Saturday, February24, 2018 L-36.com


Marine Weather and Tides
Kiawah Island, 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 6:50AMSunset 6:14PM Saturday February 24, 2018 2:55 AM EST (07:55 UTC) Moonrise 12:47PMMoonset 2:02AM Illumination 66% Phase: Waxing Gibbous; Moon at 9 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- 1253 Am Est Sat Feb 24 2018
Rest of tonight..S winds 5 kt. Patchy fog late.
Sat..S winds 5 kt, increasing to 10 kt in the afternoon. Patchy fog in the morning.
Sat night..S winds 5 to 10 kt.
Sun..SW winds 10 to 15 kt. A slight chance of showers and tstms in the afternoon.
Sun night..SW winds 5 to 10 kt. A slight chance of tstms in the evening. A chance of showers.
Mon..SW winds 5 to 10 kt. A chance of showers.
Mon night..NW winds 5 kt, becoming N after midnight. A chance of showers in the evening.
Tue..NE winds 10 kt.
Tue night..E winds 5 to 10 kt.
Wed..E winds 5 to 10 kt. A chance of showers.
Wed night..S winds 5 to 10 kt. A slight chance of showers. Mariners are reminded that winds and waves higher in and near tstms. Unless otherwise noted, waves 1 foot or less. Charleston harbor water temperature 62 degrees.
AMZ300 1253 Am Est Sat Feb 24 2018
Synopsis for the coastal waters of south coastal south carolina and north coastal georgia.. Unseasonably warm high pressure will prevail into Sunday. A cold front will approach the region late Sunday before moving through Monday. High pressure is then expected until a warm front moves through Wednesday or Wednesday night followed by another cold front late in the week.

7 Day Forecast for Marine Location Near Kiawah Island, SC
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location: 32.59, -80.11     debug


Area Discussion for - Charleston, SC
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Fxus62 kchs 240610
afdchs
area forecast discussion
national weather service charleston sc
110 am est Sat feb 24 2018

Synopsis
Unseasonably warm high pressure will prevail into Sunday. A
cold front will approach the region late Sunday before moving
through Monday. High pressure is then expected until a warm
front moves through Wednesday or Wednesday night followed by
another cold front late in the week.

Near term until 6 am this morning
Overnight: we think stratus and fog will tend to expand along
and to the west of i-95 in ga and west of u.S. 17 in sc. The
should be at least locally dense and perhaps some better areal
coverage will develop prior to daybreak prompting dense fog
advisories. Our forecast in on track and only minor adjustments
were made on the update at midnight.

Short term 6 am this morning through Monday
A summer-like pattern will prevail into Sunday ahead of a cold
front which will approach late Sunday. Temperatures will be well
above normal through Sunday with low rain chances until
possibly late Sunday across inland areas where deeper moisture
and better forcing will align. Rain chances will likely peak
Sunday night and or Monday as the front moves into the area
along with deeper moisture and some upper-level forcing,
although timing of this is a bit tricky given the uncertainty in
timing of upper-level forcing. The front looks to be fairly
weak, as well as the instability, so do not anticipate much
rainfall or even significant thunder potential. Generally rain
amounts should be a quarter of an inch or less, but some places
could pick up a bit more, mainly closer to the pee
dee midlands csra. Also, conditions will support late
night early morning fog through at least Saturday, some of which
could be dense. By Sunday, low-level winds will be stronger and
less supportive of fog. The potential fly in the ointment
though would be if sea fog develops over the atlantic and moves
inland well beyond the morning hours pretty much either day over
the weekend.

Long term Monday night through Friday
A cold front will move offshore Monday night. High pressure
will pass to the north Tuesday, then move offshore Tuesday
night. A weak warm front may develop over the area Wednesday,
followed by a cold front approaching from the west on Thursday.

Aviation 06z Saturday through Wednesday
Both airports wereVFR at 06z with some ground fog noted.

Southerly flow was a tad stronger in the forecast soundings
overnight and this showed up with the somewhat higher fog
stability indices on NAM rap soundings. We maintained good
persistence with the 00z tafs backing off only slightly on
potential MVFR ifr times at ksav. After morning fog disperses
today,VFR will prevail again through this evening.

Extended aviation outlook: flight restrictions are likely each
night morning due to low clouds fog into Sunday. The risk for
restrictions will increase Sunday night Monday as a cold front
moves into the area with low clouds rain.

