Friday, December15, 2017 L-36.com


Marine Weather and Tides
Folly Beach, 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 7:13AMSunset 5:16PM Friday December 15, 2017 10:20 PM EST (03:20 UTC) Moonrise 4:43AMMoonset 3:48PM Illumination 5% Phase: Waning Crescent; Moon at 27 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- 307 Pm Est Fri Dec 15 2017
Tonight..W winds 10 to 15 kt, becoming nw, then diminishing to 10 kt late.
Sat..N winds 5 to 10 kt, becoming E in the afternoon.
Sat night..SW winds 5 kt, becoming N after midnight.
Sun..NE winds 5 kt, becoming se in the afternoon.
Sun night..Variable winds 5 kt. A slight chance of showers after midnight.
Mon..SW winds 5 kt. A chance of showers.
Mon night..SW winds 5 to 10 kt. A chance of showers.
Tue..W winds 5 to 10 kt. A chance of showers.
Tue night..W winds 10 kt. A chance of showers.
Wed..N winds 5 kt. A slight chance of showers.
Wed night..NE winds 5 kt. Unless otherwise noted, waves 1 foot or less. Charleston harbor water temperature 54 degrees.
AMZ300 307 Pm Est Fri Dec 15 2017
Synopsis for the coastal waters of south coastal south carolina and north coastal georgia.. A dry cold front will move through tonight, followed by high pressure this weekend. Another front will bring unsettled weather to the region Monday into Tuesday, then shift offshore as high pressure rebuilds.

7 Day Forecast for Marine Location Near Folly Beach, SC
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location: 32.66, -79.92     debug


Area Discussion for - Charleston, SC
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Fxus62 kchs 152327
afdchs
area forecast discussion
national weather service charleston sc
627 pm est Fri dec 15 2017

Synopsis
A dry cold front will move through tonight, followed by high
pressure this weekend. Another front will bring unsettled
weather to the region Monday into Tuesday, then shift offshore
as high pressure rebuilds.

Near term until 6 am Saturday morning
A cold front will move through this evening as high pressure
builds from the west. Mid and high clouds will diminish from the
north and west as a mid-level shortwave and upper jet to the
north and west shift farther south and east. Clearing skies and
winds inland along with low-level cold advection will allow
temperatures to get near freezing well inland, especially toward
the csra. Close to the coast lows should be in the lower- mid
40s.

Short term 6 am Saturday morning through Monday
Cool high pressure will settle over the area on Saturday,
pushing offshore Saturday night. While high temps will only be
in the upper 50s Saturday, the return flow on Sunday will push
values into the mid upper 60s.

Sunday night into Monday the upper level flow becomes southwest
and a series of weak shortwaves move into central ga sc. Pwats
around 1" Sunday afternoon increase to about 1.60" by Monday
afternoon. Moist isentropic ascent will overspread inland areas
late Sunday night, expanding across more of the area on Monday.

Scattered showers Sunday night will become numerous across
inland areas on Monday where the greatest forcing and moisture
will overlap. Strong low-level warm air advection will another
unseasonably warm day with highs in the upper 60s to lower 70s.

Long term Monday night through Friday
The front will slowly move across the southeast Monday night into
Tuesday, bringing our area unsettled weather. By Wednesday there is
a split in the models. Some of them move the front offshore and
have dry high pressure building in from the north. The rest
keep the area damp due to remnants of the front remaining nearby
along with low pressure forming offshore. Since the majority of
the models have the drier forecast, that's what we trended
towards on Wednesday. By Thursday moisture starts moving in from
the south, leading to an increased threat of showers.

Aviation 00z Saturday through Wednesday
Vfr. Mid clouds will move over the terminals through early sat
morning in association with the dry cold front. Then winds
become variable 5 kt or less as high pressure settles overhead.

Extended aviation outlook: flight restrictions likely from
Monday afternoon through Tuesday or Wednesday as a front affects
the area.

