Saturday, November18, 2017 L-36.com


Marine Weather and Tides
Columbus, GA

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 7:11AMSunset 5:38PM Saturday November 18, 2017 9:08 AM EST (14:08 UTC) Moonrise 7:09AMMoonset 6:08PM Illumination 0% Phase: New Moon; Moon at 29 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 Columbus, GA
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location: 32.51, -84.87     debug


Area Discussion for - Peachtree City, GA
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Fxus62 kffc 181136
afdffc
area forecast discussion
national weather service peachtree city ga
636 am est Sat nov 18 2017

Prev discussion issued 301 am est Sat nov 18 2017
short term today through Sunday ...

surface high pressure currently centered across the coastal
carolinas will continue to shift offshore. Meanwhile a cold front
will approach and cross the region later this evening overnight.

High pressure will build back into the region for Sunday.

Through the remainder of tonight, expect mainly clear and calm
conditions with some patchy fog stratus possible from macon up
toward athens around sunrise. High clouds ejecting from the
approaching system will continue to filter into the region through
the morning hours. As moisture advection increases, anticipate
clouds to slowly fill in and lower through the day. We may moisten
quick enough to see some light showers develop well ahead of the
front across NW ga. However, the bulk of the precipitation should
begin to move into NW ga by late afternoon with the front. High
temperatures will be running above normal, mid 60s to the north to
mid 70s across central ga. Given the tight pressure gradient between
the exiting surface high and the approaching front, combined with
strong dpva aloft, this will be a very gusty and progressive system.

Winds will start to gust upwards of 25kts by later in the afternoon,
with gusts of 35-40kts possible with the frontal passage. The front
will move through the atl metro between 01z-04z, continuing south
and east overnight. While instability is very limited, there may be
enough aloft to promote isolated thunder along the main line of
moderate heavy rain. The main dynamics associated with this system
is quite impressive resulting in 0-6km shear values around 60-80kts.

This system will quickly exit by Sunday morning with clearing
through the morning as high pressure builds back in from the west.

Cooler and drier air will infiltrate the region as the main upper
trough pivots through the southeast. High temperatures on Sunday
will struggle to rebound and highs are only expected to reach the
mid upper 40s in the higher elevations to low 50s across the atl
metro to around 60 south of macon columbus. Winds will still be
elevated through the day, gusting to 20kts.

26
long term Sunday night through Friday ...

high pressure is in control at the beginning of the extended
period bringing a dry and cool airmass to the area. Although it
will shift offshore, the pop free conditions look to continue
through Monday night. As we approach Tuesday morning, things begin
to change and unfortunately models begin to diverge and never seem
to converge on any one solution for the remainder of the period.

Although both the GFS and ECMWF have a trough coming in tue
morning... The GFS is much sharper with the trough and resultant
upper level energy. Even with the GFS though, the mid level
moisture is lacking initially and see no more than 20 percent
chances at this time and mainly for central ga.

Remainder of the forecast will center around the evolution of
shortwave energy that moves off the pacific on Monday and through
the central plains on tue. Needless to say confidence is quite low
given the disparity in model solutions. GFS wants to create a
strong cutoff low from this shortwave which would result in the
eventual development of a surface low over north fl and widespread
rain over the local area on thanksgiving. The ECMWF is much more
progressive and keeps area completely dry for the holiday. For now
will continue to show low end pops as a compromise but likely will
not be until Monday that we get a clearer picture when shortwave
first enters contiguous us.

Deese
aviation... 12z update...

vfr conditions to start the TAF period. However, things will
quickly change, especially this afternoon evening as a front is
set to cross the region. Low level clouds are starting to move
into the region from the north and west. Winds will begin to
increase by mid morning out of the ssw, gusting upwards of
20-25kts by the afternoon. Clouds will also continue to increase,
especially later in the afternoon ahead of the front. There may be
light showers that develop during the afternoon, but the bulk of
the precipitation should occur after sunset with the main line of
rain moving through around 01z-04z this evening. Thunderstorms
should be isolated. Winds could gust upwards of 35kts along the
front. Winds will veer to the NW after the front crosses, staying
elevated through early Sunday. Expect clearing to occur through
Sunday morning.

Atl confidence... 12z update...

medium to high confidence on all elements.

26

Preliminary point temps pops
Athens 68 45 55 31 20 60 5 0
atlanta 69 43 52 32 20 70 0 0
blairsville 61 38 47 25 40 90 5 0
cartersville 68 42 51 29 30 80 0 0
columbus 74 48 57 34 10 50 5 0
gainesville 65 43 52 32 30 70 5 0
macon 74 47 58 32 5 50 10 0
rome 69 42 51 28 40 80 0 0
peachtree city 71 45 54 30 20 70 5 0
vidalia 76 55 62 37 5 40 10 0

Ffc watches warnings advisories
Wind advisory from 3 pm this afternoon to 3 am est Sunday for
the following zones: banks... Barrow... Carroll... Clarke...

clayton... Cobb... Coweta... Dekalb... Douglas... Fayette... Forsyth...

gwinnett... Hall... Heard... Henry... Jackson... Madison... Newton...

north fulton... Oconee... Rockdale... South fulton... Walton.

Wind advisory from 10 am this morning to 7 am est Sunday for the
following zones: dawson... Fannin... Gilmer... Lumpkin... Murray...

pickens... Towns... Union... White.

Wind advisory from 10 am this morning to 3 am est Sunday for the
following zones: bartow... Catoosa... Chattooga... Cherokee...

dade... Floyd... Gordon... Haralson... Paulding... Polk... Walker...

whitfield.

Short term... 26
long term... .Deese
aviation... 26


Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Columbus, Columbus Metropolitan Airport, GA3 mi77 minE 39.00 miFair50°F46°F89%1016.7 hPa
Fort Benning, GA14 mi72 minN 010.00 miFair41°F41°F99%1017.5 hPa

Wind History from CSG (wind in knots)
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Last 24hrE4SE4E4CalmCalm3S5S3CalmCalmCalmCalmCalmCalmCalmCalmCalmE3E3CalmE3CalmE3Calm
1 day agoNW6N11N9N5NW10NW9NW7N8W3NW4N3N4N3CalmCalmCalmNW3CalmCalmCalmCalmCalmN3NE3
2 days agoE9E5E63CalmCalmNE3CalmSE3N3CalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalm

Tide / Current Tables for
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Tide / Current Tables for
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Weather Map and Satellite Images
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Weather Map
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IR Satellite Image from GEOS
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GOES Local Image of Southeast    EDIT
Geos

Wind Forecast for Peachtree City, GA (9,2,3,4)
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Ground Weather Radar Station Atlanta, GA
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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.