Friday, May25, 2018

Marine Weather and Tides
Marietta, GA

Version 3.4
What's New / NOTES
5/20/2018 -- NOAA is having problems with the data feed that I use to draw the graphs. They are aware of the issue and working to resolve it. Sometimes changing the location by about a mile will give a correct graph. 3/3/2018 - There is a new GOES Satellite for the east coast that required rewriting that part of the code. Please report any issues.

Sunrise 6:28AMSunset 8:41PM Friday May 25, 2018 2:51 PM EDT (18:51 UTC) Moonrise 4:00PMMoonset 3:21AM Illumination 83% Phase: Waxing Gibbous; Moon at 11 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 Marietta, GA
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location: 34, -84.47     debug

Area Discussion for - Peachtree City, GA
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Fxus62 kffc 251818
area forecast discussion
national weather service peachtree city ga
218 pm edt Fri may 25 2018

Prev discussion issued 726 am edt Fri may 25 2018
prev discussion... Issued 331 am edt Fri may 25 2018
short term today through Saturday ...

tropical airmass continues over the cwfa through the short term
period of the forecast. The main weather hazard would be localized
flooding with heavy rain. Even though plenty of fuel exists for
thunderstorms, severe weather is not anticipated at this time.

However, a few strong storms are possible.

Synoptic pattern remains favorable for deep tropical moisture to
keep pushing northward from the gomex through tomorrow. Analysis
shows that pwats have increased to near 2sd above normal this
morning (close to 1.8"). Values are expected to increase slightly
through the period. The highest QPF values through tonight are
expected across the southern third of the cwfa. However, even
showers will be capable of producing locally heavy rainfall in this
atmosphere, so will leave the flood watch as is for now. Not
comfortable expanding it into Saturday at this time, but additional
watches in the long term portion of the forecast are likely.

The hrrr seems to be currently be struggling with the precip
breaking out across the eastern portions of the cwfa. The locally
run WRF does have a better handle on the situation and have trending
pops accordingly for today and tonight. Not confident on pop
placement for Saturday. Haven't made changes to the short term
blend for this period.

long term Saturday night through Thursday ...

although the GFS has continued to trend closer to the more westerly
ecmwf and NAM solution concerning the potential tropical system in
the gulf of mexico this weekend into early next week, there still
remains plenty of variation amongst the medium range models through
the extended forecast period. However, all of the model solutions
point to a continued period of fairly wet weather for the region.

Models all continue to drift the weak tropical low northward into the
eastern gulf initially but begin diverging with respect to strength
and movement through the weekend and into early next week. Ultimate
disposition of this system still very uncertain, but the forecast
area should see precipitable water values well above seasonal normals
through the period with good chances for precipitation every day.

All-in-all, with the varied model solutions and no clear favorite
emerging just yet, I have based the extended forecast grids on
blended model data.


18z update...

widespread showers and isolated thunderstorms have developed
across our SE tier, impacting mcn and ahn through the rest of the
afternoon. Mixed bag of MVFRVFR CIGS with reduced vsbys
associated with any heavy showers. We may see this activity expand
further north and west over timing, impacting the metro TAF sites
and csg later this afternoon evening. Activity should diminish
after midnight with redevelopment of showers thunderstorms by late
morning early afternoon on Saturday. CIGS will come down to
MVFR ifr later tonight through mid-morning, lifting by late
morning. Patchy fog is possible. Looks like skies try to clear a
bit tomorrow afternoon with better coverage of precipitation
further north late tomorrow afternoon evening. Winds will be out
of the SE this afternoon, becoming sse. Models show winds briefly
becoming ssw in the mid- morning, but confidence is low on this.

Atl confidence... 18z update...

medium confidence all elements.


Preliminary point temps pops
Athens 78 66 84 67 70 60 40 40
atlanta 79 68 83 69 60 60 50 40
blairsville 76 63 78 63 50 60 60 60
cartersville 82 67 83 67 50 50 60 50
columbus 83 69 85 69 70 50 50 40
gainesville 76 67 81 67 60 60 60 50
macon 81 68 84 68 70 60 50 40
rome 84 68 84 67 50 50 60 50
peachtree city 80 67 84 67 60 50 50 40
vidalia 84 70 86 70 60 40 40 40

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

carroll... Chattahoochee... Cherokee... Clarke... Clayton... Cobb...

coweta... Crawford... Crisp... Dawson... Dekalb... Dodge... Dooly...

douglas... Emanuel... Fayette... Forsyth... Glascock... Greene...

gwinnett... Hall... Hancock... Harris... Heard... Henry... Houston...

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

laurens... Lumpkin... Macon... Madison... Marion... Meriwether...

monroe... Montgomery... Morgan... Muscogee... Newton... North
fulton... Oconee... Oglethorpe... Paulding... Peach... Pickens...

pike... Pulaski... Putnam... Rockdale... Schley... South fulton...

spalding... Stewart... Sumter... Talbot... Taliaferro... Taylor...

telfair... Toombs... Treutlen... Troup... Twiggs... Upson... Walton...

warren... Washington... Webster... Wheeler... White... Wilcox...

wilkes... Wilkinson.

Short term... Nlistemaa
long term... .20
aviation... 26

Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Marietta / Dobbins Air Force Base, GA6 mi55 minE 710.00 miMostly Cloudy80°F67°F66%1016.1 hPa
Cobb County International Airport - McCollum Field, GA7 mi63 minVar 410.00 miMostly Cloudy79°F68°F69%989.4 hPa
Atlanta, De Kalb-Peachtree Airport, GA12 mi58 minVar 510.00 miMostly Cloudy82°F66°F60%1015.4 hPa
Fulton County Airport-Brown Field, GA15 mi58 minESE 610.00 miMostly Cloudy81°F69°F67%1015.7 hPa
Cartersville Airport, GA22 mi58 minVar 310.00 miA Few Clouds83°F68°F61%1015.5 hPa
Atlanta, Hartsfield - Jackson Atlanta International Airport, GA24 mi59 minSE 810.00 miMostly Cloudy79°F68°F69%1016.3 hPa

Wind History from MGE (wind in knots)
Last 24hrE8E7SE3--E5E5E6E8E5SE3E3E6E4E5E5N3NE4E6NE6E8E6E7E5E7
1 day agoN4N5E4N2N4NW4E4E3E3E4E3CalmE5E3E4E5E5E5E4NE4NE7NE3E6E6
2 days agoE5SE3SE7W5N4NE4E3NE4SE4E7SE6E4SE4CalmCalmCalmCalmCalmN3NE3E1NE4NE5E8

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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GOES Local Image of Southeast    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.
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Other links: Northern Pacific     Contential US     Full GOES-East
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.