Friday, February22, 2019 L-36.com


Marine Weather and Tides
McClellanville, SC

Version 3.4
What's New / NOTES
10/6/2018 Colors of tide XTide graphs changed to emphasize that they were upgraded. See next note. Comments welcome.
10/4/2018 I have fixed XTide and updated the harmonic files. There were some name changes so you might have to click EDIT to find the new station name.

Sunrise 6:53AMSunset 6:11PM Friday February 22, 2019 6:52 AM EST (11:52 UTC) Moonrise 9:47PMMoonset 9:07AM Illumination 90% Phase: Waning Gibbous; Moon at 18 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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AMZ350 Waters From South Santee River To Edisto Beach Sc Out 20 Nm- 611 Am Est Fri Feb 22 2019
.dense fog advisory in effect until 10 am est this morning...
Today..S winds 5 kt, becoming E early this afternoon, then becoming ne 10 to 15 kt with gusts to 20 kt late. Seas 3 ft. A slight chance of showers this morning, then a chance of showers this afternoon. Areas of dense fog this morning, then patchy fog this afternoon. Vsby 1/4 nm or less this morning.
Tonight..NE winds 15 to 20 kt. Seas 4 to 5 ft. A slight chance of showers.
Sat..NE winds 10 to 15 kt. Seas 3 to 4 ft. A slight chance of showers in the morning.
Sat night..SE winds 5 to 10 kt, becoming S 10 to 15 kt with gusts to 20 kt after midnight. Seas 3 ft, building to 4 to 5 ft after midnight. A chance of showers.
Sun..SW winds 15 to 20 kt with gusts to 25 kt. Seas 4 to 6 ft. A slight chance of showers in the morning, then showers likely in the afternoon.
Sun night..W winds 15 kt, becoming nw after midnight. Seas 3 to 4 ft.
Mon..N winds 10 to 15 kt. Seas 3 to 4 ft.
Mon night..NE winds 5 to 10 kt. Seas 2 to 3 ft.
Tue..E winds 10 kt. Seas 3 ft.
Tue night..SE winds 5 to 10 kt. Seas 3 to 4 ft. A slight chance of showers.
AMZ300 611 Am Est Fri Feb 22 2019
Synopsis for the coastal waters of south coastal south carolina and north coastal georgia.. A backdoor cold front will slide south across the area through this evening, then shifting back north as a warm front late Saturday and and Saturday night. A cold front will then move through Sunday followed by high pressure into mid week. Low pressure will then likely affect the area late next week.


7 Day Forecast for Marine Location Near McClellanville, SC
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location: 33, -79.36     debug


Area Discussion for - Wilmington, NC
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Fxus62 kilm 221057
afdilm
area forecast discussion
national weather service wilmington nc
538 am est Fri feb 22 2019

Synopsis
Cool high pressure will build in from the north today before
moving offshore Saturday. Warmer weather is expected Sunday
ahead of a cold front, that will coast the coast during Sunday
evening. High pressure will build in through early next week.

Near term through Saturday
As of 333 am Friday... Temperature trends today will look like
nighttime traces, with falling air temperatures in wake of a
cold front amid moderate cold air advection. Dewpoints to drop
into the 40s with 10-meter winds peaking between 18z-00z, 11-13
knots sustained on average. The cooling into already saturated
air will result in occasional drizzle, while frontal convergence
helps to spur a few showers, and enhance isentropic lift aloft.

The low QPF pattern continues as stronger upper forcing remains
well N and W of the area, but a damp period today and tonight
with wetting expected, and favored from NW to SE respectively.

Max-t forecasts show a substantial gradient of temperatures due
to the front, middle 50s northern SE nc, to middle 60s interior
ne sc. Saturday over-running atop cool air damming, but again,
heavier rainfall to remain nw-n of the area, the enough to have
clouds and damp conditions, and occasional -ra dz due to the
near saturated air.

Short term Saturday night through Sunday night
As of 333 am Friday... Seemingly endless moisture laden pattern
will finally be on the move through the short term period. One
last (at least for a while) potent mid level storm system will
be moving through the middle mississippi valley which will push
a cold front through the area late Sunday into early Monday.

Decent pops with the front but most of the connection to the
gulf of mexico is waning and for now likely values will suffice.

Yet another very warm day Sunday but cooling off by Monday
morning.

Long term Monday through Thursday
As of 333 am Friday... Mostly dry through the first part of the
extended period with temperatures at or just above climatology.

A diffuse and broad system may bring the next chance of showers
to the area mid week on but the system doesn't look too
organized at this point and relatively low chance pops remain in
the forecast.

Aviation 12z Friday through Tuesday
As of 12z... Surface ridge wedge has set up once again with some
light showers overrunning the cool air. Look for ifr conditions to
prevail for most of the forecast period. A brief window of MVFR
conditions is possible this afternoon, becoming ifr once again this
evening.

