146
FXUS65 KBOI 161608
AFDBOI
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE BOISE ID
908 AM MST SUN FEB 16 2025
DISCUSSION
WARM-FRONTAL SNOW IN SOUTH-CENTRAL IDAHO SHOULD
EXIT EASTWARD BY NOON. A TRAILING WEAKER TROUGH WITH LIGHT SNOW
IN WESTERN IDAHO SHOULD ALSO MOVE EASTWARD AND OUT OF OUR CWA
BY 2PM. THE REST OF THE DAY SHOULD HAVE ONLY FLURRIES AND/OR
SPRINKLES BEFORE A COLD FRONT COMES IN TONIGHT WITH WIDESPREAD
PCPN. THE MAIN UPPER TROUGH WILL CONTINUE SNOW SHOWERS INTO
MONDAY, EXCEPT RAIN BELOW 4000 FEET. PCPN SHOULD TAPER OFF
MONDAY NIGHT BUT SNOW SHOWERS WILL CONTINUE IN NORTHERN
MOUNTAINS. NO UPDATES.
AVIATION
WIDESPREAD MVFR TO LIFR IN AREAS OF SNOW THIS
MORNING. SNOW WILL TRANSITION TO RAIN SHOWERS IN ELEVATIONS
BELOW 3K-4K FEET MSL THIS AFTERNOON. MOUNTAINS OBSCURED.
SURFACE WINDS: VARIABLE 10 KT OR LESS, BECOMING SE-SW 5-15 KT
WITH LOCAL GUSTS 20-25 KT THIS AFTERNOON. WINDS ALOFT AT 10KFT
MSL: W 25-40 KT.
KBOI...MVFR TO LIFR IN SNOW THIS MORNING. TRANSITION TO
RAIN/SNOW MIX OR ALL RAIN AFTER SUN/18Z AS TEMPERATURES RISE
ABOVE FREEZING. SURFACE WINDS: LIGHT AND VARIABLE, BECOMING SE
5-11 KT BY MON/06Z.
PREV DISCUSSION
SHORT TERM...TODAY THROUGH TUESDAY NIGHT...A WARM FRONT IS
MOVING INTO THE REGION THIS MORNING, WITH SNOW BECOMING
WIDESPREAD. SNOW WILL CHANGE TO RAIN IN LOWER ELEVATIONS AS
SNOW LEVELS RISE TO 3000 TO 4000 FEET MSL THIS AFTERNOON.
SNOW ACCUMULATIONS OF 6 TO 12 INCHES ACROSS THE MOUNTAINS,
2 TO 4 INCHES IN THE LOWER ELEVATIONS OF BAKER COUNTY, AND
1 TO 2 INCHES ACROSS HARNEY AND MALHEUR COUNTIES. THE SNAKE
BASIN, INCLUDING THE TREASURE VALLEY AND MAGIC VALLEY WILL
SEE UP TO AN INCH OF SNOW, MAINLY ON SUNDAY MORNING BEFORE
CHANGING OVER TO RAIN. AS THE COLD FRONT MOVES THROUGH,
SHOWERS INCREASE IN INTENSITY ON SUNDAY EVENING INTO MONDAY
MORNING. SNOW SHOWERS WILL CONTINUE INTO TUESDAY, AND MAINLY
BE FOCUSED OVER THE HIGHER TERRAIN.
LONG TERM...WEDNESDAY THROUGH SUNDAY...THE NEXT SYSTEM ARRIVES
ON WEDNESDAY MORNING AS A WARM FRONT MOVES THROUGH THE AREA.
THIS WILL BRING A SIMILAR SYSTEM AS THE ONE TODAY, WHERE
PRECIPITATION STARTS OFF AS SNOW IN THE MORNING, TRANSITIONING
TO RAIN BY WEDNESDAY AFTERNOON IN THE LOWER VALLEYS BELOW 4000'
TO 5000' MSL. THIS SYSTEM WILL BRING AN ADDITIONAL 4 TO 8
INCHES OF SNOW TO THE MOUNTAINS ABOVE 5000' MSL BY THURSDAY. AN
UPPER LEVEL RIDGE BEGINS TO BUILD INTO THE AREA ON THURSDAY AND
FRIDAY, AS AN ATMOSPHERIC RIVER IMPACTS WASHINGTON AND BRITISH
COLUMBIA, THIS WILL BRING A WARMING TREND TO SOUTHEAST OR AND
SOUTHWEST ID. TEMPERATURES MAY REACH LOW 50S BY SUNDAY IN
VALLEY LOCATIONS, WHICH WOULD BE A FEW DEGREES ABOVE NORMAL
AND MUCH WARMER THAN WE HAVE SEEN OVER THE PAST FEW WEEKS.
BOI WATCHES/WARNINGS/ADVISORIES
ID...WINTER WEATHER ADVISORY UNTIL 11 AM MST MONDAY IDZ011-033.
OR...NONE.
WWW.WEATHER.GOV/BOISE
INTERACT WITH US VIA SOCIAL MEDIA:
WWW.FACEBOOK.COM/NWSBOISE
WWW.X.COM/NWSBOISE
DISCUSSION...LC
AVIATION.....JB
SHORT TERM...KA
LONG TERM....KA
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