Friday, January19, 2018

Marine Weather and Tides
Garden City, 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 7:17AMSunset 5:36PM Friday January 19, 2018 12:52 AM EST (05:52 UTC) Moonrise 8:55AMMoonset 8:05PM Illumination 6% Phase: Waxing Crescent; Moon at 2 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- 920 Pm Est Thu Jan 18 2018
Overnight..NW winds 10 to 15 kt, becoming W 10 kt. Seas 2 to 3 ft.
Fri..W winds 10 kt, becoming sw 10 to 15 kt in the afternoon. Seas 2 ft.
Fri night..W winds 10 to 15 kt. Seas 2 ft.
Sat..W winds 10 to 15 kt, becoming sw 10 kt in the afternoon. Seas 2 ft.
Sat night..W winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft.
Sun..NW winds 10 kt or less, becoming S in the afternoon. Seas 1 to 2 ft.
Sun night..SE winds 10 kt or less. Seas 1 to 2 ft.
Mon..SE winds 10 kt, becoming S 10 to 15 kt. Seas 1 to 2 ft, then 2 to 4 ft. A chance of showers.
Tue..W winds 10 to 15 kt, becoming nw 10 kt. Seas 2 to 4 ft.
AMZ200 920 Pm Est Thu Jan 18 2018
Synopsis for coastal waters from surf city north carolina to south santee river south carolina out to 20 nautical miles.. High pressure over the lower mississippi valley will slowly move east, reaching the southeast coast late Saturday, then moving offshore Sunday. A cold front will approach from the west Monday night, moving offshore during Tuesday.

7 Day Forecast for Marine Location Near Garden City, SC
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location: 33.58, -79     debug

Area Discussion for - Wilmington, NC
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Fxus62 kilm 190516
area forecast discussion
national weather service wilmington nc
1215 am est Fri jan 19 2018

High pressure will migrate across the southeast through the weekend
shifting off the coast by early next week, bringing a warming trend
and dry weather. A cold front will bring increasing rain chances
late Monday into Tuesday. Slightly cooler temperatures will follow
this front, but are expected to remain at or above seasonable levels.

Near term through Friday
As of 900 pm Thursday... Forecast is on track, although did allow
for more radiational cooling adjacent to the deeper snow pack to
our NW and n.

Arctic cold remains across the carolinas. Confluence aloft will
drive the expansion of the surface high E NE from the gulf
coast, and this occurs in conjunction with WAA aloft as ridging
blossoms from the sw. These two occurring together will cause
the gradient to slacken, and winds will decouple to near calm
tonight while backing to the W sw. With a very dry airmass in
place (pwats around 0.2 inches) and light winds, good
radiational cooling is expected. This produces widespread lows
of 22-25 degrees, with subtly warmer temps expected on the
immediate coast, and slightly cooler temps in the sheltered
pocosin swampy areas.

Temps will climb to more seasonable values on Friday as the high
shifts to produce SW surface winds and continued waa. There will
continue to be an inversion just atop the relatively cooler shallow
surface layer, so have again forecast on the cooler side of the
guidance envelope for highs on Friday, but expect maximum temps to
climb to 1-2 degrees either side of 55 beneath full sunshine.

Short term Friday night through Saturday night
As of 300 pm Thursday... A cutoff mid level low will meander
across the southeast through the period with little fanfare. In
fact, it will serve to enhance a warmup for the region with a
southwest flow. Still not anticipating any precipitation and few
clouds although some mid and high level moisture may stream by
late. Lows Saturday morning will be in the upper 20s inland to
lower 30s along the coast. Saturday afternoon will see a warmup
to sixty degrees and probably a little higher inland.

Long term Sunday through Thursday
As of 300 pm Thursday... Mid upper level trough axis will shift off
the SE CONUS Sunday, along with associated mid-level cloudiness.

This will set the stage for a period of above normal temps to
continue through Wednesday ahead of a cold front. Moisture will
begin to return in low-level southerly flow Monday, with the
possibility of some showers advecting in off the ocean during the
day. Consensus on timing of the frontal passage appears to be
Tuesday morning, and that will coincide with the highest pops during
the period. Models suggest there will be little cold air arriving
immediately behind the front, with temperatures on Tuesday still
rising to around 60. They will, however, drop back into the 50s for
Thursday due to height falls and surface winds becoming more

Aviation 06z Friday through Tuesday
As of 06z...VFR conditions through the forecast period. Light
and variable to near calm winds tonight will generally remain
out of the W to SW picking up to 5 to 8 kt into this afternoon.

