Saturday, December7, 2019
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Marine Weather and Tides
Forestbrook, SC

Version 3.4
NOTICE
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.
6/2/2019. Many thanks to a user for reporting an error on one of the Edit pages. The switch to PHP 7.2 caused many pages that previously worked to quit working. I fixed many but I still depend on users to report ones I missed. Please report errors HERE or send an email to me at L-36.com. Allen

Sunrise 7:05AMSunset 5:08PM Saturday December 7, 2019 2:41 PM EST (19:41 UTC) Moonrise 2:35PMMoonset 2:31AM Illumination 83% Phase: Waxing Gibbous; Moon at 11 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- 1042 Am Est Sat Dec 7 2019
.small craft advisory in effect through Sunday afternoon...
This afternoon..N winds 10 to 15 kt, becoming ne 15 to 20 kt early, then diminishing to 10 to 15 kt late. Seas 3 to 4 ft.
Tonight..NE winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to 5 ft.
Sun..NE winds 15 to 20 kt, diminishing to 10 to 15 kt in the afternoon. Seas 3 to 4 ft. A chance of showers in the afternoon.
Sun night..E winds 10 to 15 kt, becoming se after midnight. Seas 3 to 4 ft. Showers likely.
Mon..SW winds 10 to 15 kt. Seas 4 to 5 ft. A chance of showers through the day.
Tue..SW winds 10 to 15 kt. Seas 4 to 5 ft. A chance of showers through the night.
Wed..N winds 15 to 20 kt, increasing to 20 to 25 kt. Seas 3 to 4 ft. A chance of showers through the day.
AMZ200 1042 Am Est Sat Dec 7 2019
Synopsis for coastal waters from surf city north carolina to south santee river south carolina out to 20 nautical miles.. Strong high pressure will ridge south across the area today into Sunday. Increasingly rough seas are expected to develop next week as a coastal low develops offshore.


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 071708 AFDILM

Area Forecast Discussion National Weather Service Wilmington NC 1208 PM EST Sat Dec 7 2019

SYNOPSIS. Cool, dry high pressure will build down from the north this weekend. A coastal warm front will lift north Sunday night, leading to warming temperatures Monday into Tuesday. A cold front will cross the coast Tuesday night and early Wednesday, bringing a cool down through mid-week and drying. Low pressure migrating from the Gulf late week, may bring wet weather next weekend.

UPDATE. Only adjustment early this morning, sky cover over inland NE SC where morning low clouds were bleeding east into the area. GOES Day Fog-Snow channel shows a likelihood of dispersement of these frail clouds, bringing about a big number of sunshine minutes today, or also asserted as, becoming mostly sunny.

NEAR TERM /THROUGH SUNDAY/. Pcpn and associated cloudiness will continue to push further out to seas and well away from the ILM CWA. The cold front has pushed just south and east of the FA and will continue to sink southward. In it's wake, modest 1030+ High pressure will ridge southward across the area today thru Sun with models indicating a similar wedge scenario setting up. Mid and upper levels dry out as winds aloft become W to NW, a downslope trajectory, today. Enough low level moisture to remain for possible diurnal driven cu this morning. But as further drying continues from the top downward, would expect skies to further improve this aftn. Late tonight thru Sun, A coastal trof develops just beyond the coastal waters and nearly parallel to the coastline of the ILM CWA. Models indicate this coastal trof will get pulled westward and onshore late Sun or Sun night. Moisture tapping of the Atlantic will increase Sun aftn and night, with indications of a decent swath of moisture in the vertical, up to 600MB by late aftn once the coastal front/trof moves onshore and slowly progresses inland. Have indicate showers breaking out off the ILM CWA coast early Sun morning and further filling inland as the day progresses. QPF will be light with one-tenth of an inch or less possible, ending early Sun evening. As for temps, initially stayed closer to a consensus of the NAM/GFS MET/MAV MOS guidance followed by some tweaking. The end result are temps progged to run near normal this period.

SHORT TERM /SUNDAY NIGHT THROUGH MONDAY NIGHT/. A coastal trough will become more defined as wedge of high pressure remains inland. Expect increasing isentropic lift with rain mainly along the coast initially, but moving inland and north as coastal trough/warm front lifts north. By Mon morning best lift will move north leaving a deep southerly flow of warm and moist air over the Coastal Carolinas. Temps Sun night will be much warmer than previous night in the 50s with temps warming to around 70 Mon aftn. WAA will continue into Mon night with some clouds around, but shwrs should remain at bay for the most part. Temps will be well above normal moving into Tues with overnight lows closer to 60.

LONG TERM /TUESDAY THROUGH FRIDAY/. Continued deep southerly flow ahead of an approaching cold front on Tuesday with plenty of WAA and should see a fair amount of sunshine pushing temps a good 15 degrees above normal . into the mid 70s most places. Convection associated with cold front will thin out as it moves toward the coast Tues night into early Wed. Cool high pressure will build down behind front Wed into Thurs with high temps about 15 to 20 degrees less than Tues, remaining in the 50s with some clearing into Thurs, but remaining on the chilly side. The front will lift back north as a warm front as as cutoff low digs down into the Gulf. This low pressure system will deepen and lift up from the Gulf spreading clouds and rain well ahead of the system Fri into the weekend.

