287 
fxus63 koax 240757 
afdoax 


Area forecast discussion 
National Weather Service Omaha/valley NE 
300 am CDT Thursday Jul 24 2008 


Discussion... 
scattered thunderstorms ongoing this morning from northeast Nebraska 
into southwest Iowa. Latest RUC data indicates strong Theta-E 
advection associated with the elevated convection this morning 
weakens after 12z then redevelops during the afternoon over western 
and central Nebraska. 


Little change to current forecast with some probability of precipitation through much of the 
short term period as area remains on the southern edge of faster flow 
across the northern plains. Main uncertainty remains timing of short 
waves in the flow with plenty of moisture available in both the middle 
and lower levels. Weak surface boundary also indicated to linger 
across the region through the weekend and help focus activity. 
Clouds and precipitation expected to limit heating so again have trended 
toward the cooler guidance values. 


No change to the extended period at this time. 00z models amplify 
upper ridge over the western Continental U.S. Next week with flow remaining 
active across the plains region. 


&& 


Aviation... 
for taf sites koma/klnk/kofk. 


MVFR ceilings will persist through middle morning as moist southeast flow 
continues to invade eastern Nebraska. Scattered thunderstorms may 
affect koma and kofk through 15z. VFR ceilings are expected through the 
day with more thunderstorms popping up in the late 
afternoon...likely after 21z...and could occur across all of eastern 
Nebraska. 


&& 


Oax watches/warnings/advisories... 
NE...none. 
Iowa...none. 
&& 


$$ 


Fobert/dergan