Sunday, March26, 2017 L-36.com


Marine Weather and Tides
Folly Beach, SC

Version 3.4
What's New / NOTES
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.
3/12/2015 - Added section for Gulf current for users in the GMZ marine zones.
This was requested by a user. If you have requests, please let me know.

Sunrise 7:12AMSunset 7:37PM Sunday March 26, 2017 4:43 PM EDT (20:43 UTC) Moonrise 5:25AMMoonset 5:16PM Illumination 1% Phase: New Moon; Moon at 29 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- 306 Pm Edt Sun Mar 26 2017
Tonight..SE winds around 5 kt.
Mon..S winds around 5 kt.
Mon night..S winds 5 kt. A slight chance of showers and tstms.
Tue..SW winds 5 to 10 kt. A chance of showers... Mainly in the afternoon. A slight chance of tstms.
Tue night..SW winds 5 to 10 kt. A chance of showers with a slight chance of tstms in the evening.
Wed..W winds 5 kt.
Wed night..S winds 5 kt.
Thu..SE winds 5 to 10 kt. A slight chance of showers and tstms.
Thu night..SE winds 10 kt. A chance of showers and tstms.
Fri..S winds 10 kt. A chance of showers and tstms.
Fri night..S winds 10 kt. A chance of showers with a slight chance of tstms. 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...61 degrees.
AMZ300 306 Pm Edt Sun Mar 26 2017
Synopsis for the coastal waters of south coastal south carolina and north coastal georgia.. Atlantic high pressure will weaken early this week. A weak cold front will stall over the area during the middle of the week, then shift back north as a warm front Friday. Another cold front should move through Saturday or Saturday night followed by drier high pressure Sunday.

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 261626 cca
afdchs
area forecast discussion... Corrected
national weather service charleston sc
1226 pm edt Sun mar 26 2017

Synopsis
Atlantic high pressure will weaken early this week. A
weak cold front will stall over the area during the middle of the
week, then shift back north as a warm front Friday. Another cold
front should move through Saturday or Saturday night followed by
drier high pressure Sunday.

Near term /until 6 pm this evening/
Atlantic high pressure will maintain its influence on the region
today. Earlier shower activity associated with a dampening
shortwave has dissipated, but some light sprinkles have recently
developed along i-95 from savannah south to darien along the sea
breeze. Satellite presentation of this activity is already
starting to degrade so suspect broad subsidence aloft is taking
its toll. While a sprinkle or two can not be completely ruled out
along the sea breeze this afternoon, mentionable pops are not
justified at this time. Adjustments were made to sky cover and
winds, but none were significant for the early afternoon update.

Short term /6 pm this evening through Wednesday/
Tonight: the axis of a weak sfc ridge will pivot west over the
ga/sc coast. The sfc pattern will support light SE onshore flow
across the forecast area through the night. At the mid levels,
heights should slowly increase in the wake of the shallow s/w. I
will keep pops limited to the single digits. Low temperatures
are forecast to range in the upper 50s to around 60.

Monday through Wednesday: atlantic high pressure will weaken
through the period, especially by Wednesday when a weak cold
front is expected to push offshore around the mid-atlantic but
struggle to move all the way through southeast ga. Expect a
decent chance of showers and thunderstorms Monday and Tuesday
when instability will be greatest and the sea breeze and upper
shortwave energy will be present. However, no appreciable
rainfall and/or severe weather is anticipated at this time.

Temperatures should push into the lower to mid 80s inland each
afternoon, likely warmest across interior southeast ga. Wouldn't
be surprised if upper 80s occurred Wednesday, mainly interior
ga, due to compressional heating with the front and offshore
winds. Onshore winds will keep beach areas much cooler, mainly
in the 60s.

Long term /Wednesday night through Saturday/
The stalled front should shift north as a warm front Friday followed
by a cold frontal passage Saturday or Saturday night. Drier high
pressure should then return later in the weekend. Showers and
thunderstorms will be possible, mainly Thursday through Friday
night, with temperatures running above normal through at least
Saturday.

Aviation /16z Sunday through Thursday/
Vfr. Might see some shallow ground fog at both terminals just
before sunrise, but no impacts are anticipated.

Extended aviation outlook: mainlyVFR. Brief restrictions possible
in any showers/thunderstorms, mainly mon/tue/thu/fri. Low
probability of restrictions due to early morning low clouds and/or
fog.

