Sunday, August25, 2019 L-36.com


Marine Weather and Tides
Barnwell, SC

Version 3.4
NOTICE
7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports.
6/2/2019. Many thanks to a user for reporting an error on one of the Edit pages. The switch to PHP 7.2 caused many pages that previously worked to quit working. I fixed many but I still depend on users to report ones I missed. Please report errors HERE or send an email to me at L-36.com. Allen

Sunrise 6:54AMSunset 8:03PM Sunday August 25, 2019 6:03 PM EDT (22:03 UTC) Moonrise 12:38AMMoonset 3:08PM Illumination 22% Phase: Waning Crescent; Moon at 25 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- 341 Pm Edt Sun Aug 25 2019
Tonight..NE winds 15 kt with gusts to 20 kt.
Mon..NE winds 10 to 15 kt.
Mon night..NE winds 5 to 10 kt.
Tue..NE winds 5 kt, becoming se in the afternoon. A chance of showers and tstms in the afternoon.
Tue night..S winds 5 kt. A chance of showers and tstms.
Wed..S winds 5 kt. A chance of showers and tstms.
Wed night..S winds 5 kt, becoming W after midnight. A chance of showers and tstms.
Thu..NE winds 5 to 10 kt. A chance of showers and tstms.
Thu night..E winds 5 to 10 kt. A chance of showers and tstms.
Fri..NE winds 5 to 10 kt. A chance of showers and tstms.
Fri night..E winds 5 to 10 kt. A chance of showers and tstms. Mariners are reminded that winds and waves higher in and near tstms. Unless otherwise noted, waves 1 foot or less. Charleston harbor water temperature 85 degrees.
AMZ300 341 Pm Edt Sun Aug 25 2019
Synopsis for the coastal waters of south coastal south carolina and north coastal georgia.. High pressure will prevail inland, while a stationary front lingers south and east of the area early this week. Meanwhile, low pressure is expected to pass well off the southeast coast. A cold front will impact the region later in the 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 251829
afdcae
area forecast discussion
national weather service columbia sc
229 pm edt Sun aug 25 2019

Synopsis
A front will be stalled just south of the forecast area through
Monday. The front will become a warm front and may lift northward
and into the area Tuesday and linger Wednesday, bringing a
chance of rain. Low pressure tracking northeastward off the
coast will have little impact on our weather. An approaching
cold front will move into the area by Thursday.

Near term through tonight
Stalled cold front remains near the fl ga border while high
pressure centered over new england continues to ridge into the
forecast area with northeasterly surface winds. Very little
instability today due to cloud cover and cool dry advection from
the north and shallow moisture despite pwats ranging from
1.5-1.9 inches over the area, therefore not expecting any
precipitation.

An area of low pressure remains well off the coast and
continues to be monitored by NHC which gives this disturbance a
60 percent chance of development over the next 48hrs but no
impact is expected for our area. Temperatures started out quite
cool in the 60s but with breaks in the clouds and rising
ceilings they have risen into the mid to upper 70s to around 80
degrees. MAX temperatures are tricky and dependent on the cloud
cover. Areas where the clouds break for a period of time could
get into the mid 80s but most locations expected to remain in
the upper 70s to lower 80s.

Tonight... Some uncertainty on cloud cover and whether or not
stratus will redevelop or not but likely should see plenty of
clouds overnight with continued northeasterly cool advection.

Expect overnight lows to fall back into the 60s across the
region with no rain.

Short term Monday through Tuesday night
Cloudy and somewhat cool conditions will persist on Monday with
surface high pressure wedging into the forecast area from the
north with the front stalled south of the area. The wedge
pattern and weak lift support little instability so do not
expect thunderstorms, but showers are expected to move in from
the south late in the day and overnight. The high temperature
guidance is likely too high because of the wedge pattern Monday.

Highs will likely be in the upper 70s to low 80s.

