254
FXUS65 KBOI 230624
AFDBOI
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE BOISE ID
1224 AM MDT TUE JUN 23 2026
UPDATE
UPDATED AVIATION DISCUSSION.
KEY MESSAGES
- GRADUALLY HOTTER AND DRIER THROUGH WEDNESDAY. ONLY SLIGHT
COOLING BUT STILL DRY THURSDAY.
- SLIGHT CHANCE OF AFTERNOON THUNDERSTORMS TUESDAY AND WEDNESDAY
SOUTH OF THE ID/NV BORDER, BUT OUTFLOW WINDS MAY REACH SOUTHERN
OWYHEE AND TWIN FALLS COUNTIES.
- MAJOR CHANGE BEGINNING FRIDAY WITH ARRIVAL OF A COLD FRONT AND
SHOWERS, FOLLOWED BY GUSTY WINDS, MORE SHOWERS AND CHANCE OF
THUNDERSTORMS THROUGH SUNDAY. SNOW POSSIBLE AS LOW AS 6500 TO
7000 FEET MSL SATURDAY NIGHT AND SUNDAY.
SHORT TERM /THROUGH THURSDAY NIGHT/
ISSUED 211 PM MDT MON JUN 22 2026
GENERALLY CLEAR AND GRADUALLY HOTTER THROUGH WEDNESDAY AS A
LOW-AMPLITUDE PACIFIC UPPER RIDGE COMES INLAND. SLIGHT CHANCE
OF AFTERNOON THUNDERSTORMS TUESDAY AND WEDNESDAY SOUTH OF THE
ID/NV BORDER, BUT OUTFLOW WINDS MAY REACH SOUTHERN OWYHEE AND
TWIN FALLS COUNTIES. LIGHT EAST WINDS TUESDAY, THEN LIGHT TO
MODERATE WEST OR NORTHWEST WINDS WEDNESDAY.
LONG TERM /FRIDAY THROUGH TUESDAY/
ISSUED 211 PM MDT MON JUN 22 2026
WARM AND DRY CONDITIONS WILL CONTINUE ON THURSDAY. A SHORTWAVE
TROUGH WILL DIG ACROSS OUR AREA EARLY THURSDAY. THIS PATTERN
WILL STEER SOME SUBTROPICAL MOISTURE INTO THE REGION, BRINGING
SCATTERED SHOWERS/THUNDERSTORMS OVER THE CENTRAL ID MOUNTAINS
AND NEAR THE NV BORDER THURSDAY AFTERNOON/EVENING. GUIDANCE
CONFIDENCE REMAINS STRONG ON A STRONG UPPER LOW DIGGING INTO
THE REGION FROM THE GULF OF ALASKA FRIDAY THROUGH THE WEEKEND.
THIS SYSTEM HAS POTENTIAL TO BRING SIGNIFICANT PRECIPITATION
FRIDAY AND OVER THE WEEKEND. A COLD FRONTAL PASSAGE IS EXPECTED
ON FRIDAY, BRINGING WIDESPREAD SHOWERS/THUNDERSTORMS IN THE
AFTERNOON/EVENING. SATURDAY AND SUNDAY WILL MAINLY SEE SHOWERS/
THUNDERSTORMS OVER HIGHER TERRAIN ON THE ID SIDE. OVERALL, THERE
REMAINS UNCERTAINTY OVER THE EXACT TRACK OF THIS APPROACHING LOW,
BUT THE WEEKEND THROUGH MONDAY WILL HAVE GOOD POTENTIAL FOR WETTING
RAINS AND TEMPERATURES COOLING DOWN TO 10 TO 20 DEGREES BELOW NORMAL.
SNOW IS POSSIBLE ABOVE 6500 FEET MSL NORTH AND 7000 FEET MSL SOUTH
SATURDAY NIGHT AND SUNDAY MORNING.
AVIATION /06Z TUESDAY THROUGH WEDNESDAY/
ISSUED 1224 AM MDT TUE JUN 23 2026
VFR AND PATCHY SMOKE. HIGH DENSITY ALTITUDE RETURNING TUE
AFTERNOON DUE TO HOT TEMPERATURES. SURFACE WINDS: VARIABLE UP TO
10 KT THROUGH MORNING, THEN NW-NE 5-15 KT TUE AFTERNOON. WINDS
ALOFT AT 10KFT MSL: W-NW 10-20 KT, THEN S-W 5-15 KT BY EARLY
TUE MORNING.
KBOI...VFR AND PATCHY SMOKE. HIGH DENSITY ALTITUDE RETURNING TUE
AFTERNOON DUE TO HOT TEMPERATURES. SURFACE WINDS: LIGHT SE OR
VARIABLE OVERNIGHT, THEN NW-N 5-15 KT TUE AFTERNOON.
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.....SH
SHORT TERM...LC
LONG TERM....JY
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page