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356 
FXUS62 KFFC 080801
AFDFFC

Area Forecast Discussion
National Weather Service Peachtree City GA
401 AM EDT Thu Aug 8 2019


.SHORT TERM /Today through Friday/...

A near stationary frontal boundary remains across southern TN and W 
NC. A surface trough does extend into central portions of the CWFA, 
ahead of the stalled boundary. In the mid levels, a broad trough is 
situated off the SE coast with the SE US mostly in NW flow aloft. 

The front/trough will slowly push a little southward today. Not 
confident on exactly how far south, the models seem to be a little 
aggressive having the boundary settle across southern GA. Would not 
be surprised to see the front/trough settle around or just north of 
the Interstate 20 corridor. Wherever the front/trough decides to 
settle, it should become stationary. 

WV imagery shows NW flow aloft across much of the SE. NW flow aloft 
will continue through the short term forecast period. One shortwave 
is noted across NE Mississippi and will drop SE in the flow today. 
Models keep most of the energy associated with this shortwave to the 
west of GA, but it could clip the SW corner of the CWFA. 

Pops should still be fairly limited today. The highest values will 
be along the SW corner of the CWFA, south of the front/trough and 
closest to the mid level shortwave energy moving within the flow 
aloft. Even then, only isold/sct coverage is anticipated. Severe 
weather is not anticipated, but a strong storm cannot be ruled out. 

Do think pop chances will taper off after the loss of heating, but 
will keep pops into the early morning. This seems reasonable, as 
storms have continued the last two days until after midnight. Pops 
will be fairly similar on Friday, but the SCT coverage should 
extend a little further east.

NListemaa


.LONG TERM /Friday Night through Wednesday/...

Through the long term period, the high-amplitude ridge that has been 
positioned over the four corners region will continue to deamplify 
and move eastward over the southern plains. By the end of the 
extended period, this upper-level high pressure will elongated 
longitudinally and engulf most of the southern U.S. This will push 
the subtropical jet stream poleward, and increase temperatures to 
around 3-9 degrees above normal, with upper 80s and low 90s in northern Georgia and 
mid to upper 90s in central Georgia. Monsoonal moisture will also
continue moving into the region from the four corners and 
southern plains. PWATs over 2" could enter the area by Friday 
evening, with Gulf moisture continuing to move into the southeast 
from the SSW near-surface winds linked to the Bermuda High in the 
Atlantic.

Some relief may come through the weekend as a surface high pressure 
moving across the midwest attempts to push into the southern 
Appalachian states. Discrepancies continue going into the beginning 
of next week.  ECMWF continues to indicate the suppression of 
widespread precipitation, but the GFS still indicates an enhanced 
corridor of moisture with several possible MCSs moving within the 
flow to the southeastern CONUS in the beginning of next week. So 
for now we're still expecting isolated to scattered chances for 
thunderstorms with decreasing trends compared to earlier in the 
week.

Thiem

&&


.AVIATION...
06Z Update...
SCT-BKN050 during peak heating this afternoon, otherwise VFR.
Winds will remain on the west side starting out more SW overnight
and turning more NW by 12Z. Speeds should be at or right below
10kt. Pops are too low to mention at this time with VCSH
sufficing. 

//ATL Confidence...06Z Update...
High confidence all elements.

NListemaa

&&


.PRELIMINARY POINT TEMPS/POPS...
Athens          95  72  93  73 /  20  10  20  20 
Atlanta         93  75  91  74 /  20  10  30  30 
Blairsville     85  65  84  66 /  20  10  30  30 
Cartersville    92  72  89  72 /  20  10  30  30 
Columbus        96  75  94  76 /  30  20  30  30 
Gainesville     91  72  89  72 /  20  10  20  20 
Macon           96  74  95  75 /  30  20  30  30 
Rome            93  72  90  73 /  20  10  30  30 
Peachtree City  93  73  92  73 /  20  10  30  30 
Vidalia         98  75  97  76 /  30  20  30  30 

&&


.FFC WATCHES/WARNINGS/ADVISORIES...
NONE.
&&

$$

SHORT TERM...NListemaa
LONG TERM....Thiem
AVIATION...NListemaa