266
FXUS65 KBOI 171126
AFDBOI
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE BOISE ID
526 AM MDT TUE MAR 17 2026
UPDATE
UPDATED AVIATION DISCUSSION.
KEY MESSAGES
- BREEZY AFTERNOON WIND GUSTS NEAR THE MAGIC VALLEY TUESDAY
- STRONG WARMING TODAY THROUGH WEDNESDAY, WITH RECORD HIGH
TEMPERATURES AND DRY CONDITIONS CONTINUING THROUGH SATURDAY
SHORT TERM /THROUGH THURSDAY NIGHT/
ISSUED 318 AM MDT TUE MAR 17 2026
A SHARP WARMING TREND WILL CONTINUE THROUGH TOMORROW AS AN
ANOMALOUSLY STRONG RIDGE BUILDS OVER THE AREA. TODAY'S
AFTERNOON HIGHS WILL BE OVER 10 DEGREES WARMER THAN MONDAY, AND
WEDNESDAY 5-10 DEGREES WARMER THAN TODAY. WEDNESDAY'S
TEMPERATURES WILL BE ABOUT 20 DEGREES ABOVE NORMAL, AND STAYING
THAT WAY THROUGH THE WEEK. THERE IS HIGH CONFIDENCE DAILY HIGH
TEMPERATURE RECORDS WILL BE THREATENED OR BROKEN EACH AFTERNOON.
AS THE RIDGE BUILDS IN AND PUSHES THE JET STREAM NORTH, A
LINGERING <10% CHANCE OF RAIN SHOWERS THIS AFTERNOON IN NORTH-
CENTRAL IDAHO. ADDITIONALLY, WINDS IN HIGHLANDS AND THE MAGIC
VALLEY WILL GUST 20 TO 30 MPH THIS AFTERNOON, BEFORE CALMING THE
REST OF THE WEEK.
LONG TERM /FRIDAY THROUGH TUESDAY/
ISSUED 318 AM MDT TUE MAR 17 2026
RECORD HIGH TEMPERATURES CONTINUE THROUGH FRIDAY AS THE STRONG
RIDGE REMAINS IN PLACE. TEMPERATURES REMAIN ABOUT 20 DEGREES
ABOVE NORMAL, AND DRY WEATHER IS EXPECTED. AS AN ALASKAN LOW
MOVES SOUTHEASTWARD ALONG THE PACIFIC COAST, THE RIDGE GETS
PUSHED SOUTH AND STRONG ZONAL FLOW BEGINS AN AIRMASS CHANGE FOR
THE REST OF THE LONG TERM. WINDS BECOME MILDLY BREEZY, SKIES
PARTLY CLOUDY, TEMPS DROP SLIGHTLY, AND A 20-40% CHANCE OF
PRECIPITATION SETS IN ACROSS THE NORTH. THE COOLING TREND AND
CLOUDY SKIES CONTINUE SUNDAY, WITH TEMPS SET TO HOLD STEADY
AROUND NORMAL FOR THIS TIME OF YEAR. MONDAY AFTERNOON ANOTHER
10-20% CHANCE OF PRECIPITATION MOVES ACROSS THE NORTH, AHEAD OF
THE APPROACHING ALASKAN LOW. TUESDAY EVENING THERE IS HIGH
CONFIDENCE IN A COLD A WET SYSTEM MOVING THROUGH THE AREA AS THE
LOW'S COLD FRONT PASSES.
AVIATION /12Z TUESDAY THROUGH WEDNESDAY/
ISSUED 522 AM MDT TUE MAR 17 2026
VFR WITH SCATTERED HIGH CLOUDS. ISOLATED LIGHT SHOWERS NORTH OF
BKE/MYL THIS AFTERNOON, <10% CHANCE OF PRECIP AT THE SITES.
SURFACE WIND: LIGHT AND VARIABLE, BECOMING W-NW 5-15 KT THIS
AFTERNOON. WINDS ALOFT AT 10KFT MSL: NW 25-35 KT.
KBOI...VFR AND MOSTLY CLEAR. VERY CALM SE WINDS PICKING UP TO
5-10 KT OUT OF THE NW THIS AFTERNOON.
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
AVIATION.....JM
SHORT TERM...JM
LONG TERM....JM
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