Saturday, August15, 2020
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Marine Weather and Tides
Briarcliffe Acres, 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 6:36AMSunset 8:02PM Saturday August 15, 2020 6:57 AM EDT (10:57 UTC) Moonrise 1:48AMMoonset 4:38PM Illumination 13% Phase: Waning Crescent; Moon at 26 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- 325 Am Edt Sat Aug 15 2020
Through 7 am..SW winds 10 to 15 kt. Seas 2 to 3 ft. A chance of showers and tstms.
Today..SW winds 10 to 15 kt. Seas 3 to 4 ft. A chance of showers and tstms.
Tonight..SW winds 10 to 15 kt. Seas 3 to 4 ft. A chance of showers and tstms in the evening, then showers and tstms likely after midnight.
Sun..SW winds 10 to 15 kt. Seas 3 to 4 ft. Showers and tstms.
Sun night..W winds 10 to 15 kt, becoming nw 5 to 10 kt after midnight. Seas 3 to 4 ft. Showers and tstms likely, mainly in the evening.
Mon..NE winds 5 to 10 kt. Seas 2 to 3 ft. A chance of showers and tstms in the morning.
Mon night..E winds 5 kt, becoming N 5 kt after midnight. Seas 2 to 3 ft.
Tue..N winds 5 kt, becoming se. Seas 2 to 3 ft. A chance of showers and tstms.
Wed..S winds 5 to 10 kt. Seas 2 to 3 ft. A chance of showers and tstms through the day, then showers and tstms likely through the night. Winds and seas higher in and near tstms.
AMZ200 325 Am Edt Sat Aug 15 2020
Synopsis for coastal waters from surf city north carolina to south santee river south carolina out to 20 nautical miles.. Moderate S to sw winds will prevail through the weekend, as high pressure offshore extends across the coastal waters. Tropical storm kyle offshore from delmarva, will push east, further away from the u.s. East coast. Scattered tstms can be expected much of the upcoming weekend, especially in the morning, with less coverage expected Monday and Tuesday as drier air temporarily affects the area.


7 Day Forecast for Marine Location Near Briarcliffe Acres, SC
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location: 33.77, -78.82     debug


Area Discussion for - Wilmington, NC
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FXUS62 KILM 151033 AFDILM

Area Forecast Discussion National Weather Service Wilmington NC 633 AM EDT Sat Aug 15 2020

SYNOPSIS. Occasional shower and thunderstorm activity will prevail through the weekend, as several boundaries interact along with a humid and unstable atmosphere in place. Slightly drier air is expected to move in Sunday night and Monday, before unsettled weather returns by mid week.

NEAR TERM /THROUGH SUNDAY/. Active weather over the next 36 hours with showers and thunderstorms along a low pressure system and a series of frontal boundaries near the area. Model atmospheric profiles indicate a very moist environment (sounding climatology of precipitable water above the 90th percentile) and moderately unstable air mass (MLCAPE values between 1000 and 2000 J/KG) capable of producing thunderstorms with heavy rainfall and some gusty winds. Main concerns would be ponding of water on roadways, as well as urban and small stream flooding of poor drainage and low lying areas. Rain amounts will be highly dependent on where individual thunderstorms track, but many locations will likely see at least 0.50" over the next 36 hours with chances of receiving between 1 and 2 inches with locally higher amounts possible.

SHORT TERM /SUNDAY NIGHT THROUGH MONDAY NIGHT/. Seasonably nice weather in store for the short term period. Surface front will be exiting the area Sunday night, with decreasing from west to east after sunset. Dry air moves in behind the front as low level northerly flow develops. Have lowered pops some for Monday into the slight chance range, as any convection that manages to develop should remain isolated. With light winds and high temps in the mid to upper 80s range, expecting a nice day Monday. Lows around 70 Sunday and Monday nights, with some spots inland possibly reaching upper 60s Sunday night.

LONG TERM /TUESDAY THROUGH FRIDAY/. Unsettled weather starts to creep back into the forecast on Tuesday. Mid level moisture begins moving back in as deep south- southwest flow develops over the area late Tuesday through end of the week. Combination of weak surface boundary in the vicinity and sea afternoon sea breeze, widely scattered storms possible Tuesday afternoon. Late Tuesday, an upper level trough will be digging into the lower MS Valley before setting up southwest of our area Wednesday through Friday. With upper ridge situated to the southeast, this will allow a few rounds of impulses to move across the southeast and keep high chance pops in the forecast each day for the back half of the week, with greatest chances inland and to the south. Have continued to keep pops lower than guidance, with slight trend upwards. Temps near normal for long term period.

AVIATION /12Z SATURDAY THROUGH WEDNESDAY/. With PWATS over two inches, along with a low LFC, convection could fire at just about any time, best chance of course will be this afternoon and evening. Locally heavy rainfall, along with dangerous cloud to ground lightning are a good bet with brief gusty winds in the storms.

