391
FXUS65 KBOI 012033
AFDBOI
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE BOISE ID
233 PM MDT TUE APR 1 2025
SHORT TERM...TONIGHT THROUGH THURSDAY NIGHT
AN UPPER TROUGH
OVER THE PAC NW WILL KEEP UNSETTLED WEATHER OVER THE REGION
THROUGH THURSDAY. WHILE THE MAIN LOW AND ACCOMPANYING DYNAMICS
WILL TRACK ACROSS THE GREAT BASIN, DAYTIME INSTABILITY WILL
SUPPORT SCATTERED SHOWERS THROUGH THURSDAY. MARGINAL CONVECTIVE
PARAMETERS INDICATE A LOW CHANCE OF THUNDERSTORMS (~20%) EACH
AFTERNOON/EVENING ACROSS SW IDAHO. NORTHWEST FLOW WILL MIX DOWN
TO THE SURFACE DURING THE DAY RESULTING IN BREEZY WINDS AND
GUSTS OF 20 TO 30 MPH OUTSIDE OF SHELTERED VALLEYS. SNOW
LEVELS HOLD STEADY BETWEEN 3500-4500FT MSL. OVERALL
ACCUMULATIONS WILL BE LIGHT, THOUGH HEAVIER SHOWERS COULD BRING
1-3"/HR RATES RESULTING IN LOCALLY HIGHER AMOUNTS IN THE
MOUNTAINS. TEMPERATURES WILL REMAIN 5-10 DEGREES BELOW NORMAL
THROUGH THURSDAY.
LONG TERM...FRIDAY THROUGH TUESDAY
THE MEANDERING UPPER LEVEL
TROUGH THAT HAS BROUGHT COOL AND UNSETTLED WEATHER THIS WEEK
WILL BEGIN TO MOVE EAST ON FRIDAY. LINGERING MOUNTAIN SNOW
SHOWERS AND VALLEY RAIN SHOWERS WILL CONTINUE THROUGH THE DAY ON
FRIDAY, WITH MINIMAL SNOW ACCUMULATIONS ABOVE ABOUT 4000-5000
FEET. A SLOW WARMING TREND WILL THEN TAKE HOLD THROUGH THE
WEEKEND AS A DEEP UPPER LEVEL RIDGE BUILDS ON SATURDAY.
TEMPERATURES WILL HIT THE LOW 60S-70S IN THE VALLEYS, WITH HIGHS
IN THE TREASURE VALLEY RETURNING TO THE LOW 70S ON SUNDAY!
DRY CONDITIONS WILL CONTINUE THROUGH THE WEEKEND, WITH ANOTHER
SHORTWAVE TROUGH LOOKING TO MOVE IN LATE MONDAY. THIS WILL COOL
TEMPERATURES SLIGHTLY AND BRING SHOWERS AND THUNDERSTORMS BACK
FOR MONDAY AFTERNOON-TUESDAY. LONG RANGE MODELS AND CPC 8-14 DAY
OUTLOOKS ARE HINTING AT A QUICK RETURN TO RIDGING BY TUESDAY
EVENING WITH ABOVE NORMAL TEMPERATURES AND BELOW NORMAL
PRECIPITATION THROUGH THE END OF NEXT WEEK. MODEL AGREEMENT IN
THE FORECAST REMAINS EXCELLENT, WITH SOME VARIATION ON TIMING
AND LOCATION OF PRECIPITATION FOR THE MONDAY-TUESDAY SYSTEM.
AVIATION
MAINLY VFR. RAIN/SNOW SHOWERS AND ISOLATED
THUNDERSTORMS DEVELOPING THIS AFTERNOON, MAINLY OVER THE HIGHER
TERRAIN. SNOW LEVELS 3500-4500 FT MSL. PERIODS OF MVFR IN RAIN,
MVFR TO LIFR IN SNOW. MOUNTAINS OBSCURED AT TIMES. SURFACE
WINDS: SW-NW 5-15 KT. GUSTS TO 35 KT IN THE MAGIC VALLEY/OWYHEE
MOUNTAINS LATER THIS MORNING AND AFTERNOON. WINDS ALOFT AT
10KFT: W-NW 15-30 KT.
KBOI...MAINLY VFR. A 10% CHANCE OF RAIN SHOWERS AND A STRAY
THUNDERSTORM THIS AFTERNOON WITH A RAIN-SNOW MIX OVERNIGHT. MVFR
EXPECTED IN SHOWERS, EXCEPT IFR POSSIBLE WITH SNOW OVERNIGHT.
SURFACE WINDS: NW 6-10 KT, WITH AFTERNOON GUSTS TO 15-20 KT,
BECOMING VARIABLE LESS THAN 5 KT BY WED/06Z.
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....SA
AVIATION.....SA
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