AVIATION /17Z SATURDAY THROUGH WEDNESDAY/. Clear skies and VFR conditions throughout the period. A couple of fair weather cumulus could develop this afternoon with no impact. Winds out of the NE today with a few gusts 10-20 knots, mainly along the coast. Clear skies and no fog/stratus concerns overnight as winds maintain NE 5-10 knots.

Extended Outlook . Mostly VFR Sat night into Sun morning. TEMPO MVFR conditions possible at times Sun afternoon into Mon as a coastal trough develops and Tuesday as the next cold front approaches. VFR by mid-week.

MARINE. Today thru Sun: SCA conditions to materialize by mid to late this morning. This in response to modest 1030+ high pressure and tightening sfc pg combining with the cool surge associated with the high ridging across the local waters. This is not expected to materialize until mid-late daytime morning hrs. This will continue thru the night and likely well into Sun and possibly Mon. There may few time periods resulting in sub-SCA conditions. However, at this point it doesn't seem long enough to drop the SCA and therefore will likely keep it going into the next period when the SCA becomes more widespread. Significant seas remain docile with 2 to 3 ft attm. This will change later this morning as the dominate 7 to 8 second period, 2 to 3 foot easterly swell gives way to wind driven NE waves at 4 to 5 second periods. The coastal front/trof across the local waters early Sun will push onshore during the aftn and evening, taking the associated pcpn onshore and inland. At this point, it will be in the form of showers with isolated thunder staying just offshore.

Sun Night thru Wed: Winds will veer from onshore to southerly Sun night into Mon as coastal trough/warm front pushes inland and north. The onshore to southerly push should keep seas elevated, mainly between 3 and 5 ft, but intermittent SCA conditions are possible through early to mid week in increasing S-SW winds Mon and Tues as cold front approaches from the west and then in northerly winds Tues night into Wed as high pressure builds down behind cold front.

ILM WATCHES/WARNINGS/ADVISORIES. SC . None. NC . None. MARINE . Small Craft Advisory until 4 PM EST Sunday for AMZ250-252-254- 256.



SYNOPSIS . 8 UPDATE . MJC NEAR TERM . DCH SHORT TERM . RGZ LONG TERM . RGZ AVIATION . 21 MARINE . DCH/RGZ


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
MROS1 - 8661070 - Springmaid Pier, SC 6 mi53 min 57°F
41024 - Sunset Nearshore (SUN 2) 25 mi33 min ENE 7.8 G 12 58°F 56°F1024.7 hPa
41119 25 mi111 min 56°F1 ft
NIWS1 - North Inlet-Winyah Bay Reserve, SC 30 mi116 min NE 9.9 58°F 1024 hPa44°F
41108 49 mi71 min 58°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, SC3 mi45 minE 510.00 miFair61°F45°F56%1024.3 hPa
North Myrtle Beach Grand Strand Airport, SC12 mi48 minENE 710.00 miFair62°F44°F52%1024.1 hPa
Conway Horry County Airport, SC12 mi46 minNE 810.00 miFair61°F41°F48%1024.4 hPa

Link to 5 minute data for KMYR

Wind History from MYR (wind in knots)
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Last 24hrE3CalmSW5N3N5N4N3CalmCalmCalmN4CalmCalmNW4NW3NW3NW6N5N9N8
G15
NE7N8N7E5
1 day agoSE6S5S4CalmCalmCalmCalmCalmN3CalmCalmCalmCalmCalmCalmN3NW4NW5NW4N4N3SE6SE4E3
2 days agoSW9W8SW6W5W5W6SW4W8W12W10W7W7W8W7W7NW7NW10NW10NW10N14
G19
N9NW4W54

Tide / Current Tables for Myrtle Beach, Combination Bridge, ICWW, South Carolina
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Myrtle Beach
Click for Map
Sat -- 01:40 AM EST     0.61 feet Low Tide
Sat -- 02:31 AM EST     Moonset
Sat -- 06:27 AM EST     1.81 feet High Tide
Sat -- 07:07 AM EST     Sunrise
Sat -- 02:09 PM EST     0.89 feet Low Tide
Sat -- 02:34 PM EST     Moonrise
Sat -- 05:07 PM EST     Sunset
Sat -- 06:49 PM EST     1.75 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.80.60.60.91.21.61.81.81.71.61.41.21.110.911.21.51.71.71.71.51.31

Tide / Current Tables for Myrtle Beach (Springmaid Pier), South Carolina
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Myrtle Beach (Springmaid Pier)
Click for Map
Sat -- 02:31 AM EST     Moonset
Sat -- 03:25 AM EST     4.99 feet High Tide
Sat -- 07:06 AM EST     Sunrise
Sat -- 09:51 AM EST     1.37 feet Low Tide
Sat -- 02:34 PM EST     Moonrise
Sat -- 03:51 PM EST     4.71 feet High Tide
Sat -- 05:07 PM EST     Sunset
Sat -- 10:00 PM EST     0.82 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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2.63.64.54.94.94.43.62.721.51.41.62.23.13.94.54.74.43.72.71.81.10.81.1

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 (14,3,4,5)
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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 numerious 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.