Monday, January22, 2018 L-36.com


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 7:25AMSunset 5:46PM Monday January 22, 2018 5:16 AM EST (10:16 UTC) Moonrise 10:46AMMoonset 11:04PM Illumination 31% Phase: Waxing Crescent; Moon at 6 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 220921
afdcae
area forecast discussion
national weather service columbia sc
421 am est Mon jan 22 2018

Synopsis
Moisture will increase in the southerly flow on the backside of
offshore high pressure and ahead of an approaching cold front
today. The front will move into the forecast area tonight and
push east of area Tuesday morning. Showers will occur ahead of
the front mainly late tonight. Warm conditions will continue
through Tuesday with slight cooling behind the front for
Wednesday and Thursday. It will be breezy just behind the front
Tuesday.

Near term through tonight
Moisture will be on the increase in the southerly flow between
offshore high pressure and the approaching cold front today.

There may be enough of a moisture increase combined with
isentropic lift for a few showers late today as indicated by
the hrrr. Have forecasted slight chance pops. Despite
considerable cloudiness believe the higher temperature guidance
is better just ahead of the cold front and based on the recent
bias.

The models move the cold front into the forecast area tonight.

Showers will likely be most concentrated in an h85 jet the
models depict in the forecast area during the 1000 pm to 700 am
time frame. Coverage may be greater in the north section
associated with a stronger low-level jet and greater upper
support associated with the trough lifting mainly north of the
region. There may be enough cooling aloft for isolated
thunderstorms mainly in the northwest section. The models depict
total totals around 50. The GFS and NAM show surface-based li
values lowering to 0 to -1 with the NAM most unstable. Despite
high shear associated with the h85 jet near 50 knots believe
the severe thunderstorm threat is low based on a lack of
significant surface-based instability. The diminished threat is
supported by the arw displaying weakening showers moving into
the area which is reasonable because of stronger upper lift
staying north of the region and the noctural timing. The system
will be fast moving and the guidance has been consistent showing
light rain amounts of less than one-quarter of an inch. We
followed the higher temperature guidance tonight because of
cloudiness and mixing ahead of the front.

Short term Tuesday through Tuesday night
Except for possible lingering showers near the front in the
morning expect dry and breezy conditions Tuesday. The gfs
forecast sounding and expected mixing support gusts around 25
knots. A lake wind advisory will likely be needed. Wind should
diminish Tuesday evening with the loss of mixing and a weakening
pressure gradient with high pressure ridging into the area from
the west. Followed the guidance consensus for the temperature
forecast.

Long term Wednesday through Sunday
The medium-range period will feature fair weather with near to
above normal temperatures into the weekend. A strong frontal
system may bring showers over the weekend.

A weak and somewhat flat shortwave trough will cross the
forecast area Wednesday as surface high pressure continues to
extend into the region from the west. It will be very dry. The
models indicate precipitable water values around 0.25 of an
inch. Therefore, no precipitation should be associated with the
trough. Surface high pressure will become centered along the
east coast by Thursday with rising 500 mb heights across the
ohio valley into the southeastern states through the end of the
week as an upper ridge builds downstream of an upper trough over
the intermountain west.

Medium-range models are in reasonable agreement showing the
eastward progression of the upper trough over the intermountain
west into the plains states Saturday with additional northern
stream energy diving into the trough and amplifying the 500 mb
flow. This amplification of the upper trough will be associated
with surface low development along an eastward moving cold
front. A moist southerly 850 mb jet off the gulf of mexico will
strengthen Saturday night into Sunday as the system approaches
allowing for strong moisture transport over the forecast area to
couple with increasing upper dynamics as forcing from the right
entrance region of the upper jet moves into the region. We
forecasted likely pops Saturday night and Sunday with the models
showing good run-to-run consistency.

Temperatures during this period will be near to slightly above
normal with highs Wednesday and Thursday in the upper 50s to
lower 60s becoming slightly warmer by Friday into the weekend.

Lows will generally be in the 30s through the week and reach
the 40s by the weekend with Saturday night being the warmest
night with lows in the upper 40s to lower 50s.

Aviation 09z Monday through Friday
High-level clouds will move into the area during the early
morning hours as surface high pressure moves offshore and a
light southerly low-level flow develops. Potential for fog
during the early morning hours. Fog already reported at ags
early this morning. Given small temp dewpoint spread and calm
wind... Have indicated MVFR fog at ogb and ifr fog at ags through
13z. Confidence remains too low to include fog at other sites
given increasing high clouds.

Cloud bases to lower after 12z and models indicated widespread
MVFR CIGS developing after 21z as moisture increases ahead of an
approaching cold front. Expect showers to develop across the
area after 00z Tuesday with possible restrictions.

Extended aviation outlook... Restrictions possible Tuesday
morning as a cold front crosses the region. Strong and gusty
westerly winds expected Tuesday behind the cold front.

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 mi57 min Calm G 0 45°F 1021 hPa
WATS1 - Lake Wateree, SC 24 mi47 min SE 1 G 1.9 35°F

Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Columbia - Jim Hamilton L.B. Owens Airport, SC6 mi24 minN 010.00 miFair41°F37°F89%1022.3 hPa
McEntire Air National Guard Weather Facility Base, SC9 mi21 minN 010.00 miFair38°F36°F96%1022.3 hPa
Columbia, Columbia Metropolitan Airport, SC13 mi81 minN 010.00 miPartly Cloudy39°F37°F93%1021.9 hPa
Winnsboro/Fairfield County Airport, SC23 mi22 minSSE 310.00 miFair46°F39°F76%1021.7 hPa
Shaw Air Force Base, SC23 mi21 minN 010.00 miFair39°F35°F88%1021.5 hPa

Wind History from CUB (wind in knots)
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Last 24hrCalmCalmCalmCalmCalmCalmCalmS5CalmSE3CalmS4CalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalm
1 day agoCalmCalmCalmCalmCalmCalmCalmNW6NW6W6NW5NW4CalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalm
2 days agoCalmCalmCalmW3CalmS5Calm5SW3W7W5NW4CalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalm

Tide / Current Tables for Pimlico, West Branch, Cooper River, South Carolina
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Pimlico
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Mon -- 01:56 AM EST     1.61 feet High Tide
Mon -- 07:20 AM EST     Sunrise
Mon -- 08:47 AM EST     0.16 feet Low Tide
Mon -- 10:41 AM EST     Moonrise
Mon -- 02:22 PM EST     1.71 feet High Tide
Mon -- 05:42 PM EST     Sunset
Mon -- 09:23 PM EST     -0.02 feet Low Tide
Mon -- 11:00 PM EST     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.21.51.61.51.41.10.70.40.20.20.30.71.21.51.71.71.51.30.90.50.2-000.4

Tide / Current Tables for Jamestown Bridge, Santee River, South Carolina
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Jamestown Bridge
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Mon -- 03:00 AM EST     1.05 feet High Tide
Mon -- 07:20 AM EST     Sunrise
Mon -- 10:40 AM EST     Moonrise
Mon -- 11:28 AM EST     0.07 feet Low Tide
Mon -- 03:23 PM EST     1.11 feet High Tide
Mon -- 05:40 PM EST     Sunset
Mon -- 10:58 PM EST     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.10.50.91.110.90.80.60.40.30.10.10.10.40.91.11.110.90.70.50.30.20.1

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 (5,6,7,8)
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Ground Weather Radar Station Columbia, 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.