast soundings show just enough instability that isolated thunder has been added.

LONG TERM /TUESDAY THROUGH SATURDAY/. Surface forcing appears to weaken on Tuesday but stronger mid level impulses will keep POPs in the forecast on Tuesday. Piedmont trough forms on Wednesday but interestingly guidance remains rain-free as will our forecast. The decrease in cloud cover will bolster the warmth. Rain chances return Thursday and Friday as a cold front approaches slowly. The timing of this boundary is not well agreed upon between various models making it difficult to ascertain both the best rain chances and when the area dries out following FROPA.

AVIATION /00Z SUNDAY THROUGH THURSDAY/. Very fine flight conditions this TAF cycle as VFR and easy winds are anticipated. The only exception may be shallow ground fog oozing onto a few tarmacs prior to daybreak, KCRE might be slightly favored 9z-11z. This should not pose much problem due to isolated coverage and limited depth. NE-VRBL winds 4 kt or less, til 18z or so, then return flow brings SE winds at the coast and SSW winds over interior airfields, generally 5-8 kts, with VFR through end of TAF period.

Extended Outlook . Flight restrictions are possible early to mid next week with increasing rain chances from a weak system moving through. Flight restrictions lift toward the end of the week.

MARINE. Light E to NE winds this evening will gradually become S to SE by Sunday night. Speeds will remain less than 15 KT through Sun. At night and seas will generally run 2 to 4 FT through then. Periods at or above 10 seconds could result in steep waves at inlet entrances, especially during a falling tide.

Southwesterly flow on Monday as high pressure moves off the coast where it will remain on Tuesday. Wednesday will see this high move further out to sea bringing more of a westerly flow. Seas will run 3- 4 ft early in the period and should get reduced by about a foot with the Wednesday veer.

ILM WATCHES/WARNINGS/ADVISORIES. SC . None. NC . Coastal Flood Advisory from 7 AM to 9 AM EDT Sunday for NCZ107. MARINE . None.



SYNOPSIS . ILM UPDATE . MJC NEAR TERM . 31 SHORT TERM . mbB LONG TERM . mbB AVIATION . 8 MARINE . 31/MBB


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
MROS1 - 8661070 - Springmaid Pier, SC 6 mi56 min 62°F
NIWS1 - North Inlet-Winyah Bay Reserve, SC 25 mi59 min NNW 1.9 56°F 1016 hPa54°F
41024 - Sunset Nearshore (SUN 2) 30 mi36 min SE 7.8 G 12 63°F 62°F1017.5 hPa
41119 30 mi84 min 62°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 mi48 minSE 310.00 miFair58°F53°F84%1017.1 hPa
Conway Horry County Airport, SC11 mi49 minN 010.00 miFair52°F48°F88%1016.9 hPa
North Myrtle Beach Grand Strand Airport, SC17 mi51 minSSE 310.00 miFair56°F52°F87%1017.1 hPa

Link to 5 minute data for KMYR

Wind History from MYR (wind in knots)
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Last 24hrCalmCalmCalmCalmNW4NW3N4N7N4NW4N5CalmE4E9E5SE8SE9SE9S9SE8SE6CalmCalmSE3
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W8--W7----3

Tide / Current Tables for Socastee Bridge, ICWW, South Carolina
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Socastee Bridge
Click for Map
Sat -- 03:58 AM EDT     0.10 feet Low Tide
Sat -- 04:56 AM EDT     Moonset
Sat -- 06:58 AM EDT     Sunrise
Sat -- 08:47 AM EDT     2.17 feet High Tide
Sat -- 03:50 PM EDT     Moonrise
Sat -- 04:38 PM EDT     0.11 feet Low Tide
Sat -- 07:39 PM EDT     Sunset
Sat -- 09:21 PM EDT     2.01 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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10.70.40.20.10.411.622.221.81.410.70.30.10.10.51.11.7221.8

Tide / Current Tables for Myrtle Beach, South Carolina
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Myrtle Beach
Click for Map
Sat -- 04:52 AM EDT     5.40 feet High Tide
Sat -- 04:55 AM EDT     Moonset
Sat -- 06:58 AM EDT     Sunrise
Sat -- 11:21 AM EDT     -0.05 feet Low Tide
Sat -- 03:49 PM EDT     Moonrise
Sat -- 05:27 PM EDT     5.09 feet High Tide
Sat -- 07:38 PM EDT     Sunset
Sat -- 11:38 PM EDT     -0.43 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.61.62.94.25.15.4542.71.40.5-00.10.71.93.24.3554.331.70.5-0.3

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 Wilmington, NC (22,6,7,8)
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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 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.