Friday, May26, 2017 L-36.com


Marine Weather and Tides
Charleston, SC

Version 3.4
What's New / NOTES
5/23/2017 - Worked with NOAA again to speed up the 7 day forecast load times. Thanks to them for being responsive.
5/19/2016 - There were issues with the 3 day airport observation history. I switched to another data source. Let me know if you see any issues with the data feeds.

Sunrise 6:12AMSunset 8:21PM Friday May 26, 2017 1:35 AM EDT (05:35 UTC) Moonrise 6:11AMMoonset 8:23PM Illumination 0% Phase: New Moon; Moon at 1 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- 1006 Pm Edt Thu May 25 2017
Overnight..W winds 10 to 15 kt.
Fri..W winds 5 to 10 kt.
Fri night..SW winds 5 to 10 kt.
Sat..SW winds 5 to 10 kt...increasing to 15 kt in the afternoon.
Sat night..SW winds 15 kt...diminishing to 5 to 10 kt after midnight.
Sun..SW winds 10 to 15 kt.
Sun night..SW winds 15 kt...diminishing to 5 to 10 kt after midnight.
Mon..SW winds 10 kt. A chance of showers and Thunderstorms.
Mon night..SW winds 5 to 10 kt. A chance of showers and Thunderstorms.
Tue..W winds 5 to 10 kt. A chance of showers and Thunderstorms.
Tue night..SW winds 5 kt. A slight chance of showers and Thunderstorms. Mariners are reminded that winds and waves can be higher in and near tstms. Unless otherwise noted...waves 1 foot or less. Charleston harbor water temperature...77 degrees.
AMZ300 1006 Pm Edt Thu May 25 2017
Synopsis for the coastal waters of south coastal south carolina and north coastal georgia.. High pressure will linger over the region through this weekend. A weak cold front is expected to slowly slide over the coastal plain early 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 260213
afdchs
area forecast discussion
national weather service charleston sc
1013 pm edt Thu may 25 2017

Synopsis
High pressure will linger over the region through this weekend. A
weak cold front is expected to slowly slide over the coastal plain
early next week.

Near term through Friday
Tonight: under clear skies with slackening winds, temperatures
will fall into the mid upper 50s inland and into the 65-70f
range on the beaches.

Friday, mid levels should begin the day zonal with slight rises from
the west during the afternoon hours. Llvl flow will remain from the
wsw through the day. The combination of full insolation and wsw
winds should yield increasing low level thicknesses. High
temperatures are forecast to range in the mid 80s inland to the low
80s across the beaches.

Short term Friday night through Sunday
Weak ridging aloft will build slowly through the period. At the
surface, elongated high pressure stretching from the gulf of mexico
into the atlantic basin will remain in control. Though boundary
layer flow will be mainly southwesterly, low-to-mid-level flow will
be westerly, resulting in drier downsloping conditions precluding
mentionable pops for most. The exception is areas near and north of
lake moultrie, where some modest destabilization and moisture
pooling associated with a disturbance north of the area may allow
some showers thunderstorms to scrape the area.

Low level thickness values suggest highs in the mid-90s Saturday and
Sunday, but with some mid level cloud cover and afternoon cumulus
possible, have moderated the forecast both days. Still, with the
seabreeze trapped near the coast, lower-90s can be expected
everywhere except the beaches both days. Afternoon dew points in the
lower 70s Sunday will contribute to heat index values approaching
100 for some areas along the hwy 17 corridor.

Long term Sunday night through Thursday
The surface cold front will approach the area through the first
half of the week as the trough aloft slides east, bringing the
potential for another period of unsettled weather Monday through
Wednesday.

Aviation 02z Friday through Tuesday
Vfr.

Extended aviation outlook:VFR.

Marine
Across sc waters outside charleston harbor, W SW gusts to 25
knots could persist into the overnight hours. Thus, extended
scas until 2 am north of the savannah river. On the other hand,
the pressure gradient had relaxed over ga waters, so scas are
no longer in effect for amz354 and amz374. Across sc waters and
the outer ga waters, offshore winds will diminish to 10-15 kt
overnight, while winds 10 kt or less will become common on
charleston harbor and across amz354.

On Friday, southwest winds are forecast to remain gusty, but
less than advisory levels. Wave heights are expected to range
between 1-2 feet within 10 nm and 2-3 feet beyond 10 nm.

