Tuesday, December10, 2019
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Marine Weather and Tides
Irmo, SC

Version 3.4
NOTICE
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.
6/2/2019. Many thanks to a user for reporting an error on one of the Edit pages. The switch to PHP 7.2 caused many pages that previously worked to quit working. I fixed many but I still depend on users to report ones I missed. Please report errors HERE or send an email to me at L-36.com. Allen

Sunrise 7:17AMSunset 5:16PM Tuesday December 10, 2019 1:12 AM EST (06:12 UTC) Moonrise 4:22PMMoonset 5:34AM Illumination 97% Phase: Waxing Gibbous; Moon at 13 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 Irmo, SC
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location: 34.08, -81.18     debug


Area Discussion for - Columbia, SC
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FXUS62 KCAE 100531 AFDCAE

Area Forecast Discussion National Weather Service Columbia SC 1231 AM EST Tue Dec 10 2019

SYNOPSIS. The bulk of the moisture associated with an approaching cold front will stay northwest of the area through Tuesday. The front and associated deeper moisture will be in the region Tuesday night. It will be warm and breezy ahead of the front Tuesday. High moisture just behind the front will linger into Wednesday. Dry high pressure will ridge into the area from the north Thursday. Moisture will return Friday ahead of low pressure in the Gulf of Mexico.

NEAR TERM /UNTIL 6 AM THIS MORNING/. The warm front has stalled along the western fringe of the area and may wiggle a little overnight before shifting further northward. Most of the area will remain dry through the overnight period, but did keep a slight chance west near the warm front. A cold front currently extending from the Great Lakes region through the Mississippi River Valley will progress eastward overnight moving into the western Appalachians by daybreak. Overnight lows will be quite mild with cloud cover and mixing ahead of the front.

SHORT TERM /6 AM THIS MORNING THROUGH THURSDAY/. Tuesday: Strong warm advection ahead of an approaching cold front through the day will lead to well above normal afternoon temperatures for the area. Readings expected to climb well into the 70s through the day for most of the cwa. Bulk of the rainfall will be off to the west of the forecast area through the day, and have trended towards slight chance/chance pops across the west, with potential for dry weather across the east through the day. Although temperatures will be quite warm, instability is rather weak, and thus only expecting showers with the activity.

Tuesday night: Plenty of showers will be spreading across the cwa from west to east through the night just ahead of the cold front. Mixing along the front favored the higher low temperature guidance. Overnight lows remaining mild since the front not expected to push completely through until closer to morning.

Wednesday and Wednesday night: May see some lingering showers early in the morning as the front exits, then dry for majority of the area. Exception may be across the extreme east/southeast where moisture may remain deeper for a little longer in the day. It will be much cooler behind the front, with high back down into the upper 40s north, to the middle 50s south.

Thursday: Much of the day should be dry as moisture deeper moisture remains far enough away from the cwa. Surface high centered off to the north of the area will be wedging southward, bringing colder air with it into the cwa.

LONG TERM /THURSDAY NIGHT THROUGH MONDAY/. Thursday night will see moisture increase rather rapidly as isentropic lift increases from the south, bringing Atlantic moisture over the surface wedge. There remains uncertainty this far out as to exactly what type of precip may fall across the northern cwa late Thursday/early Friday. Much will depend on surface temperatures. Guidance shows readings across portions of the Pee Dee and Catawba regions approaching freezing Friday morning, which could lead to a brief period of freezing rain to start off the day. Slight variations in temperatures will affect surface conditions. Warmer temps lead to all rain, while a slight dip in temps would lead to additional freezing rain. Soil and road temps will also affect things. All this to say, confidence is very low this far out, especially since models still do not seem to have good run- to- run and model-to- model consistency. For now, it would seem like there may be a brief brush with freezing temperature across the extreme northwest Friday morning. Top down tool does show brief freezing rain in norther Lancaster Friday morning. The remainder of the forecast area is expected to remain above the freezing mark, with all rain forecast in those locations.

Friday will then see temperatures climb above freezing everywhere shortly after sunrise, with just rain expected then into Saturday morning. Drier airmass then returns for Saturday night into Sunday.

AVIATION /06Z TUESDAY THROUGH SATURDAY/. A moist southerly flow will continue to promote lower CIGs tonight, along with LLWS. MVFR to IFR conditions are expected through morning. Ceilings may lift to VFR as showers move in during the afternoon, but confidence in timing and coverage is low so have included VCSH at all terminals and will adjust as confidence increases. Have greater confidence in rain moving in from the west after 00Z Tuesday night.

Winds will be light through morning, then increase from the southwest and become gusty ahead of the approaching cold front.

EXTENDED AVIATION OUTLOOK . Restrictions expected Tuesday night through midday Wednesday as a cold front with showers crosses the region. Increasing confidence in restrictions late Friday through Saturday as another low pressure system crosses the region.

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 5 mi52 min SSW 4.1 G 5.1 55°F
WATS1 - Lake Wateree, SC 31 mi42 min S 1 G 1 52°F

Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Columbia, Columbia Metropolitan Airport, SC9 mi76 minN 010.00 miPartly Cloudy56°F52°F87%1016.7 hPa
Columbia - Jim Hamilton L.B. Owens Airport, SC12 mi19 minN 010.00 miA Few Clouds54°F50°F87%1016.6 hPa
Winnsboro/Fairfield County Airport, SC17 mi17 minS 710.00 miPartly Cloudy50°F46°F88%1016.3 hPa
McEntire Air National Guard Weather Facility Base, SC23 mi76 minN 010.00 miPartly Cloudy58°F58°F100%1017.2 hPa

Link to 5 minute data for KCAE

Wind History from CAE (wind in knots)
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Last 24hrE6N3NE4E5E5N3NW3CalmCalmSE4S7S7S14
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SW4SW3CalmCalmCalmCalmN3CalmCalm
1 day agoNE5E6NE4NE7NE6NE6NE8NE9E7N5NE5NE7NE7NE7NE4NE4N3NE3N3N4NE3NE3E4E3
2 days agoNW3CalmCalmCalmCalmSW3CalmN3NE5NE11E7NE86E9NE4NE5NE5E6NE5NE5E8E6E8NE8

Tide / Current Tables for Bacon Bridge, Ashley River, South Carolina
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Bacon Bridge
Click for Map
Tue -- 03:42 AM EST     0.04 feet Low Tide
Tue -- 05:28 AM EST     Moonset
Tue -- 07:12 AM EST     Sunrise
Tue -- 08:55 AM EST     2.15 feet High Tide
Tue -- 04:19 PM EST     0.15 feet Low Tide
Tue -- 04:20 PM EST     Moonrise
Tue -- 05:14 PM EST     Sunset
Tue -- 09:14 PM EST     1.82 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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10.70.30.10.10.411.622.22.11.81.410.60.30.20.30.71.21.61.81.81.6

Tide / Current Tables for Pimlico, West Branch, Cooper River, South Carolina
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Pimlico
Click for Map
Tue -- 03:58 AM EST     0.11 feet Low Tide
Tue -- 05:27 AM EST     Moonset
Tue -- 07:11 AM EST     Sunrise
Tue -- 09:38 AM EST     1.98 feet High Tide
Tue -- 04:19 PM EST     Moonrise
Tue -- 04:35 PM EST     0.39 feet Low Tide
Tue -- 05:13 PM EST     Sunset
Tue -- 09:57 PM EST     1.68 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.10.80.50.20.10.30.71.31.71.921.81.61.30.90.60.40.40.611.41.61.71.6

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 (1,6,7,8)
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Ground Weather Radar Station Columbia, SC
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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 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.