Wednesday, November22, 2017 L-36.com


Marine Weather and Tides
Hanahan, SC

Version 3.4
What's New / NOTES
6/25/2017 - NOAA is having a major issue that impact the 7 day forecast load times. Many users are reporting problems. The issue has been reported.
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 6:56AMSunset 5:16PM Wednesday November 22, 2017 6:05 AM EST (11:05 UTC) Moonrise 10:14AMMoonset 8:46PM Illumination 14% Phase: Waxing Crescent; Moon at 4 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- 412 Am Est Wed Nov 22 2017
Today..NW winds 5 kt, becoming N late this morning.
Tonight..NE winds 10 kt. A slight chance of showers after midnight.
Thu..NE winds 10 to 15 kt. A chance of showers.
Thu night..NE winds 10 to 15 kt. A chance of showers.
Fri..NE winds 10 to 15 kt. A chance of showers.
Fri night..N winds 10 kt. A chance of showers.
Sat..NW winds 10 kt.
Sat night..W winds 10 kt.
Sun..N winds 10 kt.
Sun night..N winds 10 to 15 kt. Unless otherwise noted, waves 1 foot or less. Charleston harbor water temperature 61 degrees.
AMZ300 412 Am Est Wed Nov 22 2017
Synopsis for the coastal waters of south coastal south carolina and north coastal georgia.. High pressure will gradually build across the area today. A series of low pressure systems will track from the northern gulf of mexico up the southeast coast tonight through Friday night. A cold front will shift through the area Saturday night, followed by dry high pressure through the middle of next week.

7 Day Forecast for Marine Location Near Hanahan, SC
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location: 32.91, -79.94     debug


Area Discussion for - Charleston, SC
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Fxus62 kchs 220927
afdchs
area forecast discussion
national weather service charleston sc
427 am est Wed nov 22 2017

Synopsis
High pressure will gradually build across the area today. A
series of low pressure systems will track from the northern
gulf of mexico up the southeast coast tonight through Friday
night. A cold front will shift through the area Saturday night,
followed by dry high pressure through the middle of next week.

Near term through tonight
As of 425 am: latest sfc analysis indicated a stationary front
well off the coast with a cold front sliding over the southern
appalachians. High and mid level clouds have cleared in the wake
of a departing mid level shortwave. Given light winds, wet
soils, and clearing upper cloud cover, the environment has been
very supportive to the formation of stratus and fog. Latest
observations indicated that dense fog has developed across se
ga. Slight elevated winds across SE sc seems to kept the bl more
mixed, resulting in visibilities to range from .5-5 sm. I will
keep a dense fog advisory in place across SE ga until 10 am. It
is possible that the advisory may expand across the savannah
river early this morning as the cold front approaches. Fog and
stratus is expected to dissipate by mid morning. In fact, the
weak cold front is timed to push off the coast by 18z. As the
front passes, winds should shift from the nne and cloud cover
should see a several hour window of partly sunny conditions this
afternoon. High temperatures are forecast to range from around
70 across sc to the low 70s across SE ga.

Tonight: the sfc pattern will feature large high pressure
centered over WV and low pressure developing off the gulf coast
of fl. Moisture will gradually increase across the forecast area
tonight. However, low level isentropic lift appears to remain
south of the CWA through the overnight period. This forecast
package will feature much lower values of pops and keeps the
forecast dry until the predawn hours. Low temperatures are
forecast to range from the mid 40s across sc to the low 50s
across SE ga.

Short term Thursday through Saturday
The deep upper shortwave over the northern gulf of mexico on
Thursday will very slowly shift east and northeast, eventually
clearing our area on Saturday. A surface low will lift through
northern florida on Thursday, spreading atlantic moisture into
the area from the southeast. With high pressure firmly
entrenched inland, isentropic ascent will ensue, allowing light
showers to begin spreading in from the southeast during the
afternoon. The greatest QPF and overall coverage is expected
Thursday night when the center of the low is just off the sc ga
coast. However, a secondary low will spread another round of
rain into the area Friday and Friday night, primarily affecting
the coastal waters and land areas closer to the coastline. Both
days will feature below-normal temperatures in the upper 50s to
lower 60s.

By Saturday we expect clearing skies as the upper trough axis
shifts east and high pressure builds from the west. Downslope
flow will help push high temps into the mid upper 60s.

Long term Saturday night through Tuesday
Dry high pressure will prevail Saturday night through the middle
of next week. Cooler temps will be the rule Sunday into Monday
due to cold air advection, but a quick warm-up occurs mid-week
as the surface high shifts offshore.

Aviation 10z Wednesday through Sunday
Rain has generally pushed north and east of the terminals.

Clearing in the wake of the rainfall has created favorable
conditions for lifr to vlifr stratus and fog, especially across
se ga. Ksav should see very restrictive ceilings and vis through
the early daylight hours, improving toVFR by 16z. Kchs may see
a greater issue with lowering stratus than with dense fog
through 14z. Winds should remain light early this morning, with
north winds between 5-10 kts during the daylight hours.

