Friday, July28, 2017 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 6:32AMSunset 8:29PM Friday July 28, 2017 9:04 AM EDT (13:04 UTC) Moonrise 10:56AMMoonset 11:04PM Illumination 24% Phase: Waxing Crescent; Moon at 5 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 281044
afdcae
area forecast discussion
national weather service columbia sc
644 am edt Fri jul 28 2017

Synopsis
A pre-frontal trough will shift over the area Friday, followed
by a strong cold front from the northwest Friday night and
Saturday. Cooler and drier conditions are then expected into
early next week as high pressure builds over the region.

Near term through tonight
Upper level ridge over the southern plains retrograding as
trough moves across the great lakes region. Another short wave
trough evident over tennessee and alabama this morning moving
toward the carolinas and georgia. Area in a region of upper
level diffluence today. Pre-frontal trough across the region
this afternoon. Air mass expected to be moderately unstable and
quite warm due to increasing warm advection in the afternoon
aided by strong 850mb jet near 30 kts. Afternoon temperatures
should be a degree or two warmer than yesterday... Low to mid
90s. Deep layer shear is marginally strong. Models suggest
moist air mass by late in the day with precipitable water
increasing to above 2 inches. The robust short wave over
tennessee this morning may be a trigger for thunderstorms late
this afternoon and during the evening. High resolution models
and MOS suggest convection scattered but possibly strong. Think
at least a marginal risk of severe weather with damaging winds
the main threat aided by the strong west low level jet-max near
40 kts. Heavy rain may be a threat as well but storm motion may
limit overall qpf. Went above guidance pops due to at least
moderate lift expected in a moist and unstable air mass ahead of
a synoptic cold front approaching from north carolina.

Convection should weaken by 06z as models suggest limited
instability but with moist air mass heavy rain still possible.

So decreasing pops after midnight. Temperatures cooling in the
low to mid 70s. Front should be near the north midlands by
morning.

Short term Saturday through Sunday
Front in the area Saturday morning... Moving into the south
midlands csra. Abundant moisture and sufficient instability
will support a good coverage of showers and thunderstorms over
most of the area during the morning on Saturday... With coverage
diminishing from the northwest during the afternoon. A few
severe thunderstorms are possible into Saturday, especially
across the eastern midlands and i-95 corridor to the coast as
the front makes its way across the area. Temperatures will be
seasonable for this time of year with highs in the lower 90s.

Cooler temperatures Saturday night as skies clear.

Long term Sunday night through Thursday
An upper level low over the mid atlantic will carve out a deep
upper trough over the region through Wednesday. Much cooler and
drier conditions will prevail Sunday through Tuesday as surface
high pressure builds into the region from the north and a cold
front remains well to our south. Air mass moderating by mid
week and dry conditions should continue although moisture may
increase late in the period as frontal boundary across the gulf
coast region lifts north. Temperatures should be much more
pleasant with afternoon highs in the middle to upper 80s and
overnight lows in the mid upper 60s. Some area across the
northern and western midlands could see dewpoint values in the
upper 50s, much drier than the area has seen in awhile.

Aviation 12z Friday through Tuesday
Vfr conditions for most of the TAF period... With thunderstorms
expected from 21z into the early morning hours.

Patchy fog and stratus currently impacting ogb will burn off by
14z with all terminalsVFR through the mid afternoon hours. Cold
front will move into the area late today bringing thunderstorms
for late this afternoon into the early morning hours. Have
remained with vcts from 21z onward as confidence in timing of
thunderstorms remains low. Thunderstorms will contain locally
heavy rainfall with lower potential for strong wind gusts.

Convection will diminish during the early morning
hours... However the front will remain over the area through
Saturday afternoon.

Extended aviation outlook... Restrictions possible in scattered
mainly afternoon evening thunderstorms Saturday. Patchy fog and
stratus possible during the early morning and sunrise hours
Sunday.

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 mi45 min SW 5.1 G 6 79°F 1011.2 hPa
WATS1 - Lake Wateree, SC 24 mi75 min SE 1.9 G 2.9 74°F

Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Columbia - Jim Hamilton L.B. Owens Airport, SC6 mi72 minSSE 310.00 miFair77°F73°F90%1012.3 hPa
McEntire Air National Guard Weather Facility Base, SC9 mi67 minSSE 32.00 miFog/Mist74°F73°F100%1012.9 hPa
Columbia, Columbia Metropolitan Airport, SC13 mi69 minSSW 310.00 miMostly Cloudy77°F73°F88%1011.9 hPa
Winnsboro/Fairfield County Airport, SC23 mi70 minS 410.00 miFair73°F71°F94%1012.5 hPa
Shaw Air Force Base, SC23 mi67 minS 53.00 miFog/Mist76°F73°F93%1012.1 hPa

Wind History from CUB (wind in knots)
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Last 24hrCalmS5S6S4W6W4CalmS44CalmCalmCalmCalmS4S4S4S3S3CalmCalmCalmCalmS3Calm
1 day ago644433S9S73CalmS4CalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalm
2 days agoCalmCalmCalmW4SW5S6SW5S7E7
G20
3SW7CalmW5CalmCalmCalmCalmCalmCalmCalmCalmCalmE34

Tide / Current Tables for Pimlico, West Branch, Cooper River, South Carolina
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Pimlico
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Fri -- 03:33 AM EDT     1.95 feet High Tide
Fri -- 06:30 AM EDT     Sunrise
Fri -- 10:28 AM EDT     -0.03 feet Low Tide
Fri -- 11:52 AM EDT     Moonrise
Fri -- 04:16 PM EDT     1.84 feet High Tide
Fri -- 08:21 PM EDT     Sunset
Fri -- 10:51 PM EDT     0.35 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.71.21.71.91.91.81.410.60.2-000.30.81.31.71.81.81.61.310.60.40.4

Tide / Current Tables for Jamestown Bridge, Santee River, South Carolina
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Jamestown Bridge
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Fri -- 12:30 AM EDT     0.05 feet Low Tide
Fri -- 04:37 AM EDT     1.27 feet High Tide
Fri -- 06:28 AM EDT     Sunrise
Fri -- 11:51 AM EDT     Moonrise
Fri -- 01:00 PM EDT     0.02 feet Low Tide
Fri -- 05:16 PM EDT     1.19 feet High Tide
Fri -- 08:21 PM EDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.10.10.50.91.21.31.210.80.60.40.20.100.20.611.21.21.10.90.80.60.4

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 (9,2,3,4)
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Ground Weather Radar Station Columbia, SC
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weather_mapweather_map weather_map

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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.