Tuesday, November21, 2017 L-36.com


Marine Weather and Tides
Marietta, 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 7:15AMSunset 5:32PM Tuesday November 21, 2017 5:21 AM EST (10:21 UTC) Moonrise 9:48AMMoonset 8:13PM Illumination 8% 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 Marietta, GA
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location: 34, -84.47     debug


Area Discussion for - Peachtree City, GA
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Fxus62 kffc 210802
afdffc
area forecast discussion
national weather service peachtree city ga
302 am est Tue nov 21 2017
short term today through Wednesday ...

surface high pressure over the western atlantic and eastern
seaboard is causing low level moisture clouds to increase
across the forecast area. This low level flow will also aid
the potential for enough upward vertical motion to allow for
mainly small chances for light rain across much of the forecast
area favoring only slightly the far NE mountains and the southern
portion of central ga.

A weak cold front is forecast to move across the area tonight and
the first portion of Wednesday. This will continue mainly small
chances for light rain overnight favoring east and central ga and
portions of central ga on Wednesday.

The increase of low level moisture today will allow for areas
of fog tonight and will need to monitor for dense fog potential.

Forecast high temperatures are running within 1-3 degrees of
normal today and Wednesday. Forecast low temperatures are running
4-8 degrees above normal tonight.

Overall confidence is low to medium.

Bdl

Long term Wednesday night through Monday
Models in the long term continue to vary from run to run on the
evolution of thanksgiving day system but fortunately have more
agreement among themselves than at any point in the last several
days. Both indicate a developing area of low pressure by the start
of the extended period over the gulf of mexico. The GFS is
slightly stronger and further north with the system than the ecmwf
but overall deep moisture profiles are very similar with this run.

By Wed night, precipitable water values in excess of 1.4 inches
are moving into portions of central ga in increasing favorable
isentropic upglide environment.

Given the good model agreement, will go with likely pops for the
extreme southern tier but give a sharp gradient to pops with less
than 20 for the atlanta metro. It should be noted though that it
would take very little in surface low displacement northward to
go from nothing to near washout for areas along i20 on
thanksgiving.

Model differences continue through Friday with GFS faster with the
progression of low and ECMWF remaining displaced southward
although both models show a florida peninsula track. This should
allow drier air to be drawn in on the north side of the system
Friday into the weekend effectively ending rain chances. Fairly
benign pattern thereafter with just a dry front to contend with
before high pressure builds in for the remainder of the period.

Deese

Aviation 06z update... Increasing potential for MVFR and
possibly ifr ceilings this morning along with patchy to areas of
light rain and drizzle during the day. Confidence for ceiling
heights and rain drizzle chances are low and will need to be
monitored. Some improvement during the day to high MVFR toVFR
ceilings. Surface winds light and variable or light se-ne.

Potential for low clouds and fog tonight.

Atl confidence... 00z update...

high confidence for winds today.

Low to medium confidence for all other elements.

Bdl

Preliminary point temps pops
Athens 57 44 62 39 20 10 0 5
atlanta 59 45 60 40 20 10 0 5
blairsville 56 38 56 32 20 10 0 5
cartersville 58 41 57 35 20 10 0 5
columbus 65 49 65 42 20 20 5 10
gainesville 55 44 60 39 20 10 0 5
macon 65 47 65 43 20 20 5 10
rome 60 40 57 33 10 5 0 5
peachtree city 61 44 61 37 20 10 0 5
vidalia 68 52 67 47 30 30 10 20

Ffc watches warnings advisories
None.

Short term... Bdl
long term... .Deese
aviation... Bdl


Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Marietta / Dobbins Air Force Base, GA6 mi26 minN 010.00 miOvercast44°F34°F71%1020.5 hPa
Cobb County International Airport - McCollum Field, GA7 mi34 minVar 310.00 miOvercast45°F35°F68%992.9 hPa
Atlanta, De Kalb-Peachtree Airport, GA12 mi29 minVar 310.00 miMostly Cloudy44°F36°F73%1020.9 hPa
Fulton County Airport-Brown Field, GA15 mi29 minN 010.00 miMostly Cloudy44°F37°F79%1020.4 hPa
Cartersville Airport, GA22 mi29 minESE 310.00 miMostly Cloudy44°F37°F76%1020.1 hPa
Atlanta, Hartsfield - Jackson Atlanta International Airport, GA24 mi30 minENE 510.00 miOvercast45°F39°F80%1020.2 hPa

Wind History from MGE (wind in knots)
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Last 24hrNW3CalmSW1SE1CalmE4SE3S5SE1SE5E5E6SE3E3E3E3E1E1CalmCalmCalmNE3CalmCalm
1 day agoNW11
G22
NW10
G18
NW10
G18
N12
G19
NW15
G22
NW12NW11
G20
W11
G18
NW15
G20
NW10
G17
W13
G21
NW9NW5NW9NW6NW8NW8NW7NW6NW6NW8NW5NW5NW4
2 days agoE4E3E3S5S6S8S6S8S5S6S9S7S7S9SW6
G15
S11
G16
SW10
G22
W14W17
G24
W15
G28
NW18
G27
NW12
G20
NW13
G25
NW14
G21

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 (5,6,7,8)
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Ground Weather Radar Station Atlanta, GA
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weather_mapweather_map weather_map

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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.