702
WWUS75 KBOI 131956
NPWBOI
URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE BOISE ID
1256 PM MST TUE JAN 13 2026
IDZ012-ORZ064-141900-
/O.NEW.KBOI.FG.Y.0002.260114T0600Z-260114T1900Z/
/O.CON.KBOI.AS.Y.0001.000000T0000Z-260119T1200Z/
LOWER TREASURE VALLEY-OREGON LOWER TREASURE VALLEY-
INCLUDING THE CITIES OF NYSSA, CALDWELL, NAMPA, AND ONTARIO
1256 PM MST TUE JAN 13 2026 /1156 AM PST TUE JAN 13 2026/
...AIR STAGNATION ADVISORY REMAINS IN EFFECT UNTIL 5 AM MST /4 AM
PST/ MONDAY...
...DENSE FOG ADVISORY IN EFFECT FROM 11 PM MST /10 PM PST/ THIS
EVENING TO NOON MST /11 AM PST/ WEDNESDAY...
* WHAT...FOR THE AIR STAGNATION ADVISORY, 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. FOR THE DENSE FOG ADVISORY, VISIBILITY ONE QUARTER
MILE OR LESS IN DENSE FOG.
* WHERE...LOWER TREASURE VALLEY ZONES.
* WHEN...FOR THE AIR STAGNATION ADVISORY, UNTIL 5 AM MST /4 AM PST/
MONDAY. FOR THE DENSE FOG ADVISORY, FROM 11 PM MST /10 PM PST/
THIS EVENING TO NOON MST /11 AM PST/ WEDNESDAY.
* IMPACTS...POOR AIR QUALITY MAY CAUSE ISSUES FOR PEOPLE WITH
RESPIRATORY PROBLEMS. LOW VISIBILITY COULD MAKE DRIVING CONDITIONS
HAZARDOUS.
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.
IF DRIVING, SLOW DOWN, USE YOUR HEADLIGHTS, AND LEAVE PLENTY OF
DISTANCE AHEAD OF YOU.
IDZ011-013-014-016-028-033-ORZ061>063-141900-
/O.CON.KBOI.AS.Y.0001.000000T0000Z-260119T1200Z/
WEST CENTRAL MOUNTAINS-BOISE MOUNTAINS-UPPER TREASURE VALLEY-
WESTERN MAGIC VALLEY-CAMAS PRAIRIE-UPPER WEISER RIVER-HARNEY
COUNTY-BAKER COUNTY-MALHEUR COUNTY-
INCLUDING THE CITIES OF FRUITVALE, SOLDIER, CUPRUM, DUNNEAN,
VENATOR, PINE, BAKER, HILL CITY, OLA, CRANE, GLENDALE, DIAMOND,
BUCHANAN, INDIAN VALLEY, FAIRFIELD, TWIN FALLS, MCCALL, CORRAL,
SELBY, CASCADE, COUNCIL, ANDERSON DAM, BOISE, MESA, BEAR,
CAMBRIDGE, BIG CREEK, WARM LAKE, NEW PRINCETON, BLAINE, PRAIRIE,
GOODRICH, MALHEUR CITY, AND BURNS
1256 PM MST TUE JAN 13 2026 /1156 AM PST TUE JAN 13 2026/
...AIR STAGNATION ADVISORY REMAINS IN EFFECT UNTIL 5 AM MST /4 AM
PST/ MONDAY...
* 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/ MONDAY.
* 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.
JDS
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