038
FXUS65 KBOI 162110
AFDBOI
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE BOISE ID
210 PM MST SUN FEB 16 2025
SHORT TERM...TONIGHT THROUGH TUESDAY NIGHT
NORTH PACIFIC UPPER
LOW NEAR 50N/135W AT 18Z WILL OPEN TO A TROUGH AND MOVE INLAND
ACROSS OUR NORTHERN ZONES MONDAY THEN EXIT EAST OF OUR CWA TUESDAY
MORNING. SNOW AND LOW-ELEVATION RAIN WILL INCREASE TONIGHT, WITH
LIGHTER PCPN CONTINUING MONDAY, THEN DECREASING FURTHER MONDAY
NIGHT AS THE UPPER TROUGH WEAKENS. TOTAL LIQUID-EQUIVALENT PCPN
THROUGH MONDAY NIGHT SHOULD BE LESS THAN .25 INCH IN THE
VALLEYS, .25 TO .50 INCH IN THE MOUNTAINS, BUT UP TO 1.00 INCH
IN THE HIGHEST IDAHO MOUNTAINS NORTH OF THE SNAKE BASIN.
TOTAL SNOWFALL WILL BE MINIMAL IN THE VALLEYS, 1 TO 3 INCHES IN
SOUTHERN MOUNTAINS, 2 TO 6 INCHES IN NORTHERN MOUNTAINS, AND UP
TO 12 INCHES ON THE HIGHER IDAHO PEAKS NORTH OF THE SNAKE
BASIN. THESE AMOUNTS ARE NOT HIGH ENOUGH TO CONTINUE THE WINTER
WEATHER ADVISORY IN THE UPPER WEISER RIVER VALLEY AND WEST
CENTRAL IDAHO MOUNTAINS, AND THE ADVISORY WAS CANCELLED AT 2 PM
MST.
LONG TERM...WEDNESDAY THROUGH SUNDAY
THE NEXT UPSTREAM TROUGH
WILL MOVE INTO THE AREA ON WEDNESDAY BRINGING ANOTHER ROUND OF
PRECIPITATION TO SOUTHEASTERN OREGON AND SOUTHWESTERN IDAHO.
SNOW LEVELS WITH THE SYSTEM ON WEDNESDAY WILL START NEAR VALLEY
FLOORS, BUT WILL LIKELY RISE ENOUGH TO CAUSE A CHANGEOVER TO
RAIN IN MOST VALLEY LOCATIONS. A LOW AMPLITUDE UPPER LEVEL RIDGE
WILL BUILD IN BEHIND WEDNESDAY'S STORM WHICH WILL CAUSE THE
WEATHER TO TREND DRIER AND A LITTLE WARMER THAN IT HAS BEEN.
HOWEVER, A COUPLE OF WEAK SHORTWAVES WILL RIPPLE OVER THE TOP
OF THE RIDGE INCREASING THE CHANCE FOR PRECIPITATION AGAIN BY
SUNDAY, ESPECIALLY IN THE NORTHERN HALF OF THE FORECAST AREA,
INCLUDING BAKER COUNTY AND THE WEST CENTRAL AND BOISE MOUNTAINS
OF IDAHO.
AVIATION
SCATTERED RAIN AND SNOW SHOWERS WILL CONTINUE ACROSS
SOUTHWESTERN IDAHO AND SOUTHEASTERN OREGON THROUGH TONIGHT AND
WILL BE ASSOCIATED WITH MVFR IN VALLEYS AND IFR CEILINGS AND
VISIBILITIES IN THE MOUNTAINS. MOUNTAINS OBSCURED. SNOW LEVEL
AROUND 4000 FEET MSL. SURFACE WINDS: VARIABLE 10 KT OR LESS THIS
EVENING, BECOMING SW-W AT 10 TO 15 KT ON MONDAY. WINDS ALOFT AT
10KFT MSL: W 25-40 KT.
KBOI...MVFR CONDITIONS EXPECTED TO PREVAIL AT THE TERMINAL
THROUGH AT LEAST 06Z. SCATTERED RAIN SHOWERS WILL INCREASE IN
THE VICINITY OF THE TERMINAL AFTER 06Z, AND COULD BRIEFLY REDUCE
VISIBILITY AND LOWER CEILINGS. SHOWER ACTIVITY EXPECTED TO
DIMINISH AFTER 12Z WITH VFR CONDITIONS EXPECTED TO PREVAIL BY
MONDAY AFTERNOON.
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...LC
LONG TERM....JB
AVIATION.....JB
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