Sunday, June25, 2017

Marine Weather and Tides
Columbia, 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 6:13AMSunset 8:40PM Sunday June 25, 2017 11:46 PM EDT (03:46 UTC) Moonrise 6:56AMMoonset 9:12PM Illumination 4% Phase: Waxing Crescent; Moon at 2 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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7 Day Forecast for Marine Location Near Columbia, SC
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location: 34.03, -80.9     debug

Area Discussion for - Columbia, SC
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Fxus62 kcae 260228
area forecast discussion
national weather service columbia sc
1028 pm edt Sun jun 25 2017

A slow moving cold front will stall along the coast tonight
while high pressure builds in from the northwest. Cooler and
drier air with lower humidity is expected through mid week.

Moisture will return by the end of the week with increasing
temperatures and chances of rain through the weekend.

Near term until 7 am Monday morning
Update: showers developing along an outflow boundary over the
central midlands from bishopville through rembert to just south
of columbia to gaston. Mesoanalysis indicated moisture
convergence with capes 2000-3000 j kg and LI minus 3c to minus
5c. Hrrr model has this area of convection drifting slowly
southeast through 06z. Have adjusted pops across the midlands

Previous discussion: an upper level trough will continue over
the eastern conus. An upper level disturbance moving through the
base of the trough combined with slow moving frontal boundary
will continue showers and thunderstorms from the eastern
midlands to the coast early this evening. The front will move to
the coast by daybreak Monday.

Convection should gradually move east of the midlands during the
evening as drier air continues to filter into the region from
the north. Dewpoints will lower to lower 60s by Monday morning.

Patchy fog will be possible from the southern midlands to the
csra tonight. Have forecasted overnight lows from the mid 60s
north and west to the lower 70s southeast.

Short term 7 am Monday morning through Monday night
The surface frontal boundary will be stalled along the coastal
plain on Monday with weak north to northwesterly flow across the
forecast area. The deeper moisture will still be lingering over
the southeastern midlands and lower csra with precipitable
water values around 1.5 inches through the morning but lowering
through the day as high pressure continues to build into the
area. Forecast instability is expected to be minimal with lifted
index values around -2c through early afternoon and diminishing
after that with daytime mixing.

Given the very weak instability and diminishing deep moisture during
peak heating and frontal boundary southeast of the forecast area,
will carry a dry forecast although cannot rule out an isolated
shower in the far eastern midlands. Temperatures will be slightly
below normal with highs in the mid to upper 80s and lows Monday
night in the lower to mid 60s.

Long term Tuesday through Sunday
A digging upper trough will move across the ohio valley and mid-
atlantic on Tuesday bringing colder 500mb temps around -12c to the
region. The deeper moisture and surface boundary that pushed
through the forecast area will remain stalled along the coast with
precipitable water values over the forecast area generally in the 1
to 1.3 inch range with the higher values in the southeastern
midlands. The limited moisture is a limiting factor for convection
and forecast instability is expected to remain weak in our area so
will continue to carry slight chance pops mainly east of i-77 and
south of i-20 corridors.

Another shot of drier air will filter into the area behind the
trough Tuesday night and settle over the area Wed Thu with surface
high pressure becoming centered over the carolinas. This seasonably
cooler and drier air mass will provide stable conditions and prevent
diurnal convection while providing a more comfortable less humid
environment for outdoor activities.

Moisture will be on the increase Friday through the weekend as the
surface ridge shifts offshore and return southerly flow develops.

The upper level pattern fri-sun becomes more zonal at 500mb with
some weak troughiness moving into the area Sat Sun which will
provide an increased chance of diurnal convection supported by
precipitable water values back close to 2 inches.

Temperatures through this period will be slightly below normal
Tuesday then near normal the remainder of the week into weekend.

Aviation 03z Monday through Friday
Area of dissipating convection near ogb in then ear term.

Otherwise, drier air will push into the fa from the north late
tonight behind a secondary front trough. Veil of mid and high
level cloudiness appears will continue streaming across the fa,
though it may push south of the fa late tonight early Monday
morning. These factors appear to preclude fog stratus concerns
over most of the fa. However, at fog prone ogb where
precipitation occurred this evening and where dewpoints are
higher, some possibilities of fog stratus exist, with some
potential at fog prone ags if cloudiness clears late tonight.

Will include tempo groups at both locations. Otherwise,VFR.

Drier air will continue pushing into the fa Monday under ne
surface winds.

Extended aviation outlook... No significant impacts to aviation

Cae watches warnings advisories
Ga... None.

Sc... None.

Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
LMFS1 - Lake Murray SC 20 mi27 min N 1.9 G 7 76°F 1018.3 hPa
WATS1 - Lake Wateree, SC 24 mi77 min N 2.9 G 4.1 78°F 1019.3 hPa

Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Columbia - Jim Hamilton L.B. Owens Airport, SC6 mi54 minNW 310.00 miFair77°F64°F66%1018.9 hPa
McEntire Air National Guard Weather Facility Base, SC9 mi49 minNW 410.00 miMostly Cloudy71°F69°F95%1019 hPa
Columbia, Columbia Metropolitan Airport, SC13 mi51 minN 010.00 miA Few Clouds79°F64°F62%1018.6 hPa
Winnsboro/Fairfield County Airport, SC23 mi52 minN 310.00 miPartly Cloudy73°F64°F74%1019.6 hPa
Shaw Air Force Base, SC23 mi49 minE 310.00 miMostly Cloudy77°F74°F93%1017.9 hPa

Wind History from CUB (wind in knots)
Last 24hrW3CalmCalmCalmCalmCalmSW3W3W3W3CalmCalmCalmCalmN436N5CalmCalmCalmCalmSE3NW3
1 day agoS9S11
2 days agoCalmCalmCalmCalmS4S4SW4SW3SW5SW5SW5S6W7SW9SW10

Tide / Current Tables for Pimlico, West Branch, Cooper River, South Carolina
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Sun -- 12:32 AM EDT     2.34 feet High Tide
Sun -- 06:12 AM EDT     Sunrise
Sun -- 07:34 AM EDT     -0.67 feet Low Tide
Sun -- 07:54 AM EDT     Moonrise
Sun -- 01:02 PM EDT     1.86 feet High Tide
Sun -- 07:38 PM EDT     -0.90 feet Low Tide
Sun -- 08:32 PM EDT     Sunset
Sun -- 10:06 PM EDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

Tide / Current Tables for Jamestown Bridge, Santee River, South Carolina
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Jamestown Bridge
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Sun -- 01:40 AM EDT     1.53 feet High Tide
Sun -- 06:10 AM EDT     Sunrise
Sun -- 07:53 AM EDT     Moonrise
Sun -- 10:12 AM EDT     -0.20 feet Low Tide
Sun -- 02:09 PM EDT     1.21 feet High Tide
Sun -- 08:31 PM EDT     Sunset
Sun -- 10:05 PM EDT     Moonset
Sun -- 10:18 PM EDT     -0.27 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

Weather Map and Satellite Images
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Weather Map
IR Satellite Image from GEOS

GOES Local Image of Southeast    EDIT

Wind Forecast for Columbia, SC (23,6,7,8)
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Ground Weather Radar Station Columbia, SC
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weather_mapweather_map weather_map

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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 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 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.