972
FXUS65 KBOI 070853
AFDBOI
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE BOISE ID
253 AM MDT TUE OCT 7 2025
SHORT TERM...TODAY THROUGH THURSDAY NIGHT
A HIGH PRESSURE
RIDGE WILL REMAIN OVER THE AREA THROUGH THE SHORT TERM. AN UPPER
LEVEL TROUGH NEAR HAIDA GWAII WILL GRADUALLY MOVE SOUTH ALONG
THE COAST THROUGH THURSDAY, SHIFTING THE FLOW ALOFT TO THE
SOUTHWEST AND BRINGING WARMER TEMPERATURES TO THE REGION. WINDS
TODAY WILL GENERALLY BE FROM THE SOUTHEAST AND WILL CONTINUE
THROUGH THURSDAY. TEMPERATURES TUESDAY WARM AROUND 5 DEGREES
FROM MONDAY'S HIGHS, WITH ANOTHER 5 DEGREES OF WARMING ON
WEDNESDAY AND A FEW MORE DEGREES BY THURSDAY. AS THE SYSTEM
MOVES SOUTH ALONG THE COAST, HIGH CLOUDS INCREASE ACROSS
CENTRAL OR. THURSDAY IS LIKELY THE WARMEST DAY OF THE PERIOD FOR
EASTERN OR.
LONG TERM...FRIDAY THROUGH TUESDAY
THE AFOREMENTIONED TROUGH
WILL CONTINUE TO ROTATE ALONG THE COAST ON FRIDAY, BRINGING WARM
SOUTHERLY FLOW TO THE AREA. FRIDAY IS FORECAST TO BE THE WARMEST
DAY OF THE PERIOD FOR SOUTHWEST IDAHO. A COLD FRONT ARRIVES
LATE FRIDAY WITH A 20-40 PERCENT CHANCE OF SHOWERS, AND MAY KEEP
TEMPERATURES SLIGHTLY COOLER IN EASTERN OR DEPENDING ON THE
POSITION. THE TROUGH MOVES INLAND BY SATURDAY, WITH SHOWERS
INCREASING TO 40 PERCENT IN THE VALLEYS AND 60-70 PERCENT IN THE
MOUNTAINS. WINDS BECOME WEST-NORTHWEST ON SATURDAY AFTERNOON
WITH GUSTS TO 20 TO 30 MPH DURING THE AFTERNOON BEHIND THE
FRONT. FORECAST CONFIDENCE BEYOND SATURDAY IS LOW, BUT FAVORS
MUCH COOLER AND UNSETTLED EARLY NEXT WEEK WITH A TROUGH OVER THE
PACIFIC NORTHWEST. FORECAST MODELS CONTINUE TO STRUGGLE WITH
CURRENT AND RECENT TROPICAL SYSTEMS DISRUPTING AND ENHANCING THE
JET STREAM, PARTICULARLY IN THE EASTERN PACIFIC NEAR CABO SAN
LUCAS AND IN THE WESTERN PACIFIC OCEAN. TEMPERATURES FRIDAY IN
THE LOW 80S ACROSS SOUTHWEST IDAHO VALLEYS BEFORE COOLING 10-20
DEGREES ON SATURDAY AND ANOTHER 5-10 DEGREES ON SUNDAY.
AVIATION
VFR. CLEAR. PATCHY FOG THIS MORNING. SURFACE WINDS
E-SE 5-15KT. WINDS ALOFT AT 10KFT MSL: E-SE 5-15KT BECOMING SW
15-25KT LATE TUES AFTERNOON.
KBOI...VFR. CLEAR. SE 5-10KT.
BOI WATCHES/WARNINGS/ADVISORIES
ID...FROST ADVISORY UNTIL 9 AM MDT THIS MORNING IDZ012-014-016.
OR...FROST ADVISORY UNTIL 9 AM MDT /8 AM PDT/ THIS MORNING ORZ064.
WWW.WEATHER.GOV/BOISE
INTERACT WITH US VIA SOCIAL MEDIA:
WWW.FACEBOOK.COM/NWSBOISE
WWW.X.COM/NWSBOISE
SHORT TERM...KA
LONG TERM....KA
AVIATION.....KA
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