380
FXUS65 KBOI 110709
AFDBOI
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE BOISE ID
109 AM MDT THU JUN 11 2026
UPDATE
UPDATED AVIATION DISCUSSION.
KEY MESSAGES
- COLD LOW TEMPERATURES AT OR NEAR FREEZING IN MOUNTAIN VALLEYS
TOMORROW MORNING.
- WEST/NORTHWEST WINDS 20 TO 30 MPH WITH GUSTS UP TO 45 MPH IN
SOUTH-CENTRAL IDAHO THIS AFTERNOON AND EARLY EVENING.
- ISOLATED SHOWERS AND THUNDERSTORMS IN NORTHERN BAKER COUNTY,
OR AND THE WEST CENTRAL MOUNTAINS THIS AFTERNOON.
- DRY AND GRADUALLY WARMER THROUGH THE END OF THIS WEEK.
SHORT TERM /THROUGH SATURDAY NIGHT/
ISSUED 212 PM MDT WED JUN 10 2026
A FEW SHOWERS ARE LINGERING OVER HIGH TERRAIN IN CENTRAL IDAHO
THIS AFTERNOON, WITH A WEAK THUNDERSTORM NEAR RIGGINS, ID
PUSHING EAST. THE TROUGH THAT BROUGHT THIS PUSH OF PRECIPITATION
WILL CONTINUE TO MOVE EAST LATER TODAY, KEEPING WINDS GUSTY
OVER THE SNAKE RIVER PLAIN AND CONTINUING ISOLATED HIGH TERRAIN
SHOWERS THROUGH THE EARLY EVENING. THIS 10-20% CHANCE OF
SHOWERS AND THUNDERSTORMS EXISTS OVER NORTHEASTERN OREGON AND
CENTRAL IDAHO, PRIMARILY NORTHEAST OF BAKER CITY, OR AND NORTH OF
MCCALL, ID. THE COOLEST TEMPERATURES OF THE WEEK WILL OCCUR
TODAY, WITH HIGHS GENERALLY IN THE MID TO HIGH 60S AT LOWER
ELEVATIONS. BREEZY NORTHWEST WINDS ACROSS THE REGION WILL
CONTINUE THROUGH THE EVENING, TAPERING OFF AFTER SUNSET. THE
STRONGEST WINDS WILL BE IN THE MAGIC VALLEY AND ON HIGH TERRAIN
EAST OF MOUNTAIN HOME, ID WITH OCCASIONAL GUSTS UP TO 45 MPH. A
RIDGE OF HIGH PRESSURE WILL THEN BUILD IN OVER THE WEST COAST,
BRINGING A STEADY WARMING AND DRYING TREND TO THE REGION THROUGH
FRIDAY. WINDS WILL GENERALLY BE LIGHT AND TERRAIN DRIVEN
THROUGH FRIDAY MORNING, WITH BREEZY NORTHERLY WINDS EXPECTED ON
FRIDAY EVENING AS A SHORTWAVE TROUGH MOVES INTO NORTHERN IDAHO-
MONTANA.
LONG TERM /SUNDAY THROUGH THURSDAY/
ISSUED 212 PM MDT WED JUN 10 2026
A SHARP UPPER RIDGE ALONG THE WEST COAST WILL GRADUALLY SHIFT
TO THE INTERIOR WEST NEXT WEEK. THIS WILL RESULT IN DRY AND
WARMING WEATHER WITH TEMPERATURES REACHING 10-15 DEGREES ABOVE
NORMAL BY TUESDAY. THE CURRENT FORECAST HAS BUMPED HOTTER
LOCATIONS INTO MID-UPPER 90S WHICH CONTINUES TO BE ON THE HIGH
END OF THE TEMPERATURE/THICKNESS ENVELOPE OF THE OPERATIONAL AND
AI MODELS. FOR NOW LONG RANGE ENSEMBLE MEAN (HREF) IS SHOWING A
20-50% CHANCE OF REACHING 95 DEGREES NEXT TUE/WED IN THE SNAKE
PLAIN BETWEEN ONTARIO AND HAGERMAN. THOUGH EARLY, THERE IS MODEL
AGREEMENT THAT A COOLER TROUGH RETURNS TO THE PAC NW LATE NEXT
WEEK.
AVIATION /06Z THURSDAY THROUGH FRIDAY/
ISSUED 109 AM MDT THU JUN 11 2026
VFR. PATCHY IFR DUE TO FOG IN CENTRAL ID VALLEYS UNTIL 15Z,
OTHERWISE CLEAR. SURFACE WINDS...LIGHT DIURNAL LESS THAN 10 KT.
WINDS ALOFT AT 10 KFT MSL. NORTHWEST 5-10 KT.
KBOI...VFR. CLEAR SKIES. VARIABLE WIND LESS THAN 8 KT.
WEEKEND OUTLOOK...VFR. GENERALLY CLEAR SKIES. LIGHT SURFACE
WIND.
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
AVIATION.....CH
SHORT TERM...SA
LONG TERM....DG
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