Tuesday, November21, 2017 L-36.com


Marine Weather and Tides
Oakwood, 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 7:13AMSunset 5:29PM Tuesday November 21, 2017 4:28 PM EST (21:28 UTC) Moonrise 9:46AMMoonset 8:10PM Illumination 10% 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 Oakwood, GA
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location: 34.24, -83.95     debug


Area Discussion for - Peachtree City, GA
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Fxus62 kffc 211952
afdffc
area forecast discussion
national weather service peachtree city ga
252 pm est Tue nov 21 2017

Short term tonight through Wednesday night
Weak high pressure off the southeast coast will continue to build
away from the forecast area, and surface winds will shift to the
north and northwest overnight. The tail end of a longwave trough
will shift across north georgia through tomorrow afternoon. The
trough will help pull an inverted surface wave just south of the
forecast area through early tomorrow evening. These features will
bring a quick shot of increased moisture across the area tonight,
with some clearing beginning in the northwest by mid morning
tomorrow as cool high pressure builds into north georgia. Only
limited rain chances through the period, slight chance tonight with
isolated pockets of light rain showers. Best chances, albeit low
chance, will be across central georgia tomorrow night as surface
wave moves across south georgia. With good moisture tonight, and
winds diminishing to near calm before increasing out of the
southwest tomorrow morning, we could see patchy fog develop by
midnight or shortly after. We should see fog burn off quickly
tomorrow as drier air filters into the forecast area. Short term
models are in good agreement with the overall pattern and guidance
temperatures are also close through the period. Expect overnight
lows to be near normal across much of the area, although north
georgia my be just below normal Wednesday night into Thursday
morning. Afternoon temperatures will moderate into the upper 50s
north to lower 70s southeast.

Atwell

Long term Thursday through Tuesday
Have made no changes to the long term. Models still on track for
low pressure developing in the gulf during the Thursday Friday
time frame. ECMWF still is farther south with the low than the gfs
and the the northern extent of the rain into the forecast area is
still the question. So for now the pops have not been changed. The
low pulls rapidly to the east and the remainder of the forecast
looks dry. However... Another front drops into ga late Saturday
with an accompanying band of moisture which appears limited. So
have not added any pops for Saturday or Saturday night for now.

Previous discussion is included below.

41
prev discussion... Issued 302 am est Tue nov 21 2017
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...

18z update...

vfr conditions will deteriorate after sunset, with MVFR and ifr
after 06z. Patchy fog will develop as well 06-13z with 1-3sm
visibilities. E to SE winds at 4-8kts will become light and
variable after 00z with speeds of 5kts or less. By 08z atl should
shift to NW and speeds should increase to 5-10kts after 12z.

Atl confidence... 18z update...

medium to high confidence in winds, and cig trends.

Medium confidence in visibility and timing of CIGS becoming ifr
and improvement tomorrow morning.

Atwell

Preliminary point temps pops
Athens 47 67 41 56 10 5 5 10
atlanta 47 62 42 58 20 5 5 5
blairsville 41 59 33 55 20 0 0 0
cartersville 41 59 36 58 10 0 5 0
columbus 49 67 47 62 20 5 10 10
gainesville 45 62 40 55 20 5 5 5
macon 50 70 47 59 20 5 20 30
rome 40 58 34 58 5 0 5 0
peachtree city 44 63 41 60 20 5 5 5
vidalia 55 70 49 58 20 10 40 60

Ffc watches warnings advisories
None.

Short term... Atwell
long term... .41
aviation... Atwell


Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Gainesville, Gilmer Memorial Airport, GA7 mi35 minESE 710.00 miPartly Cloudy63°F48°F60%1016.7 hPa
Gwinnett County Airport-Briscoe Field, GA18 mi32 minVar 310.00 miPartly Cloudy65°F52°F63%1016.7 hPa
Winder, Winder-Barrow Airport, GA23 mi33 minESE 310.00 miFair64°F51°F64%1017.9 hPa

Wind History from GVL (wind in knots)
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Last 24hrSE3CalmE4E5E4E4E4E5E5E6E6E6E6E4E5E8E9E9E8SE7SE6S4SE5SE7
1 day agoNW9NW8NW9NW12NW8NW7NW8CalmW4W3W6W4NW5NW3CalmCalmCalmE3E5CalmE3E5S5S5
2 days agoS6S7S9S10
G15
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G16
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G17
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G18
NW9

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
east_satellite

GOES Local Image of Southeast    EDIT
Geos

Wind Forecast for Peachtree City, GA (16,3,4,5)
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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.