Monday, August21, 2017

Marine Weather and Tides
Little River, 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 6:41AMSunset 7:55PM Monday August 21, 2017 11:33 PM EDT (03:33 UTC) Moonrise 5:24AMMoonset 7:00PM Illumination 0% Phase: New Moon; Moon at 29 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- 1021 Pm Edt Mon Aug 21 2017
Overnight..S winds 10 kt or less. Seas 2 ft. A slight chance of showers.
Tue..W winds 10 kt or less...becoming sw in the afternoon. Seas 2 ft. A slight chance of showers and tstms.
Tue night..SW winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 4 ft. A slight chance of showers and tstms.
Wed..SW winds 10 to 15 kt with gusts up to 20 kt. Seas 3 ft. A chance of showers and tstms.
Wed night..SW winds 10 to 15 kt with gusts up to 20 kt. Seas 3 ft. A chance of showers and tstms.
Thu..SW winds 10 kt. Seas 2 to 3 ft. A chance of showers and tstms.
Thu night..SE winds 10 kt...becoming ne after midnight. Seas 2 ft. A chance of showers and tstms.
Fri..NE winds 10 to 15 kt...increasing to 15 to 20 kt. Seas 2 to 3 ft...building to 2 to 4 ft. A chance of showers and tstms through the day.
Sat..NE winds 15 to 20 kt. Seas 3 to 5 ft. Winds and seas higher in and near tstms.
AMZ200 1021 Pm Edt Mon Aug 21 2017
Synopsis for coastal waters from surf city north carolina to south santee river south carolina out to 20 nautical miles.. Weak high pressure will hold over the waters through Tuesday. A moderately strong cold front will cross the coast late Wednesday night into Thursday morning. Canadian high pressure will build in late in the week.

7 Day Forecast for Marine Location Near Little River, SC
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location: 33.86, -78.64     debug

Area Discussion for - Wilmington, NC
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Fxus62 kilm 212355
area forecast discussion
national weather service wilmington nc
755 pm edt Mon aug 21 2017

High pressure will expand across the area from the western
atlantic through Wednesday, allowing the heat and high humidity
to continue. A cold front will track across the eastern
carolinas from the northwest late Wednesday night thru Thursday.

Canadian high pressure will build in behind the front bringing
drier and breezier weather with slightly below normal
temperatures for the weekend.

Near term through Tuesday
As of 8 pm Monday... A few spot showers are gradually fading with
the sunset. Expect a dry overnight period with fog developing
after midnight. Only minor tweaks made to the forecast with the
latest update. Previous discussion follows:
although the area is primarily under the influence of mid level
ridging, there is a slight deformation zone and surface
troughing residing offshore that is sparking convection. This
will continue through the afternoon hours and subside this
evening. There may be another diurnal increase over the waters.

The same elements will be in play Tuesday although with moisture
profiles a little drier, the coverage should be less. No
surprises in temperatures with another night of lower to middle
70s and highs Tuesday from the upper 80s along the coast to
lower 90s inland.

Short term Tuesday night through Wednesday night
As of 300 pm Monday... Mid to upper level ridge will be sprawled
south and east of forecast area tues night into wed. A bit of
shortwave energy riding up around the ridge from the south will
act to enhance localized convection along piedmont trough and
sea breeze front into tues eve. The westerly steering flow will
push any debris clouds or storms toward the coast in the
evening. Expect a lull through the night into early wed, but a
cold front will reach into the carolinas on Wed and expect
trough to push east and any convection once again to move toward
the coast in a westerly push. Convective activity ahead of the
front will increase into Wed evening as mid to upper trough digs
down from the north pushing the front east. Plenty of warm air
and moisture ahead of the front combined with dynamics aloft
could lead to stronger storms into late Wed and Wed night as
front marches east. Expect boundary to be right near i-95
corridor by thurs at daybreak. Temps will be in the 70s
overnight and 90 to 94 most places Wed aftn. Head index values
will reach around 100 degrees in a continued hot and humid air

Long term Thursday through Monday
As of 300 pm Monday... The extended period is initiated with a
frontal boundary along the coast, pushed offshore by canadian
high pressure by Thursday night. The seasonably strong canadian
anticyclone will continue to press sse into the area through the
weekend, offering a dose of a very early fall feel here with
slight cooling and drying. As the strong high interacts with low
pressure development off florida, a stiff NE flow should
prevail much of this period into early next week. This will keep
maximums moderated, and notably milder minimums at and near the
coast compared to the interior. Highest pop values is the very
beginning of the extended on Thursday, while low temperatures
this weekend dip into the 60s in many locations inland. Because
of upper winds, any tropical formation off florida this weekend
should remain east and offshore of the carolinas through early
next week.

Aviation 00z Tuesday through Saturday
As of 00z... Other than the very isolated spot shower,
convection has ended for the evening. Good confidenceVFR all
terminals through midnight or a couple hours beyond that.