Extended aviation outlook: an extended period of MVFR ifr
conditions expected from late Thursday night through Friday
night as low pressure moves up the coast.VFR conditions
should prevail at both terminals Saturday through Monday.

Marine
Today through tonight: a cold front will slide across the marine
zones during the mid day. Winds in the wake of the front will
shift out of the north then from the north-northeast this
afternoon through tonight. Build high pressure centered over wv
will provide a slightly steeper pressure gradient tonight,
supporting gusts into the lower 20 kts. Wave height should
slowly trend higher today and tonight. Waves are forecast to
range by late tonight from 3-5 feet within 20 nm to 5-6 feet
across the outer ga waters.

A northeast flow will continue Thursday through Friday night as
high pressure lingers inland and a series of surface lows move
up the coast. Wind speeds are expected to be near small craft
advisory level during this time, while seas are also expected to
climb to as high as 6 ft. Expansive high pressure will build
over the waters during the weekend into early next week.

Chs watches warnings advisories
Ga... Dense fog advisory until 10 am est this morning for gaz087-088-
099>101-114>119-137>141.

Sc... None.

Marine... None.

Near term... Ned
short term... Jrl
long term... Jrl
aviation... Jrl ned
marine... Jrl ned


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
CHTS1 9 mi48 min WNW 8 G 12 61°F 61°F1013.8 hPa
FBIS1 - Folly Island, SC 16 mi66 min WNW 6 G 8.9 61°F 1014.2 hPa (-0.3)61°F
41029 - Capers Nearshore (CAP 2) 18 mi58 min NW 9.7 G 14 59°F 62°F1013.4 hPa
ACXS1 - ACE Basin Reserve, SC 36 mi81 min WNW 1 60°F 1014 hPa60°F
NIWS1 - North Inlet-Winyah Bay Reserve, SC 50 mi81 min W 7 60°F 1014 hPa60°F

Wind History for Charleston, SC
(wind in knots)    EDIT      (on/off)   Help
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W8
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Charleston, Charleston Air Force Base, SC5 mi70 minNW 8 G 168.00 miOvercast61°F60°F97%1013.7 hPa
Mount Pleasant Regional-Faison Field, SC8 mi71 minWNW 810.00 miOvercast61°F60°F100%1013.5 hPa
Charleston Executive Airport, SC15 mi71 minWNW 65.00 miFog/Mist63°F60°F94%1013.9 hPa
Moncks Corner Berkeley County, SC20 mi71 minNW 33.00 miFog/Mist57°F57°F100%1014.2 hPa
Summerville Airport, SC21 mi71 minNW 65.00 miFog/Mist59°F59°F100%1014.6 hPa

Wind History from CHS (wind in knots)
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Last 24hrNE5N3NE4NE5NE5NE7E5E8SE6E7E7E6NE8NE6N6NE3CalmCalmS3W4W5W6NW7NW8
G16
1 day agoCalmN5NE4E75NE75N4N5SE3NE5SE8CalmSE3E3CalmNE4NE4NE5NE7NE4N4N4N4
2 days agoW8W10W10W10NW13NW14
G20
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G21
NW10W11NW12NW7NW5NW4NW6N6NW6NW5N7N9NE7NE5N4N4

Tide / Current Tables for Clouter Creek, north entrance, Cooper River, South Carolina
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Clouter Creek
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Wed -- 04:19 AM EST     0.63 feet Low Tide
Wed -- 06:56 AM EST     Sunrise
Wed -- 10:13 AM EST     Moonrise
Wed -- 10:56 AM EST     5.94 feet High Tide
Wed -- 05:01 PM EST     0.83 feet Low Tide
Wed -- 05:14 PM EST     Sunset
Wed -- 08:46 PM EST     Moonset
Wed -- 11:01 PM EST     4.98 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
4.43.42.21.20.70.81.62.94.15.15.75.95.64.73.52.21.20.81.22.13.24.24.85

Tide / Current Tables for Charleston Harbor Entrance, South Carolina Current
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Charleston Harbor Entrance
Click for Map
Wed -- 01:12 AM EST     -1.81 knots Max Ebb
Wed -- 04:15 AM EST     0.00 knots Slack
Wed -- 06:56 AM EST     Sunrise
Wed -- 07:00 AM EST     1.56 knots Max Flood
Wed -- 10:13 AM EST     Moonrise
Wed -- 10:45 AM EST     -0.00 knots Slack
Wed -- 02:02 PM EST     -2.15 knots Max Ebb
Wed -- 05:09 PM EST     0.00 knots Slack
Wed -- 05:14 PM EST     Sunset
Wed -- 07:25 PM EST     1.43 knots Max Flood
Wed -- 08:46 PM EST     Moonset
Wed -- 10:36 PM EST     -0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
-1.5-1.8-1.7-1-0.20.61.31.61.310.5-0.2-1.2-1.9-2.1-1.9-1.1-0.10.71.41.30.80.3-0.3

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 (6,6,7,8)
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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.