894
FXUS65 KBOI 221229
AFDBOI
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE BOISE ID
629 AM MDT MON JUN 22 2026
UPDATE
UPDATED AVIATION DISCUSSION.
KEY MESSAGES
- TEMPERATURES WARMING TO AROUND 10 DEGREES ABOVE NORMAL TUESDAY
THROUGH THURSDAY.
- BREEZY AFTERNOONS OVER THE NEXT SEVERAL DAYS.
- SLIGHT CHANCE OF THUNDERSTORMS TUESDAY AND WEDNESDAY IN
EASTERN OR AND ALONG THE NV BORDER.
- COOLER AND UNSETTLED NEXT WEEKEND, WITH NOTABLE PRECIPITATION
POSSIBLE.
SHORT TERM /THROUGH WEDNESDAY NIGHT/
ISSUED 359 AM MDT MON JUN 22 2026
AN UPPER LEVEL TROUGH WILL REMAIN OVER ALBERTA OVER THE NEXT
DAY WITH WEST-NORTHWEST FLOW. BREEZY WEST-NORTHWEST WINDS THIS
AFTERNOON. THE SYSTEM OVER ALBERTA WILL SLOWLY MOVE EAST AND
UPPER LEVEL RIDGING WILL BRING WARMER TEMPERATURES BY TUESDAY
WITH TEMPERATURES WARMING TO AROUND 10 DEGREES ABOVE NORMAL.
SUBTROPICAL MOISTURE WILL BEGIN TO GET INJECTED INTO THE UPPER
LEVEL RIDGE. A SLIGHT CHANCE OF THUNDERSTORMS IN EASTERN OR AND
ALONG THE NV BORDER ON TUESDAY AFTERNOON, WITH INCREASED CLOUDS
DURING THE AFTERNOON. A WEAK SHORTWAVE WILL MOVE OVER THE AREA
ON WEDNESDAY BRINGING INCREASED CLOUDS AND A SLIGHT CHANCE OF
THUNDERSTORMS OVER EASTERN OR DURING THE AFTERNOON.
LONG TERM /THURSDAY THROUGH MONDAY/
ISSUED 359 AM MDT MON JUN 22 2026
DRY AND WARM CONDITIONS CONTINUE INTO THURSDAY, WITH SUBTROPICAL
MOISTURE REMAINING SOUTH AND EAST OF THE AREA. SOME SHOWERS AND
THUNDERSTORMS MAY FORM IN THE CENTRAL ID MOUNTAINS AND SOUTH
ALONG THE NV BORDER THURSDAY AFTERNOON. AN UPPER LEVEL TROUGH
FROM THE GULF OF ALASKA WILL MOVE SOUTHEAST INTO THE PACIFIC NW
LATE THURSDAY. A COLD FRONT MOVES THROUGH SOUTHEAST OR AND
SOUTHWEST ID ON FRIDAY WITH COOLER AND UNSETTLED CONDITIONS
THROUGH SATURDAY AND SUNDAY. SIGNIFICANT PRECIPITATION POSSIBLE
WITH THIS SYSTEM IF THE TROUGH MOVES OVERHEAD. STILL
SIGNIFICANT MODEL DIFFERENCES THOUGH IN THE POSITIONING OF THIS
TROUGH, BUT WETTING RAINS POSSIBLE NEXT WEEKEND AND MUCH COOLER
TEMPERATURES AS MUCH AS 10-20 DEGREES BELOW NORMAL.
AVIATION /12Z MONDAY THROUGH TUESDAY/
ISSUED 628 AM MDT MON JUN 22 2026
VFR. SURFACE WINDS: VARIABLE 10 KT THIS MORNING, BECOMING N-NW
5-15 KT DURING THE AFTERNOON. WINDS ALOFT AT 10KFT MSL: W 10-20
KT.
KBOI...VFR. SURFACE WINDS: VARIABLE LESS THAN 6 KT BECOMING NW
5-15KT DURING THE AFTERNOON.
BOI WATCHES/WARNINGS/ADVISORIES
ID...OR...NONE.
WWW.WEATHER.GOV/BOISE
INTERACT WITH US VIA SOCIAL MEDIA:
WWW.FACEBOOK.COM/NWSBOISE
WWW.X.COM/NWSBOISE
AVIATION.....KA
SHORT TERM...KA
LONG TERM....KA
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