Wednesday, March3, 2021
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Marine Weather and Tides
Columbia, SC

Version 3.4
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1/26/2021 -- The West Coast Satellite images havd been updated. They now use GEOS-17.
1/1/2021 -- The 7 day forecast are now working well. Thank you NOAA for your support.

Sunrise 6:48AMSunset 6:23PM Wednesday March 3, 2021 6:15 AM EST (11:15 UTC) Moonrise 11:28PMMoonset 9:40AM Illumination 77% Phase: Waning Gibbous; Moon at 19 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 031010 CCA AFDCAE

Area Forecast Discussion . CORRECTED National Weather Service Columbia SC 510 AM EST Wed Mar 3 2021

SYNOPSIS. Rain continues through the morning, tapering off from west to east into the afternoon. We dry out and warm up Thursday ahead of a dry cold front bringing cooler weather for Friday and Saturday. A strong ridge of high pressure will start a warming trend with little chance for rain over the weekend and into next week.

NEAR TERM /THROUGH TONIGHT/. Early This Morning: Surface low pressure continues to deepen off the Atlantic coast with the best low level moisture transport remaining in the Lowcountry as expected. Rain rates have been fairly unimpressive over the forecast area so far with some of the heavier bands between 1/4 to 1/3 in/hr. Limited elevated instability is just south of the forecast area leading to some isolated storms developing to the SW. This could help to generate some higher rain rates but with a more stable airmass is in place over our area, any storms will weaken considerably. For the most part QPF has been trending lower as dry airmass took much longer to overcome and current PWATs are between 1 to 1.2 inches south of I-20 and considerably lower elsewhere.

Today: Surface low will push off to the northeast with upper trough generating additional rain this morning. Pressure gradient will be fairly tight with breezy northerly winds, especially in the eastern forecast area. Deep layer NW flow will lead to drier air quickly filtering into the area with downslope winds as precip chances quickly decrease from west to east. With quicker clearing into afternoon, plenty of afternoon sunshine, and models likely underdoing the degree of downsloping today, have trended warmer with temperatures and lower with dew points. Highs will be in the upper 50s to low 60s.

Tonight: Fairly favorable radiational cooling conditions with clear skies and high pressure ridging into the area. A weak low level jet and maybe a bit of surface wind tonight will likely prevent ideal radiational cooling conditions but still went on the lower end of guidance with lows in the mid to upper 30s.

SHORT TERM /THURSDAY THROUGH FRIDAY NIGHT/. High pressure will continue to fill in for Thursday as the upper level trough to our northeast remains stationary and keeps us under strong northwest flow aloft. Downsloping northwest surface flow will continue to keep skies clear and help warm temps. There's good agreement across MOS and ensemble guidance that we should warm into the mid-upper 60s Thursday afternoon. A dry cold front will cross the area later Thursday and help drop dew points into the low 30s. Radiational cooling Thursday night will be somewhat offset by fairly strong north-northeast low level winds but lows will still drop into the upper 30s in the northern Midlands and low 40s elsewhere.

Northeast flow and cold advection at the surface will hold high temps slightly below average Friday. NBM and MOS guidance are consistently showing highs staying in the 50s in the Midlands and low 60s for the CSRA. Cloud cover will develop later in the day Friday as a weak upper level shortwave dives in from the northwest. The GEFS mean has been consistent over the last several runs, putting the shortwave over the northern Gulf Saturday morning, but other guidance has been more varied. However it does not appear to be a major weather maker given its generally unimpressive dynamics and unfavorable position in the larger scale flow. Only a few GEFS and NBM members have any precipitation developing over the forecast area as the best forcing stays too far southwest of the area. EC and GEFS ensemble means keep PWATs low, under 0.5 inches, which will further inhibit any widespread rain. So continued with keeping PoPs only slight Friday night into Saturday and only across the southern Midlands and CSRA.

LONG TERM /SATURDAY THROUGH TUESDAY/. By Saturday morning, the shortwave should exit off the coast and finally help progress the upper level trough eastward. As the trough axis slowly shifts east, cold advection will keep temps below average as a strong surface ridge fills in. Based on the ensemble suites, there is high confidence for below average temps Saturday and Saturday night. The anomalously strong surface ridge will progress southeastward by Sunday with moderate confidence in below average high and low temps; based on the NAEFS, surface pressures over the forecast area are expected to be in the top 5% climatologically.

