643
FXUS65 KBOI 022345
AFDBOI
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE BOISE ID
545 PM MDT SUN AUG 2 2026
UPDATE
UPDATED AVIATION DISCUSSION.
KEY MESSAGES
- GUSTY WINDS TONIGHT ESPECIALLY AGAIN ALONG THE I-84 CORRIDOR
FROM BAKER CITY TO ONTARIO.
- THE HEAT RETURNS BY MIDWEEK WITH 100 DEGREE TEMPERATURES
LIKELY AT LOWER ELEVATIONS.
- SMOKY CONDITIONS CONTINUE THROUGH THE WEEK.
SHORT TERM /THROUGH TUESDAY NIGHT/
ISSUED 238 PM MDT SUN AUG 2 2026
A REINFORCING SHORTWAVE TROUGH WILL SWING THROUGH THE PAC NW
OVERNIGHT, BRINGING ANOTHER WIND PUSH THROUGH SE OREGON AND THE
SNAKE PLAIN OF SW IDAHO. SIMILAR TO LAST NIGHT, THE STRONGEST
WIND GUSTS (30-45 MPH) WILL IMPACT THE I-84 CORRIDOR FROM BAKER
CITY TO ONTARIO, INCLUDING PORTIONS OF WASHINGTON, PAYETTE,
CANYON AND MALHEUR COUNTIES. OTHERWISE EXPECT GUSTS 25-35 MPH
ACROSS SE OREGON AND FURTHER UP THE SNAKE PLAIN. MONDAY WILL SEE
BREEZY CONDITIONS CONTINUE ACROSS OPEN TERRAIN WITH
TEMPERATURES (LOWS AND HIGHS) RUNNING ABOUT 10 DEGREES BELOW
NORMAL. WINDS WILL BE STRONGEST ACROSS THE SNAKE PLAIN EAST OF
BOISE WHERE GUSTS WILL REACH 20-30 MPH. WINDS WEAKEN AND
TEMPERATURES TREND WARMER ON TUESDAY AS AN UPPER RIDGE BUILDS
ALONG THE COAST. AREAS NEAR/DOWNWIND OF LARGE FIRES WILL
CONTINUE TO DEAL WITH THICKER SMOKE THROUGH MONDAY MORNING. COME
MONDAY AFTERNOON A SHIFT TO A MORE NORTHERLY FLOW ALOFT WILL
BRING SMOKE INTO THE AREA FROM THE LARGE FIRES IN WA.
LONG TERM /WEDNESDAY THROUGH SUNDAY/
ISSUED 238 PM MDT SUN AUG 2 2026
A RIDGE OF HIGH PRESSURE WILL REAMPLIFY OVER THE AREA STARTING
ON WEDNESDAY AND BRING WARMER CONDITIONS THROUGH THE WEEKEND.
TEMPERATURES WILL BE 5-10 DEGREES ABOVE NORMAL WITH LOWER
VALLEYS NEAR 100 DEGREES THURSDAY THROUGH SUNDAY. SMOKY
CONDITIONS WILL CONTINUE FROM AREA WILDFIRES. CONDITIONS WILL
REMAIN DRY AND BREEZY.
AVIATION /00Z MONDAY THROUGH TUESDAY/
ISSUED 534 PM MDT SUN AUG 2 2026
REDUCED VISIBILITY DUE TO WILDFIRE SMOKE, WITH AREAS OF
MVFR/IFR AND MOUNTAIN OBSCURATION. SURFACE WINDS: W-NW 10-20 KT
WITH GUSTS 15-25 KT, EXCEPT GUSTS 30-40 KT BETWEEN KBKE-KONO
THIS EVENING. THEN W-N 5-15 KT OVERNIGHT, WITH AREAS OF GUSTS TO
15-25 KT. WINDS ALOFT AT 10KFT MSL: W 15-30 KT BECOMING NW 5-15
KT AFTER MON/12Z.
KBOI...SMOKY, LOW VFR WITH MVFR AT TIMES THROUGH MONDAY. THEN,
SIGNIFICANT DEGRADATION (MFR-IFR LIKELY) EXPECTED MONDAY
EVENING. SURFACE WINDS: NW 5-15 KT. OCCASIONAL GUSTS AROUND 20
KT THROUGH THIS EVENING.
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.....SH
SHORT TERM...DG
LONG TERM....KA
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