Friday, November16, 2018 L-36.com


Marine Weather and Tides
Sullivan's Island, 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 6:50AMSunset 5:19PM Friday November 16, 2018 9:30 PM EST (02:30 UTC) Moonrise 1:48PMMoonset 12:14AM Illumination 66% Phase: Waxing Gibbous; Moon at 9 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- 854 Pm Est Fri Nov 16 2018
Tonight..NW winds 5 to 10 kt, becoming N after midnight.
Sat..NE winds 5 to 10 kt.
Sat night..NE winds 5 kt.
Sun..NE winds 5 to 10 kt. A slight chance of showers.
Sun night..NE winds 5 kt. A slight chance of showers.
Mon..N winds 5 to 10 kt.
Mon night..NW winds 5 kt.
Tue..N winds 5 to 10 kt.
Tue night..N winds 5 to 10 kt.
Wed..N winds 5 to 10 kt.
Wed night..N winds 5 to 10 kt. Unless otherwise noted, waves 1 foot or less. Charleston harbor water temperature 63 degrees.
AMZ300 854 Pm Est Fri Nov 16 2018
Synopsis for the coastal waters of south coastal south carolina and north coastal georgia.. Cool, dry high pressure will dominate the pattern through the weekend. Another cold front may move through the region by mid week, followed by stronger high pressure and cool conditions for the mid to late week.


7 Day Forecast for Marine Location Near Sullivan's Island, SC
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location: 32.77, -79.91     debug


Area Discussion for - Charleston, SC
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Fxus62 kchs 170211
afdchs
area forecast discussion
national weather service charleston sc
911 pm est Fri nov 16 2018

Synopsis
Cool, dry high pressure will dominate the pattern through the
weekend. Another cold front may move through the region by mid
week, followed by stronger high pressure and cool conditions
for the mid to late week.

Near term until 6 am Saturday morning
Dew points remain rather high, generally in the upper 30s and
lower 40s as of late Friday evening. This will pose significant
challenges as to how much frost develops and the associated low
temperatures. If the dew points remain higher than anticipated,
dew might be more common rather than frost. Given that a frost
advisory is in place for much of the area, and was well
coordinated earlier, we will leave it in place. Other than a few
cirrus and or altocumulus clouds, skies will be clear and allow
for perfect viewing of the leonid meteor shower from midnight
to dawn. Lows are still forecast to range from 33-36f across
much of the inland counties and where we have the advisory, with
upper 30s and lower 40s over the coastal corridor.

Short term 6 am Saturday morning through Monday
Gradually increasing west-southwest upper level flow and weak
surface high pressure will prevail over the region through the
period.

Saturday: after a cold start, under abundant sunshine forecast low
level thickness values support temperatures climbing close to 30
degrees and reaching the mid 60s in most areas by afternoon. Even
though it will be a bit cooler than normal, light winds will result
in it feeling rather comfortable by afternoon, especially in the
sun. As the high starts to shift into the atlantic Saturday night,
northeast winds will keep marine influenced air close to the coast,
so inland temperatures will drop into the lower and mid 40s with
reading in the lower to mid 50s at and near the coast.

Sunday and Monday: low level marine moisture and associated clouds
will gradually increase from south to north Sunday as a coastal
trough and isentropic lift develop across the area. The greatest
concentration of cloud cover will be near the coast closer to the
trough and the best lift and it is in this area where widely
scattered showers are possible from Sunday into Monday morning.

There is low confidence in the precipitation chances at the present
time, but fairly high confidence that if showers occur they will be
quite light. By later Monday the coastal trough and associated lift
will move well northeast of the area. Highs on both Sunday and
Monday will range from the mid 60s in the north to the lower 70s in
the south.

Long term Monday night through Friday
A broad upper trough moves across the oh river valley Tuesday and
then across new england southeast canada Wednesday. At the surface,
stronger cooler high pressure builds from the northwest behind a
cold front, which moves through with little no precip. Later
Tuesday. The surface ridge remains north of the region Wednesday and
Thursday, then shifts east offshore of the mid atlantic by Friday.