Thunderstorm chances will be better on Tuesday as the stalled
front returns in the form of a warm front. A dampening mid-
level shortwave trough is also forecast to move into the
region. However, cloudiness should help limit instability and
shear will be weak at only around 20 to 25 kts, so there is a
diminished chance of severe thunderstorms. Temperatures should
warm up into the mid 80s.

Long term Wednesday through Saturday
Upper level troughing will be over the eastern u.S. Through the
period, bringing unsettled weather. A cold front will move
through the region Wednesday, and then stall near the coast for
Thursday and Friday. The closeness of the front supports keeping
a chance of showers and thunderstorms in the forecast. Lee
troughing and onshore flow will bring diurnal convection on
Saturday, and another front is expected to move in on Sunday.

Temperatures will rebound to near normal with highs in the upper
80s to low 90s and lows in the upper 60s to low 70s.

Aviation 18z Sunday through Friday
Cold front has stalled across southern ga with widespread MVFR
stratus conditions all terminals and northeast winds 5 to 10
knots. Ceilings continue to rise through the afternoon and MVFR
cigs should becomeVFR by 21-22z. Northeast winds will persist
through the overnight hours. Fog is not a concern given the
expecting mixing through the night aided by a 25 knot low level
jet.

The main aviation concern through the period is whether or not
cigs will drop back into MVFR range overnight into Monday
morning or remainVFR. All guidance suggests that CIGS will
remainVFR but experience suggests there is a reasonable chance
cigs will drop back down. Decided to go ahead and bring cigs
back down to high MVFR overnight and then mix out toVFR after
15z Monday.

Extended aviation outlook... Potential for ifr or MVFR
conditions during much of the outlook period with a front
remaining in 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 mi44 min NNE 9.9 G 14 77°F
LMFS1 - Lake Murray SC 61 mi44 min NNE 1.9 G 4.1 77°F 1016.6 hPa

Wind History for Charleston, SC
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Barnwell Regional Airport, SC2 mi69 minNE 910.00 miOvercast79°F66°F65%1016.6 hPa

Link to 5 minute data for KBNL

Wind History from BNL (wind in knots)
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Last 24hrSE7N11N12N13NE9N9NE6----------NE8
G13
NE9N8NE8NE7--N9N7NE11N9NE9NE8
1 day agoNE4CalmE4CalmCalm------CalmS4NE3CalmCalmCalmNE4E5E3CalmE4E4NE4NE5CalmE4
2 days agoS7
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S6S6S4Calm------S5CalmSW4CalmCalmCalmCalmSW5N4SW3CalmCalmSW7NE5
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CalmCalm

Tide / Current Tables for Tulifiny River, I-95 bridge, South Carolina
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Tulifiny River
Click for Map
Sun -- 01:14 AM EDT     1.05 feet Low Tide
Sun -- 01:37 AM EDT     Moonrise
Sun -- 06:53 AM EDT     Sunrise
Sun -- 07:02 AM EDT     4.59 feet High Tide
Sun -- 01:31 PM EDT     0.49 feet Low Tide
Sun -- 04:04 PM EDT     Moonset
Sun -- 07:35 PM EDT     5.51 feet High Tide
Sun -- 07:57 PM EDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.41.11.21.92.83.74.34.64.43.72.81.91.10.60.61.22.43.74.85.45.554.13.1

Tide / Current Tables for Cuckolds Creek, Combahee River, South Carolina
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Cuckolds Creek
Click for Map
Sun -- 01:36 AM EDT     Moonrise
Sun -- 01:55 AM EDT     2.50 feet Low Tide
Sun -- 06:52 AM EDT     Sunrise
Sun -- 08:23 AM EDT     3.21 feet High Tide
Sun -- 02:12 PM EDT     1.15 feet Low Tide
Sun -- 04:04 PM EDT     Moonset
Sun -- 07:56 PM EDT     Sunset
Sun -- 08:56 PM EDT     3.85 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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2.82.62.52.52.72.833.13.23.22.82.41.81.41.21.21.62.22.83.43.73.93.73.4

Weather Map and Satellite Images
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wmap_A
GOES Local Image of    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 (18,4,5,8)
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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.