Thursday, November15, 2018 L-36.com


Marine Weather and Tides
Charleston, 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 6:49AMSunset 5:19PM Thursday November 15, 2018 10:15 PM EST (03:15 UTC) Moonrise 1:13PMMoonset 12:00AM Illumination 56% Phase: First Quarter Moon; Moon at 8 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- 1003 Pm Est Thu Nov 15 2018
Tonight..NW winds 15 kt with gusts to 20 kt.
Fri..NW winds 10 to 15 kt, diminishing to 5 to 10 kt in the afternoon.
Fri night..NW winds 5 kt.
Sat..NE winds 10 kt.
Sat night..NE winds 5 kt.
Sun..NE winds 10 kt. A slight chance of rain.
Sun night..N winds 5 to 10 kt. A slight chance of showers.
Mon..N winds 5 to 10 kt.
Mon night..N winds 5 to 10 kt.
Tue..N winds 5 to 10 kt.
Tue night..N winds 5 to 10 kt. Unless otherwise noted, waves 1 foot or less. Charleston harbor water temperature 64 degrees.
AMZ300 1003 Pm Est Thu Nov 15 2018
Synopsis for the coastal waters of south coastal south carolina and north coastal georgia.. Cool, dry high pressure will return through much of the weekend. High pressure will generally persist over the southeast states next week.


7 Day Forecast for Marine Location Near Charleston, SC
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location: 32.78, -79.93     debug


Area Discussion for - Charleston, SC
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Fxus62 kchs 152324
afdchs
area forecast discussion
national weather service charleston sc
624 pm est Thu nov 15 2018

Synopsis
Cool, dry high pressure will return through much of the
weekend. High pressure will generally persist over the
southeast states next week.

Near term until 6 am Friday morning
Cloud cover has been a little slower in eroding from the west-
southwest, so we have delayed any substantial clearing over ourr
south carolina counties until the mid and late evening hours,
leading to clear skies overnight. The georgia counties will
start the evening geneally partly cloudy, with skies to become
clear by midnight. Not yet sure if these changes will have
any bearing on low temps and or the frost coverage, so no
changes in those regards. Freeze warning remains in effect from
allendale to candler and bulloch starting at 3 am.

Previous discussion... Drier air is slowly working its way in
from the west but it will likely be early evening before the
overcast skies begin to erode from west to east. Most areas
should be clear by shortly after midnight. Strong cold air
advection will occur overnight, strengthening after midnight as
winds veer to nw. 12z models were considerably colder with
overnight lows. We nudged temps down 1-2 degrees which now
results in about two hours of 32 degree temperatures over far
inland ga sc zones. In collaboration with WFO cae and ffc we
issued a freeze warning for a handful of inland zones.

Short term 6 am Friday morning through Sunday
Surface high pressure will build into the area Friday and Saturday
and then shift northeast of the area by Sunday.

Friday: sinking motion in the wake of the strong system well to the
northeast of the area and downslope low level wind flow off the
southern appalachians will result in clear skies. A cold start, some
weak cold advection, and limited mixing due weak winds and a low sun
angle will result in highs being in the mid to upper 50s. An ideal
radiation cooling night is expected Friday night with light winds.

Generally went a bit cooler than mav and met guidance and closer to
the 00z ECMWF ensemble MOS means which indicate a decent threat for
frost except for areas near the coast and away from lake moultrie.

For now, expanded the patchy and scattered frost areas a bit further
south and east with this update, but not as far as might be needed.

Not explicitly forecast, but there could be a few areas in the west
that touch freezing late Friday night and early Saturday morning.

Frost advisories will be likely and freeze watches warnings will be
possible. Lows are forecast to range from the mid 30s far inland to
the lower and mid 40s near the coast.

Saturday and Sunday: despite a cool start, some warm advection,
abundant sunshine and better mixing will result in high
temperatures on Saturday rising to the mid 60s in most areas.

Clouds will begin to increase Saturday night as isentropic lift
along with increasing low level moisture commences. There could
be some light rain that moves inland from the ocean on Sunday
and included mention of a slight chance for rain generally
within 20 miles of the coast. Further inland, feel that rain
chances are too low to mention in the forecast. Despite more
cloud cover, warm advection and a warmer start to the day will
help high temperatures rise to the mid 60s in the northwest,
north, and along the coast in south carolina to the lower 70s
in the south away from the coast.

Long term Sunday night through Thursday
Dry weather will prevail through early next week as cooler high
pressure moves into the area. A weak area of low pressure may
develop offshore and cause a few showers mainly near the coast.

Temperatures should mostly stay near normal.

