Wednesday, May24, 2017

Marine Weather and Tides
Atlanta, GA

Version 3.4
What's New / NOTES
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 6:29AMSunset 8:39PM Wednesday May 24, 2017 9:27 AM EDT (13:27 UTC) Moonrise 4:48AMMoonset 6:26PM Illumination 1% Phase: Waning Crescent; Moon at 28 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 Atlanta, GA
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location: 33.76, -84.42     debug

Area Discussion for - Peachtree City, GA
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Fxus62 kffc 241116
area forecast discussion
national weather service peachtree city ga
716 am edt Wed may 24 2017

Prev discussion issued 334 am edt Wed may 24 2017
short term today through Thursday ...

a complicated weather pattern is on tap for the cwfa today. An old
frontal boundary is situated across south central south ga. A
secondary frontal boundary is currently pushing east over far NW al
and central ms. The northern-most front is associated with a bit
more forcing aloft than the southern boundary, but both fronts
should have waves of low pressure move along them today.

Showers and thunderstorms will develop in association with both
systems today. The northern system may have storms a bit more
dynamically forced, especially as these areas are closer to the
steeper lapse rates mid level forcing and deep shear. However, the
storms in the vicinity of the southern frontal boundary should have
more surface instability to work with with some marginal deep layer
shear present. The primary severe weather threat should be damaging
wind gusts. However, isolated tornadoes (everywhere) and a few large
hail reports (mainly north) are not out of the question.

For the last 48 hours, the axis of heaviest rainfall has been
across the southern cwfa. Good moisture will still be present, and
some training of storms is possible today. Even though pwats are
forecast to be between 1.25 and 1.5 inches, locally heavy rainfall
will continue to be a threat - especially over where soils remain
saturated. Given these points, will actually extend the flash
flood watch - in time - to 00z (8pm) this evening.

The airmass will dry out a bit as the behind the cold front on
Thursday. However, a few storms will remain possible across portions
of the northern cwfa as an upper low trough move through.

long term Thursday night through Tuesday ...

upper low cold core aloft expected to move across al tn and georgia
Thursday night with the trough axis moving east of the forecast area
btwn 15-18z Thursday. Shortwave ridge of high pressure will maintain
dry and stable conditions through Saturday, with temperatures
quickly bouncing back during the day Fri sat, after cooler mornings.

Moisture will gradually increase this weekend as W swerly flow
becomes more pronounced across the region ahead of large upr vortex
dropping south from central canada over the northern plains upper
midwest. By Sunday and into the first part of next week, several
shortwaves will interact with sufficient moisture and low lvl convg
along a west-east oriented frontal boundary to support an increasing
chance of shower and a few thunderstorms. This "system" is not
looking nearly as impressive as what we've been dealing with over
the past few days but it will bring the area more rain, on top of
what we've had already. Drier air moves in from the northwest late
Monday into Tuesday with a nearly stationary frontal boundary across
north florida south georgia - where lingering chances for
showers storms will exist Tuesday. Temperatures into early next week
should remain around normal for late may -- lower to mid 80s for
highs and mid 60s for lows.


12z update...

no major changs to the TAF for this cyle. CIGS should continue to
lift to MVFR by 14z. By then, shra should begin approaching from
the west. The hi-res models are all over the place with the precip
and timing coverage today. So, have tried to blend the trends with
persistence. Winds should remain on the west side.

Atl confidence... 12z update...

medium confidence all elements.

Preliminary point temps pops
Athens 76 56 74 55 80 40 30 0
atlanta 74 55 72 58 80 40 10 0
blairsville 68 51 68 50 80 40 40 10
cartersville 73 54 73 54 80 40 20 0
columbus 77 57 77 58 80 40 10 0
gainesville 72 55 71 56 80 40 40 0
macon 77 56 76 55 80 50 10 0
rome 73 54 74 54 80 40 20 0
peachtree city 75 55 74 53 80 40 10 0
vidalia 80 61 78 59 80 70 10 0

Ffc watches warnings advisories
Flash flood watch through this evening for the following zones:
baldwin... Banks... Barrow... Bibb... Bleckley... Butts... Carroll...

chattahoochee... Cherokee... Clarke... Clayton... Cobb... Coweta...

crawford... Crisp... Dekalb... Dodge... Dooly... Douglas... Emanuel...

fayette... Forsyth... Glascock... Greene... Gwinnett... Hall...

hancock... Haralson... Harris... Heard... Henry... Houston...

jackson... Jasper... Jefferson... Johnson... Jones... Lamar...

laurens... Macon... Madison... Marion... Meriwether... Monroe...

montgomery... Morgan... Muscogee... Newton... North fulton...

oconee... Oglethorpe... Paulding... Peach... Pike... Polk... Pulaski...

putnam... Rockdale... Schley... South fulton... Spalding... Stewart...

sumter... Talbot... Taliaferro... Taylor... Telfair... Toombs...

treutlen... Troup... Twiggs... Upson... Walton... Warren...

washington... Webster... Wheeler... Wilcox... Wilkes... Wilkinson.

Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Atlanta, Fulton County Airport-Brown Field, GA5 mi34 minS 510.00 miOvercast67°F66°F97%1000.8 hPa
Atlanta, Hartsfield - Jackson Atlanta International Airport, GA7 mi35 minS 910.00 miOvercast67°F64°F91%1001.2 hPa
Atlanta, De Kalb-Peachtree Airport, GA10 mi34 minS 510.00 miOvercast67°F64°F91%1000.8 hPa
Marietta / Dobbins Air Force Base, GA13 mi89 minS 45.00 miFog/Mist66°F64°F96%1001.3 hPa
Marietta, Cobb County-McCollum Field Airport, GA20 mi40 minSSW 47.00 miMostly Cloudy66°F66°F100%1003 hPa

Wind History from FTY (wind in knots)
Last 24hrS6S4S5S5Calm3S6S7S8SW7S4S4N9CalmW3CalmW3CalmCalmW3CalmS4S4S5
1 day agoCalm4N3S7CalmSW4W5Calm3CalmCalmCalmSE3CalmCalmCalmE3CalmS3S3S3S3S5SW5
2 days agoCalmCalmNW3NW7W5W5W7SW53W4W3CalmCalmCalmCalmCalmCalmCalmNE3CalmCalmCalmCalmN4

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 (9,2,3,4)
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Ground Weather Radar Station Atlanta, GA
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weather_mapweather_map weather_map

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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.