Thursday, August17, 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 6:57AMSunset 8:20PM Thursday August 17, 2017 1:43 AM EDT (05:43 UTC) Moonrise 1:35AMMoonset 3:56PM Illumination 26% Phase: Waning Crescent; Moon at 25 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 170542
afdffc
area forecast discussion... Updated for aviation
national weather service peachtree city ga
140 am edt Thu aug 17 2017

Update
Convection ongoing across eastern sections of the forecast area so
will need to hold onto isolated pops a little while longer.

Otherwise... Forecast in great shape and no changes planned.

Deese

Prev discussion issued 831 pm edt Wed aug 16 2017
prev discussion... Issued 320 pm edt Wed aug 16 2017
short term tonight through Thursday night ...

a warm, moist airmass remains across the forecast area. Convection
has been slow to develop this afternoon and expect mainly scattered
showers and isolated thunderstorms mainly this afternoon and early
evening.

Weak upper level ridging remains over the southeast through tomorrow
before building west over the northern gulf of mexico. The flow
aloft flattens some by tomorrow evening with a weak disturbance
approaching north ga toward the end of the forecast period. A weak
surface boundary will remain east of the area throughout the period
as well. With upper level dynamics lacking, and only minimal
instability expect diurnally driven convection today and tomorrow,
with any development diminishing quickly with the loss of daytime
heating.

Guidance temperatures are in line, and continue to show overnight
lows mainly in the 70s with afternoon highs tomorrow once again in
the upper 80s to mid 90s. Heat indices tomorrow will once again be
near 100.

Atwell
long term Friday through Wednesday ...

made very few changes to the extended forecast grids with this cycle
as medium-range models continue recent trends. Broad, weak mid upper
ridging breaks down over the weekend in response to the sharpening
upper trough moving out of the northern central plains into the ohio
valley and great lakes before beginning to re-establish itself early
next week. Please see the previous long term forecast discussion
below.

20
previous long term forecast discussion Thursday night through
Tuesday ...

a fairly progressive pattern, especially noted by the northern
stream jet, will continue through the long term. Energy across
the NW canadian provinces will dig down into the upper mid-west
and move eastward. While this energy does not sink too far south
into our region, we will get some residual mid and upper level
support, especially this weekend. Models are in disagreement with
how much interaction we will see with these features, especially
as it translates down to the surface. There are a couple key areas
to look at.

The first is the frontal passage progged to move through much of
the area by early Saturday morning. The GFS is a bit more robust
with this feature showing a lot more drying through the weekend
across north ga; the front becoming stalled in central ga. The
ecmwf shows a hint of the front moving through with some subtle
drying Saturday into Sunday, but has this boundary becoming
washed out slipping north allowing moist unstable airmass to surge
a bit further northward as compared to the GFS by Sunday afternoon.

Nevertheless, still feel better chances of convection will be
across central ga, collocated with the boundary.

All eyes are now on Monday, august 21st when the eclipse is set to
cross the SE during the afternoon hours. As the surface high moves
off the mid-atlantic, this will usher in moist southerly flow
across the region. This is not good for those hoping for clear
skies. Both models are still holding on to weak mid-level ridging,
although impulses moving NE from a wave of low pressure across the
gc region will aid in the formation of convection across the
region. The GFS illustrating a bit more upper level support as
opposed to the ecm. What does this mean in the end? Well, the
pattern is not conducive for mostly clear skies. However, this is
a typical summer time pattern across the region. So, viewing the
eclipse is still a potential, between all the building
cumulonimbus and convection. One may just have to be at the right
place at the right time. There is still a lot of uncertainty at
this point. We will continue to update the forecast with new model
guidance and hope the mid-level ridge strengthens with surface
high pressure slowing its eastward progression.

Temperatures will be at or above normal and will be largely
dependent on overall cloud cover and convection. Temperatures
fluctuations during the eclipse (Monday afternoon between 1pm and
3pm) may drop a few degrees, but is largely correlated with cloud
cover and the path of totality.

26
aviation...

06z update...

expect aVFR forecast through the period with diurnal cumulus.

Have included prob30 for the afternoon. Winds should remain on
the west side.

Atl confidence... 06z update...

high on all elements.

41

Preliminary point temps pops
Athens 74 92 74 92 20 30 20 40
atlanta 75 91 75 91 20 30 20 40
blairsville 69 86 69 86 20 40 20 40
cartersville 74 91 74 89 20 30 20 40
columbus 76 93 77 93 20 30 20 40
gainesville 74 90 74 90 20 30 20 40
macon 76 93 76 95 20 30 20 40
rome 74 91 74 91 20 30 20 40
peachtree city 74 91 74 91 20 30 20 40
vidalia 77 94 77 94 20 30 20 50

Ffc watches warnings advisories
None.

Short term... 41
long term... .Rw
aviation... 41


Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Gainesville, Gilmer Memorial Airport, GA7 mi50 minWSW 410.00 miFair77°F73°F88%1017.7 hPa
Gwinnett County Airport-Briscoe Field, GA18 mi5 hrsW 610.00 miMostly Cloudy79°F73°F84%1017.9 hPa
Winder, Winder-Barrow Airport, GA23 mi48 minN 010.00 miPartly Cloudy77°F71°F83%1019.3 hPa

Wind History from GVL (wind in knots)
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Last 24hrW4W4W4W6NW5W6W6NW5W54N6W7W7SW9W105SW7CalmW4W3W3S4SW3SW4
1 day agoCalmW4W3W4W7W5W6W7W8W9NW9NW6W8W9W8W9W8W7NW5W7W4W4NW5NW4
2 days agoCalmCalmE5E4NE4NE5NE5E6E6E55SE4S856S7E7SE6SE4W5CalmSE3SE3S3

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 (1,6,7,8)
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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.