197  
WWUS75 KBOI 092015  
NPWBOI  
 
URGENT - WEATHER MESSAGE  
NATIONAL WEATHER SERVICE BOISE ID  
115 PM MST THU JAN 9 2025  
 
IDZ011>015-028-029-033-ORZ061>064-101800-  
/O.CON.KBOI.AS.Y.0001.000000T0000Z-250110T1800Z/  
WEST CENTRAL MOUNTAINS-LOWER TREASURE VALLEY ID-BOISE MOUNTAINS-  
UPPER TREASURE VALLEY-SOUTHWEST HIGHLANDS-CAMAS PRAIRIE-OWYHEE  
MOUNTAINS-UPPER WEISER RIVER-HARNEY COUNTY-BAKER COUNTY-MALHEUR  
COUNTY-OREGON LOWER TREASURE VALLEY-  
INCLUDING THE CITIES OF MCCALL, CASCADE, DIAMOND, GRASMERE,  
BOISE, BURNS, ONTARIO, PINE, FAIRFIELD, COUNCIL, NAMPA, BUCHANAN,  
DUNNEAN, RIDDLE, GARDEN VALLEY, CAMBRIDGE, NEW PRINCETON,  
MIDVALE, MOUNTAIN HOME, VENATOR, CRANE, LOWMAN, BAKER, MURPHY HOT  
SPRINGS, NYSSA, CALDWELL, SILVER CITY, MALHEUR CITY, AND IDAHO  
CITY  
115 PM MST THU JAN 9 2025 /1215 PM PST THU JAN 9 2025/  
 
...AIR STAGNATION ADVISORY REMAINS IN EFFECT UNTIL 11 AM MST /10 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 SOUTHWEST AND WEST CENTRAL IDAHO AND NORTHEAST  
AND SOUTHEAST OREGON.  
 
* WHEN...UNTIL 11 AM MST /10 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.  
 

 
 

 
 
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