000 
FXUS65 KMSO 291444
AFDMSO

WESTERN MONTANA AND NORTH CENTRAL IDAHO FORECAST DISCUSSION
NATIONAL WEATHER SERVICE MISSOULA MT
845 AM MDT SAT JUN 29 2002

.SHORT TERM...WILL UPDATE ZFP/SFP THIS MORNING BY 915 AM MDT. A
SECONDARY FRONTAL BAND WILL BE MOVING THROUGH THE CWA THIS MORNING
WITH WIDESPREAD SHOWERS ACCOMPANYING IT. LOOKS PRETTY DRY BEHIND THIS
FRONTAL BAND...PER SATELLITE IMAGERY. THE OVERALL TREND OF FORECAST
IS GOOD...BUT WILL DROP LIKELY WORDING OUT OF THE WEST CENTRAL
MONTANA ZONE FORECAST AND GO CATEGORICAL FOR THIS MORNING. CLEARING
SKIES EXPECTED ABOUT NOON-TIME...BUT PLENTY OF LOW-LEVEL MOISTURE AND
INSTABILITY PRESENT FOR THE DEVELOPMENT OF AFTERNOON SHOWERS...EVEN A
SLIGHT CHANCE OF THUNDERSTORMS. WILL BE KEEPING A CLOSE EYE ON WINDS
ON FLATHEAD LAKE FOR POTENTIAL LAKE WIND ADVISORY THERE THIS
AFTERNOON.  MSJ

.LONG TERM...TUESDAY AND WEDNESDAY WILL SEE AN INITIAL ZONAL FLOW
SHIFT SLIGHTLY SOUTHWESTERLY AS AN UPPER LEVEL TROUGH DROPS SOUTHWARD
OFF THE PACIFIC COAST. AS THIS HAPPENS...THE IDAHO AND NORTHWEST
MONTANA ZONES WILL BE CLIPPED BY A WEAK JET WHICH COULD TRIGGER A FEW
ISOLATED SHOWERS. THURSDAY AND FRIDAY THE UPPER LOW MOVES ONSHORE
AND A HIGHER AMPLITUDE PATTERN DEVELOPS...RESULTING IN BETTER
SOUTHWEST FLOW OVER THE CWA. THIS WILL BRING SOME INSTABILITY FOR A
CHANCE OF SHOWERS AND THUNDERSTORMS. GILCHRIST

.MSO...NONE.

...7-DAY SPOT TEMPS AND POPS...
LIB WEB /075 046/077 047/077 3781210
     BBBB 045/078 047/079 050/080 050/079 051/ 33111111111
FCA WEB /070 042/072 043/072 3781110
     BBBB 045/075 047/076 050/076 050/077 052/ 33111111111
POL WBB /073 048/075 049/075 3771000
     BBBB 047/077 049/078 052/079 053/078 053/ 33111111111
MSO WBU /073 045/077 047/077 3771000
     BBBB 046/080 049/081 051/082 052/080 052/ 33000012121
HMM WBU /074 044/078 045/078 3761000
     BBBB 048/081 051/082 052/083 052/081 052/ 33000012121
BTM NUU /073 040/077 042/078 3751000
     BBBB 042/075 045/077 048/079 048/076 048/ 33000113121
ORO WBU /079 052/080 054/080 3771000
     BBBB 052/084 054/084 056/082 056/084 056/ 33111111121
GRV WBU /072 046/076 047/076 3771000
     BBBB 050/080 052/081 053/080 053/081 053/ 33111111121
SMN NUU /078 045/084 047/083 3731000
     BBBB 048/080 050/082 051/083 053/084 052/ 33000013121