996
FXUS65 KBOI 301531
AFDBOI
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE BOISE ID
931 AM MDT FRI MAY 30 2025
DISCUSSION
DRY AND WARM TODAY, WITH HOTTER WEATHER COMING
TOMORROW. LATEST GUIDANCE IS CONSISTENT WITH RECORD TEMPS
TOMORROW FOR MANY LOCATIONS. READINGS WILL BE IN THE UPPER 90S
TO AROUND 100 FOR LOWER ELEVATIONS. THE HEAT ADVISORY WILL BE
KEPT IN PLACE. NO CHANGES ARE NEEDED AT THIS TIME.
AVIATION
VFR. SURFACE WINDS: MAINLY W TO NW 5-15 KT. WINDS
ALOFT AT 10KFT MSL: NW TO N 10-20 KT.
KBOI...VFR. SURFACE WINDS NW 5-10 KT BECOMING LIGHT AND VARIABLE
AFTER 04Z.
WEEKEND OUTLOOK...VFR. HOT SATURDAY, RESULTING IN HIGH DENSITY
ALTITUDE ACROSS THE REGION. A 15-30 PERCENT CHANCE OF SHOWERS IN SW
ID SUNDAY AFTERNOON AND EVENING, PRIMARILY ALONG ID/NV BORDER.
SURFACE WINDS: MAINLY VARIABLE TO 10 KT ON SATURDAY, THEN NW 10-20
KT WITH GUSTS TO 30 KT SATURDAY NIGHT THROUGH SUNDAY.
PREV DISCUSSION
SHORT TERM...TODAY THROUGH SUNDAY NIGHT...AN UPPER RIDGE
STRENGTHENS TODAY FOR DRY CONDITIONS. TEMPERATURES WILL BE
SLIGHTLY LOWER IN SOME AREAS, HOWEVER, DUE TO THE PASSAGE OF A
WEAK COLD FRONT YESTERDAY, BUT STILL 10 TO 15 DEGREES ABOVE
NORMAL. THE RIDGE STARTS TO MOVE EAST ON SATURDAY, ALLOWING FOR
SOUTHWEST FLOW TO IMPORT EVEN WARMER AIR INTO THE REGION. HIGHS
WILL BE THE WARMEST SO FAR THIS YEAR WITH SEVERAL RECORDS
EXPECTED TO BE MET OR EXCEEDED. A HEAT ADVISORY REMAINS IN
EFFECT FOR THE VALLEYS DUE TO HOT TEMPERATURES IN THE 90S TO
AROUND 100F. A COLD FRONT MOVES THROUGH SUNDAY NIGHT,
ACCOMPANIED BY BREEZY TO WINDY CONDITIONS THAT PERSIST INTO
SUNDAY. THE FRONT WILL BRING 10 TO 20 DEGREES OF COOLING WITH
HIGHS IN THE 70S TO MID 80S. IT WILL BE A MOSTLY DRY FRONT, BUT
THERE IS A 15 TO 30 PERCENT CHANCE OF SHOWERS IN THE HIGHER
ELEVATIONS OF SW IDAHO IN THE AFTERNOON AND EVENING.
LONG TERM...MONDAY THROUGH FRIDAY...MODELS CONTINUE TO TREND
DRIER AND WARMER COMPARED TO PREVIOUS RUNS FOR EARLY TO
MIDWEEK, BUT THERE REMAINS A 15 TO 30 PERCENT CHANCE OF SHOWERS
OVER THE HIGHER ELEVATIONS OF SW IDAHO. TEMPERATURES AVERAGE
WITHIN A FEW DEGREES OF NORMAL. A DRY NORTHWEST FLOW IS FAVORED
BY MOST ENSEMBLES FOR THE END OF THE WEEK WITH A SLIGHT UPWARD
TREND IN TEMPERATURES.
BOI WATCHES/WARNINGS/ADVISORIES
ID...HEAT ADVISORY FROM NOON TO 7 PM MDT SATURDAY
IDZ012-014-016-033.
OR...HEAT ADVISORY FROM NOON MDT /11 AM PDT/ TO 7 PM MDT /6 PM PDT/
SATURDAY ORZ061>064.
WWW.WEATHER.GOV/BOISE
INTERACT WITH US VIA SOCIAL MEDIA:
WWW.FACEBOOK.COM/NWSBOISE
WWW.X.COM/NWSBOISE
DISCUSSION...SP
AVIATION.....CH
SHORT TERM...BW
LONG TERM....BW
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