Friday, August18, 2017

Marine Weather and Tides
Acworth, 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 7:01AMSunset 8:22PM Friday August 18, 2017 2:14 PM EDT (18:14 UTC) Moonrise 2:36AMMoonset 4:58PM Illumination 13% Phase: Waning Crescent; Moon at 26 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 181712
area forecast discussion
national weather service peachtree city ga
112 pm edt Fri aug 18 2017

Updated for the 18z aviation discussion.

Prev discussion issued 735 am edt Fri aug 18 2017
short term today through Saturday ...

as a strong short wave moves across the great lakes today... Cyclonic
flow will extend southward into the tn valley. Showers associated
with a frontal boundary have been on-going into southern tn through
the night. The front is expected to push into north ga today. This
will help with the development of convection and it should be
enhanced by diurnal heating. Frontal dynamics and moisture look
limited toward central ga today so the pops have been kept in the
low chance range. Not too confident on how far south into the
forecast area the front will get... However models are consistent
with showing drying into north ga later this afternoon and evening
so pops diminish from the north during that time frame. Saturday
looks a bit more stable and drier for much of north ga... However
instability and moisture linger across the remainder of the area.

Pops have been continued mainly for central ga on Saturday. No big
changes in temperatures except some gradual lowering of dew points
through Saturday for much of the area.

long term Saturday night through Thursday ...

the upper level trough continues to swing northeastward Sunday
morning, which allows zonal flow aloft through the day Sunday with
upper level ridging and surface high pressure to set up just east
and northeast of the forecast area. Extended models in good
agreement stalling weakened surface boundary over southeast
portions of forecast area Sunday evening through Monday.

A relatively benign pattern will set up for the beginning of the
week. However there will be enough moisture across the area the
diurnally driven showers and thunderstorms cannot be ruled out
each afternoon and evening. As the aforementioned surface boundary
will act as a focus for afternoon convection, the bulk of any
showers and thunderstorms are expected to remain south of the
path of the solar eclipse. Will continue slight to low chance pops
through the week.

The upper ridging begins to break down on Tuesday and surface high
shifts off the georgia coast as the next system sets up. Extended
models begin to diverge as impulses move through the flow north of
the forecast area. Weakening front again moves through portions of
georgia Wednesday into Thursday.

Guidance temperatures showing near normal through the period and
will continue to take a blend. Temperatures during the
eclipse (Monday) look to stay steady an hour before the maximum
obscurity (between 1pm-2pm), then drop a couple degrees up to 30
minutes after MAX obscurity (3pm). Temperatures are expected to
rebound quickly after the eclipse. The temperature drop will be
less for those under cloud cover precipitation. This drop in
temperature is not expected to impact the high temperature Monday


18z update...

cu field and scattered light showers sprinkles will continue this
afternoon, ending from the northwest through the afternoon. Skies
will become clear tonight with patchy fog late tonight. CU field
will redevelop Saturday morning. Winds will be light westerly this
afternoon, calm near calm tonight and light westerly again
Saturday morning.

Atl confidence... 18z update...

high on all elements.


Preliminary point temps pops
Athens 92 71 92 70 30 20 10 10
atlanta 90 72 91 73 20 10 10 10
blairsville 84 63 87 64 30 5 10 5
cartersville 90 69 91 69 20 5 10 5
columbus 94 75 94 75 20 10 20 10
gainesville 89 70 91 71 20 10 10 5
macon 94 74 94 72 20 20 10 10
rome 90 68 92 69 30 5 10 5
peachtree city 91 70 92 70 20 10 10 10
vidalia 96 76 94 75 20 20 20 10

Ffc watches warnings advisories

Short term... 17
long term... .01
aviation... 17

Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Cobb County International Airport - McCollum Field, GA6 mi24 minNW 610.00 miMostly Cloudy86°F69°F57%1016 hPa
Cartersville Airport, GA12 mi22 minVar 410.00 miA Few Clouds88°F71°F57%1014.3 hPa
Marietta / Dobbins Air Force Base, GA13 mi77 minW 1410.00 miMostly Cloudy87°F70°F59%1015.1 hPa
Dallas Paulding County Regional Airport, GA22 mi40 minNW 510.00 miPartly Cloudy88°F73°F62%1016.9 hPa
Atlanta, De Kalb-Peachtree Airport, GA23 mi45 minW 810.00 miPartly Cloudy86°F69°F59%1016.3 hPa
Fulton County Airport-Brown Field, GA23 mi22 minW 1110.00 miA Few Clouds87°F70°F57%1014.6 hPa

Wind History from RYY (wind in knots)
Last 24hrW7
1 day ago4W745W8W7W4W5W5W3SW3W3CalmCalmCalmW5CalmW4NW6NW6W7W8
2 days ago6W8W10W11W9W5E5CalmCalmNW3W5W5SW4W5CalmCalmNW3CalmW5NW56W5NW6W6

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 (14,3,4,5)
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Ground Weather Radar Station Atlanta, GA
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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 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 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.