656
FXUS65 KBOI 142026
AFDBOI
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE BOISE ID
226 PM MDT THU MAY 14 2026
KEY MESSAGES
- NORMAL TEMPS THROUGH FRIDAY BEFORE ANOTHER COOLDOWN THIS
WEEKEND, CONDITIONS STAY DRY AND BREEZY.
- ANOTHER ROUND OF PRECIPITATION SATURDAY NIGHT INTO SUNDAY
WITH LOWER SNOW LEVELS WILL BRING SNOW TO HIGHER ELEVATIONS.
SHORT TERM /THROUGH SATURDAY NIGHT/
DRY ZONAL FLOW ALOFT WILL KEEP CONDITIONS DRY AND BREEZY THROUGH
FRIDAY EVENING. TEMPERATURES TODAY AND TOMORROW WILL BE NEAR
NORMAL. DESPITE NEAR NORMAL TEMPS, CONDITIONS REMAIN VERY DRY
WITH AFTERNOON MINIMUM RELATIVE HUMIDITIES IN THE 10S IN LOWER
ELEVATIONS AND 20S IN HIGHER ELEVATIONS. WIND GUSTS IN THE
AFTERNOON WILL BE 20-30 MPH IN THE UPPER SNAKE PLAIN, RIDGES,
AND HIGHLANDS. GUSTS WILL BE EVEN STRONGER EAST OF OUR AREA.
OVERNIGHT WINDS IN MOST AREAS CALM TO 10 MPH OR LESS, WHILE
GUSTS UP TO 25 MPH PERSIST ON RIDGES AND JUST ALONG THE SNAKE
RIVER.
SATURDAY MORNING, AN APPROACHING ALASKAN LOW MOVES INTO THE
REGION. CLOUDS INCREASE AND SHOWERS DEVELOP NORTH OF THE AREA
EARLY IN THE MORNING, MOVING INTO EASTERN OREGON AND WESTERN
IDAHO LATER IN THE MORNING AND EARLY AFTERNOON. AS THE CORE OF
THE LOW MOVES THROUGH, PRECIPITATION MOVES FROM NORTHWEST TO
SOUTHEAST AND REMAINS OVER MOUNTAINS AND HIGHLANDS. THE COLDER
AIRMASS COMING WITH THE LOW DROP SNOW LEVELS TO 4000 FT MSL BY
MIDNIGHT, POTENTIALLY DROPPING EVEN LOWER IN THE LONG TERM. THIS
SYSTEM WILL ALSO SEE THE RETURN OF VERY GUSTY WINDS BEGINNING
SATURDAY AFTERNOON WITH GUSTS TO 35-40 MPH.
LONG TERM /SUNDAY THROUGH THURSDAY/
A COLD-CORE LOW WILL CENTER OVER THE NORTHERN ROCKIES ON SUNDAY,
CONTINUING THE WELL-BELOW NORMAL TEMPERATURES ACROSS E OREGON AND SW
IDAHO. SNOW LEVELS WILL BE LOW SUNDAY MORNING, AROUND 3500-4500 FEET
MSL, BEFORE RISING TO 5000-6000 FEET BY SUNDAY AFTERNOON. A CHANCE
OF SHOWERS ARE FORECAST, MAINLY OVER THE MOUNTAINS, WITH LIGHT SNOW
ACCUMULATIONS POSSIBLE FOR THE HIGHER TERRAIN. IN ADDITION, THE
UNSTABLE CONDITIONS DUE TO THE COLD AIR ALOFT MAY ALLOW ISOLATED
THUNDERSTORMS TO DEVELOP SUNDAY AFTERNOON.
WINDY CONDITIONS WILL LAST THROUGH THE REST OF THE WEEKEND AS THE
FORECAST AREA BECOMES POSITIONED ON THE BACK SIDE OF THE LOW. THE
LOW IS EXPECTED TO DEPART TOWARD THE EAST ON MONDAY, ALLOWING
TEMPERATURES TO REBOUND WHILE WINDS AND SHOWER COVERAGE DECREASE.
NORTHWEST FLOW ALOFT WILL KEEP A SLIGHT CHANCE OF SHOWERS ACROSS THE
NORTHERN ZONES THROUGH TUESDAY, THEN WARMER AND DRIER NEAR-ZONAL
FLOW IS ANTICIPATED FOR WEDNESDAY AND THURSDAY.
AVIATION /18Z THURSDAY THROUGH FRIDAY/
ISSUED 1125 AM MDT THU MAY 14 2026
VFR AND MOSTLY CLEAR. SURFACE WINDS: W-N 5-15 KT. GUSTS 20-30 KT
OVER MAGIC VALLEY AND SE OR IN THE AFTERNOON/EVENING. WINDS ALOFT AT
10KFT MSL: W 15-25 KT.
KBOI...VFR. SURFACE WINDS: W-NW 5-15 KT, BECOMING LIGHT AND VARIABLE
AFTER SUNSET.
WEEKEND OUTLOOK: A COLD FRONTAL PASSAGE SAT-SUN WILL BRING SCATTERED
RAIN/SNOW SHOWERS OVER MOUNTAINS AND GUSTY W-NW WINDS THROUGHOUT THE
WEEKEND. LOCALIZED MVFR-IFR CONDITIONS AND MOUNTAIN OBSCURATION IN
SHOWERS. SNOW LEVELS WILL DROP FROM 5.5-6.5KFT SATURDAY TO THE 3.5-
5KFT SUNDAY. SURFACE WINDS: W-NW 10-20 KT SAT, WITH GUSTS 25-35 KT.
STRONGER WINDS SUNDAY AT NW 15-25 KT WITH GUSTS 30-40 KT OVER MOST
AREAS.
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...JM
LONG TERM....SH
AVIATION.....SH
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