Tuesday, October24, 2017 L-36.com

Marine Weather and Tides
Myrtle Beach, SC

Version 3.4
What's New / NOTES
6/25/2017 - NOAA is having a major issue that impact the 7 day forecast load times. Many users are reporting problems. The issue has been reported.
5/23/2017 - Worked with NOAA again to speed up the 7 day forecast load times. Thanks to them for being responsive.
5/19/2016 - There were issues with the 3 day airport observation history. I switched to another data source. Let me know if you see any issues with the data feeds.

Sunrise 7:27AMSunset 6:31PM Tuesday October 24, 2017 7:19 AM EDT (11:19 UTC) Moonrise 10:39AMMoonset 9:10PM Illumination 19% Phase: Waxing Crescent; Moon at 4 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- 641 Am Edt Tue Oct 24 2017
.small craft advisory in effect until 2 pm edt this afternoon...
Today..SW winds 10 kt, increasing to 10 to 15 kt this afternoon. Seas 4 to 6 ft, subsiding to 3 to 5 ft this afternoon.
Tonight..W winds 10 kt, becoming nw 15 to 20 kt after midnight. Seas 2 to 4 ft.
Wed..NW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft, then 3 ft in the afternoon.
Wed night..NW winds 10 to 15 kt. Seas 3 ft.
Thu..NW winds 10 to 15 kt, diminishing to 10 kt in the afternoon. Seas 2 to 3 ft.
Thu night..N winds 10 kt, diminishing to 10 kt or less after midnight. Seas 2 ft.
Fri..E winds 10 kt. Seas 2 ft.
Sat..E winds 10 kt. Seas 2 to 4 ft. A chance of showers through the night.
AMZ200 641 Am Edt Tue Oct 24 2017
Synopsis for coastal waters from surf city north carolina to south santee river south carolina out to 20 nautical miles.. A reinforcing cold front will move across the waters late tonight, shifting southwest winds to northwest. Canadian high pressure will settle across the waters Wednesday and Thursday. This high will then move offshore late week. Low pressure is expected to develop along an approaching cold front this weekend.

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 240837
area forecast discussion
national weather service wilmington nc
437 am edt Tue oct 24 2017

Drier air has worked into the area in the wake of an initial
front, but it will still be warm today. The passage of a
reinforcing cold front late tonight and Wednesday morning will
usher in much cooler temperatures for Wednesday and Thursday as
canadian high pressure takes hold. The risk for showers will
increase during the weekend as low pressure develops ahead of a
cold front.

Near term through tonight
As of 300 am Tuesday... Cold front as analyzed by wpc aligned near
the coast early this morning with a secondary cold front to follow
tonight. Any convection associated with the cold front has made it
off shore with only lingering light shwrs mainly north of the tip fo
cape fear. Residual low level moisture will produce some fog and
stratus through the early morning hours but fog will lift and clouds
will break up leaving a mostly sunny sky this afternoon. With a
shift back to SW the column will dry for the most part, with a
reinforcing push of colder air making its way in until later today
into tonight as secondary cold front moves through. Temps should
warm into the mid 70s today.

A broad and deep mid to upper level trough extending down from
the great lakes into the lower mississippi valley will slowly
shift east maintaining a deep SW flow above the sfc. This will
put the breaks on the cold front to our east but dry air will
make its way in behind the front through today. Pcp water up as
high as 1.82 inches will drop over an inch through this morning.

As the secondary cold front moves across the carolinas later
this afternoon into tonight, there will be a slight spike in pcp
water up near .9 inches but do not expect much aside from a few
clouds as the column remains dry and forcing is weak. GFS shows
850 temps dropping later today from close to 15c down to 6 to 8
c by daybreak wed. Overnight lows will drop to 45 to 50 most
places tonight.

Short term Wednesday through Thursday night
As of 300 am Tuesday... A reinforcing cold front late tonight and
wed morning will bring dry and significantly cooler air into
the eastern carolinas with no risk for rainfall mid week as
canadian high pressure takes up residence. The cold advection
will keep highs in the 60s both days and as cool as the mid 60s.

Lows will be mainly in the 40s and as cool as around 40. Patchy
frost, even in the coldest inland spots is not expected given
the warm soils. Minimum afternoon relative humidity will be in
the 35 to 40 percent range across a majority of the forecast
area both days.

Long term Friday through Monday
As of 300 pm Monday... Canadian high pressure will push offshore
Friday and with that, temps will return to seasonable levels.

Moisture will begin to increase Saturday on increasing
southerly winds as a pre-frontal airmass returns ahead of a
deep mid-level trough pushing through the ms vly. This will
drive a cold front across the area Saturday night into Sunday.