Marine
Overnight: east-southeast winds will of 5 to 10 knots will
persist. Isolated showers possible, mainly beyond 15-20 nm
offshore. There is a small potential for some sea fog late
tonight, mainly the near shore waters south of the savannah
river, but confidence not high enough to put in forecast. Fog
expected over the land will likely get into the immediate
nearshore waters late tonight.

Saturday through Wednesday: atlantic high pressure will persist
across the area through the weekend. The pressure gradient will
increase a bit as a cold front approaches but winds will mainly
stay below 20 kt. However, southeast swells will continue and
could push seas up near advisory levels toward the gulf stream.

Otherwise, warm and moist air will remain in place and could
lead to the development of sea fog across the cooler nearshore
waters through this weekend. Northerly winds will then develop
by Tuesday behind a passing cold front and could increase close
to advisory levels. Seas will also build, possibly reaching
advisory levels beyond 20 nm.

Climate
Record highs for february 24:
kchs: 81 2017
ksav: 86 2012
kcxm: 81 1930
record high minimums for february 25:
kchs: 62 1992
ksav: 63 1992
kcxm: 61 2017
record highs for february 25:
kchs: 81 2017
ksav: 82 1985
kcxm: 80 1930

Chs watches warnings advisories
Ga... None.

Sc... None.

Marine... None.

Near term...

short term...

long term...

aviation...

marine...

climate...



Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
FBIS1 - Folly Island, SC 13 mi56 min SW 4.1 G 5.1 64°F 1026.3 hPa (-1.0)
CHTS1 16 mi38 min SSW 2.9 G 5.1 65°F 62°F1025.6 hPa
ACXS1 - ACE Basin Reserve, SC 18 mi71 min Calm 61°F 1026 hPa61°F
41033 27 mi48 min SE 1.9 G 5.8 60°F 62°F1024.2 hPa
41029 - Capers Nearshore (CAP 2) 30 mi48 min S 3.9 G 7.8 59°F 64°F1025.4 hPa
41004 - EDISTO - 41 NM Southeast of Charleston, SC 54 mi26 min S 3.9 G 5.8 69°F 68°F1025.3 hPa66°F

Wind History for Charleston, SC
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Charleston Executive Airport, SC10 mi61 minN 09.00 miPartly Cloudy64°F64°F100%1026.1 hPa
Charleston, Charleston Air Force Base, SC23 mi60 minSSW 56.00 miShallow Fog62°F62°F100%1025.5 hPa

Wind History from JZI (wind in knots)
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Last 24hrCalmCalmCalmCalmCalmCalmCalmE8Calm4S7S6E13--SE8SE7SE5S5CalmCalmCalmCalmCalmCalm
1 day agoCalmCalmCalmCalmCalmCalm4S8S7S5
G11
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S9S95S5CalmCalmCalmSE4CalmCalmCalmCalmCalm
2 days agoCalmCalmCalmCalmCalmCalmSE4CalmCalmS8S8S8S7S7S3S4SE4SE7SE4CalmCalmSE5S6S4

Tide / Current Tables for Kiawah River Bridge, South Carolina
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Kiawah River Bridge
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Sat -- 02:02 AM EST     Moonset
Sat -- 02:31 AM EST     5.79 feet High Tide
Sat -- 06:53 AM EST     Sunrise
Sat -- 08:52 AM EST     0.45 feet Low Tide
Sat -- 12:47 PM EST     Moonrise
Sat -- 03:00 PM EST     4.87 feet High Tide
Sat -- 06:13 PM EST     Sunset
Sat -- 09:09 PM EST     -0.08 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
4.15.25.75.75.13.92.71.50.70.50.91.8344.64.94.63.72.61.40.4-0.10.21.2

Tide / Current Tables for Charleston Harbor Entrance, South Carolina Current
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Charleston Harbor Entrance
Click for Map
Sat -- 02:01 AM EST     Moonset
Sat -- 02:50 AM EST     -0.00 knots Slack
Sat -- 06:14 AM EST     -2.20 knots Max Ebb
Sat -- 06:53 AM EST     Sunrise
Sat -- 09:19 AM EST     0.00 knots Slack
Sat -- 11:33 AM EST     1.44 knots Max Flood
Sat -- 12:46 PM EST     Moonrise
Sat -- 03:02 PM EST     -0.00 knots Slack
Sat -- 06:12 PM EST     Sunset
Sat -- 06:34 PM EST     -2.07 knots Max Ebb
Sat -- 09:31 PM EST     0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.510.6-0.1-1-1.8-2.2-2-1.3-0.30.61.31.410.50-0.8-1.5-2-2-1.4-0.50.51.3

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 (2,6,7,8)
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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.