Saturday, April29, 2017 L-36.com


Marine Weather and Tides
Columbus, GA

Version 3.4
What's New / NOTES
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.
3/12/2015 - Added section for Gulf current for users in the GMZ marine zones.
This was requested by a user. If you have requests, please let me know.

Sunrise 6:52AMSunset 8:21PM Saturday April 29, 2017 7:26 AM EDT (11:26 UTC) Moonrise 8:49AMMoonset 11:02PM Illumination 12% Phase: Waxing Crescent; Moon at 3 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 290736
afdffc
area forecast discussion
national weather service peachtree city ga
336 am edt Sat apr 29 2017

Short term /today through Sunday/
Warmer than normal temperatures will make it feel like the beginning
of summer rather than springtime today.

High pressure aloft and at the surface will continue off the
southeast coast today and Sunday. Low level moisture will continue
to stream northward, but there are no synoptic surface features of
note to provide focus for any convection today or during the early
part of Sunday. However, with the good low level moisture and
heating, orographically induced convection will be possible.

Elsewhere, convection will have to be triggered by outflow boundaries
or any other mesoscale features... Such as a differential heating
boundary. Forecast soundings show a decent capping inversion today
and a somewhat stronger one on Sunday - keeping the activity
isolated to scattered at best both days.

If convection does develop today, storms could be strong, with an
isolated severe storm possible. Forecast soundings do show a nice
inverted-v structure with steepening lapse rates. Gusty winds and
hail would be likely within any strong/severe storms that develop.

High temperatures today will average around 10 degrees above normal.

Nlistemaa

Long term /Sunday night through Friday/
Still looking at two main systems impacting the extended forecast
period, late Sunday night and Monday and then later in the week
generally centered on Thursday.

Initial system Sunday night and Monday continues to look like it
brings at least a marginal risk for severe weather. Strong
southwesterly upper flow ahead of a fairly deep upper low points to
some potential before midnight, especially across the west. Main
threat approaches after midnight entering the far west before
daybreak as the associated cold front enters the state. Cold front is
progged to make steady progress across the forecast area through the
day Monday despite the parent surface low lifting well north into the
western great lakes. Medium range models continue to minimize the
instability somewhat as the system approaches Sunday night into early
Monday. MUCAPE values drop below 800 and 850-500mb lapse rates drop
to 6 degrees or less. Some diminished instability is to be expected
in the overnight period, but we will need to watch actual trends
closely. Nevertheless, with moderate low-level shear expected to
accompany the main area of convection, severe threat cannot be
ignored. Deeper layer shear appears to lag a bit behind main system
at this time. Moderate recovery to instability during the day Monday
as the system shifts into the eastern half of the forecast area and
moderate low-level shear maintains the severe threat.

A bit of a break behind this initial system through Wednesday before
the next system approaches by early Thursday. Will likely see a
return of isolated to scattered showers or thunderstorms as early as
Wednesday but main impacts are still centered on Thursday, lingering
into Friday. Still a bit of a spread between the main medium range
models concerning the exact track and timing of the surface and
upper-level features with this system but all show a good shot of
mild to cool air filling in behind the system going into the weekend.

20

Climate
Records for 04-29
max temperature min temperature
station high low high low
------- ---------- ---------- ---------- ----------
kahn 90 1915 50 1999 66 1975 38 1973
1970 1928
katl 88 1894 47 1934 67 2014 39 1992
1989
1970
kcsg 92 1943 57 1934 71 1970 39 1928
1927
kmcn 92 2012 50 1934 68 1970 37 1992
1914
aviation...

06z update...

models are keeping the the low clouds well to the west overnight,
but not confident enough to remove the few008 right around 12z.

Some patchy MVFR fog is also possible right around sunrise. Bkn
MVFR CIGS expected during the afternoon. Winds will remain on the
se side.

//atl confidence... 06z update...

medium confidence on clouds/fog. Otherwise, high confidence
remaining elements.

Preliminary point temps/pops
Athens 87 66 85 68 / 20 20 10 50
atlanta 86 68 84 67 / 20 10 10 60
blairsville 83 62 78 62 / 30 30 30 60
cartersville 87 67 84 66 / 20 10 10 70
columbus 89 69 87 69 / 20 10 5 60
gainesville 85 66 82 66 / 20 20 20 60
macon 90 67 88 69 / 10 5 5 30
rome 88 67 85 65 / 20 10 10 70
peachtree city 87 65 84 66 / 20 5 10 60
vidalia 91 69 88 70 / 5 0 5 20

Ffc watches/warnings/advisories
None.

Short term... Nlistemaa
long term... .20
aviation... Nlistemaa


Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Columbus, Columbus Metropolitan Airport, GA3 mi36 minN 09.00 miA Few Clouds70°F66°F87%1017.6 hPa
Fort Benning, GA14 mi89 minSE 40.50 miFog65°F64°F100%1017.7 hPa

Wind History from CSG (wind in knots)
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Last 24hrCalmS5S9S10S7S11SW10SW11
G17
SW11S12
G19
S10SW9S5S5SE3S4S6S4CalmCalmCalmCalmCalmCalm
1 day agoS15
G20
S10SW12
G26
S11S5--W8
G18
SW3S4SW5NW7
G17
CalmCalmE3E4SE3CalmS3CalmSW3S4CalmCalmCalm
2 days agoCalmCalmW5W83S9
G14
SW8
G14
S10S7SE8SW9
G16
S8S11S7S6S6S7S8S8S7S7S6S9S8

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
wmap_A
IR Satellite Image from GEOS
east_satellite

GOES Local Image of Southeast    EDIT
Geos

Wind Forecast for Peachtree City, GA (7,2,3,4)
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Ground Weather Radar Station Atlanta, GA
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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.