Thursday, April2, 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 6:59AMSunset 7:38PM Thursday April 2, 2020 10:47 AM EDT (14:47 UTC) Moonrise 12:35PMMoonset 2:20AM Illumination 71% 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- 1011 Am Edt Thu Apr 2 2020
This afternoon..NW winds 10 to 15 kt. Seas 2 to 3 ft.
Tonight..NW winds 10 to 15 kt, increasing to 15 to 20 kt after midnight. Seas 2 to 3 ft.
Fri..NW winds 15 to 20 kt, diminishing to 10 to 15 kt in the afternoon. Seas 2 to 3 ft.
Fri night..NW winds 10 to 15 kt. Seas 2 ft.
Sat..NE winds 5 to 10 kt, becoming e. Seas 2 to 3 ft.
Sun..E winds 5 to 10 kt, becoming s. Seas 2 to 3 ft.
Mon..SW winds 5 to 10 kt, increasing to 10 to 15 kt. Seas 2 to 3 ft.
AMZ200 1011 Am Edt Thu Apr 2 2020
Synopsis for coastal waters from surf city north carolina to south santee river south carolina out to 20 nautical miles.. An expansive north atlantic low will help keep active nw winds across the waters today through Fri. Improving wind conditions expected late Friday through Sunday, as high pressure settles over the area waters. Long period easterly swell from the expansive north atlantic low, will peak across the waters during this weekend.


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 021309 AFDILM

Area Forecast Discussion National Weather Service Wilmington NC 909 AM EDT Thu Apr 2 2020

SYNOPSIS. An expansive North Atlantic low and high pressure west of the area will combine to keep active NW winds across the region today and to a lesser degree Friday. Sunny spring weather is expected through most of the weekend, with cool mornings transitioning into mild afternoons. Clouds and warming will increase early next week, with a few showers likely into mid week, as several weak low pressure areas affect the Carolinas.

UPDATE/. Few edits required of the living and breathing forecast grids, dewpoints to slowly trend downward as dry air fans southward, with 10-meter winds peaking at around 12 knots through middle afternoon, dropping off tonight, then moderately breezy on Friday, max-T temperatures 1-3 degrees F warmer.

NEAR TERM /THROUGH FRIDAY/. The Eastern Carolinas will lie between ridging sfc and aloft west of the region and expansive deep low pressure meandering over the North Atlantic Waters and well offshore between New England and the Carolinas. This will result in decent NW flow sfc and aloft during this period. The sfc pg will remained tightened across the FA this period, just slightly higher across the ILM NC CWA when compared to the ILM SC CWA. Sfc NW winds will maximize during the late morning thru early evening hrs of each day with winds slightly hier southeast NC both days and especially closer to the coast due to the momentum of the NW winds down the East side of the Appalachians. Max temps each day will run at or slightly below (3 to 5 degrees) climo norms. There may be a few pockets during tonights lows that drop just below 40, especially sheltered from a NW wind direction. Frost development is not expected given the dry conditions and 5+ degree sfc dewpoint depressions. Overall, will stick closer to the NAM MOS Guidance given it's better performance during the past few days.

SHORT TERM /FRIDAY NIGHT THROUGH SATURDAY NIGHT/. Elongated surface ridge axis west of the area Fri night and Sat will shift off the coast late Sat and Sat night. This will begin a period of return flow and warm advection that will continue into the middle of next week. Clear skies through Sat become increasingly cloudy Sat night as moisture aloft moves in from the west. Abundance of low level dry air and lack of forcing will keep the region dry through the end of Sat night. Temperatures mostly near climo Fri night and Sat. The exception will be along the coast where northeast flow Sat afternoon will keep highs a little below climo. Development of weak warm advection Sat night keeps lows above climo.

LONG TERM /SUNDAY THROUGH WEDNESDAY/. Surface high just off the coast Sun morning will slowly drift east through mid-week. Weak 5h ridge builds north from the Gulf of Mexico early next week with a weak southern stream system crossing the southern states, topping the ridge. This may lead to a period of unsettled weather Tue and Wed. Strong warm advection and a frontal zone stalled north of the area will ensure temperatures above climo.

