428
FXUS65 KBOI 021201
AFDBOI
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE BOISE ID
601 AM MDT SUN AUG 2 2026
UPDATE
UPDATED AVIATION DISCUSSION.
KEY MESSAGES
- BREEZY WINDS CONTINUE INTO MONDAY, ESPECIALLY THROUGH THE
SNAKE PLAIN, AND ONTARIO TO BAKER CITY.
- NOT AS HOT SUNDAY THROUGH TUESDAY. THE HEAT RETURNS BY
MIDWEEK WITH TEMPERATURES BACK ABOVE NORMAL.
SHORT TERM /THROUGH TUESDAY NIGHT/
ISSUED 333 AM MDT SUN AUG 2 2026
SOUTHWESTERLY FLOW ALOFT WILL REMAIN TODAY AS THE UPPER-LEVEL
TROUGH THAT BROUGHT THE COLD FRONT MOVES EAST IN THE SOUTHERN
CANADIAN PROVINCES. MONDAY AND TUESDAY, RIDGING WILL BEGIN
BUILDING OVER THE PACIFIC NW COAST AND SLOWLY MOVING EAST
TOWARDS THE AREA. WINDS WILL REMAIN GUSTY THROUGH THIS MORNING
(25-35 MPH) ACROSS NORTHERN MALHEUR / SOUTHEASTERN BAKER
COUNTIES, EASTWARD THROUGH THE SNAKE PLAIN. THIS AFTERNOON, WIND
GUSTS OF 25 TO 35 MPH ARE FORECAST ACROSS OPEN AND ELEVATED
TERRAIN OF SE OREGON AND THE SNAKE PLAIN OF IDAHO. MONDAY WILL
SEE BREEZY BUT LIGHTER WINDS WITH GUSTS REMAINING UNDER 30 MPH.
SUNDAY AND MONDAY WILL BE COOLER THAN THE PREVIOUS FEW DAYS,
WITH HIGH TEMPERATURES AROUND 10 DEGREES BELOW NORMAL (LOW-MID
80S FOR THE VALLEYS). THE MORNINGS WILL BE COOL AS WELL, WITH
LOWS IN THE LOW-TO-MID 50S IN THE VALLEYS MONDAY AND TUESDAY
MORNINGS. STARTING TUESDAY, AFTERNOON HIGH TEMPERATURES WILL
BEGIN TO RISE AGAIN AS THE UPPER-LEVEL RIDGE BUILDS IN.
WIDESPREAD WILDFIRE SMOKE CONCENTRATIONS ARE EXPECTED TO REMAIN
LOWER TODAY WITH THE INCREASED WIND SPEEDS, HOWEVER INCREASED
FIRE ACTIVITY HAS BEEN SEEN OVERNIGHT POST-DRY COLD FRONT. SMOKE
IS EXPECTED TO INCREASE IN COVERAGE AND INTENSITY AGAIN MONDAY
ONWARDS AS WINDS DECREASE.
LONG TERM /WEDNESDAY THROUGH SUNDAY/
ISSUED 333 AM MDT SUN AUG 2 2026
HOT AND DRY CONDITIONS ARE FORECAST TO CONTINUE DEVELOPING AS
THE DESERT SOUTHWEST RIDGE BUILDS NORTHWARD OVER THE AREA. THIS
WILL BRING A RETURN TO ABOVE NORMAL TEMPERATURES STARTING
WEDNESDAY AND CONTINUING THROUGH THE WEEKEND. WITHOUT SMOKE,
THIS WILL PUT LOWER ELEVATIONS IN THE MID-UPPER 90S, HOWEVER
WEST- NORTHWEST FLOW ALOFT AND LIGHT WINDS NEAR THE SURFACE
WOULD BE FAVORABLE FOR SMOKE TO COLLECT FROM NEARBY FIRES.
SIMILAR TO THIS LAST WEEK, THE TRADEOFF FOR NOT QUITE AS HOT IN
THE EXTENDED PERIOD WILL BE DUE TO GREATER SMOKE
COVERAGE/DENSITY.
AVIATION /12Z SUNDAY THROUGH MONDAY/
ISSUED 553 AM MDT SUN AUG 2 2026
SOME IMPROVEMENT IN SURFACE VISIBILITY DUE TO INCREASED WIND
SPEEDS, BUT AREAS OF LOW VFR/MVFR WILL CONTINUE AS PNW WILDFIRES
REMAIN ACTIVE. SURFACE WINDS: W-NW 10-20 KT WITH GUSTS 20-25
KT. WINDS ALOFT AT 10KFT MSL: SW 15-30 KT.
KBOI...PERIODS OF LOW-VFR SURFACE VISIBILITY DUE TO WILDFIRE SMOKE.
SURFACE WINDS: NW 5-15 KT. GUSTS TO 20-25 KT IN THE AFTERNOON.
BOI WATCHES/WARNINGS/ADVISORIES
ID...AIR QUALITY ALERT UNTIL 2 PM MDT MONDAY FOR IDZ011-012-014-015-
029-033.
OR...AIR QUALITY ALERT UNTIL 3 PM MDT /2 PM PDT/ MONDAY FOR
ORZ061>064.
WWW.WEATHER.GOV/BOISE
INTERACT WITH US VIA SOCIAL MEDIA:
WWW.FACEBOOK.COM/NWSBOISE
WWW.X.COM/NWSBOISE
AVIATION.....CH
SHORT TERM...CH
LONG TERM....CH
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