Marine
Tonight: a cold front will push through the area which will
cause westerly winds to shift to the north-northwest with a modest
surge, mainly up to 20 kt. Could see a few gusts to 25 kt,
mainly over the charleston county nearshore waters and offshore
ga waters. Seas will build slightly but be limited due to the
offshore fetch, mainly peaking around 3 feet in the near shore
and 4-5 ft in the offshore waters.

Saturday through Wednesday: high pressure will prevail Saturday
through Monday before a cold front slowly approaches from the
west. The front will eventually move offshore by late Tuesday or
Wednesday. Winds seas will be quite low over the weekend, then
gradually increase early next week as the gradient strengthens.

However we still show conditions remaining well below advisory
levels through the middle of next week.

Chs watches warnings advisories
Ga... None.

Sc... None.

Marine... None.

Near term... Rjb
short term... Jrl
long term...

aviation... Jrl
marine... Jrl rjb


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
FBIS1 - Folly Island, SC 2 mi81 min W 7 G 9.9 54°F 1018.8 hPa (+2.1)40°F
CHTS1 8 mi51 min W 7 G 13 55°F 54°F1018.9 hPa
41029 - Capers Nearshore (CAP 2) 19 mi73 min W 16 G 19 53°F 55°F1017.7 hPa
ACXS1 - ACE Basin Reserve, SC 29 mi96 min W 2.9 54°F 1019 hPa39°F
41033 37 mi73 min W 14 G 19 53°F 55°F1014.8 hPa
41004 - EDISTO - 41 NM Southeast of Charleston, SC 45 mi41 min W 23 G 29 60°F 72°F1018.2 hPa44°F

Wind History for Charleston, SC
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Charleston Executive Airport, SC5 mi26 minWNW 910.00 miFair54°F37°F54%1019.3 hPa
Mount Pleasant Regional-Faison Field, SC18 mi26 minWNW 910.00 miFair54°F37°F54%1019 hPa
Charleston, Charleston Air Force Base, SC18 mi85 minW 910.00 miOvercast54°F37°F55%1018.4 hPa

Wind History from CHS (wind in knots)
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Last 24hrSW6SW5SW4SW5W4W5CalmSW3CalmSW3W4W4W8SW9W11W9W11W7W6SW6W7W8W9W10
1 day agoSW10SW10SW8SW7SW9W8SW9W7W8W8W9W10W9SW7SW7SW8W5SW9SW5S7S5SW4SW6S4
2 days agoNW13
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Tide / Current Tables for Folly Island (outer coast), South Carolina
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Folly Island (outer coast)
Click for Map
Fri -- 04:43 AM EST     Moonrise
Fri -- 05:43 AM EST     5.67 feet High Tide
Fri -- 07:14 AM EST     Sunrise
Fri -- 11:49 AM EST     0.17 feet Low Tide
Fri -- 03:48 PM EST     Moonset
Fri -- 05:15 PM EST     Sunset
Fri -- 05:46 PM EST     4.89 feet High Tide
Fri -- 11:54 PM EST     -0.03 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.31.22.53.84.85.55.65.24.12.81.50.50.20.71.834.14.74.94.53.52.41.20.3

Tide / Current Tables for Charleston Harbor Entrance, South Carolina Current
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Charleston Harbor Entrance
Click for Map
Fri -- 12:00 AM EST     0.00 knots Slack
Fri -- 02:21 AM EST     1.45 knots Max Flood
Fri -- 04:43 AM EST     Moonrise
Fri -- 06:25 AM EST     -0.00 knots Slack
Fri -- 07:14 AM EST     Sunrise
Fri -- 09:31 AM EST     -2.42 knots Max Ebb
Fri -- 12:31 PM EST     0.00 knots Slack
Fri -- 02:27 PM EST     1.35 knots Max Flood
Fri -- 03:48 PM EST     Moonset
Fri -- 05:14 PM EST     Sunset
Fri -- 06:19 PM EST     -0.00 knots Slack
Fri -- 09:43 PM EST     -2.06 knots Max Ebb
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
-011.41.41.41.10.4-0.6-1.6-2.3-2.3-1.7-0.60.51.31.31.10.80.2-0.5-1.3-1.9-2-1.6

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 (22,6,7,8)
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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.