- Best rainfall chances will be Mon night into Wed

- Temperatures near to slightly above climo Sun will run well above climo Mon through Wed.

AVIATION /13Z THURSDAY THROUGH MONDAY/. VFR throughout the 06Z Taf Issuance Period. For the 24 hr period, the Eastern Carolinas will remain centered between deep and expansive low pressure over the offshore Atlantic Waters and high pressure ridging just west of the Eastern Carolinas. The pressure gradient will tighten after daybreak Thu as a sfc trof rotating around the offshore low re-enhances the NW flow to 10-15 kt during the day, then backing to westerly around 5 kt after sunset. Current mid-level clouds should scour out by daytime morning.

Extended Outlook . VFR conditions through the weekend. Flight restrictions possible for the early to mid week portion of next week.

MARINE. Today through Fri: Active NW winds at 10 to 20 kt expected during this period along with a few gusts up to 25 kt possible across the NC waters, mainly from Cape Fear northward. The main driver of these winds will come from an expansive north Atlantic low meandering over the offshore waters and high seas between New England and the Carolinas. As a result, the sfc pg will be tighter over the ILM NC waters than the SC Waters during this period. A couple sfc trofs rotating around the Atlantic Low will push across the waters, resulting in wind speeds temporarily running on the hier side of the 10-20 kt range.

Significant seas will be a combination of offshore, short period, wind driven waves and an underlying and slowly building Easterly 12 to 16 second period swell. Overall, the hier seas will occur across the ILM NC Waters. With an ENE-E swell, the shallow bathymetry of Frying Pan Shoals will help degrade this Easterly swell before reaching the local waters south of Cape Fear.

Fri Night through Mon: Brief period of 15 to 20 kt northwest flow possible later Fri night into Sat. Surface high starts to shift east on Sat, with gradient weaken slightly as winds shift to north and then northeast Sat and east and possibly southeast Sat night. Southerly flow becomes entrenched early next week, but the gradient will be on the weak side with winds only exceeding 10 kt late Mon. Northerly wind wave will dominate Fri into Sun before an easterly and then a southerly wind wave becomes more prominent Mon and Tue. Seas generally 2 to 4 ft with a peak of 3 to 5 ft building later Sat and continuing into Sat night.

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



SYNOPSIS . ILM UPDATE . Colby NEAR TERM . DCH SHORT TERM . III LONG TERM . III AVIATION . 43 MARINE . DCH/III


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
MROS1 - 8661070 - Springmaid Pier, SC 6 mi53 min 55°F
41024 - Sunset Nearshore (SUN 2) 25 mi39 min N 16 G 19 54°F 62°F1016.3 hPa
41119 25 mi87 min 62°F1 ft
NIWS1 - North Inlet-Winyah Bay Reserve, SC 30 mi62 min N 8.9 54°F 1016 hPa41°F
41108 49 mi47 min 62°F3 ft

Wind History for Springmaid Pier, SC
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Myrtle Beach International Airport, SC3 mi51 minN 1110.00 miFair56°F39°F55%1017.1 hPa
North Myrtle Beach Grand Strand Airport, SC12 mi54 minN 8 G 1610.00 miFair57°F39°F53%1016.7 hPa
Conway Horry County Airport, SC12 mi52 minN 610.00 miFair54°F37°F54%1017.3 hPa

Link to 5 minute data for KMYR

Wind History from MYR (wind in knots)
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2 days agoNW10NW10NW9NW73W10W6S8S7SW4CalmSW5CalmCalmNW4CalmCalmCalmCalmN3N4N4N8NE11
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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 -- 02:41 AM EDT     4.94 feet High Tide
Thu -- 03:20 AM EDT     Moonset
Thu -- 07:01 AM EDT     Sunrise
Thu -- 09:13 AM EDT     0.67 feet Low Tide
Thu -- 01:35 PM EDT     Moonrise
Thu -- 03:27 PM EDT     4.18 feet High Tide
Thu -- 07:37 PM EDT     Sunset
Thu -- 09:19 PM EDT     0.40 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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3.34.24.84.94.53.72.61.710.70.81.322.93.74.14.13.62.71.70.80.40.51.1

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 (10,2,3,4)
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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 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.