Marine Weather and Tides
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 6:51AM||Sunset 5:17PM||Sunday November 18, 2018 12:02 PM EST (17:02 UTC)||Moonrise 2:43PM||Moonset 1:57AM||Illumination 81%|
7 Day Forecast for Marine Location Near Isle of Palms, SCHourly EDIT Help
Area Discussion for - Charleston, SC  (on/off)  Help NOTE: mouseover dotted underlined text for definition
|Fxus62 kchs 181544|
area forecast discussion
national weather service charleston sc
1044 am est Sun nov 18 2018
The region will remain situated between high pressure and a
coastal trough until a cold front moves through by mid week,
followed by high pressure through mid to late week.
Near term through tonight
Through this afternoon: a pool of pwats around 1 inch focused
near a coastal trough will continue to advect onshore,
supporting isolated scattered showers. In some areas between
ksav and kchs, raised pops to account for expected
precipitation coverage per recent radar trends latest high
resolution model guidance. Despite clouds showers, high temps
in the upper 60s to lower 70s will be common, highest away from
Tonight: the coastal trough lifts toward the north and
northeast, as high pressure off new england pulls further into
the atlantic. The proximity to the trough and considerable low
level moisture will still allow for at least isolated showers.
As the trough starts to lift northeast overnight, the
stratocumulus will build down into more of a stratus layer, and
that along with some wetness to the grounds will allow for
patchy fog to form overnight, mainly to the west of i-95. Lows
will be several degrees above normal given the cloud cover and a
warm southeast to south low level flow.
Short term Monday through Wednesday
Any lingering precipitation over the forecast area due to the
coastal trough will shift east and offshore by mid-Monday morning as
the axis of mid and upper level troughing moves towards the forecast
area. Expansive cloud cover likely remains in place until a much
drier column pushes into the southeast once the trough and
associated cold front cross Tuesday afternoon or evening. The 18 00z
suite of models are suggesting a period of mainly light
precipitation is possible Tuesday morning as the front approaches
but soundings show relatively dry profiles through the lower
atmosphere and GFS ensemble mean precipitation values fail to
inspire confidence in plausibility, so unmentionable pops will be
maintained in the forecast.
Long term Wednesday night through Saturday
Dry conditions will prevail behind the front, with a minor cooldown
before moderating into late week. Model divergence increases by the
end of the week. Onshore flow and increasing moisture levels will
set the stage and a developing coastal trough or possible surface
low could provide the forcing for precipitation production heading
into the weekend.|
Aviation 16z Sunday through Thursday
Rest of today and this evening:VFR ceilings, with brief flight
restrictions possible in light showers. Later tonight into
Monday morning, flight restrictions possible in low clouds and
Extended aviation outlook:VFR conditions are expected to prevail at
both terminals through mid-week, although brief periods of flight
restrictions will be possible Sunday night into Monday morning due
to the potential for showers and low clouds fog.
Through this afternoon: a trough located about 20-30 nm off the
georgia and south carolina coasts will push closer toward shore
as the day progresses. NE winds as high as 15-20 kt outside
charleston harbor and 10-15 kt on the harbor will clock more e
this afternoon at slightly lower speeds. Seas will average 2-4
ft, highest beyond 10-15 nm off the coast, and will include a
9-10 second period swell from the ese.
Tonight: the coastal trough across the waters will lift to the
north-northeast, allowing for easterly winds around 10-12 kt
early to become more variable in direction at speeds around 5-10
kt thereafter. Seas will still be as high as 2-4 ft, although
now highest on the outer georgia waters.
Monday through Friday: relatively benign conditions are
anticipated into mid-week over marine zones with high pressure
remaining as the dominant influence. Through Wednesday, expect
winds to peak in the 10 to 15 knot range with seas averaging 2
to 4 feet. Better model agreement indicates that a tightening
pressure gradient Thursday afternoon into Friday evening could
result in winds and seas reaching small craft advisory criteria.
Unfortunately, forecast uncertainty continues to decrease late
in the week as model guidance diverges regarding formation and
evolution of low pressure.
Chs watches warnings advisories
Near term... Spr
long term... Jmc
Weather Reporting StationsEDIT (on/off)  Help NOTE: Click on distance to see the station location on a map
Airport ReportsEDIT (on/off)  Help Click EDIT to display multiple airports
|Charleston Executive Airport, SC||171 mi||67 min||NE 8||5.00 mi||Partly Cloudy with Haze||68°F||59°F||73%||1024.4 hPa|
Wind History from JZI (wind in knots)
|1 day ago||NW||W||W||W||W||Calm||Calm||Calm||Calm||Calm||Calm||Calm||Calm||Calm||Calm||Calm||Calm||Calm||Calm||Calm||Calm||E||NE|
|2 days ago||NW||W||NW|
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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.
Link to Loop
Other links: Northern Pacific Contential US Full GOES-East
Wind Forecast for Charleston, SC (12,3,4,5)(on/off)  Help
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