Wednesday, September22, 2021
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Marine Weather and Tides
Myrtle Beach, SC

Version 3.4
NOTICE
3/30/2021 -- ANZ330 has been split into ANZ331 and ANZ332. Click EDIT in Marine Forecast and select your new zone.
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 7:02AMSunset 7:13PM Wednesday September 22, 2021 10:41 PM EDT (02:41 UTC) Moonrise 7:24PMMoonset 7:29AM Illumination 97% Phase: Waning Gibbous; Moon at 16 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- 1009 Pm Edt Wed Sep 22 2021
Overnight..SW winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. A chance of showers and tstms late this evening, then showers and tstms likely.
Thu..NW winds 10 to 15 kt. Seas 3 to 4 ft. A slight chance of showers and tstms in the morning.
Thu night..N winds 10 to 15 kt. Seas 2 to 3 ft.
Fri..N winds 10 to 15 kt. Seas 3 to 4 ft.
Fri night..N winds 5 to 10 kt. Seas 2 to 3 ft.
Sat..N winds 5 to 10 kt. Seas 2 to 3 ft.
Sat night..NW winds 5 to 10 kt. Seas 2 ft.
Sun..N winds 5 to 10 kt, becoming sw. Seas 2 ft.
Mon..SW winds 5 to 10 kt. Seas 2 ft. Winds and seas higher in and near tstms.
AMZ200 1009 Pm Edt Wed Sep 22 2021
Synopsis for coastal waters from surf city north carolina to south santee river south carolina out to 20 nautical miles.. A strong cold front will move across the waters overnight followed by high pressure for the late week and weekend periods.


7 Day Forecast for Marine Location Near Myrtle Beach, SC
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location: 33.68, -78.89     debug


Area Discussion for - Wilmington, NC
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FXUS62 KILM 230214 AFDILM

Area Forecast Discussion National Weather Service Wilmington NC 1014 PM EDT Wed Sep 22 2021

SYNOPSIS. Unsettled weather will continue through tonight, with tropical moisture streaming into the Carolinas ahead of a cold front. After the cold front passes by Thursday morning, look for a much drier regime, as cool fall air settles into the area by the weekend.

UPDATE. Some minor adjustements to pops but overall the forecast remains on track.

NEAR TERM /THROUGH THURSDAY NIGHT/. Scattered convective activity will continue this afternoon ahead of a cold front, which is on tap to enter Darlington and Marlboro counties close to 00Z. A broken line of showers and thunderstorms will accompany the front, but should be weakening with both the loss of daytime heating as well as upper support. For now the far western CWA remains in a slight risk for severe weather per SPC, as there is potential for an isolated storm or two to produce damaging wind gusts.

The front is expected to reach the coast of NE SC around 06Z, but slow down as the mid/upper low begin to lift to the north. It may take until 12-13Z to finally clear out of the Cape Fear region, which would result in perhaps a 10 degree spread in min temps tonight. Inland is expected to dip into the low 60s overnight, but the SE NC coast should stay in the lower 70s ahead of the front. High pressure will build across the Mid- Atlantic region Thursday and Thursday night, with cooler and dry wx through the remainder of the near-term period.

SHORT TERM /FRIDAY THROUGH SATURDAY NIGHT/. Dry and lovely forecast for the short term period. Plenty of sunshine to open the first weekend of astronomical fall. Could have a couple of cumulus and cirrus clouds on Saturday with another trough swinging through just to the north, but overall, the column stays very dry. In fact, precipitable water values dive below three- quarters of an inch, which is about half of what it usually is for this time of year.

Highs Friday in the upper 70s, increasing slightly to near 80 on Saturday. Lows in the low-to-mid 50s.

LONG TERM /SUNDAY THROUGH WEDNESDAY/. Quiet forecast continues through the long term period. High pressure lingers over the Southeast before eventually pushing offshore by Tuesday into Wednesday. Airmass slowly modifies, as high temperatures eventually transition into the mid 80s, with lows dipping into the lower 60s. Sunny skies continue through this period. Some uncertainty by Wednesday, as forecast guidance doesn't know what to do with a trough that swings down from the Great Lakes region. The GFS is the most bullish at the moment, and if it verifies, could see rain chances come back into the forecast by the middle of next week. But for now, keeping the dry regime.

