Tuesday, December11, 2018 L-36.com


Marine Weather and Tides
Meggett, 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 7:11AMSunset 5:15PM Tuesday December 11, 2018 1:19 PM EST (18:19 UTC) Moonrise 10:34AMMoonset 9:12PM Illumination 17% Phase: Waxing Crescent; Moon at 4 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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AMZ330 Charleston Harbor- 1215 Pm Est Tue Dec 11 2018
This afternoon..NW winds 10 kt.
Tonight..W winds 5 to 10 kt.
Wed..W winds 5 kt.
Wed night..Variable winds 5 kt.
Thu..Variable winds 5 kt.
Thu night..E winds 10 kt. A chance of showers.
Fri..S winds 10 to 15 kt. Showers with a slight chance of tstms.
Fri night..SW winds 10 to 15 kt. Showers likely.
Sat..W winds 10 to 15 kt. A slight chance of showers.
Sat night..W winds 10 to 15 kt. Mariners are reminded that winds and waves higher in and near tstms. Unless otherwise noted, waves 1 foot or less. Charleston harbor water temperature 53 degrees.
AMZ300 1215 Pm Est Tue Dec 11 2018
Synopsis for the coastal waters of south coastal south carolina and north coastal georgia.. High pressure will prevail through Thursday. A storm system will affect the area Thursday night into Saturday morning, followed by another area of high pressure.


7 Day Forecast for Marine Location Near Meggett, SC
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location: 32.7, -80.28     debug


Area Discussion for - Charleston, SC
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Fxus62 kchs 111732
afdchs
area forecast discussion
national weather service charleston sc
1232 pm est Tue dec 11 2018

Synopsis
High pressure will prevail through Thursday. A storm system
will affect the area Thursday night into Saturday morning,
followed by another area of high pressure.

Near term through tonight
No changes with this update as everything remains on track.

Rest of today: the sharp mid upper level trough will continue
moving off the coast this afternoon, with northwest flow
prevailing as ridging builds eastward. At the surface, high
pressure along the gulf coast will gradually shift eastward.

Sunny skies are expected, allowing highs to reach the low to
mid 50s.

Tonight: surface high pressure will draw closer and settle
across the florida, georgia, alabama area by late tonight.

Clear skies should prevail until very late when a few cirrus
approach from the west. Expect a cold night with lows below
freezing for areas away from the immediate coast.

Short term Wednesday through Friday
Wednesday will be dry with high temps in the mid upper 50s as
deep layered high pressure prevails. Temperatures will warm
several degrees by Thursday as the surface high shifts east and
southerly flow develops. A few showers will be possible along
the ga coast late in the day as an upper shortwave spurs a weak
coastal trough to develop off the ga coast.

A powerful closed upper low will move into the ARKLATEX region
late Thursday night, spreading a large area of vorticity energy
into the southeast. Southerly 0-6 km flow will steadily
strengthen Thursday night and Friday, with the resultant theta-e
advection pushing pwats to 1.5-1.8" by midday Friday. Thursday
night should see a steady increase in rain shower coverage due
to strong isentropic ascent along and north of a warm front
bisecting the area w-e. We are showing widespread showers and a
few thunderstorms on Friday as several weak surface lows move
through the area ahead of a cold front Friday evening. Given the
unseasonably high pwats and deep forcing, many areas could pick
up 1-2" of rain by Friday evening.

Long term Friday night through Tuesday
Models have come into better agreement with the timing of the
cold front, now showing it moving offshore late Friday night.

Downslope flow will maintain high temps around 60 through Monday
before a reinforcing cold front brings some cooler weather by
Tuesday.

Aviation 18z Tuesday through Sunday
18z tafs:VFR.

Extended aviation outlook: MVFR or lower conditions are likely
Thursday night through Friday night as a storm system affects
the area.

