Tuesday, September26, 2017 L-36.com

Marine Weather and Tides
Socastee, 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 7:06AMSunset 7:07PM Tuesday September 26, 2017 1:58 PM EDT (17:58 UTC) Moonrise 11:56AMMoonset 10:31PM Illumination 35% Phase: Waxing Crescent; Moon at 6 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- 1009 Am Edt Tue Sep 26 2017
.small craft advisory in effect through Wednesday evening...
Rest of today..N winds 15 to 20 kt with gusts up to 25 kt. Seas 6 to 8 ft, subsiding to 5 to 8 ft this afternoon.
Tonight..N winds 15 to 20 kt with gusts up to 25 kt. Seas 5 to 7 ft, subsiding to 4 to 6 ft after midnight.
Wed..NW winds 15 to 20 kt, diminishing to 10 to 15 kt in the afternoon. Seas 4 to 6 ft, subsiding to 3 to 5 ft in the afternoon.
Wed night..W winds 10 to 15 kt, becoming nw 10 kt after midnight. Seas 2 to 4 ft.
Thu..W winds 10 kt. Seas 2 to 4 ft.
Thu night..W winds 10 kt, becoming N after midnight. Seas 2 to 3 ft.
Fri..NE winds 10 kt. Seas 2 ft. A chance of showers and tstms through the night.
Sat..NE winds 10 to 15 kt. Seas 2 to 4 ft. A chance of showers and tstms through the day. Winds and seas higher in and near tstms.
AMZ200 1009 Am Edt Tue Sep 26 2017
Synopsis for coastal waters from surf city north carolina to south santee river south carolina out to 20 nautical miles.. The center of hurricane maria will pass well east of the waters today. The storm will linger east of cape hatteras Wednesday before accelerating northeast Wednesday night. A cold front will move across the waters Thursday night with high pressure building from the northwest Friday and Saturday.

7 Day Forecast for Marine Location Near Socastee, SC
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location: 33.69, -79.01     debug

Area Discussion for - Wilmington, NC
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Fxus62 kilm 261724
area forecast discussion
national weather service wilmington nc
124 pm edt Tue sep 26 2017

Hazardous beach conditions will continue as hurricane maria
moves slowly north offshore of the carolinas. Maria will
accelerate away from the united states beginning Thursday.

A cold front passage late Thursday will bring cooler and drier
air into the carolinas Friday into this weekend.

Near term through tonight
As of 1015 am Tuesday... Forecast is in good shape with only
minor tweaks needed. The main challenge will be the erosion of
the stratus layer later this afternoon and evening. Previous
discussion follows:
northward moving hurricane maria will slowly
pass well east of the area today, moving northeast of the area
tonight. Breezy northerly winds will become northwest later today
and into tonight. Moisture below 500 mb remains high through the
period as maria's circulation continues to spread an abundance of
tropical moisture over the region. Downward motion due to mid-level
subsidence on the periphery of the storm will work to offset what
little diurnal instability develops. Low level cloud cover will
limit heating today, keeping highs in the upper 70s to lower 80s in
most areas. Across inland sc there may be a little less cloud cover,
allowing for slightly more insolation (and marginally warmer temps).

There will be a little less subsidence across inland sc but also a
little less moisture. Cannot rule out an isolated shower but the
best shot at measurable rainfall during the period looks to be
across southeastern nc. Light showers and or sprinkles will be
possible through early evening with mid to late afternoon favored.

By early evening the best low level convergence shifts north and
diurnal instability decreases. Do not expect a lot of precipitation
both in coverage or amount, but brief showers sprinkles certainly
remain possible. Clouds will linger overnight and, combined with
strong boundary layer mixing, will help keep lows well above

Short term Wednesday through Thursday night
As of 300 pm Monday... By daybreak on Wednesday, maria will be
positioned roughly 150 miles east of CAPE hatteras, meandering
there into Thursday, before an acceleration eastward Thursday
night. This progression will open the door for cold frontal
passage late Thursday night and early Friday, bringing a change
in air mass Friday into the weekend. This will result in temps
more indicative climate-wise for late september, after an above
normal temp regime this week. This will be a dry cold front as
moisture aloft remains in limited supply, and subsidence aloft
will be formidable in n-nw flow. Downslope flow prior to the
cold frontal passage will result in exceptionally warm temps,
and while 95 degrees will be a difficult record to break at ilm
on Wednesday, the 91 on Thursday set back in 1998 could be
closely approached.

Long term Friday through Monday
As of 300 pm Monday... Subsidence in the wake of maria and pre-
frontal warming will lead to one more day of above-average
temperatures before a cooling trend commences. A consensus of
guidance gives us highs of around 90 on Thursday. A cold front
will move offshore later on Thursday, bringing us near to well-
below normal temperatures by Friday, with cool weather
continuing into the weekend. The cold front will come through
dry, although isolated to widely scattered showers are possible
along the coast Friday night into Saturday as a strong upper
disturbance dips SE across the mid-atlantic states.

Aviation 18z Tuesday through Sunday
As of 18z... Expect some residual MVFR ceilings this afternoon as
a more diffuse stratus layer continues to hover across the area.

