FXUS65 KPIH 251455
AFDPIH

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE POCATELLO ID
800 AM MST WED NOV 25 2009

.SHORT TERM...TODAY THROUGH FRIDAY NIGHT. A QUICK UPDATE THIS 
MORNING TO REMOVE MENTION OF FOG. SEE PREVIOUS DISCUSSION BELOW. 
HUSTON

THE UPPER RIDGE WILL CONTINUE TO DOMINATE THE WEATHER PATTERN 
THROUGH THURSDAY NIGHT AHEAD OF THE NEXT BUILDING SYSTEM IN THE 
PACIFIC. WHILE CONDITIONS ARE EXPECTED TO REMAIN DRY UNDER CLEAR 
SKIES...VALLEY TEMPERATURES WILL REMAIN CAPPED BELOW NORMALS WITH AN 
INVERSION IN PLACE TODAY AND THURSDAY. IN ADDITION...PATCHY FOG AND 
LOW STRATUS IN THE UPPER SNAKE VALLEY WILL STICK AROUND THIS MORNING 
AND TONIGHT. THE NEXT SYSTEM ARRIVES AT OUR EASTERN BORDER EARLY 
FRIDAY AND SPREADS ACROSS THE FORECAST AREA BY FRIDAY AFTERNOON. 
MODELS ARE STILL A BIT INCONSISTENT ON THE STRENGTH OF THIS 
SYSTEM...HOWEVER THE TREND IS TOWARDS A SPLITTING SYSTEM WITH MINOR 
PRECIPITATION EXPECTED. BEST POTENTIAL FOR SNOW SHOWERS WILL BE IN 
THE CENTRAL MOUNTAINS AND HIGHLANDS FRIDAY AND FRIDAY NIGHT BEFORE 
THE STORM FALLS APART AND EXITS TO THE EAST. WINDS PICK UP ON FRIDAY 
AND FRIDAY NIGHT...ESPECIALLY IN THE SNAKE PLAIN HOWEVER DO NOT 
EXPECT ADVISORY LEVEL WINDS AT THIS TIME. HANKO

.LONG TERM...SATURDAY THROUGH WEDNESDAY.
GFS AND EUROPEAN BOTH SHOW A SECONDARY SYSTEM COMING THROUGH THE 
REGION ON SATURDAY. THE GFS CARRIES QUITE A BIT MORE MOISTURE WITH 
IT THAN THE EUROPEAN. KEPT THE ONGOING FORECAST THE SAME WHICH IS 
MORE OR LESS A COMPROMISE OF THE TWO MODELS. THIS KEEPS A CHANCE OF 
SNOW IN THE VALLEYS AND SNOW LIKELY IN THE MOUNTAINS. HIGH PRESSURE 
THEN BUILDS ACROSS THE AREA THROUGH TUESDAY WHEN A SHORTWAVE TROUGH 
IS EXPECTED TO PASS THROUGH. THE EUROPEAN IS A LITTLE DEEPER WITH 
THE SYSTEM THAN THE GFS AND HAS A LITTLE MORE PRECIPITATION THAN THE 
GFS. AT THIS POINT...AM CONTINUING TO CONFINE SNOW CHANCES FOR THE 
MOUNTAINS. LOOKS LIKE HIGH PRESSURE BUILDS BACK IN FOR WEDNESDAY. 
TEMPS LOOK TO BE BELOW NORMAL DURING THIS TIME.
&&

.AVIATION...SOME LIFR FOG REMAINS POSSIBLE AT KIDA BRIEFLY THIS 
MORNING DUE TO THE RECENT SNOWFALL. OTHERWISE...EXPECT LIGHT WINDS 
UNDER HIGH PRESSURE AND VFR CONDITIONS.
&&

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

$$