Aviation 00z Friday through Tuesday
MVFR ceilings at both ksav and kchs early this evening will
gradually give way to a return ofVFR conditions during the mid
and late evening, as low level moisture finally scours out and
the low level cyclonic flow becomes anticyclonic.

Extended aviation outlook: other than a very low threat for subVFR
conditions Sunday night and into Monday,VFR conditions should
prevail through Tuesday.

Marine
Cold advection will occur tonight, maintaining winds 15-20 kt
with some higher gusts. We held onto the small craft advisory
for charleston nearshore waters until 4 am due mainly to
lingering 6 ft seas though also better chances for some 25 kt
wind gusts. SCA for offshore ga waters continues into fri
morning.

Winds and seas will decrease Friday as high pressure builds in
and then generally light winds at or below 10 knots are expected
through Sunday. A weak reinforcing cold front will move through
the waters Sunday night and this will result in an uptick of
the winds generally into the 10 to 15 knot range later Sunday
night through Tuesday night with seas mainly from 2 to 4 feet
during this period.

Chs watches warnings advisories
Ga... Freeze warning from 3 am to 8 am est Friday for gaz087-088-099-
100.

Sc... Freeze warning from 3 am to 8 am est Friday for scz040.

Marine... Small craft advisory until 4 am est Friday for amz350.

Small craft advisory until 11 am est Friday for amz374.

Near term...

short term... Mte
long term... Rjb
aviation... Mte
marine...



Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
CHTS1 0 mi27 min NW 4.1 G 8 46°F 64°F1016.6 hPa
FBIS1 - Folly Island, SC 7 mi75 min W 5.1 G 8 46°F 1017 hPa (+1.1)41°F
41029 - Capers Nearshore (CAP 2) 16 mi67 min WNW 16 G 25 49°F 65°F1015.3 hPa
ACXS1 - ACE Basin Reserve, SC 32 mi90 min W 1 45°F 1017 hPa41°F
41033 43 mi67 min Calm G 0
41004 - EDISTO - 41 NM Southeast of Charleston, SC 48 mi25 min W 19 G 27 53°F 74°F6 ft1016.6 hPa51°F

Wind History for Charleston, SC
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Charleston Executive Airport, SC7 mi20 minN 07.00 miFair43°F41°F93%1016.9 hPa
Charleston, Charleston Air Force Base, SC10 mi19 minW 510.00 miA Few Clouds44°F39°F85%1016.4 hPa
Mount Pleasant Regional-Faison Field, SC11 mi40 minWNW 410.00 miFair45°F41°F87%1016.6 hPa

Wind History from CHS (wind in knots)
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Last 24hrNE14NE15
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1 day agoN3CalmN12N8NE7NE8NE12NE9N10N9NE13NE12NE10NE8NE12NE13NE10NE11
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2 days agoN3SE8SW3NW3NW5N8CalmCalmS3CalmN6NW5CalmSW3NW5NW6N6NW6NW5N6N10N6N10N6

Tide / Current Tables for Charleston, South Carolina
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Charleston
Click for Map
Thu -- 12:53 AM EST     4.60 feet High Tide
Thu -- 06:49 AM EST     Sunrise
Thu -- 06:59 AM EST     1.34 feet Low Tide
Thu -- 09:54 AM EST     First Quarter
Thu -- 01:13 PM EST     Moonrise
Thu -- 01:28 PM EST     5.21 feet High Tide
Thu -- 05:18 PM EST     Sunset
Thu -- 07:48 PM EST     1.24 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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4.54.64.33.72.92.11.61.31.62.43.34.24.85.25.14.73.82.921.41.21.72.53.4

Tide / Current Tables for Charleston Harbor Entrance, South Carolina Current
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Charleston Harbor Entrance
Click for Map
Thu -- 01:04 AM EST     -0.00 knots Slack
Thu -- 04:27 AM EST     -1.29 knots Max Ebb
Thu -- 06:49 AM EST     Sunrise
Thu -- 07:46 AM EST     0.00 knots Slack
Thu -- 09:54 AM EST     First Quarter
Thu -- 10:14 AM EST     1.15 knots Max Flood
Thu -- 01:12 PM EST     Moonrise
Thu -- 01:52 PM EST     -0.00 knots Slack
Thu -- 05:18 PM EST     Sunset
Thu -- 05:22 PM EST     -1.68 knots Max Ebb
Thu -- 08:36 PM EST     0.00 knots Slack
Thu -- 10:41 PM EST     1.17 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.50-0.6-1-1.3-1.2-0.9-0.40.10.71.110.80.5-0.1-0.8-1.3-1.7-1.6-1.1-0.50.311.1

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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Wind Forecast for Charleston, SC (22,6,7,8)
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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.