334
FXUS65 KPIH 202108
AFDPIH
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE POCATELLO ID
208 PM MST FRI DEC 20 2024
SHORT TERM...THIS AFTERNOON THROUGH SATURDAY NIGHT
QUIET WEATHER CONTINUES ACROSS THE REGION WITH HIGH PRESSURE IN
PLACE OVER THE REGION. WE'LL HAVE ONE MORE DAY FEATURING HIGH
PRESSURE BEFORE WE GET TO A MORE ACTIVE PERIOD OF WEATHER GOING INTO
THE CHRISTMAS HOLIDAY WEEK. DAYTIME HIGHS CONTINUE TO RUN ON THE
WARMER SIDE OF NORMAL IN MOST LOCATIONS WITH UPPER 30S AND LOWER 40S
ALTHOUGH THERE AREA A FEW SPOTS RUNNING A BIT COOLER DUE TO SNOWPACK
AND A BIT MORE CLOUDS. AFTERNOON SATELLITE SHOWS MOSTLY HIGH CLOUDS
STREAMING OVER THE AREA AND THIS WILL BE COMMONPLACE THROUGH THE DAY
TOMORROW BEFORE CLOUDS REALLY BEGIN TO INCREASE LATE TOMORROW AND
INTO SUNDAY AS OUR FIRST OF MANY WEATHER SYSTEMS MOVES INTO THE
REGION. UNTIL THEN, THE ONLY CONCERN WILL BE THE POTENTIAL FOR LOW
CLOUDS AND FOG ONCE AGAIN DURING THE OVERNIGHT HOURS. THIS WASN'T
OVERLY WIDESPREAD THIS MORNING, BUT THERE WAS SOME, AND GIVEN
SIMILAR SYNOPTIC CONDITIONS WILL CONTINUE AT LEAST SOME MENTION IN
THE FORECAST. OUR HIGH PRESSURE WILL GET SUPPRESSED DURING THE
AFTERNOON TOMORROW AS A SHORTWAVE MOVES IN TO THE PACIFIC NW. PRECIP
WILL MAINLY BE FOCUSED ACROSS THE CENTRAL MOUNTAINS WITH THIS FIRST
SYSTEM AS THE SHORTWAVE MOVES NORTH OF OUR AREA. ACCUMULATIONS LOOK
LIGHT, AN INCH OR LESS, IN AREAS WHERE PEOPLE LIVE WITH THIS FIRST
SYSTEM AND MAYBE 1-3 INCHES ALONG GALENA PASS AND INTO THE
SAWTOOTHS. MORE IMPACTFUL SYSTEMS ARE EXPECTED IN THE LONG TERM
PERIOD. MCKAUGHAN
LONG TERM...SUNDAY THROUGH NEXT FRIDAY
THE PARADE OF STORM SYSTEMS (GENERALLY MODEST, PROGRESSIVE
SHORTWAVES) CONTINUES THROUGHOUT THE LONG-TERM PERIOD, FOCUSED ON
SUNDAY NIGHT/MONDAY, THEN TUESDAY NIGHT/WEDNESDAY, THEN
THURSDAY/FRIDAY, THEN NEXT SATURDAY. EXACT TIMING OF EACH SYSTEM MAY
CONTINUE TO FLUCTUATE A BIT. IN GENERAL MOST OF THESE WAVES HAVE
TRENDED JUST SLIGHTLY WETTER IN OUR MOUNTAINS, WHILE HIGH
TEMPERATURES EACH DAY IN THE 30S/40S WILL TEND TO ONLY SUPPORT
ACCUMULATING SNOW ACROSS OUR LOWEST ELEVATIONS DURING OVERNIGHT
PERIODS OR IN HEAVIER, MORE ORGANIZED BANDS. THE TUESDAY
NIGHT/WEDNESDAY SYSTEM (CHRISTMAS EVE INTO CHRISTMAS DAY) IS
POTENTIALLY LOOKING A BIT DRIER/LESS IMPACTFUL AS WE MAY BE LOOKING
AT THE OVERALL TROUGH SPLITTING, SPINNING UP A CLOSED LOW TO OUR
SOUTH. MEANWHILE, THE THURSDAY/FRIDAY SYSTEM WILL PERHAPS BE THE
STRONGEST/MOST IMPACTFUL WITH SNOWFALL AMOUNTS TRENDING UP SLIGHTLY,
POTENTIALLY EXCEEDING 6 INCHES IN MANY OF OUR MOUNTAIN RANGES. NONE
OF THESE SYSTEMS LOOK STRONG/DEEP ENOUGH TO USHER IN ANY SIGNIFICANT
COLD AIRMASS, RESULTING IN VERY LITTLE CHANGE IN TEMPERATURES RIGHT
OUT THROUGH NEXT WEEKEND.
AVIATION
VFR CONDITIONS EXPECTED THROUGH THE PERIOD WITH JUST SOME HIGH
CLOUDS AND LIGHT WINDS. COULD SEE SOME LOW STRATUS AND/OR FOG
TONIGHT WITH KIDA BEING THE MOST LIKELY CULPRIT BUT CONFIDENCE IN
THIS IS TOO LOW TO INCLUDE MENTION IN THE TAF BUT IT WILL BE
SOMETHING TO MONITOR. BEYOND 18Z SATURDAY, CIGS MAY BEGIN TO LOWER
A BIT AS WE SEE OUR FIRST OF MANY SYSTEMS MOVE INTO THE REGION.
KSUN APPEARS TO BE THE ONLY TERMINAL WITH ANY CHANCE FOR A
RAIN/SNOW SHOWER LATE TOMORROW. MCKAUGHAN
PIH WATCHES/WARNINGS/ADVISORIES
NONE.
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