Ahead of this feature, a weak area of low pressure may develop
and move just off the coast, and while total column moisture
remains confined below 700mb, showers are possible late Saturday
through Sunday morning associated with this feature. This front
will bring the potential for the coldest air of the season
behind it, as 850mb progs drop below 0c and extended MOS numbers
feature values as much as 10 degrees below climo early next

Aviation 06z Tuesday through Saturday
As of 06z... Winds will remain SW through today as a cold front
moves slowly east. Drier air will make its way in behind the
front with last of thunderstorms making their way off the cape
fear coast. Some lingering moisture in the way of strato cu
around 5 to 7 kt ft will remain, but residual low level moisture
will produce areas of fog through this morning. The fog will
lift with some stratus around through mid morning and then most
places should become mainly clear. Winds will remain out of the
sw until later today when winds shift to the w-nw. These impacts
will affect all terminals through the early morning period with
MVFR to ifr conditions in fog with low vsby and ceilings.

Extended outlook... VFR Wednesday through Friday. Slight chance for
showers Saturday.

Near term through tonight ...

as of 300 am Tuesday... Small craft advisory conditions will persist
through this morning. Gusty offshore winds in convection associated
with cold front will back to the SW through today before a secondary
cold front moves through overnight tonight. Seas up to 5 to 8 ft
early this morning will diminish in a decreasing off shore flow
through today. Seas will drop below SCA thresholds by this afternoon
leaving seas of 3 to 5 ft over most waters tonight.

Short term Wednesday through Thursday night ...

as of 300 am Tuesday... Nw winds and cold advection will dominate
the period. The wind direction will likely veer to N or nne thu
night. Wind speeds will be up to around 15 kt Wed and Wed night,
diminishing to 10 kt or less during the day Thu and remaining
light Thu night. Seas will be 3 to 4 ft Wed into thu, subsiding
to 2 to 3 ft by Thu night.

Long term Friday through Saturday ...

as of 300 pm Monday... The center of high pressure will shift
offshore Fri with winds veering to NE Fri and E Sat at speeds of
10 kt or less. A cold front will approach from the W very late
sat causing wind speeds to uptick by the end of the period.

Seas will be 1 to 3 ft through the period.

Ilm watches warnings advisories
Sc... None.

Nc... None.

Marine... Small craft advisory until 2 pm edt this afternoon for amz250-

Near term... Rgz
short term... Rjd
long term... Jdw
aviation... Rgz

Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
MROS1 - 8661070 - Springmaid Pier, SC 2 mi49 min 1010.6 hPa
41024 - Sunset Nearshore (SUN 2) 24 mi71 min NNW 1.9 G 5.8 69°F 73°F1010.6 hPa
NIWS1 - North Inlet-Winyah Bay Reserve, SC 28 mi94 min Calm 65°F 1011 hPa62°F
41108 46 mi49 min 74°F7 ft

Wind History for Springmaid Pier, SC
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1 day
2 days

Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Myrtle Beach Air Force Base, SC2 mi23 minN 010.00 miMostly Cloudy64°F63°F96%1011.8 hPa
North Myrtle Beach Grand Strand Airport, SC13 mi26 minN 010.00 miOvercast64°F63°F96%1011.2 hPa
Conway Horry County Airport, SC16 mi24 minN 07.00 miMostly Cloudy59°F59°F100%1011.8 hPa

Wind History from MYR (wind in knots)
Last 24hrSE11SE8SE13SE14S14SE12SE11SE13S13S15S18S17
1 day agoN5E7E11E9NE11E11E11E12E10--E9E9E9E7E8E9SE8SE11S15
2 days agoN4N5N7NE66E8E7SE8E9E9E4E4E6E6E6E6NE6E8E7NE5NE5N4NE6NE5

Tide / Current Tables for Myrtle Beach, South Carolina
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Myrtle Beach
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Tue -- 04:45 AM EDT     0.65 feet Low Tide
Tue -- 07:28 AM EDT     Sunrise
Tue -- 11:16 AM EDT     5.30 feet High Tide
Tue -- 11:38 AM EDT     Moonrise
Tue -- 05:25 PM EDT     0.87 feet Low Tide
Tue -- 06:30 PM EDT     Sunset
Tue -- 10:09 PM EDT     Moonset
Tue -- 11:20 PM EDT     4.44 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

Tide / Current Tables for Socastee Bridge, South Carolina
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Socastee Bridge
Click for Map
Tue -- 02:33 AM EDT     2.12 feet High Tide
Tue -- 07:28 AM EDT     Sunrise
Tue -- 09:53 AM EDT     0.69 feet Low Tide
Tue -- 11:39 AM EDT     Moonrise
Tue -- 03:07 PM EDT     2.36 feet High Tide
Tue -- 06:31 PM EDT     Sunset
Tue -- 10:10 PM EDT     Moonset
Tue -- 10:41 PM EDT     0.81 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

Weather Map and Satellite Images
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Weather Map
IR Satellite Image from GEOS

GOES Local Image of Southeast    EDIT

Wind Forecast for Wilmington, NC (7,2,3,4)
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Ground Weather Radar Station Wilmington, NC
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weather_mapweather_map weather_map

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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.