Monday, December18, 2017

Marine Weather and Tides
George, 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 7:14AMSunset 5:12PM Monday December 18, 2017 4:08 AM EST (09:08 UTC) Moonrise 7:21AMMoonset 5:50PM Illumination 0% Phase: New Moon; Moon at 0 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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AMZ256 Coastal Waters From Murrells Inlet To South Santee River Sc Out 20 Nm- 322 Am Est Mon Dec 18 2017
Today..SW winds 10 kt, increasing to 10 to 15 kt late. Seas 1 to 2 ft, then 2 ft this afternoon. A slight chance of rain this morning, then a chance of rain this afternoon. Patchy fog this afternoon.
Tonight..W winds 10 to 15 kt. Seas 2 ft. A chance of rain. Areas of fog.
Tue..W winds 10 kt. Seas 2 ft in the morning, then 1 to 2 ft.
Tue night..SW winds 10 kt, becoming W 10 to 15 kt after midnight. Seas 1 to 2 ft. A slight chance of rain.
Wed..SW winds 10 to 15 kt with gusts up to 20 kt. Seas 1 to 2 ft, then 2 ft in the afternoon. A chance of rain.
Wed night..W winds 10 to 15 kt, becoming ne 15 to 20 kt after midnight. Seas 3 to 5 ft. Rain likely.
Thu..NE winds 15 to 20 kt, diminishing to 10 to 15 kt. Seas 3 to 5 ft.
Fri..E winds 10 kt, becoming s. Seas 2 to 3 ft.
AMZ200 322 Am Est Mon Dec 18 2017
Synopsis for coastal waters from surf city north carolina to south santee river south carolina out to 20 nautical miles.. High pressure will move offshore with a weak pressure gradient continuing for the next couple of days. Low pressure developing along a cold front will cross the area Wednesday evening.

7 Day Forecast for Marine Location Near George, SC
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location: 33.37, -79.27     debug

Area Discussion for - Wilmington, NC
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Fxus62 kilm 180732
area forecast discussion
national weather service wilmington nc
232 am est Mon dec 18 2017

Mild air will surge into the region Monday and Tuesday ahead of
a low pressure system that will approach from the west. This
system will bring moderate rain Wednesday and Wednesday night.

High pressure will build in Thursday and then weaken on Friday
as a cold front slowly approaches from the west.

Near term through tonight
As of 3 am Monday... A diffuse warm air advection pattern will
continue across the area through the near term. The mid level
flow will be mostly west to southwest until late tonight when a
slight shortwave moves across. This will be critical as it will
switch the wind direction to offshore. As for today there is
little in the way of forcing and most guidance keeps pops to the
south of the area and thus I have walked back the inherited
values. Mostly cloudy skies will continue across the area.

Guidance has been insistent on sea fog developing on the better
defined southwest flow the aforementioned trough develops. I
have added this to the forecast for late this afternoon and
through the evening hours until the weak offshore flow develops.

I did undercut guidance for temperatures today via the moisture
laden conditions. On a similar note I increased values for
Tuesday morning lows.

Short term Tuesday through Wednesday night
As of 3 am Monday... A mild and dry Tuesday will give way to a
wet and chillier Wednesday as a frontal system emerging from the
deep south impacts the area. Temperatures on Tuesday will be
elevated above normal as a bubble high north of a dissipating
frontal system brings a relatively warm swly flow to the region.

Highs will be mainly in the upper 60s most places. Deep-layer
moisture increases overnight as an upper short wave drives a
developing frontal system east across the carolinas. Extensive
cloud cover and good rain chances will keep highs topped in the
lower to mid 60s Wednesday. Pops will be likely on Wednesday and
Wednesday night, with rain likely tapering off by daybreak on
Thursday as the frontal system slides south of the area.

Long term Thursday through Sunday
As of 3 pm Sunday... A front could bring a healthy dose of rain
high as pressure wedges in from the north on Thursday. This
wedge will weaken but largely remain in the carolinas, allowing
for a moderation towards warmer temperatures. It then lifts out
by Saturday clearing the path for warm and moist advection ahead
of the next cold front, previously slated for arrival Saturday
but it now appears to be up to two days slower.

Aviation 07z Monday through Friday
As of 06z... Not the best of aviation conditions for this cycle
as a moisture laden atmosphere with little forcing will be in
place. The big concern is sea fog which the guidance has been
pointing to the past several cycles across the coastal
terminals. This will develop late this afternoon and this
evening. I have prevailing ifr conditions to address. Until then
ceilings drop to MVFR across most areas.

