184
FXUS65 KBOI 231200
AFDBOI
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE BOISE ID
600 AM MDT MON MAR 23 2026
UPDATE
UPDATED AVIATION DISCUSSION.
KEY MESSAGES
- ABOVE NORMAL TEMPERATURES CONTINUE THROUGH WEDNESDAY, WITH
VALLEY HIGHS IN THE MID 70S.
- GUSTY WINDS AND VERY DRY CONDITIONS WILL BRING ELEVATED FIRE
DANGER NEAR THE OREGON-NEVADA BORDER ON TUESDAY AND WEDNESDAY
AFTERNOON.
- MOUNTAIN SHOWERS AND SLIGHTLY COOLER TEMPERATURES WILL OCCUR
FOLLOWING A COLD FRONTAL PASSAGE LATE TUESDAY INTO WEDNESDAY.
SHORT TERM /THROUGH WEDNESDAY NIGHT/
ISSUED 339 AM MDT MON MAR 23 2026
TEMPERATURES HAVE PLUMMETED TONIGHT ACROSS THE REGION,
ESPECIALLY IN HIGHER ELEVATION VALLEYS AS TEMPERATURES DIP BELOW
FREEZING. QUASI-ZONAL FLOW WILL OCCUR OVER THE REGION TODAY AS
A RIDGE OF HIGH PRESSURE BUILDS THROUGH LATE TUESDAY.
TEMPERATURES WILL CLIMB TO NEARLY 10-15 DEGREES ABOVE NORMAL BY
TUESDAY, WITH VALLEY HIGHS REACHING THE MID 70S ON TUESDAY AND
WEDNESDAY. A COLD FRONT WILL MOVE THROUGH THE REGION LATE
TUESDAY, WITH LIGHT SHOWERS DEVELOPING OVER BAKER COUNTY AND
NORTHERN HARNEY COUNTY IN OREGON AND THE WEST CENTRAL MOUNTAINS
IN IDAHO. BREEZY TO GUSTY WINDS WILL OCCUR OVER THE REGION, WITH
THE STRONGEST WINDS UP TO 50 MPH OVER SOUTHEAST OREGON NEAR THE
NEVADA BORDER. THESE GUSTY PRE-FRONTAL WINDS COMBINED WITH
SINGLE-DIGIT AFTERNOON RELATIVE HUMIDITY VALUES WILL BRING
HEIGHTENED FIRE DANGER TO THE LOWER ELEVATIONS NEAR THE OREGON-
NEVADA BORDER. TEMPERATURES WILL COOL SIGNIFICANTLY OVERNIGHT ON
WEDNESDAY, WITH SNOW LEVELS LOWERING FROM ABOVE 8000 FEET MSL
TO 4000-5000 FT MSL BY THE END OF THE PRECIPITATION. LIGHT SNOW
SHOWERS ABOVE ABOUT 5000 FEET WILL BRING MINOR SNOW ACCUMULATION
TO HIGHER ELEVATIONS OVER NORTHERN VALLEY COUNTY WEDNESDAY
NIGHT.
LONG TERM /THURSDAY THROUGH MONDAY/
ISSUED 339 AM MDT MON MAR 23 2026
REMNANTS OF THE UPPER-LEVEL DISTURBANCE FROM LATE WEDNESDAY
WILL CARRY A LOW (15-30%) CHANCE OF PRECIPITATION IN NORTHERN
VALLEY COUNTY THURSDAY MORNING INTO AFTERNOON. SNOW LEVELS
BEHIND THE COLD FRONT WILL HOVER NEAR 3000-4000 FT MSL WHERE
PRECIPITATION IS EXPECTED. HEIGHTENED WIND GUSTS WILL REMAIN A
THREAT THURSDAY AFTERNOON AS THE FRONT MOVES FURTHER SE FROM OUR
AREA. THE CORRIDOR FROM THE MOUNTAIN HOME VICINITY THROUGH THE
WESTERN MAGIC VALLEY IS THE PRIMARY AREA OF CONCERN, WITH WIND
GUSTS GREATER THAN 30 MPH AT HIGH CONFIDENCE (70-90% CHANCE).
BEGINNING FRIDAY, THE UPPER-LEVEL RIDGE LOOKS TO REBUILD OVER THE
WESTERN CONUS AND BRING TEMPERATURES ABOVE NORMAL AGAIN (WITH TEMPS
5-10 DEGREES ABOVE NORMAL BY FRIDAY, GROWING TO 10-15 DEGREES ABOVE
NORMAL OVER THE WEEKEND). RELIEF SEEMS POSSIBLE MONDAY WITH AN UPPER-
LEVEL TROUGH MOVING INTO THE PACIFIC NW, HOWEVER TIMING CONFIDENCE
WITH THIS IS LOW. THE PAST FEW MONTHS OF FORECASTING HAVE BEEN FULL
OF SIMILAR HINTS AT A TROUGH JUST BARELY AT THE END OF THE LONG
TERM, ONLY TO CONTINUALLY PUSH THE TIMING LATER AND LATER.
AVIATION /12Z MONDAY THROUGH TUESDAY/
ISSUED 556 AM MDT MON MAR 23 2026
VFR CONDITIONS WITH HIGH CLOUDS. SURFACE WINDS: LIGHT AND
VARIABLE UNDER 12 KT, EXCEPT W-SW 10-15 KT WITH GUSTS NEAR 20
KT ALONG THE ID/NV AND OR/NV BORDERS. WINDS ALOFT AT 10 KFT:
W-SW 10 TO 20 KTS.
KBOI...VFR. SURFACE WINDS: LIGHT AND VARIABLE OVERNIGHT,
BECOMING NW 4-9 KT 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
AVIATION.....CH
SHORT TERM...SA
LONG TERM....CH
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page