Extended Outlook . Scattered to numerous showers and tstorms expected this weekend. Drier air may work its way briefly across the area late Sun into early next week with less thunderstorm activity and coverage possible.

MARINE.

Through Sunday..

Total seas between 2 and 3 feet for the next 36 hours - increasing up to 3 to 5 feet beyond 15 NM into Sunday. Wind waves out of the southwest at 4 to 6 seconds with southeast swell between 8 and 10 seconds with southwest winds between 10 and 15 kts with gusts up to 20 kts at times. Inexperienced mariners or those with smaller vessels may encounter periodic hazardous conditions if venturing out beyond 15 NM through Sunday afternoon.

Sunday Night through Wednesday..

SW winds around 10 kts Sunday night ahead of approaching front will veer to northerly around 10 kts by Monday morning as front moves to the east. Variable winds around 5 kts Monday evening through Tuesday as pressure gradient relaxes. SSE flow 5-10 kts sets up Tuesday night through Wednesday as high pressure strengthens offshore. 3-4 ft seas Sunday night will be on the decline, with seas around 2-3 ft forecasted for Monday and holding steady through Wednesday. Seas combination of weakening S wind wave and a 1-3 ft SE swell, with weak SE swell from TS Josephine mixed in Tuesday into Wednesday. Thunderstorm coverage will be decreasing Sunday night, with slight chance Monday and Monday night over coastal waters before storm chances increase again late Tuesday through end of the week.

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

SYNOPSIS . VAO NEAR TERM . MCK SHORT TERM . VAO LONG TERM . VAO AVIATION . 43 MARINE . MCK/VAO


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
MROS1 - 8661070 - Springmaid Pier, SC 9 mi57 min 79°F
41024 - Sunset Nearshore (SUN 2) 19 mi49 min W 12 G 16 82°F 83°F1012.2 hPa
41119 19 mi40 min 83°F3 ft
NIWS1 - North Inlet-Winyah Bay Reserve, SC 35 mi72 min WSW 4.1 77°F 1012 hPa76°F
41108 43 mi57 min 83°F4 ft

Wind History for Springmaid Pier, SC
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
North Myrtle Beach Grand Strand Airport, SC6 mi64 minW 310.00 miFair80°F75°F87%1012.5 hPa
Myrtle Beach International Airport, SC8 mi61 minSW 410.00 miMostly Cloudy78°F75°F93%1012.7 hPa
Conway Horry County Airport, SC17 mi62 minN 010.00 miFair72°F71°F100%1012.9 hPa

Link to 5 minute data for KCRE

Wind History from CRE (wind in knots)
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Last 24hrCalmNW34545S9S10S13S12SW12SW14SW11SW10SW10SW12SW7SW8SW7SW10SW3SW7W4W3
1 day agoCalmCalmCalmS4SW5S6S9S13SW11S11SW10NE3W3CalmCalmW5CalmCalmW5W3W3CalmSW4Calm
2 days agoN3NE5E7E7SE8SE6E7S10S9S8S10S9S10SW8SW6W4SW3W5W4CalmW4CalmN4Calm

Tide / Current Tables for North Myrtle Beach, ICWW, South Carolina
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North Myrtle Beach
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Sat -- 02:20 AM EDT     0.99 feet Low Tide
Sat -- 02:47 AM EDT     Moonrise
Sat -- 06:37 AM EDT     Sunrise
Sat -- 07:09 AM EDT     1.68 feet High Tide
Sat -- 02:23 PM EDT     0.44 feet Low Tide
Sat -- 05:38 PM EDT     Moonset
Sat -- 07:44 PM EDT     2.17 feet High Tide
Sat -- 08:00 PM EDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.21.1111.21.41.61.71.61.51.310.80.60.50.50.81.41.82.12.22.11.91.6

Tide / Current Tables for Myrtle Beach Airport, ICWW, South Carolina
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Myrtle Beach Airport
Click for Map
Sat -- 01:21 AM EDT     0.99 feet Low Tide
Sat -- 02:46 AM EDT     Moonrise
Sat -- 06:32 AM EDT     2.55 feet High Tide
Sat -- 06:37 AM EDT     Sunrise
Sat -- 01:24 PM EDT     0.44 feet Low Tide
Sat -- 05:37 PM EDT     Moonset
Sat -- 07:07 PM EDT     3.29 feet High Tide
Sat -- 08:00 PM EDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.211.11.41.92.32.52.52.321.51.10.70.50.511.82.53.13.33.22.92.41.9

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.
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Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Wilmington, NC (6,6,7,8)
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Ground Weather Radar Station Wilmington, NC
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Disclaimer:
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.