680
FXUS65 KBOI 072032
AFDBOI
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE BOISE ID
232 PM MDT MON JUL 7 2025
SHORT TERM...TONIGHT THROUGH WEDNESDAY NIGHT
HIGH PRESSURE WILL
CONTINUE TO BUILD INTO THE REGION TODAY, BRINGING VERY HOT
TEMPERATURES AND DRY CONDITIONS TODAY AND TOMORROW. TOMORROW'S
HIGHS AT 102-103F IN THE BOISE METRO AREA WILL BE NEAR RECORD
FOR THIS TIME OF YEAR (104F), WITH LOCATIONS NEAR EMMETT, ID
REACHING NEARLY 106F. DESPITE RELATIVELY GOOD OVERNIGHT COOLING,
HAVE OPTED TO ADD A HEAT ADVISORY FOR TOMORROW AFTERNOON AND
EVENING FOR THE TREASURE VALLEY ZONES.
A WEAK SHORTWAVE TROUGH STEMMING FROM A CLOSED LOW MOVING INTO
CALIFORNIA WILL BRING SUFFICIENT INSTABILITY (400-700 J/KG OF
MUCAPE) TO SOUTHEAST OREGON TOMORROW AFTERNOON AND EVENING.
THERE'S A RISK OF ISOLATED SHOWERS AND THUNDERSTORMS WITH THIS
TROUGH PASSAGE TOMORROW AFTERNOON AND AGAIN ON WEDNESDAY
EVENING. A WEAKER COLD FRONTAL PASSAGE WILL OCCUR ON WEDNESDAY
EVENING, SO HAVE OPTED TO EXPAND SHOWER AND THUNDERSTORM CHANCES
ACROSS THE REGION, WITH MOST LOCATIONS SEEING A 15-25% CHANCE
OF THUNDERSTORMS. WITH BOTH SETS OF SHOWERS AND THUNDERSTORMS
THESE DAYS, DRY SURFACE AIR WILL LIMIT PRECIPITATION AND CREATE
OPTIMAL CONDITIONS FOR GUSTY AND ERRATIC OUTFLOW WINDS. SOME HI-
RES MODELS ARE SHOWING GUSTS UP TO 40-50 MPH WITH STRONGER
SHOWERS. BECAUSE OF THE THREAT OF LIGHTNING IN DRIER
THUNDERSTORMS AND THE HIGHER CONFIDENCE IN COVERAGE ON
WEDNESDAY, WE'VE ADDED A FIRE WEATHER WATCH OVER SOUTHEAST
OREGON ZONES FOR WEDNESDAY AFTERNOON AND EVENING. WINDS WILL
CONTINUE TO STAY ELEVATED ON WEDNESDAY EVENING, WITH SLIGHT
IMPROVEMENT IN HUMIDITY AND MUCH COOLER TEMPERATURES THANKS TO
THE COLD FRONTAL PASSAGE.
LONG TERM...THURSDAY THROUGH MONDAY...AN UPPER TROUGH MOVING THROUGH
THE NORTHERN ROCKIES WILL SEND A DRY COLD FRONT ACROSS SE OREGON AND
SW IDAHO ON THURSDAY. THE POST-FRONTAL WINDS ARE EXPECTED TO BE
GUSTY IN THE AFTERNOON, ESPECIALLY IN S-CENTRAL IDAHO WITH GUSTS TO
35 MPH. COOLER TEMPERATURES ARRIVE WITH THE PASSAGE OF THE FRONT
WITH VALLEY HIGHS IN THE 80S, WHICH IS AROUND 5 DEGREES BELOW
NORMAL. A DRY NORTHWEST FLOW ALOFT FOLLOWS FOR THE END OF THE WEEK
AND INTO EARLY NEXT WEEK. TEMPERATURES BEGIN TO CLIMB BACK UP TO
SLIGHTLY ABOVE NORMAL BY SATURDAY AND REMAIN AT LEAST A FEW DEGREES
ABOVE NORMAL THROUGH MONDAY.
AVIATION
VFR UNDER CLEAR SKIES. SURFACE WINDS: VARIABLE LESS THAN
10 KT. WINDS ALOFT AT 10KFT MSL: W 5-15 KT.
KBOI...VFR. SURFACE WINDS: NW 5-10 KT.
BOI WATCHES/WARNINGS/ADVISORIES
ID...HEAT ADVISORY FROM NOON TO 9 PM MDT TUESDAY IDZ012-014.
OR...HEAT ADVISORY FROM NOON MDT /11 AM PDT/ TO 9 PM MDT /8 PM PDT/
TUESDAY ORZ064.
FIRE WEATHER WATCH FROM WEDNESDAY AFTERNOON THROUGH WEDNESDAY
EVENING ORZ670-672>674.
WWW.WEATHER.GOV/BOISE
INTERACT WITH US VIA SOCIAL MEDIA:
WWW.FACEBOOK.COM/NWSBOISE
WWW.X.COM/NWSBOISE
SHORT TERM...SA
LONG TERM....BW
AVIATION.....BW
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