000
FXUS65 KPIH 032046
AFDPIH
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE POCATELLO ID
146 PM MST WED DEC 3 2008
.SHORT TERM...TONIGHT THROUGH FRIDAY NIGHT.
CLOUDY CONDITIONS HAVE PERSISTED OVER MUCH OF THE AREA TODAY. LOTS
OF LOW LEVEL MOISTURE HANGING AROUND. A QUICK MOVING SHORTWAVE
TROUGH IS CROSSING THE BC/WASHINGTON BORDER THIS AFTERNOON AND IS
EXPECTED TO ARRIVE INTO EASTERN IDAHO LATE TONIGHT AND EARLY
TOMORROW MORNING. THIS IS NOT A PARTICULARLY STRONG SYSTEM...BUT
IS EXPECTED TO PRODUCE SOME SNOW IN THE EASTERN AND SOUTHERN
HIGHLANDS TONIGHT. SINCE THIS IS A RELATIVELY WEAK SYSTEM...THERE
IS NOT MUCH WIND. THUS DOWNSLOPE EFFECTS ARE MINIMIZED. THINK THAT
THERE IS A GOOD CHANCE FOR PRECIPITATION IN THE SNAKE PLAIN FROM
BURLEY TO POCATELLO TO IDAHO FALLS AS THIS MOISTURE BEGINS TO RISE
INTO THE HIGH COUNTRY. EVEN THE VALLEYS IN THE SOUTHERN AND
EASTERN HIGHLANDS COULD SEE SOME SNOW. AMOUNTS LOOK
LIGHT...GENERALLY LESS THAN AN INCH IN THE VALLEYS...PERHAPS 1 TO
3 INCHES IN THE MOUNTAINS. THIS SYSTEM WILL QUICKLY PULL AWAY FROM
THE AREA TOMORROW AFTERNOON. LOW CLOUDS COULD ONCE AGAIN DEVELOP
IN THE SNAKE PLAIN THURSDAY NIGHT...ALTHOUGH LATEST RUN OF THE NAM
IS NOT AS EVIDENT AS OTHER RUNS HAVE BEEN. ANOTHER WEAK SYSTEM
ARRIVES FRIDAY NIGHT...BUT PRECIP LOOKS TO BE MAINLY CONFINED TO
THE HIGHER TERRAIN IN THE CENTRAL MOUNTAINS AND NEAR YELLOWSTONE.
BREEZY CONDITIONS EXPECTED AHEAD OF THIS SYSTEM ON FRIDAY...BUT
MUCH LESS THAN WHAT THE AREA SAW ON TUESDAY.
.LONG TERM...SATURDAY THROUGH WEDNESDAY.
RIDGE FLATTENS SOMEWHAT BY SATURDAY BUT MODELS STILL KEEPING
PRECIPITATION TO THE NORTH. I DID NOT CHANGE PRECIPITATION GRIDS
ALL THAT MUCH IN THE EXTENDED PERIOD WITH MODELS STILL NOT TOO
CONSISTENT ON SMALL SCALE FEATURES. STILL CONSISTENT WITH DROPPING
A SYSTEM SOUTHEAST ON SUNDAY INTO MONDAY TIME PERIOD AND UPPED
PRECIPITATION THIS SUNDAY INTO MONDAY TIME FRAME. GFS KEEPS
NORTHWESTERLY FLOW TUESDAY INTO WEDNESDAY AS RIDGE REBUILDS ALONG
PACIFIC COAST. KEPT LOW PRECIPITATION CHANCES IN THIS TIME FRAME
WITH EUROPEAN MODEL NOT AS STRONG WITH RIDGE ALLOWING SOME MORE
MOISTURE INTO IDAHO THAN GFS. TEMPERATURES EXPECTED TO BE ABOVE
NORMAL INTO NEXT WEEK.
GK
&&
.AVIATION...STRATUS HAS PERSISTED THROUGHOUT THE DAY IN SNAKE RIVER
PLAIN. EXPECT WEAK SYSTEM TO DROP SOUTHEAST OVERNIGHT WITH THE
CHANCE FOR SOME SNOW WITH CONTINUED MVFR CONDITIONS AT BYI...PIH AND
IDA INTO THURSDAY MORNING. SHOULD IMPROVE TO VFR CONDITIONS BY
THURSDAY AFTERNOON BEHIND THIS SYSTEM. GK
&&
.PIH WATCHES/WARNINGS/ADVISORIES...
NONE.
&&
$$