The global models show a return of deep layer moisture from south to
north by Friday as the low level flow veers to southeast. Given the
uncertainty out that far, have kept low end chance pops, which also
seems to collaborate well with surrounding office. High temperatures
starting off in the mid to upper 60s Tuesday, then cooler for
Wednesday and Thursday behind the cold front, with highs generally
in the lower 60s. By Friday, temperatures moderate into the upper
60s. Low temperatures will be cool, ranging from the low 40s well
inland to around 50 closer to the coast.

Aviation 02z Saturday through Wednesday
Vfr through 00z Sunday.

Extended aviation outlook: brief flight restrictions will be
possible later Sunday through early Monday as a weak coastal
trough aids in the development of widely scattered showers.

Otherwise,VFR conditions are expected to prevail for both sites
through the middle of next week.

Marine
Overnight: the local waters will lie on the e-se side of
extensive high pressure from the ohio valley and mid-atlantic
region to the gulf of mexico. This will lead to NW winds
generally around 10 kt, veering to the N or n-ne after
midnight. Not much wave energy over the atlantic, thus
significant wave height is not more than 2-4 ft, highest beyond
40 nm off the georgia coast.

A tranquil weather pattern is expected Saturday through Tuesday
with increasing winds and seas expected Tuesday night into
Wednesday in the wake of a cold front. Generally northeast winds
will become north to northwest late Sunday night or early
Monday and then persist into Tuesday. Wind speeds will be near
or below 10 knots with seas generally from 2 to 4 feet through
Tuesday. A coastal trough will bring a threat for showers in the
georgia offshore waters Saturday night and in all waters Sunday
and Sunday night with a decreasing threat Monday as the coastal
trough moves away.

Chs watches warnings advisories
Ga... Frost advisory from 3 am to 8 am est Saturday for gaz087-088-
099>101-115.

Sc... Frost advisory from 3 am to 8 am est Saturday for scz040-
042>045-047.

Marine... None.

Near term...

short term... Mte
long term... Rfm
aviation...

marine...



Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
CHTS1 1 mi30 min W 5.1 G 8 52°F 63°F1020.5 hPa (+1.2)
FBIS1 - Folly Island, SC 6 mi30 min W 2.9 G 4.1 49°F 1020.9 hPa (+1.3)42°F
ACXS1 - ACE Basin Reserve, SC 32 mi45 min Calm 44°F 1021 hPa43°F
41004 - EDISTO - 41 NM Southeast of Charleston, SC 47 mi40 min NW 7.8 G 12 60°F 72°F2 ft1020.3 hPa47°F

Wind History for Charleston, SC
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Charleston Executive Airport, SC7 mi35 minN 06.00 miFog/Mist41°F41°F100%1020.7 hPa
Mount Pleasant Regional-Faison Field, SC11 mi55 minN 08.00 miFair43°F42°F100%1020.3 hPa
Charleston, Charleston Air Force Base, SC12 mi34 minWNW 410.00 miFair45°F41°F86%1020.4 hPa

Wind History from CHS (wind in knots)
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Last 24hrW5SW6SW6W8W14
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NW11NW8NW9NW6NW7NW10NW8N96W8NW65W7W5W3CalmW3W4
1 day agoNE13NE14NE15
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2 days agoN6N3CalmN12N8NE7NE8NE12NE9N10N9NE13NE12NE10NE8NE12NE13NE10NE11
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NE12NE13NE11NE13

Tide / Current Tables for Fort Johnson, South Carolina
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Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.


Tide / Current Tables for Charleston Harbor Entrance, South Carolina Current
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Charleston Harbor Entrance
Click for Map
Fri -- 12:15 AM EST     Moonset
Fri -- 02:03 AM EST     -0.00 knots Slack
Fri -- 05:29 AM EST     -1.31 knots Max Ebb
Fri -- 06:50 AM EST     Sunrise
Fri -- 08:46 AM EST     0.00 knots Slack
Fri -- 11:07 AM EST     1.15 knots Max Flood
Fri -- 01:47 PM EST     Moonrise
Fri -- 02:44 PM EST     -0.00 knots Slack
Fri -- 05:17 PM EST     Sunset
Fri -- 06:15 PM EST     -1.71 knots Max Ebb
Fri -- 09:27 PM EST     0.00 knots Slack
Fri -- 11:34 PM EST     1.23 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.80.50-0.6-1-1.3-1.3-0.9-0.40.10.81.110.70.4-0.2-0.9-1.4-1.7-1.6-1.1-0.40.51.1

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 (21,6,7,8)
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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.