094 
fxus64 kewx 211139 
afdewx 


Area forecast discussion 
National Weather Service Austin/San Antonio Texas 
539 am CST Sat Nov 21 2009 


Aviation... 
isolated rain showers/-ra and IFR-MVFR ceilings along and east of the i35 
corridor will drift slightly westward through sunrise and then 
gradually lift and dissipate by middle to VFR conditions by middle to 
late morning. VFR conditions prevailing this afternoon and evening 
as a weak surface ridge builds into the area. Ample soil moisture 
along with a weak pressure gradient and clear skies will cause 
areas of dense fog to form after 06z the will be especially quick 
to form in low lying valleys and river bottoms. Have enough 
confidence to include in the i35 taf sites at this time. The fog 
and associated ceilings will often be LIFR-vlifr at times between 08z 
and 15z. 


&& 


Previous discussion... /issued 331 am CST Sat Nov 21 2009/ 


Discussion... 
the upper low is continuing to sweep across the eastern half of 
the state. Sprinkles and a few showers will linger early this 
morning east of a line from Burnet to San Marcos to Hallettsville 
but is expected to be out of the region a few hours after 
daybreak. Otherwise...mostly sunny and mild conditions are 
expected as dry northwesterly flow prevails. Wet soils...clear 
skies and light winds will enable fog development late tonight 
through middle-morning on Sunday. Return flow off the Gulf beginning 
Sunday will lead to a gradual warming trend through Monday night. 
An approaching shortwave trough will allow for another chance of 
rain Monday night through Tuesday. However...the center of the low 
will be well to our north so chances are generally only 20-30 
percent with the higher chances across our southeastern counties 
where moisture depth will be greatest. Dry and seasonable 
conditions are expected behind the front for the latter half of 
the week. Thanksgiving looks to be mostly sunny with morning lows 
near 40 warming into the middle and upper 60s. 


&& 


Preliminary point temps/pops... 
Austin Camp Mabry 66 48 70 51 74 / - 0 0 0 - 
Austin Bergstrom international Airport 65 40 68 44 73 / - 0 0 0 - 
New Braunfels Muni Airport 66 42 71 49 75 / - 0 0 0 10 
Burnet Muni Airport 63 42 65 49 72 / - 0 0 0 - 
del Rio International Airport 72 47 72 54 74 / 0 0 0 0 - 
Georgetown Muni Airport 63 45 67 51 72 / 10 0 0 0 - 
Hondo Muni Airport 72 43 70 50 75 / 0 0 0 0 10 
San Marcos Muni Airport 65 41 71 50 74 / - 0 0 0 - 
La Grange - Fayette regional 66 47 70 49 74 / 10 0 0 0 10 
San Antonio International Airport 70 45 70 52 74 / 0 0 0 0 10 
Stinson Muni Airport 70 46 71 51 75 / 0 0 0 0 10 


&& 


Ewx watches/warnings/advisories... 
none. 
&& 


$$ 


25/01