FXUS65 KPIH 260835
AFDPIH

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE POCATELLO ID
135 AM MST THU NOV 26 2009

.SHORT TERM...TODAY THROUGH SATURDAY NIGHT. THE UPPER RIDGE WILL 
REMAIN OVER THE NRN ROCKIES THROUGH TODAY...TO BE REPLACED BY SW 
FLOW ON FRIDAY. THE NEXT SYSTEM MOVES INTO THE PAC NW ON FRI...AND 
EVOLVES INTO A SPLIT FLOW SYSTEM AS IT MOVES INLAND. THE FCST AREA 
WINDS UP IN THE DEAD ZONE BETWEEN THE NORTHERN AND SOUTHERN STREAMS. 
LIGHT PRECIP MOVES INTO THE CEN MTNS ON FRI...THEN SPREAD ACROSS THE 
REST OF THE AREA FRI NIGHT. THE BULK OF THE PRECIP WITH THIS SYSTEM 
WILL BE NORTH AND SOUTH OF THE FCST AREA. DRIER NW FLOW MOVES OVER 
THE PAC NW AS AN UPPER RIDGE APPROACHES THE W COAST SAT NIGHT. HEDGES

.LONG TERM...SUNDAY THROUGH THURSDAY. A RIDGE OF HIGH PRESSURE WILL 
BE BUILDING OVER THE REGION THROUGH THE FIRST HALF OF THE EXTENDED. 
WILL CONTINUE SLIGHT CHANCE FOR SNOW ON SUNDAY IN THE MOUNTAINS WITH 
MODELS SHOWING SOME MOISTURE STREAMING INTO THE AREA FROM THE 
NORTHWEST. NOT EXPECTING ANYTHING SIGNIFICANT FROM THIS. REMOVED 
PRECIPITATION CHANCES FOR SUNDAY NIGHT THROUGH MONDAY NIGHT SINCE IT 
LOOKS LIKE HIGH PRESSURE WILL BE FIRMLY IN CONTROL. MODELS SHOW NEXT 
SYSTEM ARRIVING TUESDAY/TUESDAY NIGHT. THIS WILL PRODUCE THE NEXT 
CHANCE FOR PRECIPITATION. BULK OF THE SYSTEM WILL PASS TO THE NORTH. 
NOT EXPECTING MUCH PRECIP FOR THE VALLEYS FROM THIS SYSTEM. MODELS 
DIVERGE AFTER THIS WITH THE GFS REMAINING PROGRESSIVE AND CLEARING 
WHILE THE EUROPEAN CLOSES OFF THE LOW OVER THE NORTHERN ROCKIES AND 
CONTINUES TO SPIN MOISTURE THROUGH THE AREA. FAVOR THE GFS SOLUTION 
SINCE THE EUROPEAN SOLUTION IS TOTALLY DIFFERENT FROM ANY OF THE 
OTHER PREVIOUS RUNS. WILL KEEP JUST A SLIGHT CHANCE FOR SNOW IN THE 
HIGHER TERRAIN. TEMPS ARE EXPECTED TO REMAIN NEAR NORMAL DURING THE 
EXTENDED. 
&&

.AVIATION...FR CONDITIONS AND LIGHT WINDS ARE EXPECTED THROUGH THE 
NEXT 24 HOURS AT ALL TAF SITES.
&&

.PIH WATCHES/WARNINGS/ADVISORIES...NONE.
&&

$$