Wednesday, August21, 2019 L-36.com


Marine Weather and Tides
Athens-Clarke County, GA

Version 3.4
NOTICE
7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports.
6/2/2019. Many thanks to a user for reporting an error on one of the Edit pages. The switch to PHP 7.2 caused many pages that previously worked to quit working. I fixed many but I still depend on users to report ones I missed. Please report errors HERE or send an email to me at L-36.com. Allen

Sunrise 6:58AMSunset 8:15PM Wednesday August 21, 2019 8:45 PM EDT (00:45 UTC) Moonrise 10:47PMMoonset 11:19AM Illumination 61% Phase: Waning Gibbous; Moon at 21 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 Athens-Clarke County, GA
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location: 33.9, -83.31     debug


Area Discussion for - Peachtree City, GA
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Fxus62 kffc 220035
afdffc
area forecast discussion
national weather service peachtree city ga
835 pm edt Wed aug 21 2019

Update
Made a few minor tweaks to the near-term forecast grids. Generally
adjusted the hourly temperatures dew points and pops to match current
trends. Convection has remained fairly sparse with a bit less overall
cloud cover than expected. Made a very slight adjustment to the
minimum temperatures for tonight as well, but not more than a degree
or two.

20

Prev discussion issued 745 pm edt Wed aug 21 2019

00z aviation forecast discussion...

short term tonight through Thursday night ...

slightly drier air and weak subsidence are expected to continue
today following the passage of a weak meso-low pressure system that
is continuing to the northeast. Isolated to scattered showers have
already begun in the northeast georgia mountains and in central
georgia, defying most of the suggested guidance. However, coverage
and intensity are expected to remain relatively lower with pwats just
over 1.5". Highs in the 90s expected this afternoon, with lows in
the lower 70s tonight.

Broad upper-level troughing will begin to get more zonal tomorrow
with southwesterly low-level flow continuing to increase moisture in
the region. Pwats around 1.7-1.8" expected by tomorrow afternoon
which will aid diurnally-driven convection, with the highest pops
expected over north georgia. Highs in the 90s once again expected
tomorrow afternoon, with lows in the lower 70s tomorrow night.

On an additional note, lows in the 70s are expected to continue over
the next several days. So far this year, we have had 77 days with
minimum temperatures at or above 70 degrees, as of aug 20th. This is
the most days with lows at or above 70 degrees at this point of the
year we've seen on record. Furthermore, the top 4 years in this
category have all occurred in the last decade: 75 in 2016, 74 in
2010, and 72 in 2018.

Thiem
long term Friday through Wednesday ...

only tweaks to the long term based on the latest guidance.

Bdl
previous discussion...

a moist and unstable air mass will continue under the flat ridge
aloft. However... A broad trough moving across the great lakes this
weekend should push a frontal boundary into ga. This front looks
like it will stall in the vicinity of central ga on Saturday with
a wedge building into north ga. This configuration should keep
chance to likely showers and thunderstorms across the area. By the
first of next week... An upper level trough moves across the oh and
tn valley region keeping north and central ga in an unstable
environment. High temperatures should moderate mostly into the 80s
by the weekend and into next week.

41
bdl
aviation...

00z update...

vfr conditions are expected to predominate across the forecast area
through the majority of this forecast period. Will see local to
isolated areas of MVFR or lower visibilities develop between 04z and
14z. At this time no impacts are expected at any of the TAF sites.

Isolated convection this evening will diminish into the early
morning hours. Scattered convection will develop again across the
forecast area by 15-18z. West to southwest winds diminish to 5kt or
less by 04z, then increase to 6-10kt by 16-18z.

Atl confidence... 00z update...

high.

20

Preliminary point temps pops
Athens 72 93 71 91 20 40 30 60
atlanta 72 91 73 90 20 40 40 60
blairsville 67 84 65 82 30 50 40 70
cartersville 71 92 72 90 20 50 40 60
columbus 73 93 73 93 30 40 30 40
gainesville 71 90 72 90 20 40 40 60
macon 70 94 73 94 30 30 30 40
rome 71 92 72 91 20 50 40 70
peachtree city 70 93 72 92 20 40 30 50
vidalia 73 94 73 94 30 30 20 30

Ffc watches warnings advisories
None.

Short term... 20
long term... .Bdl
aviation... 20


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
CHDS1 - Strom Thurmond Dam, SC 61 mi85 min SSW 1.9 G 5.1 88°F

Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Athens, Athens Airport, GA4 mi54 minSW 310.00 miFair86°F69°F57%1016.2 hPa
Winder, Winder-Barrow Airport, GA20 mi70 minN 010.00 miFair90°F68°F49%1018.3 hPa
Greensboro, Greene County Regional Airport, GA23 mi70 minS 410.00 miPartly Cloudy90°F69°F52%1017.3 hPa

Link to 5 minute data for KAHN

Wind History from AHN (wind in knots)
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Last 24hrE4------------------Calm------34SW64SW7W5W4SW4W3SW3
1 day agoCalmCalmSE3------NE3------CalmE3CalmSE33CalmNW3S3NE4Calm4CalmS4E5
2 days agoCalmE3SE3------Calm----CalmCalmCalmS3CalmCalmE5Calm44--4S4--Calm

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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wmap_A
GOES Local Image of    EDIT
NOTE: East coast views moved to GEOS-16. They are experimental and not well supported by NOAA so they may not be correct so be warned. This change required redoing a large amount of the GOES code. If the image you are expecting is not showing, please let me know. You may need to use the EDIT function to update your location.
Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Peachtree City, GA (20,4,5,8)
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Ground Weather Radar Station Greer, SC
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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.