903 
fxus64 kmaf 210458 
afdmaf 


Area forecast discussion 
National Weather Service Midland/Odessa Texas 
1058 PM CST Thursday Nov 20 2008 


Discussion... 
see 06z discussion below. 




&& 


Aviation... 
biggest concern with overnight issuance remains low-level clouds. 
Latest 11-3.9u imagery showing low-level cloud development across 
much of the Pecos River valley...with additional development further 
east across portions of the big County. As evening cooling wares 
on...main concern is potential for low-level cloud fill-in across 
the Permian Basin. 00z kmaf sounding shows a pronounced frontal 
inversion located near h80...thus feel ceilings should be confined 
near or slightly above this layer. Latest observation from kink/kfst/kcnm 
indicate broken ceilings near 5kft...which supports this reasoning. 
Best moisture pooling from pronounced northeasterly flow all 
afternoon will remain confined to the west...thus have only made a 
sct040 mention for now at eastern terminals through the early 
morning hours. Another concern is low-level wind shear as latest 
kmaf vwp continues to indicate 40kt winds roughly 4kft above the 
surface. In spite of this have decided to maintain low level wind shear mention 
for the next couple of hours after which...the middle-level vorticity maximum 
responsible for the higher winds will have passed off to the east. 
Otherwise...gradual veering of winds expected through the 
afternoon tomorrow before coming southerly by the conclusion of 
the forecast period. 


&& 


Maf watches/warnings/advisories... 
nm...none. 
Texas...High Wind Warning until 1 am MST Friday for the following 
zones... Guadalupe Mountains. 




&& 


$$ 


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