Extended outlook... Front lingering in the area will lead to more ifr
cig and or vis into Saturday as another round of overrunning rain
develops. Sub-vfr will likely prevail early Sunday before another
cold front pushes through lifting toVFR late Sunday and Monday.

Marine
As of 333 am Friday... Roughening seas forthcoming in wake of a
cold front as NE winds increase to 20 kt, and seas near 6 feet
offshore and north of CAPE fear by late today. An SCA may be
needed, but will access sea heights for the daybreak updates to
see if SCA flags are needed. Residual SE swell will be overtaken
and masked by increasing shorter crest NE wind-seas today. This
will produce steep seas. Winds to ease Saturday, seas
recovering only slowly so expect heights of 4-5 ft offshore even
Saturday with periods of 6-7 seconds. Fog to plague the waters
this morning until drying later today, and a marine dense fog
advisory is posted this morning, thickest fog inshore.

The strongest winds and highest seas will occur ahead of
the cold front Sunday. A southwest flow of 20-25 knots will develop
for a good part of the day. Significant seas will eclipse small craft
criteria during this time as well. Beyond this high pressure will
build in but without strong cold air advection, the winds will be
somewhat modest, well below any flag criteria, same for seas.

Ilm watches warnings advisories
Sc... Dense fog advisory until 6 am est early this morning for
scz054-056.

Nc... Dense fog advisory until 6 am est early this morning for
ncz106>110.

Marine... Dense fog advisory until 7 am est this morning for amz250-252-
254-256.

Synopsis... Shk
near term... Mjc
short term... Shk
long term... Shk
aviation... 43


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
41029 - Capers Nearshore (CAP 2) 20 mi45 min SSE 3.9 G 5.8 58°F 56°F1020.2 hPa
NIWS1 - North Inlet-Winyah Bay Reserve, SC 26 mi68 min ENE 2.9 59°F 1020 hPa59°F
CHTS1 34 mi53 min Calm G 1.9 60°F 58°F1020.6 hPa (+0.6)
FBIS1 - Folly Island, SC 35 mi53 min Calm G 0 59°F 1020.9 hPa (+0.4)
41004 - EDISTO - 41 NM Southeast of Charleston, SC 37 mi43 min W 1.9 G 5.8 65°F1021.1 hPa

Wind History for Charleston, SC
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Georgetown County Airport , SC22 mi58 minN 00.25 miFog59°F59°F100%1020.7 hPa
Mount Pleasant Regional-Faison Field, SC24 mi58 minN 00.15 miFog63°F62°F100%1020.7 hPa

Wind History from GGE (wind in knots)
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Last 24hrCalm--CalmW4W8SW8W6
G14
W9S7S7SW10S3S6SW3S3SW4SW5CalmCalmCalmCalmCalmCalmCalm
1 day agoNE12NE8NE5N4NE4NE4W8NW3N6CalmN4NW4CalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalm
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Tide / Current Tables for Cape Romain, South Carolina
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Cape Romain
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Fri -- 03:36 AM EST     -0.90 feet Low Tide
Fri -- 06:53 AM EST     Sunrise
Fri -- 09:06 AM EST     Moonset
Fri -- 09:48 AM EST     5.38 feet High Tide
Fri -- 04:01 PM EST     -0.71 feet Low Tide
Fri -- 06:08 PM EST     Sunset
Fri -- 09:47 PM EST     Moonrise
Fri -- 10:19 PM EST     5.27 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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3.21.60.2-0.7-0.801.434.35.15.44.93.72.30.8-0.3-0.7-0.30.82.33.64.75.25.1

Tide / Current Tables for Five Fathom Creek entrance, South Carolina
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Five Fathom Creek entrance
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Fri -- 03:46 AM EST     -0.96 feet Low Tide
Fri -- 06:54 AM EST     Sunrise
Fri -- 09:07 AM EST     Moonset
Fri -- 10:04 AM EST     5.63 feet High Tide
Fri -- 04:11 PM EST     -0.76 feet Low Tide
Fri -- 06:09 PM EST     Sunset
Fri -- 09:48 PM EST     Moonrise
Fri -- 10:35 PM EST     5.51 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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3.720.5-0.7-0.9-0.21.22.84.25.25.65.34.22.71.2-0.1-0.7-0.50.623.54.65.45.4

Weather Map and Satellite Images
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wmap_A
GOES Local Image of    EDIT
NOTE: East coast views moved to GEOS-16. They are experimental and not well supported by NOAA so they may not be correct so be warned. This change required redoing a large amount of the GOES code. If the image you are expecting is not showing, please let me know. You may need to use the EDIT function to update your location.
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Wind Forecast for Wilmington, NC (6,6,7,8)
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Ground Weather Radar Station Wilmington, NC
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Disclaimer:
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.