Tuesday, March28, 2017 L-36.com


Marine Weather and Tides
Barnwell, 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 7:16AMSunset 7:46PM Tuesday March 28, 2017 9:55 AM EDT (13:55 UTC) Moonrise 6:49AMMoonset 7:33PM Illumination 1% Phase: Waxing Crescent; 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- 659 Am Edt Tue Mar 28 2017
Today..SW winds 5 to 10 kt...increasing to 15 kt with gusts to 20 kt late. A slight chance of showers this morning.
Tonight..SW winds 5 to 10 kt.
Wed..NW winds 5 kt...becoming ne in the afternoon.
Wed night..E winds 5 to 10 kt.
Thu..E winds 5 to 10 kt...increasing to 15 kt in the afternoon.
Thu night..E winds 10 kt. A chance of showers with a slight chance of tstms.
Fri..S winds 10 to 15 kt. Showers and tstms likely.
Fri night..SW winds 10 to 15 kt. A chance of showers with a slight chance of tstms.
Sat..W winds 5 to 10 kt.
Sat night..NW winds around 5 kt. 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...63 degrees.
AMZ300 659 Am Edt Tue Mar 28 2017
Synopsis for the coastal waters of south coastal south carolina and north coastal georgia.. A weak cold front will stall over or near the area on Wednesday before moving back north Thursday night into Friday as a warm front. Another cold front will move through Friday night into Saturday followed by drier high pressure Sunday. Unsettled weather could return as soon as next Monday.

7 Day Forecast for Marine Location Near Barnwell, SC
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location: 33.23, -81.36     debug


Area Discussion for - Columbia, SC
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Fxus62 kcae 281045
afdcae
area forecast discussion
national weather service columbia sc
645 am edt Tue mar 28 2017

Synopsis
A series of troughs moving through the area today will trigger
some showers and possibly a few thunderstorms. A cold front will
move through the area tonight. High pressure will build into
the region Thursday from the north while moisture increases
across the area. This may set up unsettled conditions for the
later half of the week with below normal temperatures possible
Thursday but warmer than normal over the weekend.

Near term /until 6 pm this evening/
Initial band of showers and thunderstorms associated with upper
energy is departing the forecast area this morning to the
northeast while a secondary broken band is weakening as it
moves into the western midlands. Hi-res models show these
showers continuing to weaken this morning with a brief break in
shower activity through around midday. The upper trough axis
will shift east of the forecast area by midday with an upper
ridge beginning to build over the southeastern states in its
wake. The strongest dynamics will be north of the area but still
expect scattered showers and a few thunderstorms to develop
early this afternoon. Instability appears limited with LI values
around -1 to -2. Drier air will begin moving into the forecast
area from the west by late afternoon with model precipitable
water values in the western portion of the area dropping below
an inch. A weak surface front will be approaching from the
northwest late in the day but with limited moisture and the
developing upper ridge, convective development will be limited.

Shower activity expected to begin diminishing by 20z. Warm air
advection ahead of the approaching frontal boundary will promote
afternoon high temperatures in the lower to middle 80s.

Short term /6 pm this evening through Wednesday night/
With drier air working its way into the area behind the front
early in the evening, showers/storms will be limited and pushing
out of the region. Skies should be clearing with the drier
airmass. Winds may remain around 5 mph through the night
tonight behind the front. Overnight lows a few degrees cooler
than previous few nights, with readings in the middle to upper
50s.

By Wednesday and Wednesday night, ridging both aloft and at the
surface will be over the area, keeping conditions dry.

Temperatures through the day will warm well above normal with
the expected subsidence over the region, and with plenty of
sunshine. Readings climb into the lower to middle 80s. Moisture
Wednesday night may be on the increase across the north, and can
not rule out an isolated shower late in the night or towards
morning. Lows in the middle to upper 50s.

