842
FXUS65 KBOI 311926
AFDBOI
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE BOISE ID
126 PM MDT SAT MAY 31 2025
SHORT TERM...TONIGHT THROUGH MONDAY NIGHT
A COLD FRONT IS
POISED TO MOVE THROUGH THE AREA TONIGHT, ENTERING BAKER COUNTY
AROUND 5 PM PDT, AND EXITING TO OUR AROUND SUNRISE SUNDAY. LIGHT
SHOWERS MAY ACCOMPANY THE FRONT IN VALLEY COUNTY. A WIND
ADVISORY HAS BEEN ISSUED FOR THE LOWER TREASURE VALLEY OF OREGON
FOR THIS EVENING AND OVERNIGHT. WIND GUSTS TO 50 MPH ARE LIKELY
FROM ONTARIO TO THE WEST AND NORTHWEST. WHILE NO ADVISORY IS IN
PLACE FOR BAKER COUNTY, THE STRONGEST WINDS WILL STRETCH JUST
UP INTO THE SOUTHEAST CORNER SO FOLKS THERE SHOULD PREPARE AS IF
AN ADVISORY IS IN PLACE. BLOWING DUST MAY OCCUR ALONG AND FOR A
FEW HOURS AFTER FRONTAL PASSAGE IN LOWER ELEVATIONS, BUT IT IS
NOT EXPECTED TO REDUCE VISIBILITIES BELOW 2 MILES. OTHERWISE,
TODAY IS THE HOT DAY WE HAVE BEEN FORECASTING FOR DAYS, AND IT'S
WORKING OUT AS EXPECTED. RECORDS WILL BE SET THIS AFTERNOON.
SUNDAY WILL BE 15 TO 20 DEGREES COOLER, BUT STILL ABOVE AVERAGE
FOR THE DATE. SCATTERED SHOWERS AND ISOLATED THUNDERSTORMS ARE
FORECAST ALONG THE EASTERN EDGE OF THE CWA IN THE MOUNTAINS
(GENERALLY FROM YELLOW PINE SOUTH TO LOWMAN AND THEN SOUTHEAST
OF ATLANTA), AND ALSO IN SOUTHERN TWIN FALLS COUNTY AND FAR
SOUTHEAST OWYHEE COUNTY FOR SUNDAY AFTERNOON, CONTINUING INTO
THE EVENING IN THE OWYHEE AND TWIN FALLS AREAS (BUT NOT IN THE
MOUNTAINS). THE REMAINDER OF SUNDAY NIGHT THROUGH MONDAY NIGHT
WILL BE DRY AND BREEZY. MONDAY'S TEMPS WILL BE JUST A COUPLE
DEGREES ABOVE NORMAL.
LONG TERM...TUESDAY THROUGH SATURDAY
THE FORECAST AREA WILL
BECOME SANDWICHED BETWEEN STRONG HIGH PRESSURE OVER THE EASTERN
PACIFIC, AND LOW PRESSURE OVER THE NORTHERN US. AS A RESULT,
NORTHWEST FLOW WILL DOMINATE ALOFT FOR SW IDAHO AND SE OREGON
TUESDAY THROUGH FRIDAY. INTERMITTENT SHORTWAVE TROUGHS WILL
MIGRATE THROUGH THE NORTHWEST FLOW, BUT LIMITED MOISTURE HAS
KEPT THE PROBABILITY OF AFTERNOON SHOWERS AND THUNDERSTORMS AT
OR BELOW 15 PERCENT. TEMPERATURES ARE FORECAST TO BE SLIGHTLY
ABOVE NORMAL THROUGH WEDNESDAY, BUT A WARMING TREND IS EXPECTED
TOWARD THE END OF THE WEEK AS HEIGHTS BEGIN TO RISE. EXPECT
AFTERNOON BREEZES THROUGH THE EXTENDED.
AVIATION
GENERALLY VFR. HIGH DENSITY ALTITUDE DUE TO HEAT
THROUGH THIS EVE. A 20% CHANCE OF SHOWERS/THUNDERSTORMS SUNDAY P.M.
IN THE CENTRAL ID MOUNTAINS EAST OF KMYL, AND IN S-CENTRAL IDAHO.
SURFACE WINDS: SW-SE 5-15 KT, BECOMING NW 10-20 KT WITH GUSTS 20-35
KT LATE THIS EVE. GUSTS UP TO 45-50 KT BETWEEN KBKE-KONO AND AROUND
KMUO TONIGHT. PATCHY BLOWING DUST REDUCING VISIBILITY TONIGHT. WINDS
ALOFT AT 10KFT MSL: SW-W 10-20 KT.
KBOI...VFR. HIGH DENSITY ALTITUDE DUE TO HEAT THROUGH THIS EVE. SE
WINDS 7-12 KT, BECOMING LIGHT N TO NE AFTER 31/23Z. THEN, NW
AROUND 10-20 KT BEGINNING AROUND 01/05Z. BLOWING DUST IS
POSSIBLE WITH THE NW WIND TONIGHT.
BOI WATCHES/WARNINGS/ADVISORIES
ID...HEAT ADVISORY UNTIL 7 PM MDT THIS EVENING IDZ012-014-016-033.
OR...HEAT ADVISORY UNTIL 7 PM MDT /6 PM PDT/ THIS EVENING
ORZ061>064.
WIND ADVISORY FROM 9 PM MDT /8 PM PDT/ THIS EVENING TO 6 AM
MDT /5 AM PDT/ SUNDAY ORZ064.
WWW.WEATHER.GOV/BOISE
INTERACT WITH US VIA SOCIAL MEDIA:
WWW.FACEBOOK.COM/NWSBOISE
WWW.X.COM/NWSBOISE
SHORT TERM...SP
LONG TERM....SH
AVIATION.....SH
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page