Thursday, April26, 2018 L-36.com


Marine Weather and Tides
Barnwell, SC

Version 3.4
What's New / NOTES
3/3/2018 - There is a new GOES Satellite for the east coast that required rewriting that part of the code. Please report any issues.
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.

Sunrise 6:41AMSunset 8:07PM Thursday April 26, 2018 7:18 AM EDT (11:18 UTC) Moonrise 3:52PMMoonset 3:56AM Illumination 85% Phase: Waxing Gibbous; Moon at 11 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- 709 Am Edt Thu Apr 26 2018
Today..W winds 5 kt early, becoming S 10 kt.
Tonight..S winds 5 to 10 kt. A chance of showers after midnight.
Fri..SW winds 5 to 10 kt.
Fri night..W winds 5 to 10 kt.
Sat..W winds 5 to 10 kt.
Sat night..W winds 5 to 10 kt.
Sun..N winds 5 to 10 kt.
Sun night..NE winds 5 kt.
Mon..NE winds 5 to 10 kt.
Mon night..SE winds 5 kt. Unless otherwise noted, waves 1 foot or less. Charleston harbor water temperature 67 degrees.
AMZ300 709 Am Edt Thu Apr 26 2018
Synopsis for the coastal waters of south coastal south carolina and north coastal georgia.. Dry cold fronts will move through the region Friday night and again Saturday night. High pressure will then prevail through next week.

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 261055
afdcae
area forecast discussion
national weather service columbia sc
655 am edt Thu apr 26 2018

Synopsis
A low pressure system will move through the area tonight into
early Friday. High pressure will build across the region this
weekend into early next week bringing dry weather and seasonable
temperatures.

Near term until 6 pm this evening
Upper low currently over arkansas will move east across
mississippi, alabama, and northwestern georgia today. Associated
surface low will be slightly out ahead of the upper low. This
system will bring a warm frontal boundary north through the area
this morning, while the attendant cold front approaches the
region from the west through the day. Surface heating combined
with a cool pool aloft and weak instability will produce
convection ahead of the surface low and front. Have slowed down
the timing a bit based on high- resolution model output with
activity generally arriving after 20z. The storm prediction
center has most of the area outlooked for a marginal risk of
severe storms. 0 to 6 km shear appears moderate to strong. Hail
and locally damaging winds are the primary threats. Model
soundings show a cap during the afternoon which will be a
limiting factor. Despite mostly cloudy skies this afternoon,
expect high temperatures to rise into the middle to upper 70s
given warm air advection ahead of the front.

Short term 6 pm this evening through Friday night
The main upper and surface lows are forecast to move through
the area during the night. Showers and isolated thunderstorms
will be possible for much of the the night before diminishing
towards Friday morning. Can not rule out a few lingering showers
early Friday before drying moves in. The atmosphere will dry
out Friday night as another trough of low pressure crosses the
area.

Highs on Friday in the mid 70s. Overnight lows will be in the
mid 50s to around 60 tonight, then in the lower 50s Friday
night.

Long term Saturday through Wednesday
Really not much change for the longer term forecast. Dry weather
still expected to prevail into the middle of next week. A broad
upper level trough over the eastern CONUS will slowly move off
the coast into Monday. Models indicting upper ridge will finally
begin to build into the easter portions of the country by the
middle of next week, bringing warmer temperatures to the area.

Daytime highs in the mid and upper 70s will moderate to the
lower 80s by midweek. Overnight lows will be in the upper 40s
and lower 50s.

Aviation 12z Thursday through Monday
Vfr conditions are expected for a majority of the 24-hr taf
period outside of showers and thunderstorms.

A low pressure system will approach the area from the west
today and move through the region tonight. A warm front will
lift northward across the area this morning, with the main cold
front swinging through tonight. Moisture and clouds will be on
the increase today ahead of the approaching system. Convection
is expected to develop late this afternoon and continue through
tonight, with chances diminishing early Friday morning as the
system lifts away from the area. Have included vcsh at 23z at
cae cub ags dnl and 02z at ogb, but still some uncertainty
regarding exact timing. Will continue to monitor and update as
confidence in exact timing of the system improves. Models
indicate potential for lower ceilings developing overnight so
have included MVFR ceilings at cae cub at 06z and 09z at
ags dnl.

Extended aviation outlook
A low pressure system may bring restrictions early Friday.

Otherwise, no significant restrictions to aviation expected
through Monday.

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 mi38 min Calm G 1 53°F
LMFS1 - Lake Murray SC 61 mi58 min Calm G 1 59°F 1010.2 hPa

Wind History for Charleston, SC
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SW5
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G9
SW4

Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Barnwell Regional Airport, SC2 mi23 minN 010.00 miFair52°F50°F94%1010.8 hPa

Wind History from BNL (wind in knots)
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Last 24hr------------------------------------CalmCalmCalmCalmCalmCalm
1 day agoS5SW3SW6SW7SW5SW8SW6
G13
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SW9SW8
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SW9SW12SW8SW5SW5CalmSW5------------
2 days agoE12E16
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E10E10E9NE7E7E7SW7E7SE5CalmCalmCalmCalm

Tide / Current Tables for Cuckolds Creek, Combahee River, South Carolina
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Cuckolds Creek
Click for Map
Thu -- 04:09 AM EDT     -0.17 feet Low Tide
Thu -- 04:53 AM EDT     Moonset
Thu -- 06:40 AM EDT     Sunrise
Thu -- 10:37 AM EDT     3.79 feet High Tide
Thu -- 04:36 PM EDT     -0.40 feet Low Tide
Thu -- 04:49 PM EDT     Moonrise
Thu -- 08:00 PM EDT     Sunset
Thu -- 11:16 PM EDT     3.85 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
3.12.21.20.3-0.200.61.62.53.33.73.73.32.51.50.5-0.3-0.40.10.91.92.93.53.8

Tide / Current Tables for Tulifiny River, I-95 bridge, South Carolina
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Tulifiny River
Click for Map
Thu -- 03:28 AM EDT     -0.11 feet Low Tide
Thu -- 04:53 AM EDT     Moonset
Thu -- 06:41 AM EDT     Sunrise
Thu -- 09:18 AM EDT     5.39 feet High Tide
Thu -- 03:54 PM EDT     -0.20 feet Low Tide
Thu -- 04:50 PM EDT     Moonrise
Thu -- 08:01 PM EDT     Sunset
Thu -- 09:57 PM EDT     5.55 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
3.21.90.7-000.92.23.74.85.45.34.63.62.41.10.1-0.20.31.52.94.35.25.55.2

Weather Map and Satellite Images
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wmap_A
GOES Local Image of Southeast    EDIT
NOTE: East coast views moved to GEOS-16. They are experimental and not well supported by NOAA so they may not be correct so be warned. This change required redoing a large amount of the GOES code. If the image you are expecting is not showing, please let me know. You may need to use the EDIT function to update your location.
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Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Columbia, SC (7,2,3,4)
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Ground Weather Radar Station Charleston, SC
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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.