990
FXUS65 KBOI 082143
AFDBOI
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE BOISE ID
243 PM MST THU JAN 8 2026
SHORT TERM...TONIGHT THROUGH SATURDAY NIGHT
COOL AND UNSTABLE
NORTHWEST FLOW CONTINUES THROUGH FRIDAY. BREEZY WEST TO
NORTHWEST WINDS THIS AFTERNOON WILL SLOWLY SUBSIDE OVERNIGHT.
ENOUGH INSTABILITY REMAINS FOR SNOW SHOWERS OVER THE MOUNTAINS
THIS AFTERNOON AND AGAIN ON FRIDAY, WITH FLURRIES POSSIBLE IN
THE VALLEYS THROUGH THIS EVENING. CONDITIONS DRY OUT ON FRIDAY
AS A RIDGE BUILDS ACROSS THE WESTERN US. TEMPERATURES WILL BE
NEAR NORMAL TODAY, MODERATING A FEW DEGREES EACH DAY AS THE
RIDGE DEVELOPS.
LONG TERM...SUNDAY THROUGH THURSDAY
LITTLE UPDATE FROM
PREVIOUS FORECASTS, A RIDGE CONTINUES TO BUILD OVER THE REGION
THROUGH THE LONG TERM. CONDITIONS WILL BE DRY WITH A NEAR ZERO
PERCENT CHANCE FOR PRECIPITATION. THE HIGH PRESSURE WILL SUPPORT
INVERSION DEVELOPMENT, KEEPING AIR STAGNANT AND MAKING FOG AND
STRATUS LIKELY EACH MORNING. MONDAY THROUGH TUESDAY, THE STORM
TRACK NORTH OF THE AREA JUST CLIPS ARE AREA ENOUGH TO BRING A
10% CHANCE OF PRECIPITATION FROM SHOWERS TO THE FAR NORTHERN
REACHES OF OUR CWA. THE HIGH PRESSURE AMPLIFIES TO A CLOSED HIGH
ON WEDNESDAY, THEN SHIFTS FROM NORTHERN CALIFORNIA TO THE
PACIFIC NORTHWEST COAST. THIS EVOLUTION OF THE HIGH WILL NOT
ONLY PUSH EXACERBATE DRY AND INVERTED CONDITIONS, BUT WILL ALSO
SET UP AN OMEGA BLOCK PATTERN HEADING INTO LATE NEXT WEEK.
AVIATION
MAINLY VFR WITH ISOLATED MVFR-IFR SNOW SHOWERS
LINGERING IN SW ID AND OVER HIGH TERRAIN. PATCHY FOG AND LOW
STRATUS IS POSSIBLE IN SHELTERED VALLEYS FRIDAY MORNING, THE
SAME TIME THAT SHOWERS DISSIPATE. MOUNTAINS OBSCURED IN
PRECIPITATION AND LOW CLOUDS. SURFACE WINDS: W-NW 10-20 KT WITH
GUSTS TO 30 KT EXCEPT NW 15-25 KT WITH GUSTS 30-40 KT IN MAGIC
VALLEY. WINDS ALOFT AT 10KFT MSL: N-NW 20-35 KT.
KBOI...VFR WITH LOWER CLOUDS NEAR THE FOOTHILLS. A 10% CHANCE OF
LIGHT SNOW SHOWERS THIS AFTERNOON, UNLIKELY TO DROP BELOW VFR.
SURFACE WINDS W-NW 10-15 KT WITH GUSTS TO 25 KT.
WEEKEND OUTLOOK...MOSTLY VFR WITH CLEAR SKIES ON SATURDAY AND
INCREASING CLOUDS ON SUNDAY. LOCALIZED LIFR-IFR CONDITIONS IN
PATCHY MORNING FOG IN SHELTERED VALLEYS ON SATURDAY. GENERALLY
VARIABLE SURFACE WINDS LESS THAN 10 KT.
BOI WATCHES/WARNINGS/ADVISORIES
ID...NONE.
OR...NONE.
WWW.WEATHER.GOV/BOISE
INTERACT WITH US VIA SOCIAL MEDIA:
WWW.FACEBOOK.COM/NWSBOISE
WWW.X.COM/NWSBOISE
SHORT TERM...KA
LONG TERM....JM
AVIATION.....JM
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