368
FXUS65 KBOI 240807
AFDBOI
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE BOISE ID
207 AM MDT FRI JUL 24 2026
KEY MESSAGES
- VERY HOT, DRY, AND BREEZY TO END THE WEEK.
- AREAS OF SMOKE WILL CONTINUE THROUGH THE WEEKEND, MAINLY IN
THE MORNING AND OVERNIGHT HOURS.
- CRITICAL FIRE WEATHER CONDITIONS, MAINLY OVER SOUTHEAST OR AND
HIGH TERRAIN OF SOUTHWEST ID, THROUGH SATURDAY EVENING.
SHORT TERM /THROUGH SUNDAY NIGHT/
A WARMING AND DRYING TREND WILL START TODAY, WITH TEMPERATURES
CLIMBING TO OVER 100 DEGREES THROUGHOUT MUCH OF THE LOWER SNAKE
PLAIN. AS SUCH, A HEAT ADVISORY WILL CONTINUE THROUGH SATURDAY
EVENING. LINGERING MONSOONAL MOISTURE WILL FAVOR ISOLATED
THUNDERSTORMS OVER THE MAGIC VALLEY IN THE AFTERNOON TODAY, AND
AGAIN SATURDAY AFTERNOON. AN UPPER LOW STEERING INTO THE
PACIFIC NORTHWEST COAST WILL BRING ELEVATED SOUTHWESTERLY WINDS
THROUGH THE WEEKEND, WHILE KEEPING OUR AREA ON THE DRY SIDE.
HOT, DRY, AND WINDY CONDITIONS WILL PERSIST THROUGH SATURDAY
ACROSS EASTERN OREGON AND HIGHER TERRAIN OF SOUTHWEST IDAHO,
LEADING TO CRITICAL FIRE WEATHER CONDITIONS THIS AFTERNOON
THROUGH SATURDAY EVENING. SUNDAY WILL SEE DRY CONDITIONS ACROSS
ALL AREAS, AND SLIGHTLY LOWER TEMPERATURES HOVERING IN THE MID
90S FOR THE SNAKE PLAIN. SUNDAY WILL ALSO SEE LOWERED WIND GUSTS
ACROSS ALL AREAS. WILDFIRE SMOKE WILL LINGER OVER THE AREA,
MOST NOTABLY EACH NIGHT AND MORNING BEFORE MIXING OUT DURING THE
AFTERNOONS FROM THE ELEVATED SOUTHWEST WINDS.
LONG TERM /MONDAY THROUGH FRIDAY/
COME MONDAY, THE UPPER TROUGH OVER THE NORTHWEST COAST WILL
KEEP OUR AREA UNDER A SOUTHWESTERLY FLOW ON THE DRY SIDE.
TUESDAY THROUGH THE END OF THE WEEK WILL GENERALLY SEE THE
RETURN OF HOTTER CONDITIONS, AS THE STRONG HIGH PRESSURE RIDGE
OFF THE GREAT BASIN BUILDS BACK IN OVER THE ENTIRE WESTERN
CONUS. THIS RIDGING PATTERN WILL STILL ALLOW SOME MONSOONAL
MOISTURE TO REACH SOUTH-CENTRAL IDAHO AROUND MIDWEEK, FAVORING A
SLIGHT CHANCE OF AFTERNOON THUNDERSTORMS MAINLY NEAR THE MAGIC
VALLEY AND THE IDAHO-NEVADA BORDER. OTHERWISE, AREAS WILL
GENERALLY BE WARM, DRY, AND BREEZY THROUGHOUT THE EXTENDED
FORECAST.
AVIATION /06Z FRIDAY THROUGH SATURDAY/
ISSUED 1058 PM MDT THU JUL 23 2026
HAZY CONDITIONS OVERNIGHT CONTINUE AS SMOKE SETTLES BACK IN. HIGH
DENSITY ALTITUDE DUE TO HEAT TOMORROW AFTERNOON. ISOLATED STORMS
WILL DEVELOP THIS AFTERNOON IN THE MAGIC VALLEY, CAPABLE OF
PRODUCING GUSTY WINDS, LIGHTNING, AND SMALL HAIL. SURFACE WINDS:
BECOMING LIGHT AND VARIABLE OVERNIGHT, SW-NW 5-15 KT WITH GUSTS
UP TO 25 KT DEVELOP FRIDAY AFTERNOON. WINDS ALOFT AT 10KFT MSL:
S-SW 10-25 KT.
KBOI...VFR. CLEAR OVERNIGHT OUTSIDE OF SETTLING SMOKE BRINGING HAZY
CONDITIONS TOMORROW. SURFACE WINDS: VARIABLE LESS THAN 10 KT
BECOMING SE TONIGHT.
WEEKEND OUTLOOK...AREAS OF WILDFIRE SMOKE CONTINUING WITH MVFR
VISIBILITY DURING LATE NIGHT AND MORNING HOURS, IMPROVING EACH
AFTERNOON. HIGH DENSITY ALTITUDE DUE TO HEAT. ISOLATED SHOWERS AND
THUNDERSTORMS ACROSS THE MAGIC VALLEY EACH AFTERNOON. MOSTLY CLEAR
ELSEWHERE. SURFACE WINDS: SW-NW 5-15 KT WITH GUSTS TO 25 KT, EXCEPT
10-20 KT WITH GUSTS TO 30 KT ON SATURDAY.
BOI WATCHES/WARNINGS/ADVISORIES
ID...AIR QUALITY ALERT UNTIL 2 PM MDT THIS AFTERNOON FOR IDZ011-012-
014-033.
RED FLAG WARNING FROM 2 PM THIS AFTERNOON TO 9 PM MDT SATURDAY
FOR IDZ401-402-423.
HEAT ADVISORY UNTIL 9 PM MDT SATURDAY FOR IDZ012-014-016-033.
OR...AIR QUALITY ALERT UNTIL 2 PM MDT /1 PM PDT/ THIS AFTERNOON FOR
ORZ061>064.
RED FLAG WARNING FROM 2 PM MDT /1 PM PDT/ THIS AFTERNOON TO 9
PM MDT /8 PM PDT/ SATURDAY FOR ORZ670>675.
HEAT ADVISORY UNTIL 9 PM MDT /8 PM PDT/ SATURDAY FOR ORZ063-
064.
WWW.WEATHER.GOV/BOISE
INTERACT WITH US VIA SOCIAL MEDIA:
WWW.FACEBOOK.COM/NWSBOISE
WWW.X.COM/NWSBOISE
SHORT TERM...JY
LONG TERM....JY
AVIATION.....JM
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