Moderate confidence all terminals will experience periods of ifr
restrictions for vsby in fog in the early morning hours of
Tuesday. Isolated to scattered convection will likely develop
Tuesday afternoon.

Extended outlook... Diurnal showers tstms expected Wednesday
afternoon, becoming more numerous Wednesday night and Thursday
with frontal passage. Convective potential will decrease Friday
as the front moves south of the area.

Near term through Tuesday ...

as of 8 pm Monday... Latest obs show SE winds of 5 to 10 kts with
only 2 ft of seas. This fits in well with the forecast as issued
this afternoon. No changes were made with the latest update.

Previous discussion follows:
conditions will remain quiet across the coastal waters with
very little in the way of forcing for the wind fields. Expect an
east to southeast flow of ten knots or less tonight through
Tuesday. There are some indications of slightly stronger winds
(10-15 knots) late in the period. Significant seas will continue
to hover around two feet.

Short term Tuesday night through Wednesday night ...

as of 300 pm Monday... Winds will increase into tues eve up 10
to 15 kts as gradient tightens between high pressure to the east
and trough to the west. Winds will lighten toward daybreak wed
but will increase again with an approach of a cold front wed
night into early thurs. Expect seas to reach up near 4 ft in
outer waters tues eve with a slight drop Wed morning and rise
again Wed night. Overall expect 2 to 4 ft seas with a longer
period, up to 10 sec, SE swell mixing with the shorter period
wind waves.

Long term Thursday through Saturday ...

as of 300 pm Monday... This period will become fraught with
challenges for marine activities as a seasonably strong canadian
high forces a cold front across the coast Thursday. Aside from
tstms Thursday on the 0-20 nm waters, NE winds will begin to
increase Thursday night and Friday as the canadian high presses
sse over the waters, and a small craft advisory may be needed
for 25 kt gusts and 6 foot seas offshore. The strong onshore
flow will likely persist into Saturday, as the high interacts
with deepening low pressure off florida, and thus maintaining
rough conditions into the weekend.

Ilm watches warnings advisories
Sc... None.

Nc... None.

Marine... None.

Synopsis... 99
near term... Rek shk
short term... Rgz
long term... Mjc
aviation... Rek
marine... Mjc rek rgz shk

Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
SSBN7 8 mi153 min 1 ft
41024 - Sunset Nearshore (SUN 2) 8 mi85 min S 5.8 G 9.7 83°F 85°F1021.1 hPa
MROS1 - 8661070 - Springmaid Pier, SC 20 mi45 min 1020.6 hPa
41108 34 mi33 min 85°F2 ft
WLON7 44 mi45 min 79°F 85°F1021.4 hPa
NIWS1 - North Inlet-Winyah Bay Reserve, SC 46 mi108 min S 2.9 82°F 1021 hPa76°F

Wind History for Springmaid Pier, SC
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1 day
2 days

Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
North Myrtle Beach Grand Strand Airport, SC5 mi40 minS 610.00 miPartly Cloudy81°F75°F85%1021.2 hPa
Myrtle Beach Air Force Base, SC19 mi1.7 hrsSSE 610.00 miA Few Clouds81°F75°F84%1021.7 hPa

Wind History from CRE (wind in knots)
Last 24hrS4S4CalmCalmCalmNE4CalmS7N3N3NE5E8NE6E10E9NE4SE8SE9SE5SE5SE5S5S4S6
1 day agoSW11SW9SW6SW4SW7SW4W3W3W33CalmCalmSE6SE7S6S7S7SE5SE8SE5SE4SE56S6
2 days agoSW11SW12SW10SW8SW10SW10SW8SW7SW7W93S8S11S14S17S16W12

Tide / Current Tables for Nixon Crossroads, South Carolina
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Nixon Crossroads
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Mon -- 03:00 AM EDT     -0.17 feet Low Tide
Mon -- 06:24 AM EDT     Moonrise
Mon -- 06:40 AM EDT     Sunrise
Mon -- 08:40 AM EDT     4.55 feet High Tide
Mon -- 02:31 PM EDT     New Moon
Mon -- 03:10 PM EDT     -0.43 feet Low Tide
Mon -- 07:53 PM EDT     Sunset
Mon -- 08:00 PM EDT     Moonset
Mon -- 09:04 PM EDT     5.21 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

Tide / Current Tables for Sunset Beach Pier, Atlantic Ocean, North Carolina
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Sunset Beach Pier
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Mon -- 01:43 AM EDT     -0.62 feet Low Tide
Mon -- 06:23 AM EDT     Moonrise
Mon -- 06:40 AM EDT     Sunrise
Mon -- 07:40 AM EDT     5.33 feet High Tide
Mon -- 01:49 PM EDT     -0.87 feet Low Tide
Mon -- 02:31 PM EDT     New Moon
Mon -- 07:53 PM EDT     Sunset
Mon -- 07:59 PM EDT     Moonset
Mon -- 08:01 PM EDT     6.08 feet High 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 Mid-Atlantic    EDIT

Wind Forecast for Wilmington, NC (23,6,7,8)
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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 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 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.