Thursday, January23, 2020
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Marine Weather and Tides
Forestbrook, 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 7:15AMSunset 5:38PM Thursday January 23, 2020 8:17 PM EST (01:17 UTC) Moonrise 6:25AMMoonset 4:33PM Illumination 1% Phase: Waning Crescent; Moon at 28 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- 745 Pm Est Thu Jan 23 2020
.small craft advisory in effect through Saturday afternoon...
Tonight..E winds 10 to 15 kt. Seas 4 to 6 ft. A slight chance of showers late this evening and overnight. Patchy fog late.
Fri..E winds 10 kt. Seas 4 to 6 ft. A chance of showers. A slight chance of tstms in the afternoon.
Fri night..S winds 10 to 15 kt. Seas 4 to 6 ft. Showers with a slight chance of tstms. Vsby 1 to 3 nm in the evening.
Sat..W winds 10 to 15 kt. Seas 4 to 6 ft, subsiding to 3 to 4 ft in the afternoon. A chance of showers in the morning.
Sat night..W winds 10 to 15 kt, diminishing to 10 kt after midnight. Seas 3 to 4 ft.
Sun..W winds 10 kt. Seas 2 to 3 ft.
Mon..NW winds 10 kt. Seas 2 ft.
Tue..N winds 10 kt. Seas 2 ft. Winds and seas higher in and near tstms.
AMZ200 745 Pm Est Thu Jan 23 2020
Synopsis for coastal waters from surf city north carolina to south santee river south carolina out to 20 nautical miles.. High pressure will continue to extend down from the northeast into the area waters through Fri. The next storm system will affect the waters Friday into Friday night. Drier air will make its way in on Saturday as the cold front exits the area. High pressure will build in from the west from Sunday through the midweek period of next week.


7 Day Forecast for Marine Location Near Forestbrook, SC
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location: 33.74, -78.93     debug


Area Discussion for - Wilmington, NC
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FXUS62 KILM 240100 AFDILM

Area Forecast Discussion National Weather Service Wilmington NC 800 PM EST Thu Jan 23 2020

SYNOPSIS. Strong low pressure well west of the Carolinas, will help bring a weak warm front and a few showers onshore late tonight. The low pressure system will bring periods of rain to the Carolinas Friday and Friday night. A cold front will cross the coast early Saturday, with west winds and a drying trend through the weekend. Temperatures will cool to near normal for late January, Sunday through much of the next week, with only slight chances of rain mid week, as a weak disturbance through.

UPDATE. Minor changes mainly to Sky cover and hourly temps to reflect latest trends.

NEAR TERM /THROUGH FRIDAY NIGHT/. High pressure continues to extend down from the north as mid to upper ridge has slipped off to the east. This allowed a deep SW flow to develop with mid to high clouds thickening through tonight. As the sfc high shifts offshore through tonight winds will veer around becoming onshore, drawing in Atlantic moisture. This will increase clouds and moisture through the column and will increase potential for overrunning light rain or drizzle toward daybreak Fri.

Overall expect warm frontal processes producing low clouds and pcp into Fri morning and then as warm front lifts north, local area will get into warm sector ahead of approaching cold front. Winds will remain SE to S through Fri with low clouds and fog breaking up through Fri morning. Some breaks in clouds is possible Fri aftn, especially closer to the coast before convection develops into Fri eve.

SPC has outlined area in general thunder and have included slight chc of tstms late Fri through Fri night as cold front approaches and moves through the area. The cold front should move off the coast within a few hours of daybreak on Sat. Have included a non diurnal temp curve for Fri night to show warm temps through early overnight hours and drying and cooling from west to east toward morning.

Temps will have rebounded toward normal and will warm further on Fri with overnight lows remaining above normal due to clouds and WAA.

SHORT TERM /SATURDAY THROUGH SUNDAY NIGHT/. Main weather theme for the weekend, 'Drying and Cooler', in wake of a cold frontal passage early Saturday, perhaps a lingering shower near the coast at daybreak, but trends of partial clearing Saturday will be aided by the drying and scouring effects of west wind. The lag in stronger CAA, partial sunshine and downslope flow, will allow max-T on Saturday to climb near 60, but a bit cooler, 56-58 well inland. Sunday expect a good dose of sunshine minutes, seasonably cool with max-t/min-T closely aligned with climatology. Widespread 30s Sunday night but most areas will remain above freezing.

