192
FXUS65 KBOI 030528
AFDBOI
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE BOISE ID
1028 PM MST MON MAR 2 2026
KEY MESSAGES
- AREAS OF LOW STRATUS AND PATCHY VALLEY FOG OVERNIGHT INTO
EARLY TUESDAY.
- MOSTLY SUNNY AND SPRING-LIKE TUESDAY.
- STRONG COLD FRONT LATE WEDNESDAY. SNOW LEVELS LOWERING TO
3500-4500FT WITH 3 TO 6 INCHES OF SNOW ABOVE 6000FT.
- WINDY THURSDAY, ESPECIALLY IN SOUTH-CENTRAL IDAHO THURSDAY
AFTERNOON.
- PATTERN CHANGE TO COLDER AND SHOWERY LIKELY EARLY NEXT WEEK.
AVIATION /06Z TUESDAY THROUGH WEDNESDAY/
ISSUED 1027 PM MST MON MAR 2 2026
AREAS OF MVFR TO LIFR DEVELOPING IN LOW STRATUS AND VALLEY FOG
LATE TONIGHT. HIGHEST IMPACT AREAS INCLUDE KJER/KGNG AND KEUL.
CONDITIONS IMPROVING AFTER TUE/16Z. SURFACE WINDS: BECOMING
LIGHT AND VARIABLE OVERNIGHT, EXCEPT SW 10-15 KT FOR MAGIC
VALLEY. WINDS ALOFT AT 10KFT MSL: N-NE 5-15 KT, BECOMING
VARIABLE 5-10 KT AFTER TUE/12Z.
KBOI...LOW VFR/MVFR DUE TO MIST EXPECTED AFTER TUE/08Z.
CURRENTLY A 40% CHANCE OF IFR/LIFR BETWEEN TUE/11Z-15Z, BUT
CONFIDENCE IS LOW DUE TO LIGHT SE SURFACE WINDS DEVELOPING IN
THE MORNING HOURS. VFR AND MOSTLY CLEAR AFTER TUE/16Z. SURFACE
WINDS: NW AROUND 5 KT, BECOMING LIGHT AND VARIABLE OVERNIGHT.
THEN, SE 5-15 KT AFTER TUE/16Z.
SHORT TERM /THROUGH WEDNESDAY NIGHT/
ISSUED 212 PM MST MON MAR 2 2026
CURRENT SYSTEM HAS PROVED EVEN WEAKER THAN MODELS PREDICTED
WITH LESS PCPN AND ONLY LIGHT WINDS. AT 2 PM MST THE WETTEST
AREA WAS NEAR THE ID/UT BORDER, WELL EAST OF THE SUPPORTING
UPPER LOW IN SOUTHEAST OR. THE UPPER LOW WILL MOVE EASTWARD
ACROSS OUR SOUTHERN ZONES THIS EVENING WITH ONLY SCATTERED LIGHT
RAIN SHOWERS. WE NOTE THAT A COUPLE LIGHTNING STRIKES HAVE
ALREADY OCCURRED IN SOUTHWEST IDAHO SO WE ARE CONTINUING
ISOLATED THUNDERSTORMS IN THE SOUTHWEST HIGHLANDS AND NEAR
GLENNS FERRY UNTIL EARLY EVENING. TODAY'S LIGHT RAIN WILL LEAVE
THE LOWER LEVELS MOIST, FAVORABLE FOR PATCHY VALLEY FOG
OVERNIGHT AND EARLY TUESDAY MORNING WHEN TEMPS ARE COOLEST.
LATER TUESDAY AN UPPER RIDGE WILL COME INLAND FROM THE PACIFIC
AND RAISE TEMPS TO THE LOWER 60S IN THE SOUTHERN VALLEYS AND
UPPER 40S THROUGH 50S ELSEWHERE, NORMAL FOR MID- APRIL. THE NEXT
TROUGH WILL APPROACH FROM THE GULF OF ALASKA ON WEDNESDAY,
BRINGING RAIN SHOWERS AND A COLD FRONT LATE WEDNESDAY AND
WEDNESDAY NIGHT. THAT SYSTEM WILL BE STRONGER, COLDER, AND
WETTER THAT THE CURRENT ONE. TOTAL PCPN THROUGH WEDNESDAY NIGHT
SHOULD BE .25 TO .50 INCH, WITH SNOW LEVEL STAYING ABOVE 6000
FEET UNTIL NEAR THE END OF PCPN.
LONG TERM /THURSDAY THROUGH MONDAY/
ISSUED 212 PM MST MON MAR 2 2026
FOLLOWING THE COLD FRONT WEDNESDAY EVENING, THURSDAY WILL SEE
GUSTY WINDS, COLDER TEMPERATURES, AND A CHANCE OF SHOWERS IN
HIGH ELEVATION AREAS. GUSTS ON THURSDAY WILL REACH 30 TO 45 MPH
IN THE SNAKE PLAIN AND HIGHLANDS. TEMPS COOL DOWN TO A FEW
DEGREES BELOW NORMAL FOR THIS TIME OF YEAR. HIGH PRESSURE BUILDS
IN THE NORTH PACIFIC, LEADING TO A WARMING TREND THROUGH THE
WEEKEND. DURING THIS SAME TIME, NORTHWEST FLOW ALOFT PERSISTS
LEADING TO A 40% CHANCE OF PRECIPITATION EACH DAY IN THE
MOUNTAINS. TEMPERATURES BY SUNDAY REACH 5-10 DEGREES ABOVE
NORMAL. FRIDAY, WIND GUSTS 25 TO 35 MPH ARE POSSIBLE IN THE SAME
AREAS AS THURSDAY, BUT OVER THE WEEKEND WINDS ARE REDUCED TO 5
TO 15 MPH. MINIMAL MOUNTAIN SNOW OR VALLEY RAIN ACCUMULATION IS
EXPECTED OVER THE DURATION OF THIS MILDER WEATHER.
SUNDAY IS CURRENTLY FORECAST TO BE THE WARMEST DAY IN THE LONG
\TERM,ALTHOUGH PRECIPITATION CHANCES AND CLOUD COVER BEGIN TO
INCREASE AS A STRONG PRESSURE GRADIENT DEVELOPS NORTH OF THE
PACIFIC HIGH. THIS PRESSURE GRADIENT WILL SUPPORT STRONG
MOISTURE FLUX THROUGH THE PACIFIC AND INTERIOR NORTHWEST,
INCLUDING OUR AREA. CURRENTLY, PRECIPITATION IS MOST LIKELY
IN NORTHERN AREAS, BUT RUN-TO-RUN TRENDS HAVE CARRIED THE
PRECIPITATION FARTHER SOUTH AND MODEL SOLUTIONS PAST THE LONG
TERM FORECAST CONTINUE TO CARRY IT SOUTH. A COLDER AND WETTER
START TO NEXT WEEK SEEMS LIKELY.
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.....SH
SHORT TERM...LC
LONG TERM....JM
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