Friday, February22, 2019 L-36.com


Marine Weather and Tides
Barnwell, SC

Version 3.4
What's New / NOTES
10/6/2018 Colors of tide XTide graphs changed to emphasize that they were upgraded. See next note. Comments welcome.
10/4/2018 I have fixed XTide and updated the harmonic files. There were some name changes so you might have to click EDIT to find the new station name.

Sunrise 7:02AMSunset 6:18PM Friday February 22, 2019 7:52 AM EST (12:52 UTC) Moonrise 9:56PMMoonset 9:15AM Illumination 90% Phase: Waning Gibbous; Moon at 18 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- 611 Am Est Fri Feb 22 2019
.dense fog advisory in effect until 10 am est this morning...
Today..S winds 5 kt, becoming E early this afternoon, then becoming ne late. Patchy fog this morning. A chance of showers. Vsby 1/4 nm or less this morning.
Tonight..NE winds 10 to 15 kt. A slight chance of showers.
Sat..NE winds 5 to 10 kt. A slight chance of showers in the morning.
Sat night..SE winds 5 to 10 kt, becoming S after midnight. A chance of showers.
Sun..SW winds 10 to 15 kt with gusts to 20 kt. A chance of showers in the morning, then showers likely in the afternoon.
Sun night..NW winds 10 to 15 kt.
Mon..N winds 5 to 10 kt.
Mon night..NE winds 5 to 10 kt.
Tue..E winds 5 to 10 kt.
Tue night..E winds 5 to 10 kt. A slight chance of showers. Unless otherwise noted, waves 1 foot or less. Charleston harbor water temperature 57 degrees.
AMZ300 611 Am Est Fri Feb 22 2019
Synopsis for the coastal waters of south coastal south carolina and north coastal georgia.. A backdoor cold front will slide south across the area through this evening, then shifting back north as a warm front late Saturday and and Saturday night. A cold front will then move through Sunday followed by high pressure into mid week. Low pressure will then likely affect the area late 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 221106
afdcae
area forecast discussion
national weather service columbia sc
606 am est Fri feb 22 2019

Synopsis
A frontal system will remain in the region through Saturday
night. A cold front will cross the area Sunday with a dry air
mass overspreading the region during the afternoon. Dry high
pressure will be in control Monday and Tuesday.

Near term through tonight
High low-level moisture combined with nocturnal cooling has
resulted in areas of dense fog mainly in the south part of the
forecast area. Thicker cloudiness and wind behind the front has
limited fog in the north section. The hrrr suggested
improvement mainly from north to south by 1100 am. We have
posted a dense fog advisory for south sections.

High pressure will build into the middle atlantic states today
and the front in the north part of the forecast area early this
morning will sink back southward. The deep plume of moisture
indicated on the water vapor imagery is forecast by the models
to stay just west and north of the forecast area through
tonight. Support for showers will be greatest in the northwest
part of the forecast area closer to the deeper moisture and
greater upper lift associated with a series of mid-level
shortwave troughs on the northern periphery of the upper
ridging off the southeast coast. Expect scattered showers and
areas of drizzle with the more significant showers mainly in the
northwest section. The nam, gfs, and ECMWF indicate mainly
light rainfall amounts in the forecast area of less than one-
quarter of an inch. There will be a tight temperature gradient
in the forecast area associated with the front sinking
southward. The north part will remain in the cool air mass.

There is uncertainty with the timing in the central and south
sections and there may be breaks in the cloudiness in the
southeast part where it may become quite warm today. We
followed a guidance consensus for the temperature forecast but
there is low confidence. The entire area should be in the cool
wedge pattern behind the front tonight. The NAM and GFS mos
support northeast wind mainly 5 to 10 mph behind the front. The
nam and GFS bufkit momentum transfer tool suggests there may be
gusts of 15 to 20 mph as the wedge ridge builds into the area
behind the front.

Short term Saturday through Sunday
The wedge is expected to break Saturday night as the upper
trough lifts into the ohio valley and great lakes region. A
wedge front to our south will lift north as a warm front
Saturday night as a cold front approaches from the west. The
chance for light rain and drizzle will linger Saturday into
Saturday night.

The cold front is forecast to cross the area during the 12z-
18z time frame on Sunday with high pressure building in behind
the front and skies clearing from the west. Breezy conditions
are possible on Sunday.

Temperatures will be challenging with the wedge in place,
especially if there is not much precipitation into the wedge to
strengthen it. Leaned toward the cooler side of guidance for
max temperatures on Saturday. Warm advection Saturday night
could allow temperatures to warm overnight. Above normal
temperatures are expected Sunday as downslope flow develops
behind the cold front.