Friday night through Monday: high pressure will prevail across
the coastal waters into early next week. Moderate breezes will
persist across the waters through the period, with winds
approaching advisory criteria at times mainly for the charleston
county nearshore waters, where the gradient will be tighter
thanks to a weak disturbance north of the area. Seas will be 2
to 3 feet, with higher seas possible beyond 40 nm at times.

Tides coastal flooding
Tide levels will trend higher each day as we approach the new moon
and perigee this Friday. Despite the unfavorable wind direction,
minor coastal flooding is possible along mainly the south carolina
coast with the evening high tide cycles Friday through the
weekend.

Chs watches warnings advisories
Ga... None.

Sc... None.

Marine... Small craft advisory until 2 am edt Friday for amz350-352.

Near term... Spr
short term... Ceb
long term... Jmc
aviation... Spr
marine... Ceb spr
tides coastal flooding... Ceb


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
CHTS1 0 mi48 min SW 4.1 G 7 68°F 77°F1013 hPa
FBIS1 - Folly Island, SC 7 mi36 min WSW 6 G 8.9 68°F 1013.6 hPa (+1.8)58°F
41029 - Capers Nearshore (CAP 2) 16 mi148 min W 18 G 23 79°F 76°F1011.4 hPa
ACXS1 - ACE Basin Reserve, SC 32 mi111 min Calm 68°F 1013 hPa58°F
41033 43 mi88 min W 16 G 19 75°F 77°F1012.5 hPa
41004 - EDISTO - 41 NM Southeast of Charleston, SC 48 mi46 min W 19 G 23 74°F 75°F6 ft1012.5 hPa58°F

Wind History for Charleston, SC
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Charleston Executive Airport, SC7 mi41 minWSW 410.00 miFair66°F57°F73%1013.2 hPa
Charleston, Charleston Air Force Base, SC10 mi1.7 hrsSW 710.00 miFair65°F52°F63%1012.4 hPa
Mount Pleasant Regional-Faison Field, SC11 mi61 minSW 410.00 miFair68°F57°F69%1012.9 hPa

Wind History from CHS (wind in knots)
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Last 24hrSW11SW7SW11
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W8SW7SW7SW8SW7SW8
1 day agoSW9SW14SW4SW7SW8SW7SW7SW6SW9SW12SW15
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S14S11S9SW9S11S8SW19
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2 days agoSW8S8S7S5CalmSW5W4W6SW7SW9SW12SW12S13SW5NW8N6N7N6E4SE3S9S6S5SW7

Tide / Current Tables for Charleston, South Carolina
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Charleston
Click for Map
Fri -- 03:07 AM EDT     -0.61 feet Low Tide
Fri -- 06:14 AM EDT     Sunrise
Fri -- 07:11 AM EDT     Moonrise
Fri -- 09:12 AM EDT     5.58 feet High Tide
Fri -- 03:15 PM EDT     -0.92 feet Low Tide
Fri -- 08:19 PM EDT     Sunset
Fri -- 09:23 PM EDT     Moonset
Fri -- 09:38 PM EDT     6.98 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
3.21.40-0.6-0.212.645.15.65.34.42.91.3-0.1-0.9-0.60.72.64.45.96.86.96.2

Tide / Current Tables for Charleston Harbor Entrance, South Carolina Current
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Charleston Harbor Entrance
Click for Map
Fri -- 12:33 AM EDT     -3.45 knots Max Ebb
Fri -- 03:39 AM EDT     0.00 knots Slack
Fri -- 05:56 AM EDT     2.01 knots Max Flood
Fri -- 06:14 AM EDT     Sunrise
Fri -- 07:11 AM EDT     Moonrise
Fri -- 09:38 AM EDT     -0.01 knots Slack
Fri -- 12:49 PM EDT     -3.05 knots Max Ebb
Fri -- 03:42 PM EDT     0.01 knots Slack
Fri -- 06:19 PM EDT     2.45 knots Max Flood
Fri -- 08:19 PM EDT     Sunset
Fri -- 09:23 PM EDT     Moonset
Fri -- 10:12 PM EDT     -0.01 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
-3.3-3.3-2.4-10.51.621.71.40.7-0.5-1.8-2.7-3-2.4-10.41.72.42.31.91.40.3-1.2

Weather Map and Satellite Images
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Weather Map
wmap_A
IR Satellite Image from GEOS
east_satellite

GOES Local Image of Southeast    EDIT
Geos

Wind Forecast for Charleston, SC (1,6,7,8)
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Ground Weather Radar Station Charleston, SC
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weather_mapweather_map weather_map

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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.