Sunday, July22, 2018 L-36.com


Marine Weather and Tides
Charleston, SC

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Sunrise 6:26AMSunset 8:26PM Sunday July 22, 2018 8:26 PM EDT (00:26 UTC) Moonrise 3:19PMMoonset 1:28AM Illumination 76% Phase: Waxing Gibbous; Moon at 10 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- 453 Pm Edt Sun Jul 22 2018
Tonight..S winds 10 to 15 kt, diminishing to 5 to 10 kt after midnight. A chance of showers and tstms.
Mon..S winds 5 to 10 kt, increasing to 10 kt in the afternoon. A chance of showers and tstms.
Mon night..S winds 10 kt. A chance of showers and tstms.
Tue..S winds 10 to 15 kt. A chance of showers and tstms in the morning, then showers and tstms likely in the afternoon.
Tue night..S winds 10 to 15 kt. Showers and tstms likely.
Wed..S winds 10 kt. Showers and tstms likely.
Wed night..SW winds 10 to 15 kt. Showers and tstms likely, mainly in the evening.
Thu..SW winds 10 kt. A chance of showers and tstms.
Thu night..SW winds 5 to 10 kt. A chance of showers and tstms.
Fri..SW winds 10 to 15 kt. A chance of showers and tstms.
Fri night..SW winds 5 to 10 kt. A slight chance of showers and tstms. Mariners are reminded that winds and waves higher in and near tstms. Unless otherwise noted, waves 1 foot or less. Charleston harbor water temperature 85 degrees.
AMZ300 453 Pm Edt Sun Jul 22 2018
Synopsis for the coastal waters of south coastal south carolina and north coastal georgia.. Low pressure will develop over the southeast united states and persist through Wednesday before dissipating. Atlantic high pressure is expected to build across the region by late 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 222307
afdchs
area forecast discussion
national weather service charleston sc
707 pm edt Sun jul 22 2018

Synopsis
Low pressure will develop over the southeast united states and
persist through Wednesday before dissipating. Atlantic high
pressure is expected to build across the region by late week.

Near term until 6 am Monday morning
Convection should gradually wind down across southeast georgia
as subsidence works its way in from the west in the wake of the
passing vorticity maximum located near sylvania, ga, at
22 2300z. Farther to the east and northeast, kclx shows a
pronounced resultant sea breeze circulation extending from near
saint stephen, sc, southwest into the savannah metro area.

Could see an uptick in convection next 1-2 hours across mainly
the charleston tri-county into southern colleton county as
upper forcing with the vort MAX impinges on the sea breeze.

Dcape is still running 1300-1400 j kg and the tail end of a belt
of 30 kt bulk shear currently extends south out of the pee dee
into berkeley county. This may be just enough to support an
isolated severe TSTM or two through 9 pm across parts of the
charleston metro area and tri-county area.

The forecast is in good shape and does not require any changes
at this time.

Short term 6 am Monday morning through Wednesday
A deep layer low pressure system will be centered just west of the
area over central ga. This system will help advect tropical
moisture northward within deep southerly flow, with the highest pws
of 2+ inches on Tuesday. The upper trough begins to weaken and lift
northeastward on Wednesday, pushing the higher pws northeastward as
well. High temperatures are expected to be near to slightly below
normal through at least Tuesday due to higher cloud cover pops, then
starting to move back toward normal by Wednesday.

Monday: models are hinting that there will be a narrow ribbon of
relatively lower moisture moving across the area for much of the
day, which could help hold down convective coverage. Have held pops
in the chance range most areas, except closer to low end likely over
the extreme north, where better low level convergence may reside.

Given the presence of the upper low and ample moisture, have kept
chance pops through the night.

Tuesday and Wednesday: for now, have continued generally likely pops
both afternoons, then chance each night. However, would not be
surprised if pops need to be lowered a tad by Wednesday as the upper
trough begins to lift northeast and deep layer moisture also starts
to fall from west to east.

Long term Wednesday night through Sunday
Weak shortwave energy will persist on Thursday before the deep
layered ridge builds from the western atlantic over the
southeast united states. We're showing higher pops on Thursday,
then more typical summertime coverage Friday through Sunday.

Aviation 00z Monday through Friday
Vfr. Could see tstms fire near kchs at press time with the sea
breeze lurking around the terminal and a vort MAX approaching
from the west. Risk for tstms should end by 01-02z. There is a
small chance for low clouds working into both kchs and ksav
prior to daybreak Monday, but overall probabilities are quite
low and no low CIGS will be mentioned.

Extended aviation outlook:
Monday: think convection will be more scattered, mainly during the
afternoon as slightly drier air moves over the region, and the sea
breeze focus convection further inland. By Monday night, deep layer
moisture may increase enough to help spark more late night showers
and thunderstorms over the atlantic that could advect into the taf
sites, especially kchs.