LONG TERM /MONDAY THROUGH THURSDAY/. Mainly fair weather in the extended, with a few wrinkles in the mix. A shortwave Monday passing across the SE states will pass mostly south of the forecast area, with only slight chances of rain off the NE SC coast. A similar short-wave track is seen late Wednesday, but a little farther north in latitude, will bring better chances of showers Wednesday night and very early Thursday before migrating offshore. Right now, this appears to be a low QPF system. Extended temperatures reflect closely with climatology much of next week.

AVIATION /01Z FRIDAY THROUGH TUESDAY/. Have maintained VFR through 6z with mainly mid and high clouds impacing the area. Clouds will lower and thicken thereafter and into Fri morning as high pressure at the sfc shifts offshore and frontal system approaches the area. This will allow winds to shift around becoming more onshore with increasing low level moisture off the waters, leading to MVFR to IFR vsbys and ceilings with patchy rain or drizzle and fog developing overnight toward daybreak Fri. Best potential for IFR/LIFR appears to be for inland terminals from 8-12z. Expect conditions to improve through Fri morning with fog and cloud bases lifting as warm front lifts north. Shower/tstm chances begin to increase late in the TAF period but mostly hold off until after 00Z.

Extended Outlook . Additional flight restrictions possible Fri evening and overnight as cold front moves through and brings a band of showers with possible embedded tstms. VFR should then rule most of the weekend.

MARINE. SCA continues through Saturday afternoon. NE winds will veer around becoming more E to SE into Fri as high pressure extending down from the north, shifts offshore. The lingering sfc low that moves E-NE from the Bahamas will continue to produce some longer period swells into Fri. This will help to keep seas up between 4 to 6 ft through Fri aftn. Therefore, although winds will temporarily drop below SCA criteria through Fri, the SCA will continue for seas near 6 ft.

A storm system will lift to the NE reaching the Ohio River Valley during Fri Evening. Increasing SE to S winds late Fri into Fri night should reach SCA levels. This will keep seas in SCA thresholds through Fri night.

Blustery west winds Saturday, in wake of a cold frontal passage around daybreak, will bring 25 kt gusts offshore, with residual seas of 4-7 feet. As a result, an Advisory for small craft vessels can be expected to remain in place during the day Saturday, before winds and seas begin to gradually abate late Saturday night and Sunday. As high pressure becomes more anchored into the upper and central Mississippi valley with low pressure NE or Bermuda, will bring NW-N winds of 10-25 kt Monday and Tuesday. As a result much improved marine conditions can be expected, especially early next week, and. longer period E waves subside, and NNW wind-seas remain light to moderate.

ILM WATCHES/WARNINGS/ADVISORIES. SC . None. NC . None. MARINE . Small Craft Advisory until 6 PM EST Saturday for AMZ250-252- 254-256.

SYNOPSIS . ILM UPDATE . MCW NEAR TERM . RGZ SHORT TERM . MJC LONG TERM . 08 AVIATION . RGZ/MCW MARINE . 08/RGZ


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
MROS1 - 8661070 - Springmaid Pier, SC 6 mi48 min 53°F
41024 - Sunset Nearshore (SUN 2) 25 mi70 min NNE 5.8 G 7.8 51°F 52°F1023.5 hPa
41119 25 mi88 min 52°F3 ft
SSBN7 25 mi26 min 1 ft
NIWS1 - North Inlet-Winyah Bay Reserve, SC 30 mi93 min NE 7 53°F 1022 hPa45°F
41108 49 mi48 min 53°F4 ft

Wind History for Springmaid Pier, SC
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure

Link to 5 minute data for KMYR

Wind History from MYR (wind in knots)
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Tide / Current Tables for Myrtle Beach, Combination Bridge, South Carolina
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Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.


Tide / Current Tables for Myrtle Beach (Springmaid Pier), South Carolina
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Myrtle Beach (Springmaid Pier)
Click for Map
Thu -- 06:20 AM EST     5.55 feet High Tide
Thu -- 06:24 AM EST     Moonrise
Thu -- 07:17 AM EST     Sunrise
Thu -- 12:43 PM EST     -0.31 feet Low Tide
Thu -- 04:33 PM EST     Moonset
Thu -- 05:37 PM EST     Sunset
Thu -- 06:30 PM EST     4.38 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-0.5-0.20.82.33.74.95.55.44.63.420.7-0.1-0.30.31.32.63.74.34.33.72.71.40.3

Weather Map
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wmap_A
GEOS Local Image of Southeast    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 (20,4,5,8)
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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.