Extended outlook...VFR except for possible MVFR in scattered showers
Monday into early Tuesday.

Near term through Friday ...

as of 900 pm Thursday... Latest buoy observations show NW winds
continuing, but with speeds easing to 10-15 kt. Wind direction
will remain from the NW through tonight as high pressure expands
eastward from the gulf coast, before gradually transitioning to
the SW during Friday. As the high ridges towards the area, the
gradient will initially relax allowing wind speeds to fall to
around 10 kt overnight, before increasing back to 10-15 kt on
Friday. Wave heights of 2-4 ft will gradually subside to 2-3 ft
by Friday, with the 9 sec E NE swell gradually decaying into
Friday as a SW wind wave amplifies.

Short term Friday night through Saturday night ...

as of 300 pm Thursday... Expect a southwest flow of 10-15 knots
across all waters through the period as high pressure resides to
the south and the southern extension of a broad cyclonic flow
to the north drive wind direction and speeds. Significant seas,
lacking any stronger winds or robust swell components will be
2-4 feet.

Long term Sunday through Tuesday ...

as of 300 pm Thursday... Winds Sunday look to be light and
variable as high pressure drifts across the waters. Weak
southeasterly flow will begin Sunday night and increase to 15-20
knots by Tuesday night ahead of a cold front. Scattered showers
will be possible Monday moving south to north, with increasing
coverage along the cold front, which is expected to move off the
coast Tuesday morning. An offshore wind after FROPA on Tuesday
looks to be relatively weak, generally 10 knots or less, in a
relaxed gradient.

Ilm watches warnings advisories
Sc... None.

Nc... None.

Marine... None.

Synopsis... Rjd jdw
near term... Jdw
short term... Shk
long term... Crm
aviation... Rgz

Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
MROS1 - 8661070 - Springmaid Pier, SC 7 mi53 min 1028.8 hPa (+0.3)
NIWS1 - North Inlet-Winyah Bay Reserve, SC 19 mi68 min W 4.1 35°F 1026 hPa21°F
41024 - Sunset Nearshore (SUN 2) 33 mi45 min WNW 7.8 G 9.7 39°F 1025.4 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, SC8 mi57 minN 010.00 miFair31°F19°F61%1026.5 hPa
Conway Horry County Airport, SC18 mi58 minN 010.00 miFair27°F23°F86%1026.1 hPa
North Myrtle Beach Grand Strand Airport, SC22 mi60 minSW 310.00 miFair30°F19°F64%1025.7 hPa

Wind History from MYR (wind in knots)
Last 24hrNW10NW13
1 day agoCalmCalmCalmCalmCalmCalmN3CalmCalmE10SE9SE4CalmN7NW9NW10NW8NW7NW9NW14
2 days agoCalmNW3CalmCalmN4N3N3N4N5E4N44S5SE8SE7SE7S4S3CalmCalmN3CalmCalmCalm

Tide / Current Tables for Garden City Pier (ocean), South Carolina
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Garden City Pier (ocean)
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Fri -- 02:32 AM EST     -0.15 feet Low Tide
Fri -- 07:19 AM EST     Sunrise
Fri -- 08:44 AM EST     5.18 feet High Tide
Fri -- 08:54 AM EST     Moonrise
Fri -- 03:05 PM EST     -0.08 feet Low Tide
Fri -- 05:34 PM EST     Sunset
Fri -- 08:04 PM EST     Moonset
Fri -- 08:50 PM EST     4.31 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

Tide / Current Tables for Little Bull Creek entrance, Bull Creek, Waccamaw River, South Carolina
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Little Bull Creek entrance
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Fri -- 12:46 AM EST     2.16 feet High Tide
Fri -- 07:19 AM EST     Sunrise
Fri -- 07:35 AM EST     -0.08 feet Low Tide
Fri -- 08:55 AM EST     Moonrise
Fri -- 01:17 PM EST     2.49 feet High Tide
Fri -- 05:35 PM EST     Sunset
Fri -- 08:05 PM EST     Moonset
Fri -- 08:15 PM EST     -0.03 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 (0,6,7,8)
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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 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.