154
WWUS75 KBOI 212023
NPWBOI
URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE BOISE ID
123 PM MST WED JAN 21 2026
IDZ011>014-016-028-033-ORZ061>064-221400-
/O.CON.KBOI.AS.Y.0001.000000T0000Z-260123T1200Z/
WEST CENTRAL MOUNTAINS-LOWER TREASURE VALLEY-BOISE MOUNTAINS-
UPPER TREASURE VALLEY-WESTERN MAGIC VALLEY-CAMAS PRAIRIE-UPPER
WEISER RIVER-HARNEY COUNTY-BAKER COUNTY-MALHEUR COUNTY-OREGON
LOWER TREASURE VALLEY-
INCLUDING THE CITIES OF CAMBRIDGE, BURNS, NEW PRINCETON, COUNCIL,
BAKER, ANDERSON DAM, GOODRICH, BUCHANAN, CRANE, DIAMOND,
GLENDALE, PRAIRIE, MESA, OLA, MALHEUR CITY, CALDWELL, BIG CREEK,
FAIRFIELD, FRUITVALE, BOISE, ONTARIO, CASCADE, INDIAN VALLEY,
TWIN FALLS, BLAINE, DUNNEAN, BEAR, WARM LAKE, HILL CITY, CUPRUM,
NYSSA, CORRAL, SOLDIER, MCCALL, VENATOR, NAMPA, SELBY, AND PINE
123 PM MST WED JAN 21 2026 /1223 PM PST WED JAN 21 2026/
...AIR STAGNATION ADVISORY REMAINS IN EFFECT UNTIL 5 AM MST /4 AM
PST/ FRIDAY...
* 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 SOUTH CENTRAL AND SOUTHWEST IDAHO AND
NORTHEAST AND SOUTHEAST OREGON.
* WHEN...UNTIL 5 AM MST /4 AM PST/ FRIDAY.
* 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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