AVIATION /02Z THURSDAY THROUGH MONDAY/. Expect MVFR conditions through the overnight hours as plenty of low level moisture continues to reside over the area. Also expect some brief thunder from west to east with a cold front moving across the area. VFR conditions will develop quickly across western areas in the wake of the front and be a little more deliberate along coastal areas especially ILM.

Extended Outlook . VFR will dominate into the weekend after cold frontal passage early Thursday.

MARINE. Through Thursday Night . Have expanded the Small Craft Advisory to include the waters from Little River Inlet to Cape Fear, and will leave it in place up to Surf City, through 6 AM. Early afternoon buoy obs in the Cape Fear area waters indicate seas of 6-7 ft north of Little River inlet, as well as wind gusts of 25 kt to as high as 33 kt at JMPN7.

Scattered showers and a few tstms will continue through the afternoon and overnight hours, along and ahead of a cold front. The front is expected to push off the coast of NE SC after 2 AM, then slow down, not pushing off the coast of Cape Fear until around sunrise or just after. With fropa will come a rapid shift to northerly winds, as well as an end to the precip. High pressure will build in from the west, and will maintain northerly flow through Thursday night. Speeds should diminish THursday late morning into afternoon, then increase back towards 15 kt Thursday night.

Friday through Sunday . Northerly flow at 10-15kts continues through Saturday night, before winds become more variable by Sunday, slowing down to 5-10kts. Seas 2-3ft at the coast Friday increase to 3-5ft 20nm offshore. Seas generally decrease by Friday night, creating 1- 2ft waves at the coast and 2-3ft waves out 20nm from shore by Saturday. The decreasing continues through Sunday, with 1-2ft waves found all along the marine zones.

ILM WATCHES/WARNINGS/ADVISORIES. SC . None. NC . High Rip Current Risk from 6 AM EDT Thursday through Thursday evening for NCZ106-108. MARINE . Small Craft Advisory until 6 AM EDT Thursday for AMZ250-252.

SYNOPSIS . ILM UPDATE . SHK NEAR TERM . CRM SHORT TERM . IGB LONG TERM . IGB AVIATION . SHK MARINE . IGB/CRM


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
MROS1 - 8661070 - Springmaid Pier, SC 2 mi72 min 81°F
41024 - Sunset Nearshore (SUN 2) 24 mi94 min S 14 G 19 80°F 81°F1012.2 hPa
SSBN7 24 mi85 min 80°F3 ft
NIWS1 - North Inlet-Winyah Bay Reserve, SC 28 mi117 min SSW 8 80°F 1010 hPa76°F
41108 46 mi72 min 81°F4 ft

Wind History for Springmaid Pier, SC
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Myrtle Beach International Airport, SC2 mi46 minS 1310.00 miMostly Cloudy80°F77°F90%1010.1 hPa
North Myrtle Beach Grand Strand Airport, SC13 mi49 minSSW 1210.00 miMostly Cloudy80°F75°F85%1010.3 hPa
Conway Horry County Airport, SC16 mi47 minS 410.00 miFair75°F73°F94%1010.5 hPa

Link to 5 minute data for KMYR

Wind History from MYR (wind in knots)
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Tide / Current Tables for Myrtle Beach, South Carolina
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Myrtle Beach
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Wed -- 02:58 AM EDT     0.10 feet Low Tide
Wed -- 07:03 AM EDT     Sunrise
Wed -- 08:28 AM EDT     Moonset
Wed -- 09:04 AM EDT     5.92 feet High Tide
Wed -- 03:22 PM EDT     0.40 feet Low Tide
Wed -- 07:11 PM EDT     Sunset
Wed -- 08:23 PM EDT     Moonrise
Wed -- 09:26 PM EDT     5.71 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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31.60.50.10.51.63.14.55.55.95.64.83.52.21.10.40.51.32.63.955.65.64.9

Tide / Current Tables for Socastee Bridge, ICWW, South Carolina
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Socastee Bridge
Click for Map
Wed -- 12:50 AM EDT     2.34 feet High Tide
Wed -- 07:04 AM EDT     Sunrise
Wed -- 08:14 AM EDT     0.14 feet Low Tide
Wed -- 08:29 AM EDT     Moonset
Wed -- 01:06 PM EDT     2.33 feet High Tide
Wed -- 07:12 PM EDT     Sunset
Wed -- 08:24 PM EDT     Moonrise
Wed -- 08:34 PM EDT     0.28 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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2.22.32.21.91.61.10.70.30.10.30.91.62.12.32.321.71.30.90.50.30.30.71.3

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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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