Weather

670 
fxus63 koax 280801 
afdoax 


Area forecast discussion 
National Weather Service Omaha/valley NE 
300 am CDT Thursday Aug 28 2008 


Discussion... 
weak stalled out cold front lingering across the County Warning Area this morning 
from southeast Minnesota into northeast Nebraska. Elevated 
convection had developed on the northeast fringe of the County Warning Area prior 
to midnight in an area of good 850-700 warm advection and on nose of 
low level jet. Primary track of storms has been eastward with most 
recent satellite showing little in the way of forcing upstream. 
00z models indicate this trend with best quantitative precipitation forecast east of the area today. 
Will continue to carry some low probability of precipitation for southeast portions of the 
County Warning Area today as front pushes slowly through the remainder of the area. 
Little change to the short term forecast with warmer temperatures returning 
over the weekend as next Lee trough develops in advance of fairly 
strong upper wave coming into the western Continental U.S.. 


No change to the extended period with 00z models still showing 
series of waves moving into the west and lifting across the northern 
plains for some chance probability of precipitation around Tuesday and again late in the 
week. 


&& 


Aviation... 
for taf sites koma/klnk/kofk through 12z Friday. 


Cold front will slowly drift southeast across eastern Nebraska 
through 18z. Scattered thunderstorms possible in the kofk area 
through 14z Thursday along the front...with koma and klnk seeing a 
small chance for storms between 10z and 18z. Band of MVFR ceilings 
around fl025 will lag front through 15z...mainly affecting kofk. 
Improving conditions at all taf sites through morning...with VFR 
conditions expected after 18z. VFR weather expected through 12z 
Friday...however areas of MVFR/IFR fog will likely develop after 06z 
in eastern Nebraska...and may affect taf sites with visibilities below 2sm 
at times. 


&& 


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


$$ 


Fobert/dergan