Long term Sunday night through Thursday
Tranquil weather is expected early next week. Surface high
pressure will build into the region Sunday night in the wake of
the departing cold front. The center of high pressure
will build east across the ohio valley Monday and into the mid-
atlantic Monday night before shifting offshore on Tuesday. This
airmass will be quite dry with precipitable water values at or
below 0.25 inches into early Tuesday before increasing to around
0.5 inches by 00z Wednesday. 500mb flow aloft will be zonal
from the west and no precipitation is expected Sunday night
through Tuesday.

A return southerly flow Tuesday night into Wednesday with
moisture transport into the area will surge precipitable water
values well over 1 inch by Wednesday afternoon. This will be in
response to the phasing of southern stream energy with a digging
northern stream trough into the great lakes and the ohio valley
which will bring an increase in rain chances Tuesday night
Wednesday night. There remains significant model differences in
the phasing of the energy so there is some limited confidence
in rain chances. Have followed an ensemble blend for Wednesday
through Thursday given model inconsistencies. The forecast holds
a chance of showers Wednesday through Thursday with
temperatures at or slightly above normal.

Aviation 11z Friday through Tuesday
Expect ifr conditions through the 24-hour TAF period.

High pressure will build into the middle atlantic states today
and a cold front will push southward and through the forecast
area. Low-level moisture will remain high along and behind the
front and we expect continued ifr conditions. Support for
showers will be greatest just northwest of the terminals closer
to deeper moisture and greater upper lift associated with a
series of mid-level shortwave troughs on the northern periphery
of the upper ridging off the southeast coast. Expect scattered
showers locally but drizzle may occur during much of the time
associated with the warm advection pattern just above the cool
wedge sinking into the area behind the cold front. Winds will
become northeast behind the cold front. The NAM and GFS mos
support speeds 5 to 10 knots. The NAM and GFS bufkit momentum
transfer tool suggests there may be gusts of 15 to 20 knots as
the wedge builds into the area behind the front.

Extended aviation outlook... A wedge regime is expected to
remain in place through Saturday, providing high confidence for
flight restrictions. A cold front will move through the area
early Sunday and it will become breezy and dry. Ridging is
forecast in the region Monday and Tuesday with dry conditions
and diminished winds.

Cae watches warnings advisories
Ga... Dense fog advisory until 11 am est this morning for gaz040-
063>065-077.

Sc... Dense fog advisory until 11 am est this morning for scz018-025-
026-030-035>038-041.

Synopsis... 99
near term... 99
short term... 99
long term... 99
aviation... 99


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
CHDS1 - Strom Thurmond Dam, SC 54 mi73 min N 4.1 G 5.1 59°F
LMFS1 - Lake Murray SC 61 mi63 min NE 4.1 G 6 57°F 1021 hPa

Wind History for Charleston, SC
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Barnwell Regional Airport, SC2 mi58 minN 00.25 miFog64°F64°F100%1020.7 hPa

Wind History from BNL (wind in knots)
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Last 24hrCalmCalmCalmCalmSW6SW6
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----SW7W5CalmCalmCalmCalmCalmCalmCalmCalmCalmSE4CalmCalmCalmCalm
1 day agoNE8NE6NE6NE8
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NE7NE6NE8NE7N6N6NE4NE5N6NE6NE6E3E3CalmN4CalmCalmCalmCalmCalm
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Tide / Current Tables for Tulifiny River, I-95 bridge, South Carolina
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Tulifiny River
Click for Map
Fri -- 01:12 AM EST     5.80 feet High Tide
Fri -- 06:59 AM EST     Sunrise
Fri -- 07:38 AM EST     -1.17 feet Low Tide
Fri -- 09:13 AM EST     Moonset
Fri -- 01:32 PM EST     5.87 feet High Tide
Fri -- 06:15 PM EST     Sunset
Fri -- 07:59 PM EST     -0.94 feet Low Tide
Fri -- 09:53 PM EST     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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5.25.85.64.73.41.80.2-1-1.1-0.11.63.44.95.75.85.13.92.40.8-0.5-0.9-0.412.6

Tide / Current Tables for Cuckolds Creek, Combahee River, South Carolina
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Cuckolds Creek
Click for Map
Fri -- 02:32 AM EST     4.05 feet High Tide
Fri -- 06:58 AM EST     Sunrise
Fri -- 08:19 AM EST     -2.77 feet Low Tide
Fri -- 09:12 AM EST     Moonset
Fri -- 02:53 PM EST     4.10 feet High Tide
Fri -- 06:14 PM EST     Sunset
Fri -- 08:40 PM EST     -2.24 feet Low Tide
Fri -- 09:52 PM EST     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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2.23.3443.21.80-1.7-2.7-2.6-1.5-01.633.84.13.62.40.9-0.8-2-2.2-1.5-0.3

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 (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.