Monday, August19, 2019 L-36.com


Marine Weather and Tides
Charleston, SC

Version 3.4
NOTICE
7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports.
6/2/2019. Many thanks to a user for reporting an error on one of the Edit pages. The switch to PHP 7.2 caused many pages that previously worked to quit working. I fixed many but I still depend on users to report ones I missed. Please report errors HERE or send an email to me at L-36.com. Allen

Sunrise 6:44AMSunset 8:02PM Monday August 19, 2019 10:20 AM EDT (14:20 UTC) Moonrise 9:33PMMoonset 9:15AM Illumination 84% Phase: Waning Gibbous; Moon at 19 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- 711 Am Edt Mon Aug 19 2019
Today..S winds 5 to 10 kt. A slight chance of showers and tstms.
Tonight..SW winds 5 to 10 kt. A slight chance of showers and tstms.
Tue..S winds 5 to 10 kt. A slight chance of showers and tstms in the morning, then a chance of showers and tstms in the afternoon.
Tue night..S winds 5 to 10 kt. A slight chance of showers and tstms in the evening, then a chance of showers and tstms after midnight.
Wed..SW winds 5 kt, becoming S 10 to 15 kt with gusts to 20 kt in the afternoon. A chance of showers and tstms.
Wed night..S winds 10 to 15 kt with gusts to 20 kt, becoming sw 5 to 10 kt after midnight. A chance of showers and tstms.
Thu..SW winds 10 to 15 kt. A chance of showers and tstms.
Thu night..SW winds 10 to 15 kt. A chance of showers and tstms.
Fri..SW winds 5 to 10 kt. A chance of showers and tstms.
Fri night..SW winds 5 to 10 kt. A 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 711 Am Edt Mon Aug 19 2019
Synopsis for the coastal waters of south coastal south carolina and north coastal georgia.. Atlantic high pressure and an inland trough will prevail until late week when a cold front possibly affects the area.


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 191125
afdchs
area forecast discussion
national weather service charleston sc
725 am edt Mon aug 19 2019

Synopsis
Atlantic high pressure and an inland trough will prevail until
late week when a cold front possibly affects the area.

Near term through tonight
As of 720 am: kclx detected isolated showers over the marine
zones and extreme SE ga. Showers and thunderstorms should
continue to increase across SE ga through this morning. The
current forecast appears well in line with the recent radar
trends.

As of 315 am: near term guidance indicates that the h5 pattern
will feature a ridge centered over the southern great plains and
another ridge centered over the western atlantic, between nc
and bermuda. A weakness or a weak h5 low should develop over
ga sc today. At the sfc, a broad low is expected to form over
southern ga. The circulation around the low should bring +2" pw
north across the forecast area today. High temperatures are
forecast to range from around 90s across the charleston tri-
county to the upper 80s along the coast and SE ga. The afternoon
environment should become unstable, with moderate CAPE values
along and east of i-95. The coverage of showers and
thunderstorms should be greater than what was seen on Sunday. In
fact, numerous thunderstorms are expected across the ga zones
this afternoon, closer to the sfc and mid-level low. The severe
weather threat appears low given the deep moisture and high
freezing level. However, areas that experience cell mergers
could easily see localized rainfall totals >1" this afternoon.

Tonight: convection is forecast to gradually dissipate during the
evening hours, lingering the latest over the inland counties.

Isolated showers and thunderstorms may persist over the marine zones
through the night. Using a blend of mos, low temperatures are
forecast to range from the low 70s inland to the upper 70s over the
beaches.

Short term Tuesday through Thursday
Moderate confidence this period. Deep layer troughing will linger
inland while high pressure persists offshore. It appears as though
the best moisture and forcing will likely stay just west of the area
at least through Wednesday but we'll continue to mention a chance of
scattered showers and thunderstorms each day. Given the deep
moisture and generally light low-mid level winds there will at least
be a small risk of localized heavy rain flooding. Also can't
completely rule out isolated severe storms each day but conditions
aren't that favorable for much severe weather due to limited
instability deep layer shear. Temperatures should be near to above
normal.

Long term Thursday night through Sunday
Low to moderate confidence this period. The pattern doesn't change
much until a cold front possibly moves near or even into the area
this weekend and stalls into early next week keeping the weather
more unsettled than normal. Not expecting much more than isolated
severe storms flooding at this time. Temperatures should fall back
closer to normal given the increased rain cloud coverage.

