721
FXUS65 KBOI 042017
AFDBOI
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE BOISE ID
217 PM MDT SAT JUL 4 2026
KEY MESSAGES
- HOT WEATHER WILL CONTINUE THROUGH MONDAY FOLLOWED BY SLIGHT
COOLING MIDWEEK, THEN TRENDING HOTTER AGAIN BEGINNING FRIDAY,
BECOMING EXTREMELY HOT NEXT WEEKEND.
- ISOLATED THUNDERSTORMS OVER HIGHER TERRAIN IN EASTERN OREGON
SUNDAY AFTERNOON AND NIGHT, SPREADING INTO WESTERN IDAHO MONDAY,
THEN ENDING WEST TO EAST TUESDAY.
- BREEZY WINDS EACH AFTERNOON.
SHORT TERM /THROUGH MONDAY NIGHT/
HOT WEATHER WILL PEAK SUNDAY AND MONDAY AS WESTERLY FLOW
ALOFT BACKS TO SOUTHWESTERLY. THE INCREASING SOUTHERLY
COMPONENT WILL GRADUALLY DRAW MID-LEVEL MOISTURE NORTHWARD
INTO OUR CWA, RESULTING IN ISOLATED THUNDERSTORMS SUNDAY
AFTERNOON IN HARNEY COUNTY, THEN OVER THE REST OF EASTERN
OREGON SUNDAY NIGHT THROUGH MONDAY NIGHT. A SLIGHT CHANCE
OF THUNDERSTORMS WILL DEVELOP IN WESTERN IDAHO MONDAY
AFTERNOON AND MONDAY NIGHT. DUE TO LOW-LEVEL DRYNESS,
LIGHTNING AND GUSTY OUTFLOW WINDS TO 50 MPH WILL BE THE
PRIMARY THUNDERSTORM THREATS. OUTSIDE OF THUNDERSTORMS, EXPECT
BREEZY CONDITIONS IN EASTERN OREGON THIS EVENING WITH GUSTS
20-35 MPH, WITH SIMILAR GUSTS SUNDAY AFTERNOON BUT IN IDAHO AS
WELL.
LONG TERM /TUESDAY THROUGH SATURDAY/
A RIDGE WILL REMAIN
OVER THE FOUR CORNERS REGION WITH CONTINUED HOT TEMPERATURES
AND SOUTHWEST FLOW OVER THE AREA. RESIDUAL MONSOON MOISTURE
CONTINUES INTO TUESDAY WITH A CHANCE OF THUNDERSTORMS AS A
SHORTWAVE MOVES ACROSS THE PACIFIC NW. WESTERLY FLOW SHUNTS THE
MOISTURE TO THE EAST ON WEDNESDAY AND THURSDAY WITH DRY AND
BREEZY CONDITIONS AND SLIGHTLY COOLER TEMPERATURES. TEMPERATURES
TUESDAY AND WEDNESDAY AROUND 5-10 DEGREES ABOVE NORMAL COOLING
TO NEAR NORMAL ON THURSDAY. THE RIDGE EXPANDS OVER THE AREA ON
FRIDAY BRINGING HOTTER TEMPERATURES FOR NEXT WEEKEND.
AVIATION /18Z SATURDAY THROUGH SUNDAY/
ISSUED 1211 PM MDT SAT JUL 4 2026
VFR. HIGH DENSITY ALTITUDE IN THE AFTERNOON/EVENING DUE TO
HEAT. SURFACE WINDS: VARIABLE 10 KT OR LESS, BECOMING SW-NW
5-15 KT IN THE AFTERNOON. NW GUSTS 15-25 KT KBKE TO KONO THIS
EVENING. WINDS ALOFT AT 10KFT MSL: SW 10-20 KT.
KBOI...VFR UNDER CLEAR SKIES. SURFACE WINDS: SE 5-10 KT, THEN
NW 7-12 KT IN THE AFTERNOON, BECOMING VARIABLE LESS THAN 10 KT
OVERNIGHT.
SUNDAY OUTLOOK...MAINLY VFR. ISOLATED THUNDERSTORMS OVER
SE OREGON, FAR SW IDAHO, AND THE CENTRAL IDAHO MOUNTAINS LATE
AFTERNOON AND EVENING. HIGH DENSITY ALTITUDE IN THE AFTERNOON
AND EVENING DUE TO HEAT. GUSTY OUTFLOW WINDS FROM SHOWERS AND
THUNDERSTORMS UP TO 50 KT. SURFACE WINDS: W-NW 5-15 KT. NW
GUSTS 20-30 KT KBKE TO KONO AND NEAR KMUO IN THE EVENING.
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
SHORT TERM...LC
LONG TERM....KA
AVIATION.....KA
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