535 
fxus65 kpih 052045 
afdpih 


Area forecast discussion 
National Weather Service Pocatello Idaho 
245 PM MDT Sat Jul 5 2008 


Discussion...Sat imagery showing shortwave travelign through 
Idaho this afternoon and evening. Cumulus field has formed through 
central mountains and along Divide with light showers already early 
just north of Divide. Have left isolated probability of precipitation along northern tier 
zones with just enough dynamics/sunshine left in weakly unstable 
airmass to spark a few showers remainder of today. Winds in Snake 
Valley still a little higher than previously anticipated. Thus 
will keep lake Wind Advisory in place for remainder of this 
afternoon. Second wave currently just offshore near 
California/Oregon coast arrives early in the day Sunday with 
another round of isolated mainly weak convection over higher 
terrain. Upper ridge in place for a dry Tuesday. Then progressive 
mainly flat flow settles in for remainder of forecast period. Tried to 
pin convective chances on model depiction of middle- level moisture 
availability...which appears to increase beginning late Thursday 
into next weekend. Pacific trough moves inland to break down upper 
ridge Fri/Sat. Given lack of amplified pattern most of the 
upcoming week...temperatures remain fairly flat with no significant day- 
to-day changes. Dmh 




&& 


Aviation...widespread VFR. Isolated thunderstorms mainly over the 
central mountains and along the Montana border this evening. Dsh 




&& 


Fire weather...one more upper level shortwave to pass through the 
district Sunday with increased cloud cover and continued threat of 
convection...mainly along the Montana and Wyoming border regions. 
Otherwise a broad upper level ridge rebounds over the Pacific 
northwest Monday and gradually shifts to zonal flow midweek. Dry 
conditions expected to dominate through much of the week with light 
to moderate winds. Dsh 




&& 


Pih watches/warnings/advisories... 
lake Wind Advisory until 8 PM MDT this evening for idz021. 


&& 


$$