Marine
Today: increased seas by a foot given latest marine observations
and latest nwps and ww3 output. Seas will continue 2-4 ft
nearshore and 4-5 ft offshore.

Monday through Friday: no significant concerns with atlantic high
pressure generally in control until a weakening cold front moves
into the area Wednesday. The front will transition into a warm front
as it moves back north Friday. Seas could reach 6 feet near the gulf
stream through Tuesday due to swells from low pressure well
offshore. Advisories will be possible across the outer ga waters
through Tuesday and then for more of the area Thursday night/Friday
as strengthening southerly winds build seas to 6 feet again.

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
FBIS1 - Folly Island, SC 2 mi43 min SSE 5.1 G 5.1 68°F 1022.2 hPa (-1.6)63°F
CHTS1 8 mi43 min SSE 11 G 14 71°F 62°F1021.5 hPa (-1.8)
41029 - Capers Nearshore (CAP 2) 19 mi35 min SE 3.9 G 7.8 67°F 1021.4 hPa
ACXS1 - ACE Basin Reserve, SC 29 mi58 min SSE 4.1 77°F 1021 hPa59°F
41033 37 mi35 min SE 5.8 G 9.7 67°F 64°F1020.9 hPa
41004 - EDISTO - 41 NM Southeast of Charleston, SC 45 mi53 min SSE 9.7 G 12 72°F 74°F4 ft1021.3 hPa (-1.5)55°F

Wind History for Charleston, SC
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NE16
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Charleston Executive Airport, SC5 mi48 minSSE 1210.00 miFair77°F59°F54%1021.3 hPa
Mount Pleasant Regional-Faison Field, SC18 mi48 minS 10 G 1610.00 miFair75°F57°F54%1021.3 hPa
Charleston, Charleston Air Force Base, SC18 mi1.8 hrsSSW 8 G 1510.00 miPartly Cloudy78°F52°F40%1021.2 hPa

Wind History from CHS (wind in knots)
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Last 24hrSE13SE11SE13SE7SE6E5CalmCalmCalmSE8SE5SE4CalmCalmCalmCalmSE4S8S8
G18
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1 day agoSE13SE11SE12SE8SE6SE7SE6SE3CalmNE3CalmSE4SE5CalmCalmCalmSE3SE7SE10SE10SE14
G18
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SE14SE12
2 days agoE8E12E12E14E9NE7NE6E9NE6NE6NE6NE6NE8NE8NE4N3NE76SE8SE13
G18
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SE12
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G18

Tide / Current Tables for Folly Island (outer coast), South Carolina
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Folly Island (outer coast)
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Sun -- 12:55 AM EDT     -0.24 feet Low Tide
Sun -- 06:24 AM EDT     Moonrise
Sun -- 07:15 AM EDT     Sunrise
Sun -- 07:20 AM EDT     5.61 feet High Tide
Sun -- 01:24 PM EDT     -0.42 feet Low Tide
Sun -- 06:15 PM EDT     Moonset
Sun -- 07:32 PM EDT     5.63 feet High Tide
Sun -- 07:35 PM EDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.1-0.20.21.42.84.25.15.65.54.73.41.80.4-0.3-0.30.72.23.84.95.55.64.93.72.2

Tide / Current Tables for Charleston Harbor Entrance, South Carolina Current
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Charleston Harbor Entrance
Click for Map
Sun -- 01:51 AM EDT     0.00 knots Slack
Sun -- 04:19 AM EDT     1.78 knots Max Flood
Sun -- 06:24 AM EDT     Moonrise
Sun -- 07:15 AM EDT     Sunrise
Sun -- 08:07 AM EDT     -0.00 knots Slack
Sun -- 11:17 AM EDT     -2.69 knots Max Ebb
Sun -- 02:17 PM EDT     0.00 knots Slack
Sun -- 04:40 PM EDT     1.92 knots Max Flood
Sun -- 06:15 PM EDT     Moonset
Sun -- 07:35 PM EDT     Sunset
Sun -- 08:20 PM EDT     -0.00 knots Slack
Sun -- 11:35 PM EDT     -2.73 knots Max Ebb
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
-1.9-0.90.21.21.71.71.410.1-1-2.1-2.7-2.5-1.6-0.40.91.71.91.51.10.4-0.8-1.9-2.6

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 (16,3,4,5)
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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.