935
FXUS65 KBOI 050238
AFDBOI
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE BOISE ID
838 PM MDT MON AUG 4 2025
DISCUSSION
AS OF 8:30 PM MDT, ONLY A FEW THUNDERSTORMS
REMAIN ACROSS VALLEY COUNTY, LOCATED JUST AHEAD OF THE UPPER-
LEVEL LOW CENTER, WHICH WILL CONTINUE TRACKING NORTHEAST INTO
WESTERN MONTANA BY AROUND 10 PM MDT.
THUNDERSTORM COVERAGE REMAINED ISOLATED OVERALL THIS AFTERNOON,
WITH ACTIVITY BEGINNING ACROSS MALHEUR COUNTY BEFORE SHIFTING
INTO PORTIONS OF THE LOWER TREASURE VALLEY AND BAKER COUNTY,
THEN CONTINUING ACROSS THE WEST CENTRAL MOUNTAINS. SEVERAL
REPORTS WERE RECEIVED OF DIME TO NICKEL-SIZED HAIL AND HEAVY
RAINFALL WITH THE STRONGEST STORMS. A FEW STORMS LIKELY PRODUCED
HAIL UP TO ONE INCH IN DIAMETER, PARTICULARLY WEST OF HARPER,
OREGON, AND BETWEEN ONTARIO, OREGON AND OLA, IDAHO.
STORM ACTIVITY WILL END BY 10 PM MDT, WITH CLEARING SKIES
PROGRESSING FROM SOUTHWEST TO NORTHEAST OVERNIGHT. A WARMING AND
DRYING TREND WILL FOLLOW THROUGH THURSDAY AS SOUTHWESTERLY FLOW
ALOFT BECOMES ESTABLISHED ACROSS THE REGION.
AVIATION
VFR. ONGOING SHOWERS AND THUNDERSTORMS NEAR KMYL TO MOVE
OUT OF THE AREA BY 04Z. SUNNY AND CLEAR CONDITIONS TUESDAY. SURFACE
WINDS: NW-W 5-15 KT, BECOMING LIGHT AND VARIABLE OVERNIGHT. WINDS
ALOFT AT 10KFT MSL: W 10-20 KT.
KBOI...VFR. GUSTY WINDS TO END AROUND 04Z. SUNNY AND CLEAR
CONDITIONS TUESDAY. SURFACE WINDS: NW 10-15 KT, WITH GUSTS TO 25
KTS, BECOMING LIGHT AND VARIABLE OVERNIGHT.
PREV DISCUSSION
SHORT TERM...TONIGHT THROUGH WEDNESDAY NIGHT...ISOLATED TO
SCATTERED THUNDERSTORMS AND SHOWERS TODAY AS A SHORTWAVE MOVES
THROUGH THE AREA. STRONGER STORMS WILL REMAIN CLOSER TO THE
CIRCULATION, CURRENTLY IN EASTERN OREGON BUT MOVING TO CENTRAL
IDAHO TONIGHT. STORMS WILL BE CAPABLE OF OUTFLOWS UP TO 50 MPH,
SMALL HAIL, AND LOCALLY MODERATE/HEAVY RAINFALL. CAPE IS
LIMITED, AND MOST MODELS SEEMED TO BE TOO BULLISH WITH THE
THUNDERSTORM COVERAGE IN THE EARLY AFTERNOON. BREEZY AND COOLER
THAN NORMAL CONDITIONS TODAY BECOME MILD WITH TEMPS ABOUT NORMAL
TUESDAY THROUGH WEDNESDAY.
LONG TERM...THURSDAY THROUGH MONDAY...A MOSTLY DRY COLD FRONT WILL
SLIP THROUGH THE REGION ON THURSDAY AS AN UPPER TROUGH TRACKS
THROUGH NORTHERN ID. THE SOUTHERN REACHES OF PRECIPITATION CHANCES
(15-25%) BRIEFLY EXTEND INTO BAKER COUNTY AND THE W-CENTRAL IDAHO
MTNS, OTHERWISE IT REMAINS DRY THROUGH THE WEEKEND AND INTO NEXT
WEEK. TEMPERATURES ON THURSDAY AND FRIDAY DROP TO AROUND 10 DEGREES
BELOW NORMAL AND WILL BE ACCOMPANIED BY BREEZY NORTHWEST WINDS.
WE'LL THEN SEE A WARMING TREND THROUGH THE WEEKEND IN RESPONSE TO A
BUILDING OFFSHORE RIDGE.
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
DISCUSSION...JDS
AVIATION.....CH
SHORT TERM...JM
LONG TERM....DG
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