853
FXUS65 KBOI 250346
AFDBOI
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE BOISE ID
846 PM MST TUE FEB 24 2026
DISCUSSION
SHOWERS ARE SLOWLY TAPERING OFF OVER MOST OF THE
REGION THIS EVENING. AS OF 8:30 PM MST, 0.53 INCHES OF RAIN HAS
FALLEN AT THE BOISE AIRPORT, WITH DEADWOOD SUMMIT IN THE WEST
CENTRAL MOUNTAINS (ELEVATION OF 7000 FEET) REPORTING 8 INCHES OF
SNOW. SHOWERS WILL LINGER OVERNIGHT, WITH SNOW LEVELS DROPPING
FROM 7000 FEET MSL THIS EVENING TO 4000-5000 FEET MSL WEDNESDAY.
TEMPERATURES WILL REMAIN SLIGHTLY ABOVE NORMAL TONIGHT AND
TOMORROW, WITH COLDER OVERNIGHT LOWS BELOW FREEZING EXPECTED BY
THURSDAY MORNING. BREEZY WINDS WILL RETURN FOR RIDGETOPS AND THE
LOWER SNAKE PLAIN, WITH GUSTS UP TO 40 MPH NEAR TWIN FALLS-
JEROME TOMORROW AFTERNOON. THE FORECAST HAS BEEN UPDATED TO
INCREASE WIND SPEEDS AND GUSTS THROUGH TOMORROW AFTERNOON WITH
HIGHER CONFIDENCE IN INCREASED WINDS FROM RECENT HI-RES MODEL
RUNS.
AVIATION
WIDESPREAD PRECIPITATION WILL CONTINUE TO MOVE AND EXIT
TO THE EAST THROUGH THE EVENING. SCATTERED SHOWERS WILL PERSIST
ACROSS THE AREA THROUGH TUESDAY. MVFR/LIFR CEILINGS WILL LIFT TO VFR
BY WED/AM. SNOW LEVELS: 6-8KFT MSL, LOWERING TO 3-8KFT MSL BY
WED/PM. SURFACE WINDS: SW-SE 5-15 KT, BECOMING W-NW 5-15 KT WED/AM
EXCEPT 10-20 KT WITH GUSTS TO 20-30 KT NEAR THE W-MAGIC VALLEY
& KBNO. WINDS ALOFT AT 10KFT MSL: W 30-45 KT.
KBOI...VFR. CEILINGS CONTINUING TO LIFT OVERNIGHT. SCATTERED SHOWERS
COULD IMPACT TERMINAL (30% CHANCE) OVERNIGHT INTO TUE/AM. VFR
CONDITIONS EXPECTED. SURFACE WINDS: SE 5-10 KT, BECOMING NW 5-15 KT
BY WED/18Z.
PREV DISCUSSION
SHORT TERM...TONIGHT THROUGH THURSDAY NIGHT...RAIN AND HIGH-
LEVEL SNOW CONTINUE TO STREAM ACROSS OUR CWA BUT A COLD FRONT
FROM THE NORTHWEST WILL CARRY MOST OF IT EASTWARD OUT OF OUR
CWA OVERNIGHT THROUGH WEDNESDAY MORNING. LIGHT RAIN AND
MOUNTAIN SNOW WILL DECREASE WEDNESDAY THEN END IN ALL AREAS
WEDNESDAY NIGHT. SNOW LEVELS WILL HIGHEST THIS EVENING, RANGING
FROM 6000 FEET FAR NORTH TO 8000 FEET ALONG THE NV BORDER -
JUST BEFORE THE COLD FRONT COMES IN, THEN LOWER OVERNIGHT
THROUGH WEDNESDAY. BY LATE WEDNESDAY AFTERNOON SNOW LEVELS WILL
RANGE FROM 3500 FEET NORTH TO 6000 FEET NEAR THE NEVADA BORDER.
STORM TOTAL QPF AND SNOWFALL THROUGH MIDDAY WEDNESDAY HAVE
CHANGED LITTLE FROM PREVIOUS FORECAST. THE MAIN STORY WEDNESDAY
WILL BE POST-FRONTAL WEST WINDS IN SOUTHERN IDAHO. SPEEDS WILL
INCREASE TO NEAR ADVISORY LEVELS IN SOUTH- CENTRAL IDAHO MIDDAY
WEDNESDAY, BUT STRONGER IN EASTERN IDAHO. WE HAVE DECIDED TO NOT
ISSUE A WIND ADVISORY FOR OUR CWA. WINDS WILL DECREASE WEDNESDAY
EVENING AND CLOUDS WILL DECREASE LATER WEDNESDAY NIGHT ALLOWING
TEMPERATURES TO FINALLY COOL TO NORMAL FOR LATE FEBRUARY. PATCHY
FOG WILL FORM IN THE VALLEYS EARLY THURSDAY MORNING.
LONG TERM...FRIDAY THROUGH TUESDAY...NORTHWEST FLOW ALOFT
ASSOCIATED WITH AN UPPER-LEVEL RIDGE AXIS JUST OFFSHORE OF THE
WESTERN CONUS WILL CREATE DRY AND CLEAR CONDITIONS FRIDAY.
BREAKDOWN OF THIS RIDGE OCCURS LATE FRIDAY INTO SATURDAY WITH
THE INTRUSION OF AN UPPER-LEVEL LOW EMBEDDED IN THE FLOW MOVING
INTO THE CA/OR REGION. THIS WILL CAUSE FLOW ALOFT TO SHIFT TO
WESTERLY/SOUTHWESTERLY AHEAD OF THE LOW, SLINGING SOME MOISTURE
INTO THE REGION. POPS BEGIN TO INCREASE MIDDAY SATURDAY AND
STAY POPULATED UNTIL LATE MONDAY AS THE UPPER-LEVEL LOW MOVES
SOUTH/SOUTHEAST FROM NORTHERN CALIFORNIA. GREATEST CHANCE OF
PRECIP ARE SATURDAY EVENING TO SUNDAY MORNING AT 30-50%. SNOW
LEVELS WILL RANGE FROM 5000-7000 FT MSL, BUT PRECIPITATION
AMOUNTS WILL BE LIGHT. ANOTHER UPPER-LEVEL RIDGE BUILDS IN AS
THE LOW MOVES OUT. ABOVE NORMAL TEMPERATURES WILL PERSIST
THROUGH THE PATTERN, WITH VALLEYS REACHING THE LOW TO MID
60S ON TUESDAY AND WEDNESDAY, OR AROUND 10 DEGREES ABOVE NORMAL.
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
DISCUSSION...SA
AVIATION.....NF
SHORT TERM...LC
LONG TERM....CH
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