Tuesday and Wednesday: scattered to numerous showers thunderstorms
mainly during the afternoon will produce the chance for brief flight
restrictions.

Thursday and Friday: convection should become more scattered during
the afternoon as the upper trough moves out of the area, decreasing
the deep layer moisture.

Marine
Tonight: mainly southwest winds around 15 kt or less will
prevail ahead of a cold front with waves up to 4 ft (highest
near the gulf stream).

Monday through Wednesday: an upper trough low pressure will sit over
the southeast u.S., producing southerly winds of mainly 15 knots or
less and seas 3 to 5 feet. However, guidance continues to hint at
seas reaching around 6 feet 20 nm and beyond, and winds at times
climbing to 15-20 knots, especially on Tuesday when the pressure
gradient will be the strongest. Will continue to monitor model
trends to see if small craft advisories will be needed. Scattered to
numerous showers and thunderstorms, mainly late night through
morning, can be expected through the period.

Thursday and Friday: atlantic high pressure starts to return from
the east with south-southwest winds of 15 knots or less, and seas 3
to 4 feet, highest offshore. Any precipitation is expected to become
more scattered.

Chs watches warnings advisories
Ga... None.

Sc... None.

Marine... None.



Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
CHTS1 0 mi39 min WSW 5.1 G 7 85°F1007 hPa
FBIS1 - Folly Island, SC 7 mi87 min SSW 13 G 15 85°F 1007.4 hPa (-0.7)79°F
41029 - Capers Nearshore (CAP 2) 16 mi79 min SW 16 G 21 84°F 85°F1006.1 hPa
ACXS1 - ACE Basin Reserve, SC 32 mi102 min SSE 1 87°F 1006 hPa79°F
41033 43 mi79 min SW 16 G 21 85°F 85°F1006.1 hPa
41004 - EDISTO - 41 NM Southeast of Charleston, SC 48 mi37 min S 12 G 14 83°F4 ft1007.6 hPa

Wind History for Charleston, SC
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Charleston, Charleston Air Force Base, SC10 mi91 minSW 710.00 miMostly Cloudy86°F73°F67%1006.8 hPa
Mount Pleasant Regional-Faison Field, SC11 mi52 minSSW 68.00 miFair84°F78°F84%1007.1 hPa

Wind History from CHS (wind in knots)
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Last 24hrS6S7S4SW7SW4SW6SW6SW7NW4SW4SW4W5SW8W10W633SW86SW11S11S13S12SW7
1 day agoN4N3N4N4N4N5N4NW4NW5NW5NW6NW3NW7NW8W9NW8W7W5SW6W7W7W7W8SW6
2 days agoE9E10E7CalmE5E5NE6NE5E8NE8E11SE4E4N4NE6S6E4E4S4S7N6CalmW3Calm

Tide / Current Tables for Charleston, South Carolina
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Charleston
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Sun -- 02:27 AM EDT     Moonset
Sun -- 04:31 AM EDT     4.77 feet High Tide
Sun -- 06:26 AM EDT     Sunrise
Sun -- 10:41 AM EDT     0.29 feet Low Tide
Sun -- 04:18 PM EDT     Moonrise
Sun -- 05:18 PM EDT     5.67 feet High Tide
Sun -- 08:25 PM EDT     Sunset
Sun -- 11:25 PM EDT     0.74 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.52.43.34.24.74.74.23.32.21.20.50.30.91.93.14.25.15.65.54.93.82.61.50.8

Tide / Current Tables for Charleston Harbor Entrance, South Carolina Current
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Charleston Harbor Entrance
Click for Map
Sun -- 12:56 AM EDT     1.15 knots Max Flood
Sun -- 02:27 AM EDT     Moonset
Sun -- 04:38 AM EDT     -0.00 knots Slack
Sun -- 06:26 AM EDT     Sunrise
Sun -- 08:13 AM EDT     -1.82 knots Max Ebb
Sun -- 11:18 AM EDT     0.00 knots Slack
Sun -- 01:36 PM EDT     1.35 knots Max Flood
Sun -- 04:18 PM EDT     Moonrise
Sun -- 05:42 PM EDT     -0.00 knots Slack
Sun -- 08:24 PM EDT     Sunset
Sun -- 08:53 PM EDT     -2.23 knots Max Ebb
Sun -- 11:57 PM EDT     0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.91.210.80.4-0.2-0.9-1.5-1.8-1.7-1.1-0.30.71.31.31.31.10.6-0.3-1.2-2-2.2-1.8-1

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.
target = "new">Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Charleston, SC (20,4,5,8)
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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.