Wednesday, May24, 2017

Marine Weather and Tides
Rest Haven, 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 6:26AMSunset 8:39PM Wednesday May 24, 2017 12:06 AM EDT (04:06 UTC) Moonrise 4:46AMMoonset 6:24PM Illumination 2% 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 Rest Haven, GA
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location: 34.18, -84.01     debug

Area Discussion for - Peachtree City, GA
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Fxus62 kffc 232309 aaa
area forecast discussion... Updated
national weather service peachtree city ga
709 pm edt Tue may 23 2017

Update for aviation
Prev discussion... Issued 339 pm edt Tue may 23 2017

Tornado watch continues for portions of east central georgia
until 6 pm and flash flood watch for majority of area except far
north georgia through Wednesday afternoon...

short term tonight through Wednesday night ...

latest wave of showers tstorms slowly exiting the CWA and by this
evening this area of showers tstorms will have pushed east out of
the region. With instability remaining over the CWA tonight will
need to keep low end chance pops for showers tstorms all areas. The
next wave of precip will be along and ahead of the cold front late
tonight and Wednesday. Models have waffled a bit on timing of this
front and precip but general consensus is that a line of
showers tstorms will develop along and head of the front, moving
into northwest by between 10 and 12z, moving rapidly across the cwa
and by mid afternoon Wednesday this round of showers tstorms will be
east of the region. Capes will be 1000+ at 12z ahead of the cold
front along with 60kts bulk shear. With the forced lifting of the
front, this should be enough for a few storms to become severe with
gusty winds and possibly a qlcs tornado as the line moves across the

The h5 low will be dropping into the tennessee valley Thursday
evening with very cold air aloft (-20 to -22c at h5 which is quite
cold for this time of year). This will continue to keep the
atmosphere destabilized as evident by the +100 capes on all models
Wednesday night. Will need to increase pops across north ga
Wednesday night and with the very cold temps aloft, there is the
risk of small hail with any thunderstorm.


forecast QPF through 00z Thursday should remain less than an inch,
however can't rule out an isolated 1 to 2 inch amount in some of the
heavier thunderstorms. With the previous 2 days of rainfall, flash
flooding remains a possibility with the next wave of precipitation
late tonight and Wednesday. Will therefore continue the flash flood
watch through 18z Wednesday.

long term Thursday through Tuesday ...

made minor cosmetic changes to fcst mainly to limit some precip
chances in the north for a quicker departure of the upper
low moisture by Thursday evening. Also expanded Saturday slight
chance pops for north ga given the zonal flow disturbance
influence. Otherwise rest looks on track with neighboring offices
and previous discussion follows...

prev discussion... Issued 351 am edt Tue may 23 2017
long term Wednesday night through Monday ...

much of the area will be on the backside of deep moisture plume and
associated cold front by Wednesday night with anomalously cold upper
level low approaching from the northwest. Breezy and much cooler
conditions will prevail into Thursday with clouds and scattered
showers across north georgia. Lapse rates appear steep enough to
support a few embedded thunderstorms, again mainly north of i-20.

Small hail will be possible with any storms. By late Thursday into
Thursday night, drier air will work across the area and any
showers storms will diminish.

Temperatures will gradually moderate closer to normal Friday into
the weekend as an upper level ridge over the gulf of mexico builds
slowly north. Battle between the gom ridge and a strong upper trough
digging across the northern plains upper midwest occurs over the
weekend creating an increasingly zonal flow across the area,
especially north ga. Moisture will begin to increase as this occurs
with chances for rain picking up late Saturday into Sunday. Medium
range models appear to deepen longwave trough across the eastern
conus thus resulting in an extended period of rain setting up once
again - Sunday into Monday - across the southeast region. However,
this is 5 to 6 days out and things will likely change.


00z update...

highly variable conditions across the area through Wednesday.

Potential for ifr conditions to develop overnight. Current showers
and storms expected to diminish tonight with another round
expected toward morning and into the day Wednesday. Ceilings and
vsbys will be highly variable due to the convection. Surface
winds light and variable or light ssw overnight becoming wsw 10-15
kts Wednesday with gusts 20-25 kts for some areas.

Atl confidence... 00z update...

medium confidence for winds.

Low confidence all other elements.


Preliminary point temps pops
Athens 63 75 57 73 30 80 40 20
atlanta 65 73 56 71 50 90 30 20
blairsville 60 69 52 66 50 90 60 40
cartersville 64 74 55 72 60 90 50 30
columbus 66 77 57 76 60 90 20 5
gainesville 63 73 56 69 40 90 50 20
macon 67 77 57 76 30 80 20 10
rome 63 72 54 72 70 80 60 30
peachtree city 65 75 56 72 50 90 20 10
vidalia 69 79 61 77 70 80 30 10

Ffc watches warnings advisories
Flash flood watch through Wednesday afternoon 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.

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

Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Gainesville, Gilmer Memorial Airport, GA11 mi13 minVar 46.00 miRain Fog/Mist61°F61°F100%1004.9 hPa
Lawrenceville, Gwinnett County-Briscoe Field Airport, GA14 mi3.4 hrsN 010.00 miMostly Cloudy68°F62°F83%1006.1 hPa
Winder, Winder-Barrow Airport, GA23 mi11 minNNW 510.00 miMostly Cloudy64°F60°F88%1006.8 hPa

Wind History from GVL (wind in knots)
Last 24hrCalmN4NE3NE3CalmCalmE5SE5SE6S6SW4SW4SW10SW6SW6SW8S7SW7S5S4CalmS4--4
1 day agoCalmCalmCalmCalmCalmCalmCalmCalmNE4CalmSE6N33S14
2 days agoCalmW7N4E6NE6E6E9E8E6E8E11E63NW4N6W5W64SW3CalmSW3CalmSW3W3

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 (0,6,7,8)
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Ground Weather Radar Station Atlanta, GA
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weather_mapweather_map weather_map

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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.