Marine
Today through tonight: high pressure will gradually draw closer
to the area today, and northwest flow will prevail. Wind speeds
will top out in the 15-20 knot range for the most part with
some gusts to 25 knots in the outer waters. Overnight, winds
will drop off a bit as the gradient weakens, becoming 10-15
knots. Seas will be 2-4 ft in the nearshore waters today, with
some 5 footers possible near the 20 nm line in the charleston
county waters. Overnight, nearshore seas will be in the 1-3 ft
range. For the outer waters 4-6 ft seas will continue through
the evening dropping off to 3-5 ft late. The small craft
advisory for the outer georgia waters continues through
midnight.

Fairly quiet marine weather expected Tuesday through Thursday
as high pressure persists. Increasing southerly flow ahead of a
cold front Thursday night through Friday will likely require
small craft advisories for most waters. Advisory conditions
likely to persist into Saturday night or Sunday behind the cold
front as fairly strong westerly winds occur.

Chs watches warnings advisories
Ga... None.

Sc... None.

Marine... Small craft advisory until midnight est tonight for amz374.

Near term...

short term...

long term... Jrl
aviation...

marine...



Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
ACXS1 - ACE Basin Reserve, SC 13 mi94 min WNW 2.9 50°F 1025 hPa31°F
CHTS1 20 mi31 min NW 7 G 13 53°F 54°F1022.7 hPa
FBIS1 - Folly Island, SC 21 mi79 min NNW 8.9 G 13 49°F 1023.9 hPa (+0.0)30°F
41029 - Capers Nearshore (CAP 2) 35 mi71 min NNW 14 G 19 48°F 58°F1022.1 hPa
FPKG1 - 8670870 - Fort Pulaski, GA 57 mi37 min WNW 13 G 16 48°F 55°F1024.3 hPa

Wind History for Charleston, SC
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Charleston Executive Airport, SC15 mi24 minNNW 129.00 miFair52°F32°F47%1022.7 hPa
Charleston, Charleston Air Force Base, SC20 mi83 minNNW 1410.00 miFair49°F30°F50%1023.5 hPa
Walterboro Lowcountry Regional Airport, SC24 mi44 minNW 9 G 1410.00 miFair50°F26°F40%1024 hPa

Wind History from JZI (wind in knots)
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Last 24hrNW6NW4N4NW4NW5CalmNW3CalmNW4NW5NW5N5NW5NW6NW6
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1 day agoNW13
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N8NW9NW8NW9NW8N7NW7N6NW6NW7NW7NW6NW8NW6NW6NW8NW7NW5
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Tide / Current Tables for Lower Toogoodoo Creek, 2 mi. above entrance, South Carolina
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Lower Toogoodoo Creek
Click for Map
Tue -- 04:49 AM EST     0.54 feet Low Tide
Tue -- 07:13 AM EST     Sunrise
Tue -- 10:34 AM EST     Moonrise
Tue -- 11:55 AM EST     7.14 feet High Tide
Tue -- 05:15 PM EST     Sunset
Tue -- 05:31 PM EST     0.78 feet Low Tide
Tue -- 09:12 PM EST     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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5.953.62.10.90.61.12.33.85.26.26.97.16.65.33.620.90.91.62.8455.7

Tide / Current Tables for Charleston Harbor Entrance, South Carolina Current
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Charleston Harbor Entrance
Click for Map
Tue -- 01:32 AM EST     -1.78 knots Max Ebb
Tue -- 04:34 AM EST     0.00 knots Slack
Tue -- 07:11 AM EST     Sunrise
Tue -- 07:12 AM EST     1.54 knots Max Flood
Tue -- 10:32 AM EST     Moonrise
Tue -- 10:59 AM EST     -0.00 knots Slack
Tue -- 02:17 PM EST     -2.13 knots Max Ebb
Tue -- 05:13 PM EST     Sunset
Tue -- 05:24 PM EST     0.00 knots Slack
Tue -- 07:36 PM EST     1.41 knots Max Flood
Tue -- 09:10 PM EST     Moonset
Tue -- 10:54 PM EST     -0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-1.3-1.7-1.7-1.2-0.50.31.11.51.410.7-0-0.9-1.7-2.1-2-1.3-0.40.51.31.40.90.5-0.1

Weather Map and Satellite Images
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wmap_A
GOES Local Image of Southeast    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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Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Charleston, SC (13,3,4,5)
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Ground Weather Radar Station Charleston, SC
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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.