736
WWUS75 KBOI 311130
NPWBOI
URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE BOISE ID
430 AM MST WED DEC 31 2025
IDZ011>014-028-033-ORZ061-063-064-312200-
/O.CON.KBOI.AS.Y.0005.000000T0000Z-260103T1500Z/
WEST CENTRAL MOUNTAINS-LOWER TREASURE VALLEY-BOISE MOUNTAINS-
UPPER TREASURE VALLEY-CAMAS PRAIRIE-UPPER WEISER RIVER-HARNEY
COUNTY-MALHEUR COUNTY-OREGON LOWER TREASURE VALLEY-
INCLUDING THE CITIES OF OLA, MCCALL, COUNCIL, WARM LAKE, HILL
CITY, FRUITVALE, MALHEUR CITY, PINE, FAIRFIELD, CORRAL, BOISE,
MESA, CALDWELL, DIAMOND, ONTARIO, CUPRUM, BUCHANAN, GOODRICH, BIG
CREEK, CRANE, CAMBRIDGE, BLAINE, ANDERSON DAM, VENATOR, NYSSA,
NEW PRINCETON, CASCADE, PRAIRIE, INDIAN VALLEY, BEAR, SELBY,
SOLDIER, DUNNEAN, GLENDALE, BURNS, AND NAMPA
430 AM MST WED DEC 31 2025 /330 AM PST WED DEC 31 2025/
...AIR STAGNATION ADVISORY REMAINS IN EFFECT UNTIL 8 AM MST /7 AM
PST/ SATURDAY...
* WHAT...AN EXTENDED PERIOD OF STAGNANT AIR, WITH LIGHT WINDS AND
LITTLE VERTICAL MIXING. THIS IS DUE TO AN INVERSION NEAR THE
SURFACE THAT WILL CONTINUE TO TRAP POLLUTANTS.
* WHERE...PORTIONS OF SOUTHWEST IDAHO AND SOUTHEAST OREGON.
* WHEN...UNTIL 8 AM MST /7 AM PST/ SATURDAY.
* IMPACTS...POOR AIR QUALITY MAY CAUSE ISSUES FOR PEOPLE WITH
RESPIRATORY PROBLEMS.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
PERSONS WITH RESPIRATORY ILLNESS SHOULD FOLLOW THEIR PHYSICIANS
ADVICE FOR DEALING WITH HIGH LEVELS OF AIR POLLUTION DURING PERIODS
OF STAGNANT AIR.
LC
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