236
FXUS65 KBOI 162339
AFDBOI
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE BOISE ID
539 PM MDT FRI OCT 16 2026
UPDATE
UPDATED AVIATION DISCUSSION.
KEY MESSAGES
- WARM AND DRY CONDITIONS THROUGH THE WEEKEND, WITH HIGH
TEMPERATURES 5 TO 10 DEGREES ABOVE NORMAL.
- ACTIVE PATTERN RETURNING COOLER CONDITIONS AND PRECIPITATION
CHANCES WEDNESDAY THROUGH FRIDAY.
SHORT TERM /THROUGH SUNDAY NIGHT/
ISSUED 213 PM MDT FRI OCT 16 2026
A HIGH AMPLITUDE UPPER RIDGE CURRENTLY COVERING THE PAC NW WILL
GIVE WAY TO SHORTWAVE ENERGY THAT WILL PUSH INTO BC, CANADA
THIS WEEKEND. SATURDAY IS THE WARMEST DAY WITH TEMPERATURES
AROUND 10 DEGREES ABOVE NORMAL, OR SOLIDLY IN THE 70S ACROSS
LOWER ELEVATIONS. SUNDAY BRINGS SEVERAL DEGREES OF COOLING
IN RESPONSE TO THE PASSING UPPER TROUGH. BREEZY SOUTH TO EAST
WINDS WILL FADE ON SUNDAY IN RESPONSE A WEAKENING SURFACE HIGH
ALONG THE CONTINENTAL DIVIDE AND DECREASE IN THE FLOW ALOFT.
LONG TERM /MONDAY THROUGH FRIDAY/
ISSUED 213 PM MDT FRI OCT 16 2026
THROUGH THE WEEK, A HIGH AMPLITUDE TROUGH WILL BECOME A CUT OFF
LOW IN SOUTHERN CALIFORNIA AND LINGER IN THE GREAT BASIN. AS
THE TROUGH BUILDS ALONG THE WEST COAST MONDAY EVENING,
INCREASING CLOUDS AND BREEZY CONDITIONS IN SE OREGON ARE
EXPECTED. RESIDUAL DRY CONDITIONS WITH THE WIND WILL SUPPORT
ELEVATED FIRE WEATHER, THOUGH IMPACTS WILL BE MINIMAL AS THE LOW
CONTINUES TO MOVE IN. TEMPERATURES WILL COOL OFF TUESDAY AS A
FRONT MOVES THROUGH, COOLING TEMPERATURES DOWN TO NEAR-NORMAL;
LOW-MID 60S FOR THE AFTERNOON HIGH IN LOWER ELEVATIONS, LOW 50S
FOR MOUNTAIN VALLEYS. ENSEMBLE GUIDANCE LARGELY FAVORS ANOTHER
COLD FRONT ON THURSDAY AS THE LOW MOVES WEAKENS AND REJOINS THE
BROADER FLOW. THIS WILL LEAD TO EVEN COLD TEMPERATURES, ABOUT 5
DEGREES BELOW NORMAL, THURSDAY AND FRIDAY. COLDER TEMPS ARE
ACCOMPANIED BY THE BEST CHANCES FOR PRECIPITATION ACROSS MUCH OF
THE AREA, WITH VALLEY RAIN AND MOUNTAIN SNOW POSSIBLE.
AVIATION /00Z SATURDAY THROUGH SUNDAY/
ISSUED 532 PM MDT FRI OCT 16 2026
VFR WITH PASSING HIGH CLOUDS. SMOKE FROM PRESCRIBED BURNS WILL
LOCALLY REDUCE VISIBILITY. LOCAL LLWS WILL DEVELOP OVERNIGHT
NEAR THE TOP OF THE INVERSION IN THE LOWER SNAKE PLAIN. SURFACE
WINDS: E-S 5-15 KT THROUGH SAT/AM, THEN SE-SW SAT/PM. WINDS
ALOFT AT 10KFT MSL: SW 10-25 KT.
KBOI...VFR WITH E-S 5-15 KT SURFACE WINDS THROUGH SATURDAY.
SUNDAY OUTLOOK...VFR CONDITIONS, WITH PERIODS OF HIGH CLOUD
COVER. SURFACE WINDS BECOME VARIABLE 5-12 KT SUNDAY. WINDS
ALOFT WILL REMAIN OUT OF THE SW.
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...DG
LONG TERM....JM
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