Aviation 12z Monday through Friday
Prior to the 12z tafs, IR satellite and sfc based observations
indicated a ragged patch of ifr MVFR ceilings across SE ga. I
will initialize the ksav TAF with bkn011 and will keep until
13z. Kchs is expected to remain north of the restrictive
ceilings,VFR conditions forecast for this morning. The
combination of deep moisture and steeper afternoon lapse rates
should support scattered to numerous thunderstorms today. I will
highlight the mid to late afternoon hours with a tempo for tsra
at both sites. Cams indicate that ksav will see a greater
chance for thunderstorms that kchs. Convection should dissipate
within an hour or two of sunset.

Extended aviation outlook: periodic restrictions at kchs ksav
through sat, mainly from afternoon evening showers and thunderstorms.

Marine
The surface pattern will support steady south winds between 10-15
kts today and tonight. Wave heights are forecast to range between 1-
3 ft. Isolated to scattered thunderstorms are expected over the
waters today and tonight. The coverage should peak this afternoon
within 10 nm of shore.

Tuesday through Saturday: atlantic high pressure and an inland
trough will result in mainly south southwest winds around 15 knots
or less through the period. No significant marine impacts are
expected other than some stronger storms from time to time.

Chs watches warnings advisories
Ga... None.

Sc... None.

Marine... None.

Near term... Ned
short term... Rjb
long term... Rjb
aviation... Ned rjb
marine... Ned rjb


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
CHTS1 0 mi50 min WNW 2.9 G 4.1 81°F 85°F1019.4 hPa
FBIS1 - Folly Island, SC 7 mi80 min W 2.9 G 5.1 79°F 1019.7 hPa (+1.8)74°F
41029 - Capers Nearshore (CAP 2) 16 mi72 min WNW 9.7 G 12 80°F 84°F1019.3 hPa
ACXS1 - ACE Basin Reserve, SC 32 mi95 min Calm 80°F 1019 hPa75°F
41033 43 mi72 min WNW 5.8 G 7.8 81°F 84°F1018.9 hPa
41004 - EDISTO - 41 NM Southeast of Charleston, SC 48 mi40 min SW 7.8 G 9.7 81°F 82°F1019.3 hPa78°F

Wind History for Charleston, SC
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Charleston Executive Airport, SC7 mi25 minN 09.00 miFair84°F75°F74%1019.6 hPa
Charleston, Charleston Air Force Base, SC10 mi84 minW 410.00 miPartly Cloudy78°F73°F85%1019.2 hPa
Mount Pleasant Regional-Faison Field, SC11 mi25 minN 07.00 miMostly Cloudy82°F75°F79%1019.3 hPa

Link to 5 minute data for KJZI

Wind History from JZI (wind in knots)
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Tide / Current Tables for Charleston, South Carolina
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Charleston
Click for Map
Mon -- 05:04 AM EDT     0.53 feet Low Tide
Mon -- 06:45 AM EDT     Sunrise
Mon -- 10:15 AM EDT     Moonset
Mon -- 11:03 AM EDT     5.23 feet High Tide
Mon -- 05:13 PM EDT     0.82 feet Low Tide
Mon -- 08:00 PM EDT     Sunset
Mon -- 10:32 PM EDT     Moonrise
Mon -- 11:19 PM EDT     5.34 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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5.24.33.11.90.90.50.91.93.24.355.254.33.22.11.30.811.93.14.255.3

Tide / Current Tables for Charleston Harbor Entrance, South Carolina Current
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Charleston Harbor Entrance
Click for Map
Mon -- 02:35 AM EDT     -2.17 knots Max Ebb
Mon -- 05:43 AM EDT     0.00 knots Slack
Mon -- 06:45 AM EDT     Sunrise
Mon -- 08:10 AM EDT     1.54 knots Max Flood
Mon -- 10:14 AM EDT     Moonset
Mon -- 11:37 AM EDT     -0.00 knots Slack
Mon -- 02:50 PM EDT     -1.92 knots Max Ebb
Mon -- 05:56 PM EDT     0.00 knots Slack
Mon -- 08:00 PM EDT     Sunset
Mon -- 08:30 PM EDT     1.44 knots Max Flood
Mon -- 10:32 PM EDT     Moonrise
Mon -- 11:50 PM EDT     -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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-0.7-1.5-2.1-2.1-1.6-0.70.21.11.51.40.90.4-0.3-1.2-1.8-1.9-1.6-0.800.81.41.40.90.5

Weather Map and Satellite Images
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wmap_A
GOES Local Image of    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 (10,2,3,4)
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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.