763 
fxus65 kpih 230953 
afdpih 


Area forecast discussion 
National Weather Service Pocatello Idaho 
253 am MST Monday Nov 23 2009 


Short term...today through Wednesday night. Snow and wind 
producing trough has moved into Wyoming this morning and 
precipitation has diminished across the area. Upper ridge builds 
into northwest today where it is expected to remain for the next 
several days. An upper wave pushing into British Columbia today 
will ride over the top of the ridge on Tuesday with the southern 
extent of the precipitation band cliping the northern reaches of 
the forecast area...then clipping the Wyoming border Tuesday 
night. The ridge restrengthens and shifts east into Idaho on 
Wednesday and Wednesday night. Slight chance probability of precipitation will continue 
today near the Wyoming border with lingering instability. Low 
chance probability of precipitation return to the upper snake Highlands on with the wave 
moving over the ridge on Tuesday and Tuesday night. Otherwise...a 
return to fair skies...however temperatures will be quite cold 
overnight with high temperatures moderating to near seasonal by 
Wednesday. Through the period. Hanko 


Long term...Thursday through Sunday...both the ecm and GFS delay 
arrival of precipitation associated with the next Pacific 
disturbance until Friday. There still is quite a bit of run to run 
variation in the shape of the trough and placement of 
precipitation. The current forecast maintains the trend for Friday 
and Saturday. Once this disturbance passes...a high pressure ridge 
develops over Oregon with northerly flow over Idaho and generally 
cooler temperatures. Receiver station 




&& 


Aviation...scattered low clouds producing localized MVFR cloud deck 
along the eastern bench areas of the snake plain this morning. 
Clouds should dissipated around 18z but may redevelop Tuesday 
morning in the upper snake plain near kida. Receiver station 




&& 


Pih watches/warnings/advisories... 
none. 
&& 


$$