Tuesday, May23, 2017 L-36.com

Marine Weather and Tides
Acworth, 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 6:30AMSunset 8:41PM Tuesday May 23, 2017 2:55 AM EDT (06:55 UTC) Moonrise 4:06AMMoonset 5:17PM Illumination 6% Phase: Waning Crescent; Moon at 27 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 Acworth, GA
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location: 34.1, -84.62     debug

Area Discussion for - Peachtree City, GA
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Fxus62 kffc 230548
area forecast discussion
national weather service peachtree city ga
148 am edt Tue may 23 2017

Prev discussion /issued 1000 pm edt Mon may 22 2017/

no changes to the forecast. Showers increasing tonight with
some storms. Flash flood watch continues.

prev discussion... /issued 710 pm edt Mon may 22 2017/
short term /tonight through Tuesday night/...

surface boundary has become nearly stationary with convection
developing in the vicinity of the front and also areas southward.

These showers and tstorms appear to be pretty efficient rain
producers with pwats of 1/5 to 2 inches across most of the cwa
through tonight. With the front lingering and the second short wave
moving across the CWA tonight, thinking that the QPF amounts may be
a bit too low but confidence in raising them is not quite there yet.

Having said that, still think there is a risk of isolated flash
flooding tonight and will therefore maintain the flash flood watch.

The short wave will exit the CWA Tuesday bringing a brief respite to
the cwa. The h5 trough and will continue to dig southward and eject
a strong cold front that will move into the CWA late Tuesday
night/early Wednesday morning. QPF amounts are not as great with
this, however instabilities increase with capes increasing ahead of
the cold front as well as lapse rates and 6km bulk shear. This
should bring a risk of isolated severe storms late Tuesday night
across mainly the western parts of the cwa.

long term /Wednesday through Monday/...

no changes made to the extended forecast. The extended period
starts off with the GFS and NAM both increase deep layer shear
going into the Wed morning hours which is juxtaposed with the
left exit region of the 250mb jet. Models are more sporadic and
broad with QPF in this period so confidence is medium on how
things will evolve... Especially given the unknown impact of the
first wave moving through Tuesday am. For now have kept pops in
the likely category and included thunder as well. May see a fairly
stout line of convection develop in the eastern half of the state
late Wed am into the afternoon as models forecast additional
destabilization during the day.

Of greater note is the 00z ECMWF solution with an upper low
cutting off much further south than previous solutions over
central al and shifting eastward across ga on thu. GFS is much
further north with the cut off portion... But does extend the base
of the trof into the same general area. GFS and ECMWF 500 mb temps
with the low/trof drop to -21 to -22 across the region on thu.

Sounding climatology suggests that those temps would be one of and
very close to the coldest on record for may at atl should it
occur... And most certainly a record for the date. In
response..Afternoon highs both Wed and Thu are forecast to remain
in the low 70s which is right around record low MAX temps.

Overnight lows drop into the low 50s Thu am and Fri am as well and
while much below normal and cool... Records are generally in the

Nice weather on tap through Sunday before another trof digs into the
central us and rain chances again increase in response. Models vary
on the evolution of the trof... But agree that one is forecast to


06z update...

yet another very challenging cig forecast for the next 24 to 36
hours with a series of weak areas of low pressure moving across
the terminals. CIGS thus far slow to fall but expect an overall
trend to ifr by daybreak with continued increase in shra and
embedded tsra. Models holding onto ifr a little longer and will
follow suit in keeping til 17z. Winds will be tricky as well with
the vicinity of low and have gone with a brief period of NE before
low shifts to the east of the terminals and winds go back to light

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

medium on wind direction and ifr start time.

High on remaining elements.


Preliminary point temps/pops
Athens 77 64 76 56 / 90 70 70 30
atlanta 77 65 75 57 / 80 70 70 30
blairsville 72 59 69 51 / 70 70 80 30
cartersville 78 64 74 54 / 70 70 70 30
columbus 79 67 78 58 / 80 70 70 20
gainesville 75 64 73 56 / 90 70 80 30
macon 77 67 79 58 / 90 70 70 30
rome 77 62 75 54 / 70 70 70 30
peachtree city 77 65 76 55 / 80 70 70 30
vidalia 79 68 79 62 / 80 70 70 50

Ffc watches/warnings/advisories
Flash flood watch through Wednesday afternoon for the following
zones: baldwin... Banks... Barrow... Bibb... Bleckley... Butts...

carroll... Chattahoochee... Cherokee... Clarke... Clayton... Cobb...

coweta... Crawford... Crisp... Dekalb... Dooly... Douglas... Fayette...

forsyth... Glascock... Greene... Gwinnett... Hall... Hancock...

haralson... Harris... Heard... Henry... Houston... Jackson... Jasper...

jefferson... Jones... Lamar... Macon... Madison... Marion...

meriwether... Monroe... Morgan... Muscogee... Newton... North
fulton... Oconee... Oglethorpe... Paulding... Peach... Pike... Polk...

pulaski... Putnam... Rockdale... Schley... South fulton... Spalding...

stewart... Sumter... Talbot... Taliaferro... Taylor... Troup...

twiggs... Upson... Walton... Warren... Washington... Webster...

wilkes... Wilkinson.

Short term... Deese
long term... .Djn.83
aviation... Deese

Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Marietta, Cobb County-McCollum Field Airport, GA6 mi4.1 hrsN 05.00 miFog/Mist68°F68°F100%1016.3 hPa
Cartersville, Cartersville Airport, GA12 mi63 minN 06.00 miLight Rain Fog/Mist66°F66°F100%1011.6 hPa
Marietta / Dobbins Air Force Base, GA13 mi58 minNE 36.00 miLight Rain Fog/Mist69°F67°F96%1012.1 hPa
Dallas Paulding County Regional Airport, GA22 mi61 minN 07.00 miOvercast68°F0°F%1012.9 hPa
Atlanta, De Kalb-Peachtree Airport, GA23 mi63 minN 01.50 miRain Fog/Mist69°F66°F93%1011.9 hPa
Atlanta, Fulton County Airport-Brown Field, GA23 mi63 minESE 37.00 miLight Rain69°F69°F100%1012.1 hPa

Wind History from RYY (wind in knots)
Last 24hr--------------CalmCalmCalmCalmNW4CalmNW8NW8NW5SW4--NW4NW4CalmCalmCalmCalm
1 day ago--------------CalmCalmCalmCalmNW4CalmW4--W8W8CalmW5CalmCalmCalmCalmCalm
2 days ago--------------Calm--SE4CalmCalmSE4CalmCalmSE4SE9SE6CalmS15CalmCalmCalmCalm

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
IR Satellite Image from GEOS

GOES Local Image of Southeast    EDIT

Wind Forecast for Peachtree City, GA (2,6,7,8)
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Ground Weather Radar Station Atlanta, GA
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weather_mapweather_map weather_map

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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.