Extended outlook... Unsettled weather Monday through Thursday
morning as a near stationary front moves in and out of the region.

Near term through tonight ...

as of 3 am Monday... .Weak wind fields will continue across the
coastal waters through the period. However a better defined
southwest flow will develop during the day which will be a
change from the erratic nature of the wind direction from the
past day or so. Speeds remain ten knots or below. By early
Tuesday a weak surface trough passing by will switch the winds
to an offshore component. Sea fog is expected to develop late
this afternoon and impact all waters to some degree until the
wind shift occurs. Overall seas will be 1-2 feet with perhaps a
few three footers late.

Short term Tuesday night through Wednesday night ...

as of 3 am Monday... A slack pressure gradient will bring benign
conditions to the waters into the daylight hours of Wednesday
with winds of around 10 kts and seas of right around 2 ft. A
frontal system slowly sliding south across the waters will bring
periods of rain to the coastal waters on Wednesday. Conditions
deteriorate Wednesday night in the wake of this system with ne
winds picking up to 20 kts or more and seas building up to 6 ft
in places. A small craft advisory may be required for Wednesday

Long term Thursday through Friday ...

as of 3 pm Sunday... With a front stalled over the area but at
an uncertain latitude there is some uncertainty related to
Wednesday's wind forecast. There is also some uncertainty
regarding wind speed. For now though the current solution
favored keeps the front to our north and allows an approaching
wave to ramp up wind speeds later in the day Wednesday. Once
this low moves by high pressure will nose in from the north and
turn winds decidedly ne. A short-lived advisory is tough to
rule out either ahead or behind this system, or both given the
aforementioned uncertainties. As the high weakens heading into
Friday looking for decreasing and veering winds.

Ilm watches warnings advisories
Sc... None.

Nc... None.

Marine... None.

Synopsis... mbb
near term... Shk
short term... Rek
long term... mbb
aviation... Shk
marine... Rek mbb shk

Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
NIWS1 - North Inlet-Winyah Bay Reserve, SC 5 mi84 min Calm 54°F 1022 hPa52°F
MROS1 - 8661070 - Springmaid Pier, SC 27 mi51 min 1025 hPa
41029 - Capers Nearshore (CAP 2) 43 mi61 min SSE 1.9 G 1.9 53°F 55°F1021.7 hPa
FBIS1 - Folly Island, SC 58 mi69 min S 1.9 G 1.9 56°F 1022.5 hPa (+0.0)53°F

Wind History for Springmaid Pier, SC
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1 day
2 days

Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Georgetown County Airport , SC5 mi74 minN 010.00 miOvercast54°F51°F94%1022.3 hPa

Wind History from GGE (wind in knots)
Last 24hrCalmNW6CalmCalmCalmCalmCalmCalmCalmS3SE3SE3S3CalmCalmS4CalmCalmCalmCalmCalmCalmCalmCalm
1 day agoNW3N4N3CalmCalmNE7NE7NE5CalmSE5E6SE5SE4CalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalm
2 days agoCalmCalmCalmCalmCalmCalmSW5SW6SW7W9W9W6W5SW6W5W4W5W7W6N8NW3CalmCalmCalm

Tide / Current Tables for Georgetown, Sampit River, South Carolina
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Mon -- 01:31 AM EST     New Moon
Mon -- 03:35 AM EST     -0.01 feet Low Tide
Mon -- 07:15 AM EST     Sunrise
Mon -- 07:20 AM EST     Moonrise
Mon -- 09:18 AM EST     4.16 feet High Tide
Mon -- 04:17 PM EST     0.07 feet Low Tide
Mon -- 05:12 PM EST     Sunset
Mon -- 05:49 PM EST     Moonset
Mon -- 09:22 PM EST     3.48 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

Tide / Current Tables for Hagley Landing, Waccamaw River, South Carolina
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Hagley Landing
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Mon -- 01:31 AM EST     New Moon
Mon -- 04:19 AM EST     -0.01 feet Low Tide
Mon -- 07:15 AM EST     Sunrise
Mon -- 07:19 AM EST     Moonrise
Mon -- 09:51 AM EST     3.92 feet High Tide
Mon -- 05:01 PM EST     0.07 feet Low Tide
Mon -- 05:11 PM EST     Sunset
Mon -- 05:49 PM EST     Moonset
Mon -- 09:55 PM EST     3.28 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 Southeast    EDIT

Wind Forecast for Wilmington, NC (4,6,7,8)
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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.