Friday, August14, 2020
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Marine Weather and Tides
Columbia, SC

Version 3.4
NOTICE
12/16/2019 NOAA is having trouble with requests that include wind gusts. I am posting graphs without wind gusts until it gets fixed.
10/9/2019 Updated the Marine Zones.
9/4/2019 Fixed the weather maps due to NOAA moving them.
7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports.

Sunrise 6:44AMSunset 8:13PM Friday August 14, 2020 3:38 AM EDT (07:38 UTC) Moonrise 1:07AMMoonset 3:50PM 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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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 140728 AFDCAE

Area Forecast Discussion National Weather Service Columbia SC 328 AM EDT Fri Aug 14 2020

SYNOPSIS. With the Bermuda high offshore and a persistent upper level trough in the Lower Mississippi Valley, a moist and unstable air mass will remain across the area into this weekend. Scattered to numerous showers and thunderstorms are expected each day primarily during the afternoon and evening periods. Temperatures will be near normal.

NEAR TERM /THROUGH TONIGHT/. Early this morning: A few showers and thunderstorms remain just off to the west of the CSRA. Some of this activity will slowly push into the western cwa through the early morning. With the slower movement of the storms, periods of heavy rainfall will still be possible across the CSRA. Morning lows will again be in the low to mid 70s.

Today: Main upper trough axis will still be off to the west of the area through the day. Models continue to show high pwat values across the region again, with readings above 2 inches. With expected weak low-level convergence, shower and thunderstorm coverage will increase once again by this afternoon. Heavy rainfall and gusty winds will be the main threats once again. WPC has the entire cwa in a marginal risk of excessive rainfall through the evening hours. Afternoon highs top out around 90 degrees.

Tonight: Showers and thunderstorms will linger into the overnight hours once again. Plenty of convective cloud debris will be across the area, which should help to limit any widespread fog. Overnight lows in the lower to mid 70s.

SHORT TERM /SATURDAY THROUGH SUNDAY NIGHT/. Moisture will remain anomalously high once again Saturday as the upper trough approaches from the west, with its axis over the southern Appalachians. This will lead to increased upper level forcing, especially across the northern and western forecast area as a surface low moves across SC. As a result, widespread thunderstorms are likely to develop across the area, producing locally heavy rain. Moderate instability and marginal deep layer shear will lead to an isolated damaging wind threat, mainly in the northern half of the forecast area, where 500mb SW winds will be around 20 knots. While some convection may linger overnight, the damaging wind threat will be limited.

By Sunday, the axis of the upper trough will be closer to the SC coast and, as a result, a NW flow behind the trough will bring some drier air into the region. Diurnally driven showers and storms will still be possible, especially in the eastern area where surface convergence and additional moisture will be present. Coverage of this convection will likely remain more isolated. Temperatures this weekend will be near average with highs in the upper 80s and low 90s and overnight lows in the low to mid 70s.

LONG TERM /MONDAY THROUGH THURSDAY/. Isolated diurnal convection likely once again Monday afternoon and evening with limited moisture. The strengthening ridge in the western US will lead to another deepening trough across the Deep South, leading to increasing moisture once again by Tuesday with the flow strengthening out of the SW. A surface trough will once again provide an area of low level convergence for storms to focus with upper level energy passing near the forecast area as a result of this deepening upper trough. As a result, expect unsettled conditions through the long term period. Lower than average 500mb heights will support temperatures slightly below average, in the mid to upper 80s.

AVIATION /07Z FRIDAY THROUGH TUESDAY/. Restrictions possible in scattered to numerous showers and thunderstorms, especially during the afternoon and evening hours. During the overnight period, stratus/fog will become possible.

Satellite shows plenty of convective debris clouds across the western Midlands and much of the CSRA. Less high clouds across the eastern Midlands, which is leading to more low ifr clouds and fog. This trend should continue through the morning hours. Continued with restrictions at all terminals during the early morning and sunrise hours, however confidence is low. Through the day, the main upper level trough will still be off to the west of the region, while at the surface a weak trough should also be across the region, along with plenty of old outflow boundaries. Scattered to numerous showers and thunderstorms will once again develop, leading to vcts through the afternoon hours. Shower remain possible through the overnight into Saturday, with restrictions becoming possible.

EXTENDED AVIATION OUTLOOK . Restrictions possible each day in mainly diurnally driven convection as well as potential for late night/early morning fog/stratus.

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 mi79 min WNW 1 G 5.1 76°F
WATS1 - Lake Wateree, SC 24 mi69 min SSE 1.9 G 2.9 72°F

Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Columbia - Jim Hamilton L.B. Owens Airport, SC6 mi46 minN 08.00 miMostly Cloudy74°F73°F97%1015.1 hPa
McEntire Air National Guard Weather Facility Base, SC9 mi43 minN 00.75 miFog/Mist72°F72°F100%1015.6 hPa
Columbia, Columbia Metropolitan Airport, SC13 mi43 minSSE 310.00 miPartly Cloudy74°F71°F91%1014.8 hPa
Shaw Air Force Base, SC23 mi43 minN 010.00 miMostly Cloudy74°F72°F96%1015 hPa
Winnsboro/Fairfield County Airport, SC23 mi44 minNW 42.50 miFog/Mist70°F69°F100%1015.6 hPa

Link to 5 minute data for KCUB

Wind History from CUB (wind in knots)
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Last 24hrCalmCalmCalmCalmCalmS33S3CalmSW73SW5Calm3CalmCalmS4S6S4CalmCalmCalmCalmCalm
1 day agoCalmCalmCalmCalmCalmCalm3CalmSW4CalmSE4W7SW5CalmSW3CalmCalmCalmSE4S3CalmCalmSW4Calm
2 days agoCalmSE3SE3S3S3SW3SW543N3--S3Calm54CalmCalmCalmCalmCalmCalmS4CalmS3

Tide / Current Tables for Pimlico, West Branch, Cooper River, South Carolina
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Pimlico
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Fri -- 02:05 AM EDT     Moonrise
Fri -- 02:30 AM EDT     1.33 feet Low Tide
Fri -- 06:42 AM EDT     Sunrise
Fri -- 07:43 AM EDT     1.50 feet High Tide
Fri -- 02:36 PM EDT     0.71 feet Low Tide
Fri -- 04:43 PM EDT     Moonset
Fri -- 08:05 PM EDT     Sunset
Fri -- 08:22 PM EDT     1.90 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.51.41.31.31.41.41.51.51.51.41.31.110.80.70.70.91.21.51.81.91.91.81.7

Tide / Current Tables for Jamestown Bridge, Santee River, South Carolina
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Jamestown Bridge
Click for Map
Fri -- 02:03 AM EDT     Moonrise
Fri -- 05:05 AM EDT     0.45 feet Low Tide
Fri -- 06:41 AM EDT     Sunrise
Fri -- 08:41 AM EDT     0.97 feet High Tide
Fri -- 04:42 PM EDT     Moonset
Fri -- 05:11 PM EDT     0.24 feet Low Tide
Fri -- 08:04 PM EDT     Sunset
Fri -- 09:20 PM EDT     1.23 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.90.80.70.60.50.40.50.80.910.90.90.70.60.50.40.30.20.30.711.21.21.2

Weather Map
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wmap_A
GEOS 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.
Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Columbia, SC (3,6,7,8)
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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 numerous 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.