There is high confidence in a warming trend for next week, as upper level ridging and rising heights will dominate the pattern. Nearly all NBM and GEFS members show steadily rising thicknesses and a more zonal southern jet starting Sunday, so the probability for above average temps and low PoPs through mid week is high.

AVIATION /10Z WEDNESDAY THROUGH SUNDAY/. Confidence high for restrictions developing through the early morning . Fast moving low pressure system over the northeast Gulf of Mexico will track northeast to the South Carolina coast early this morning then move east. This system will spread rain across the region with widespread MVFR expected to develop as lower ceilings over Georgia spread northeast by 08z. Brief visibility restrictions to less than 3 miles possible but heaviest rain should remain southeast of the area. The blended guidance suggests lowest ceilings toward 12z then improving from west to east. So, based on NBM and Lamp guidance, IFR at all terminals 12z-14z. Low ceilings may linger at OGB but expect VFR by 18z- 19z as system pulls away from the coast. Northeast winds 5 to 10 knots will shift to north/northwest by afternoon. Brief gusty winds possible after daybreak as low pressure deepens a bit off the coast.

EXTENDED AVIATION OUTLOOK . No significant impacts to aviation.

CAE WATCHES/WARNINGS/ADVISORIES. GA . None. SC . None.

SYNOPSIS . 99 NEAR TERM . 99 SHORT TERM . 99 LONG TERM . 99 AVIATION . 99


Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Columbia - Jim Hamilton L.B. Owens Airport, SC6 mi23 minNE 45.00 miLight Rain Fog/Mist42°F39°F89%1015.2 hPa
McEntire Air National Guard Weather Facility Base, SC9 mi20 minNNE 910.00 miLight Rain41°F41°F99%1014.6 hPa
Columbia, Columbia Metropolitan Airport, SC13 mi80 minNNE 8 G 1510.00 miLight Rain41°F37°F86%1014.6 hPa
Shaw Air Force Base, SC23 mi20 minNNE 910.00 miLight Drizzle42°F39°F91%1016.5 hPa
Winnsboro/Fairfield County Airport, SC23 mi21 minNE 810.00 miOvercast37°F36°F93%1015.2 hPa

Link to 5 minute data for KCUB

Wind History from CUB (wind in knots)
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Last 24hr5NE5E86E6443Calm3NE3E4CalmCalmCalmCalmCalmE43N4Calm4NE4NE4
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Tide / Current Tables for Pimlico, West Branch, Cooper River, South Carolina
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Pimlico
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Wed -- 02:01 AM EST     2.00 feet High Tide
Wed -- 06:45 AM EST     Sunrise
Wed -- 08:50 AM EST     -0.34 feet Low Tide
Wed -- 09:36 AM EST     Moonset
Wed -- 02:18 PM EST     1.80 feet High Tide
Wed -- 06:18 PM EST     Sunset
Wed -- 09:04 PM EST     -0.34 feet Low Tide
Wed -- 11:22 PM EST     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.41.821.91.61.10.50.1-0.2-0.3-0.10.51.11.61.81.81.51.10.60.1-0.2-0.3-0.20.3

Tide / Current Tables for Jamestown Bridge, Santee River, South Carolina
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Jamestown Bridge
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Wed -- 02:59 AM EST     1.29 feet High Tide
Wed -- 06:44 AM EST     Sunrise
Wed -- 09:35 AM EST     Moonset
Wed -- 11:25 AM EST     -0.12 feet Low Tide
Wed -- 03:16 PM EST     1.17 feet High Tide
Wed -- 06:17 PM EST     Sunset
Wed -- 11:21 PM EST     Moonrise
Wed -- 11:39 PM EST     -0.12 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.10.71.11.31.21.10.90.70.40.2-0-0.1-00.40.91.21.110.90.60.40.20-0.1

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NOTE: This section has been updated as of 1/26/2021. If the image you are expecting is not showing, please let me know. You may use the EDIT function to update your location.
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