599 
fxus63 ksgf 172239 
afdsgf 


Area forecast discussion 
National Weather Service Springfield MO 
539 PM CDT Wednesday Mar 17 2010 


..update to aviation... 


Short term (tonight through friday)... 


Water vapor imagery depicts upper level low centered over 
northeast Oklahoma and digging south of the Missouri Ozarks. 
Surface high pressure will build into the plains and the Ozarks 
overnight with cloud cover decreasing overnight. However...with 
clearing skies...light winds and a moist boundary layer...fog 
development will be possible through early Thursday morning. 
Upper ridging will build into the Ozarks Thursday afternoon 
bringing a return of sunshine and warmer weather. 


A shortwave digging through The Rockies will produce leeside 
cyclogenesis in western Kansas late Thursday and Friday. 
Southerly return flow will develop along with Gulf moisture 
transport. A surface cold front will track east through the 
plains and move into southeast Kansas late Friday bringing a 
chance for scattered rain showers and isolated thunderstorms. 
Instability is expected to be limited which would hinder the 
potential of strong to severe thunderstorms. 


Angle 


&& 
long term (saturday through wednesday)... 


The warmer weather will come to an end this weekend as the next 
upper trough swings across the central U.S. On Saturday. Showers and 
perhaps a few thunderstorms will progress across the area Friday 
and Saturday with the associated cold front. Colder air will quickly 
follow the frontal passage while precipitation will linger behind 
the front. Rain will likely become mixed with or change to snow 
later Saturday and Saturday night. Little if any accumulation is 
expected at this time. However the speed and track of this system 
will have be monitored. Colder air will settle for Sunday into early 
next week maintaining the generally below normal temperatures. 
Moderating temperatures will return by the middle of next week. 


Foster 




&& 


Aviation... 


For the 00z tafs...satellite shows some signs of stratus breaking 
up in central Missouri as best area of moisture continues to slide 
south. Expecting some clearing to try and take place late tonight 
at the terminal locations. With a light wind...will probably see 
some fog develop in the wake of any clearing. For now have dropped 
to around 2 miles with a tempo 1sm for 10z-14z. Will need to 
monitor clearing trends during the evening. After fog breaks in 
the morning though should see some sun for a change with VFR 
conditions developing by late morning. 


Lindenberg 


&& 


Sgf watches/warnings/advisories... 
MO...none. 
Kansas...none. 
&& 


$$