639
FXUS65 KBOI 272134
AFDBOI
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE BOISE ID
234 PM MST FRI FEB 27 2026
SHORT TERM...TONIGHT THROUGH SUNDAY NIGHT
HIGH CLOUDS WILL
CONTINUE TO HUG THE NV BORDER OVERNIGHT, WITH MOSTLY CLEAR SKIES
TO THE NORTH. AN UPPER LOW APPROACHING THE NORTHERN CA COAST WILL
PUSH CLOUDS FURTHER NORTH ON SATURDAY. LIGHT PRECIPITATION WILL
BREAK OUT ALONG A WARM FRONT LATE SATURDAY INTO SUNDAY. THE
FRONT WILL WEAKEN AS IT LIFTS NORTH RESULTING IN LIQUID TOTALS
LESS THAN 0.10 INCHES FOR MOST SPOTS FROM THE SNAKE PLAIN INTO
THE BOISE AND WEST-CENTRAL IDAHO MOUNTAINS. AREAS TO THE SOUTH
AND WEST WILL SEE HIGHER AMOUNTS WITH A RANGE OF 0.1-0.3 INCHES
THROUGH SUNDAY NIGHT. SNOW LEVELS WILL RISE TO BETWEEN 6-8KFT
MSL BY SUNDAY AFTERNOON. SNOW ACCUMULATION WILL BE LESS THAN AN
INCH AT ALL BUT THE HIGHEST ELEVATIONS IN THE STEENS. SOUTHERN
AREAS ALONG THE NV BORDER WILL SEE AN UPTICK IN THE CHANCE OF
THUNDERSTORMS SAT/SUN AFTERNOON. FOR NOW THE NBM KEEPS THE
THREAT AT LESS THAN 15%, THOUGH SOME HIGH RESOLUTION MODELS ARE
SHOWING SIGNS OF T-STORM DEVELOPMENT ACROSS SE OREGON SAT/SAT
NIGHT, SPREADING EASTWARD ALONG THE ID/NV BORDER ON SUNDAY.
TEMPERATURES WILL REMAIN 5-10 DEGREES ABOVE NORMAL THROUGH THE
WEEKEND.
LONG TERM...MONDAY THROUGH FRIDAY
PRECIPITATION CHANCES FROM
THE UPPER-LEVEL TROUGH WILL LINGER INTO MONDAY AS THE SYSTEM
MOVES FURTHER EAST INTO THE GREAT BASIN. SNOW LEVELS WILL REMAIN
HIGH WITH VALUES RANGING FROM 6000-7500 FEET MSL. BRIEF UPPER-
LEVEL RIDGING BUILDS IN TUESDAY BEFORE ANOTHER UPPER-LEVEL
TROUGH MOVES ACROSS THE PACIFIC NW. TEMPERATURES TUESDAY WILL BE
THE WARMEST OF THE PERIOD, WITH LOW 60S ACROSS PARTS THE SNAKE
BASIN. ENSEMBLES BRING A POTENT COLD FRONT THROUGH THE AREA ON
WEDNESDAY AFTERNOON, WITH SNOW LEVELS FALLING TO 3500-4500 FEET
MSL BY THURSDAY. SNOW SHOWERS CONTINUE OVER THE HIGHER TERRAIN
THURSDAY WITH THE COLD UNSTABLE AIR ALOFT. CONDITIONS DRY OUT ON
FRIDAY BETWEEN SYSTEMS. A RETURN TO COOL AND UNSETTLED BY THE
FOLLOWING WEEKEND.
AVIATION
VFR. SURFACE WINDS: W-NW 5-15 KT, STRONGEST NEAR
KTWF KJER WITH GUSTS NEAR 20 KT, BECOMING LIGHT AND VARIABLE
OVERNIGHT. WINDS ALOFT AT 10KFT MSL: W-NW 20-30 KT.
KBOI...VFR. NW 5-10 KT IN THE AFTERNOON, SE 5-10 KT AT NIGHT.
WEEKEND OUTLOOK...LOWERING CLOUDS SATURDAY AFTERNOON. SHOWERS
ARRIVING IN SE OREGON/SW IDAHO FROM NEVADA SATURDAY AFTERNOON,
BRINGING LOCAL MVFR CEILINGS AND MOUNTAIN OBSCURATION. SHOWERS
EXPANDING NORTHWARD SATURDAY NIGHT INTO SUNDAY. A 10% CHANCE OF
LIGHTNING NEAR NV BORDER SUNDAY. SNOW LEVELS 6-8KFT MSL. SURFACE
WINDS SAT/SUN: VARIABLE 5-10 KT.
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
SHORT TERM...DG
LONG TERM....CH
AVIATION.....CH
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