Once again the coastal terminals have more cloud cover. The
moisture will continue to diminish this evening and overnight
and no ifr ceilings are expected. Mixing of the boundary layer
will once again preclude fog formation.

Extended outlook... MVFR ceilings may linger redevelop at the
coastal terminals Wed night, mainly kilm. Wind gusts at kilm
may gust to 15 to 20 kt.

Near term through tonight ...

as of 1015 am Tuesday... No changes to the coastal waters
forecast this morning. Rugged condtions continue. Previous
discussion follows:
gusty northerly winds this morning will gradually back to
northwest as hurricane maria passes well east of the area. Sca
headline continues for all zones, mainly due to swells from the
storm. In addition, wind speeds across nc waters will remain in
the 20-25 kt range through the end of the period. Later today
and tonight maria will be northeast of the area and in the
process of moving away from the waters. Despite this, swells
above SCA thresholds will likely continue through the end of the
period. Nearshore sc waters may start to see seas dropping
below 6 ft later tonight but the majority of the waters will
remain in the 6 to 10 ft range with potential for up to 15 ft
across nc zones near 20 nm. No tstms over the 0-20 nm waters
this period but a few brief showers possible Wednesday north of
figure 8 island is possible.

Short term Wednesday through Thursday night ...

as of 3 am Tuesday... SCA in large seas and NW winds 20-25 kt
starts Wednesday off rough, but into Thursday vast improvement
is expected as maria not only weakens but begins to accelerate
away from the east coast. Sea height recovery will require an
sca likely all of Wednesday before headlines are likely dropped
sometime Thursday. N-nw winds will prevail all of this period
although the wave-height trend is a subsiding one. Seas 5-9 feet
Wednesday will drop to 3-5 feet during the day Thursday in
fading E swell, diminishing NW wind-seas, and easing NE fresh
swell or 'mature wind-seas'. A myriad of wave trains in the mix
but overall heights dropping in each of the partitioned waves.

Long term Thursday through Saturday ...

as of 3 pm Monday... Expect gradually improving conditions over
the waters as maria moves well northeast into the central
atlantic and a weak pressure gradient takes its place. Do not
expect any warnings or advisories during the long term. Highest
winds and seas will be on Thursday for our nc coastal waters,
with 10 to 15 kt winds and 3 to 5 ft seas. These conditions will
improve, with seas in the 2 to 4 ft range and winds of only
around 10 kts throughout by evening.

Ilm watches warnings advisories
Sc... High rip current risk until 9 pm edt this evening for scz054-

Nc... High rip current risk until 9 pm edt this evening for ncz106-

Marine... Small craft advisory until 8 pm edt Wednesday for amz250-252-


near term... Iii shk
short term... Mjc
long term... Rek
aviation... Shk

Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
MROS1 - 8661070 - Springmaid Pier, SC 6 mi40 min 1009.9 hPa
NIWS1 - North Inlet-Winyah Bay Reserve, SC 25 mi73 min NNW 8 77°F 1011 hPa71°F
SSBN7 30 mi118 min 2 ft
41024 - Sunset Nearshore (SUN 2) 30 mi50 min N 12 G 16 80°F 79°F1009.4 hPa

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, SC4 mi62 minN 1410.00 miMostly Cloudy82°F72°F72%1010.8 hPa
Conway Horry County Airport, SC11 mi63 minN 47.00 miOvercast79°F71°F79%1011.2 hPa
North Myrtle Beach Grand Strand Airport, SC17 mi65 minN 9 G 1610.00 miPartly Cloudy83°F71°F67%1010.4 hPa

Wind History from MYR (wind in knots)
Last 24hrN11N13
1 day agoNE14N14N11NE12N9N6N5N7N6N6NE9NE9NE11NE11NE11NE8NE9NE9N7N6N9N11N13N12
2 days agoSE7SE8SE7SE8SE5E6E6E6E5NE5--N6N5N6N7NE9NE8NE8N8NE9NE9N14NE14

Tide / Current Tables for Socastee Bridge, South Carolina
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Socastee Bridge
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Tue -- 03:53 AM EDT     2.09 feet High Tide
Tue -- 07:07 AM EDT     Sunrise
Tue -- 11:15 AM EDT     0.82 feet Low Tide
Tue -- 12:55 PM EDT     Moonrise
Tue -- 04:35 PM EDT     2.27 feet High Tide
Tue -- 07:06 PM EDT     Sunset
Tue -- 11:31 PM EDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

Tide / Current Tables for Myrtle Beach, South Carolina
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Myrtle Beach
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Tue -- 06:03 AM EDT     0.99 feet Low Tide
Tue -- 07:06 AM EDT     Sunrise
Tue -- 12:46 PM EDT     5.14 feet High Tide
Tue -- 12:55 PM EDT     Moonrise
Tue -- 06:45 PM EDT     1.31 feet Low Tide
Tue -- 07:06 PM EDT     Sunset
Tue -- 11:31 PM EDT     Moonset
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 (13,3,4,5)
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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.