631
FXUS65 KBOI 080248
AFDBOI
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE BOISE ID
848 PM MDT THU AUG 7 2025
DISCUSSION
A FEW SHOWERS ARE HANGING ON THIS EVENING ACROSS
NORTHEAST VALLEY COUNTY AND EASTERN BOISE COUNTY. OTHERWISE
DRIER AIR IS WORKING INTO THE REGION ON THE BACKSIDE OF A
DEPARTING UPPER TROUGH. SHOWER ACTIVITY WILL SHUT DOWN SHORTLY
AFTER SUNSET. GUSTY NORTHWEST SURFACE WINDS ARE MOSTLY BELOW 30
MPH WITH LOCALLY WINDIER SPOTS ALONG THE I-84 CORRIDOR AND
ACROSS OPEN TERRAIN NEAR THE NV BORDER TOPPING OUT AROUND 40
MPH. THESE AREAS WILL REMAIN BREEZY THROUGH TONIGHT. CLEARING
SKIES AND THE COOLER/DRIER AIR MASS BEHIND THE TROUGH WILL
RESULT IN A CHILLY MORNING, WITH LOW TEMPERATURES AROUND 10
DEGREES BELOW NORMAL (LOW 50S IN THE SNAKE PLANE AND UPPER 30S
TO LOW 40S IN MTN VALLEYS). MOUNTAIN VALLEYS COULD ALSO SEE
PATCHY FOG, ESPECIALLY SITES THAT PICKED UP RAIN THIS EVENING.
NO EVENING UPDATE AS CURRENT FORECAST IS ON TRACK.
AVIATION
VFR. SURFACE WINDS: W-NW 10-15 KT GUSTING TO AROUND
25 KT THIS EVENING. BECOMING VARIABLE 5-10 KT AFTER FRI/06Z.
GUSTS UP TO 30 KT SOUTH AND EAST OF KMUO THROUGH 09Z. WINDS
ALOFT AT 10KFT MSL: W 15-25 KT.
KBOI...VFR. SURFACE WINDS: W TO NW 10-15 KT WITH GUSTS UP TO 25
KT THIS EVENING. DECREASING TO W-NW UNDER 10KT BY FRI/05Z
WEEKEND OUTLOOK...VFR. SURFACE WINDS: GENERALLY W-N 5-15 KT,
AFTERNOON GUSTS TO 15-25 KT.
PREV DISCUSSION
SHORT TERM...TONIGHT THROUGH SATURDAY NIGHT...AN UPPER LEVEL
TROUGH WILL MOVE EAST ACROSS THE IDAHO PANHANDLE THIS EVENING
AND THROUGH MONTANA ON FRIDAY. SHOWERS AND THUNDERSTORMS NEAR
THE LOW CENTER OVER THE WEST-CENTRAL IDAHO MOUNTAINS WILL END
THIS EVENING AS THE TROUGH EXITS. THE TROUGH WILL CONTINUE TO
BRING WIND GUSTS OF 20-35 MPH TO THE AREA THIS EVENING. WINDS
WILL REMAIN BREEZY THROUGH THE SNAKE BASIN OVERNIGHT BUT SHOULD
SUBSIDE ELSEWHERE.
TEMPERATURES FRIDAY WILL DROP ANOTHER 3-5 DEGREES FROM TODAY AS
DRY NORTHWEST FLOW DEVELOPS BEHIND THE TROUGH. THIS WILL RESULT
IN TEMPERATURES 10-15 DEGREES BELOW NORMAL FOR EARLY AUGUST.
WIND GUSTS OF 20-30 MPH WILL REDEVELOP FRIDAY AFTERNOON
SOUTHEAST OF BOISE THROUGH THE MAGIC VALLEY, WITH LIGHTER WINDS
ELSEWHERE. ON SATURDAY, TEMPERATURES WILL START TO REBOUND AS AN
UPPER LEVEL RIDGE OVER THE EASTERN PACIFIC BEGINS TO BUILD
INLAND. DESPITE THE WARMING, TEMPERATURES WILL STILL BE AROUND 5
DEGREES BELOW NORMAL. DRY CONDITIONS WILL PREVAIL FRIDAY AND
SATURDAY UNDER PARTLY TO MOSTLY CLEAR SKIES.
LONG TERM...SUNDAY THROUGH THURSDAY...AN UPPER RIDGE OFF THE
PACNW COAST WILL PROVIDE A DRY NORTHWEST FLOW ALOFT ACROSS OUR
AREA EARLY NEXT WEEK ALONG WITH TEMPERATURES WITHIN A FEW
DEGREES OF NORMAL. NEWER MODEL RUNS ARE NOW TRENDING TOWARD AN
UPPER TROUGH ACROSS SOUTHWESTERN CANADA EXTENDING INTO THE PACNW
BY MIDWEEK. MOISTURE ASSOCIATED WITH IT LOOKS TO REMAIN NORTH
OF THE AREA FOR CONTINUED DRY CONDITIONS, ALONG WITH A SLIGHT
COOLING TREND LATER IN THE WEEK.
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...DG
AVIATION.....NF
SHORT TERM...ST
LONG TERM....BW
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