Long term /Thursday through Monday/
Rain returns back to the forecast for Thursday and Friday as a
strong system begins pushing towards the region. Upper flow
becomes out of the southwest again ahead of the upper low, and
this will bring gulf moisture northward into the area. Early
in the day Thursday, still anticipate a dry forecast, but pops
will be on the increase during the afternoon and into the
evening. Highest pops in the csra and western midlands Thursday
afternoon. The deep upper low will move from the mississippi
valley to the east Thursday night into Friday. Warm front may
move north Thursday night through Friday. Models indicting good
chance to likely pops through Friday. Potential exists for a few
strong thunderstorms Friday afternoon. Dry conditions over the
weekend, although moisture may return early next week. Temperatures
remain above normal.

Aviation /10z Tuesday through Saturday/
Vfr conditions expected throughout the 24-hr TAF period outside
of a possible shower or thunderstorm passing over the terminals
today.

Regional radar this morning shows the first band of showers
departing the forecast area while the next broken band weakens
as it moves into the western portion of the area. Once the
remnants of this band shift east, hi-res models show a break in
shower activity late this morning through midday. Potential for
scattered convection after 16z with highest potential further
north. Have included vicinity showers through late afternoon
with no flight restrictions. Will monitor radar and amend as
necessary. Drier air will move into the area late this
afternoon/evening with skies becoming mostly clear and the
threat of showers/storms diminishing. Light southerly winds this
morning will pick up out of the southwest to around 10 to 15
mph this afternoon. Winds will diminish with sunset becoming
northerly overnight as the frontal boundary shifts east. Models
indicate potential for MVFR restrictions in fog briefly early
Wednesday morning, but believe threat is low given drier air
mass moving into the area and 20 knot low level jet.

Extended aviation outlook... Restrictions possible Thursday as
wedge conditions develop over the area. Increasing confidence in
showers and thunderstorms Thursday night and Friday morning as a
cold front crosses the region.

Cae watches/warnings/advisories
Ga... None.

Sc... None.



Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
CHDS1 - Strom Thurmond Dam, SC 54 mi76 min S 2.9 G 7 64°F 1017.6 hPa
LMFS1 - Lake Murray SC 61 mi36 min SSW 6 G 7 63°F 1014.2 hPa

Wind History for Charleston, SC
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Barnwell Regional Airport, SC2 mi61 minSSW 510.00 miFair66°F60°F83%1016.3 hPa

Wind History from BNL (wind in knots)
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Last 24hrSW7SW12SW6S47S6S7
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1 day agoSE6S6SE12S6
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Tide / Current Tables for Cuckolds Creek, Combahee River, South Carolina
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Cuckolds Creek
Click for Map
Tue -- 01:21 AM EDT     4.09 feet High Tide
Tue -- 07:15 AM EDT     Sunrise
Tue -- 07:19 AM EDT     -1.55 feet Low Tide
Tue -- 07:46 AM EDT     Moonrise
Tue -- 01:51 PM EDT     3.98 feet High Tide
Tue -- 07:40 PM EDT     Sunset
Tue -- 07:41 PM EDT     -1.89 feet Low Tide
Tue -- 08:29 PM EDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
3.64.13.93.21.90.5-0.8-1.5-1.4-0.60.723.13.843.52.51-0.5-1.6-1.9-1.20.11.6

Tide / Current Tables for Tulifiny River, I-95 bridge, South Carolina
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Tulifiny River
Click for Map
Tue -- 12:00 AM EDT     5.95 feet High Tide
Tue -- 06:35 AM EDT     -0.67 feet Low Tide
Tue -- 07:16 AM EDT     Sunrise
Tue -- 07:47 AM EDT     Moonrise
Tue -- 12:29 PM EDT     5.78 feet High Tide
Tue -- 06:57 PM EDT     -0.76 feet Low Tide
Tue -- 07:41 PM EDT     Sunset
Tue -- 08:30 PM EDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
5.95.64.63.31.80.4-0.5-0.60.31.93.64.95.75.753.92.40.9-0.3-0.8-0.21.43.24.9

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 Columbia, SC (9,2,3,4)
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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.