Sunday, November19, 2017 L-36.com


Marine Weather and Tides
Barnwell, 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 7:01AMSunset 5:23PM Sunday November 19, 2017 1:35 AM EST (06:35 UTC) Moonrise 7:50AMMoonset 6:33PM Illumination 0% Phase: New Moon; Moon at 0 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- 1258 Am Est Sun Nov 19 2017
.small craft advisory in effect until 7 am est this morning...
Rest of tonight..SW winds 15 to 20 kt with gusts to 25 kt. Waves 1 to 2 ft. A chance of showers.
Sun..NW winds 15 to 20 kt in the morning, diminishing to 10 to 15 kt. A chance of showers in the morning.
Sun night..N winds 5 to 10 kt.
Mon..NE winds 5 to 10 kt.
Mon night..E winds 5 kt.
Tue..E winds 5 kt. A slight chance of showers in the morning, then a chance of showers in the afternoon.
Tue night..NE winds 5 kt. A chance of showers.
Wed..N winds 5 to 10 kt. A slight chance of showers.
Wed night..NE winds 10 kt. A slight chance of showers.
Thu..NE winds 10 to 15 kt. A slight chance of showers.
Thu night..NE winds 10 to 15 kt. A slight chance of showers. Unless otherwise noted, waves 1 foot or less. Charleston harbor water temperature 61 degrees.
AMZ300 1258 Am Est Sun Nov 19 2017
Synopsis for the coastal waters of south coastal south carolina and north coastal georgia.. A cold front will push offshore early Sunday, then stall south and east of the region. High pressure will build over the area and prevail through early next week. A series of low pressure systems could then track northeast along the stationary front, producing unsettled conditions later Tuesday through mid to late week. High pressure will expand over the region late week or next weekend.

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 190527
afdcae
area forecast discussion
national weather service columbia sc
1227 am est Sun nov 19 2017

Synopsis
A cold front will move rapidly across the region tonight with
scattered showers and breezy conditions. A dry and cooler air
mass will build over the area Sunday and Monday. Moisture will
return mid to late week as the weak low pressure develops over
the gulf of mexico.

Near term until 7 am this morning
A positively tilted upper trough over the mississippi valley will
move across the region overnight and into Sunday. Shortwave
trough appears to weaken as it crosses the area with stronger
dynamics to our north. The trough will push a cold front through
the area late tonight. Front appears to move through the area
between 06z and 10z with scattered showers. Of concern is the
very strong low-level shear with 60 kts at 850 mb. Instability
appears very limited however so thunderstorms are not expected.

Moisture also appears limited with maximum precipitable water
only up to around 1.5 inches along the frontal boundary.

Highest precipitation chances are in the northern csra,
piedmont and north midlands where upper-level forcing may be
stronger. Gusty winds expected overnight with strong mixing and
a lake wind advisory has been issued. The showers are expected
to clear the midlands and csra by 12z Sunday. Temperatures
should remain mild ahead of the front because of mixing, with
lows from the upper 40s west to the mid 50s east.

Short term 7 am this morning through 6 pm Monday
On Sunday expect cold advection and clear skies. Breezy
conditions thru the morning, with diminishing winds during the
afternoon as the pressure gradient relaxes. Daytime highs will
be mostly in the lower 60s with downslope flow offsetting cold
advection somewhat. Temperatures near freezing in some areas
Sunday night especially northern and central counties. Patchy
frost possible may be possible elsewhere late Sunday night.

Dry and cooler air mass over the area Monday with temperatures
ranging from around 60 north to the lower 60s south.

Long term Monday night through Saturday
The upper level pattern remains somewhat amplified later in the
week, but large model differences result in a lower than normal
confidence forecast. Latest GFS and canadian models are leaning
toward some sort of low pressure development in the gulf of
mexico with a cut-off upper low over the gulf states by Thursday.

Moisture appears to focus early along old frontal boundary
across florida to the georgia and carolina coastline. Will keep
a small chance for rain mid to late week including thanksgiving
although confidence remains low with large spread in guidance.

Leaning toward cooler than normal for thanksgiving given the
pattern and possibility of rain. Overall, temperatures generally
near normal through mid-week, then below normal through
Saturday.

Aviation 06z Sunday through Thursday
Main near term concern is breezy conditions and llws. Frontal
boundary expected to move through the TAF sites 07-08z time frame.

Narrow band of showers along the front. Recent trends indicate the
activity may be gradually weakening. However, some wind gusts in
excess of 30 kts will be possible as the band moves through. It is
also expected to provide a tempo period of MVFR vsbys. MVFR cigs
expected with the activity and for a period of time behind it,
along with some lingering light rain. Winds will shift to wnw
to NW behind the boundary. Expect a return toVFR later this
morning, with gradually reducing wind speeds during the day.

Extended aviation outlook... Dry high pressure will be centered in
the region Monday. An onshore flow will develop Tuesday as the high
shifts farther off the coast. An area of low pressure may develop
near the southeast coast during the middle of the week. Ifr or MVFR
conditions may occur Tuesday through Thursday.

Cae watches warnings advisories
Ga... Lake wind advisory until 7 am est this morning for gaz040-
063>065-077.

Sc... Lake wind advisory until 7 am est this morning for scz015-016-
018-020>022-025>031-035>038-041.



Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
CHDS1 - Strom Thurmond Dam, SC 54 mi55 min SSW 2.9 G 14 67°F
LMFS1 - Lake Murray SC 61 mi75 min SSW 19 G 24 66°F 1003 hPa

Wind History for Charleston, SC
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Barnwell Regional Airport, SC2 mi40 minS 1010.00 mi66°F57°F73%1005.8 hPa

Wind History from BNL (wind in knots)
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Last 24hrCalmCalmCalmCalmCalmCalmCalmCalmCalmSW9S7SW9
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1 day agoCalmCalmCalmCalmCalmCalmNE4NE6NE8NE7CalmSE4CalmCalm3CalmCalmCalmCalmCalmCalmCalmCalmCalm
2 days agoCalmCalmCalmCalmCalmCalmCalmW35NW5NE7N5CalmW5W4CalmCalmCalmCalmCalmCalmCalmCalmCalm

Tide / Current Tables for Cuckolds Creek, Combahee River, South Carolina
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Cuckolds Creek
Click for Map
Sun -- 12:37 AM EST     3.66 feet High Tide
Sun -- 06:23 AM EST     0.48 feet Low Tide
Sun -- 06:56 AM EST     Sunrise
Sun -- 07:45 AM EST     Moonrise
Sun -- 01:06 PM EST     4.03 feet High Tide
Sun -- 05:19 PM EST     Sunset
Sun -- 06:31 PM EST     Moonset
Sun -- 07:02 PM EST     0.61 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
3.63.63.22.61.810.50.611.72.63.33.843.93.32.51.70.90.60.81.32.12.8

Tide / Current Tables for Tulifiny River, I-95 bridge, South Carolina
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Tulifiny River
Click for Map
Sun -- 05:40 AM EST     0.15 feet Low Tide
Sun -- 06:57 AM EST     Sunrise
Sun -- 07:46 AM EST     Moonrise
Sun -- 11:44 AM EST     5.77 feet High Tide
Sun -- 05:20 PM EST     Sunset
Sun -- 06:18 PM EST     0.24 feet Low Tide
Sun -- 06:32 PM EST     Moonset
Sun -- 11:54 PM EST     5.15 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
5.14.43.42.21.10.30.20.92.13.54.85.65.75.34.53.320.90.30.41.42.744.9

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 (1,6,7,8)
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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.