620
WWUS75 KPIH 190116
NPWPIH
URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE POCATELLO ID
616 PM MST SUN JAN 18 2026
IDZ054-191315-
/O.NEW.KPIH.FG.Y.0004.260119T0116Z-260119T1900Z/
/O.CON.KPIH.AS.Y.0001.000000T0000Z-260120T1900Z/
LOWER SNAKE RIVER PLAIN-
INCLUDING THE CITIES OF POCATELLO, FORT HALL, BLACKFOOT, AMERICAN
FALLS, AND SHELLEY
616 PM MST SUN JAN 18 2026
..DENSE FOG ADVISORY IN EFFECT UNTIL NOON MST MONDAY
...AIR STAGNATION ADVISORY REMAINS IN EFFECT UNTIL NOON MST
TUESDAY...
* WHAT...FOR THE DENSE FOG ADVISORY, VISIBILITY ONE QUARTER MILE OR
LESS IN DENSE FOG. FOR THE AIR STAGNATION ADVISORY, POOR AIR
QUALITY WILL CONTINUE. THIS IS DUE TO AN INVERSION AND STAGNANT
AIR CONDITIONS NEAR THE SURFACE THAT WILL CONTINUE TO TRAP
POLLUTANTS.
* WHERE...LOWER SNAKE RIVER PLAIN.
* WHEN...FOR THE DENSE FOG ADVISORY, UNTIL NOON MST MONDAY. FOR THE
AIR STAGNATION ADVISORY, UNTIL NOON MST TUESDAY.
* IMPACTS...PERIODS OF AIR STAGNATION CAN LEAD TO THE BUILDUP OF
POLLUTANTS NEAR THE SURFACE. LOW VISIBILITY COULD MAKE DRIVING
CONDITIONS HAZARDOUS.
IDAHO TRANSPORTATION DEPARTMENT WEATHER STATIONS ALONG INTERSTATES
84 AND 86 INDICATE VISIBILITY DOES FALL TO AS LITTLE AS 500 FEET,
MAKING NORMAL HIGH WAY SPEEDS DANGEROUS.
* ADDITIONAL DETAILS...THE FOG HAS MOVED INTO THE AMERICAN FALLS
AREA ALREADY, AND SHOULD SPREAD EASTWARD TO THE POCATELLO AREA
DURING THE EVENING TONIGHT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
IF DRIVING, SLOW DOWN, USE YOUR HEADLIGHTS, AND LEAVE PLENTY OF
DISTANCE AHEAD OF YOU.
IDZ051-055-191315-
/O.NEW.KPIH.FG.Y.0004.260119T0116Z-260119T1900Z/
SHOSHONE/LAVA BEDS-EASTERN MAGIC VALLEY-
INCLUDING THE CITIES OF HEYBURN, RICHFIELD, OAKLEY, CAREY,
SHOSHONE, RUPERT, AND BURLEY
616 PM MST SUN JAN 18 2026
..DENSE FOG ADVISORY IN EFFECT UNTIL NOON MST MONDAY
* WHAT...VISIBILITY ONE QUARTER MILE OR LESS IN DENSE FOG. IDAHO
TRANSPORTATION DEPARTMENT WEATHER STATIONS ALONG INTERSTATES 84
AND 86 INDICATE VISIBILITY DOES FALL TO AS LITTLE AS 500 FEET,
MAKING NORMAL HIGHWAY SPEEDS DANGEROUS.
* WHERE...EASTERN MAGIC VALLEY AND SHOSHONE/LAVA BEDS.
* WHEN...UNTIL NOON MST MONDAY.
* IMPACTS...LOW VISIBILITY COULD MAKE DRIVING CONDITIONS HAZARDOUS.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
IF DRIVING, SLOW DOWN, USE YOUR HEADLIGHTS, AND LEAVE PLENTY OF
DISTANCE AHEAD OF YOU.
IDZ059-191315-
/O.CON.KPIH.AS.Y.0001.000000T0000Z-260120T1900Z/
FRANKLIN/EASTERN ONEIDA REGION-
INCLUDING THE CITIES OF THATCHER, PRESTON, AND MALAD
616 PM MST SUN JAN 18 2026
...AIR STAGNATION ADVISORY REMAINS IN EFFECT UNTIL NOON MST
TUESDAY...
* WHAT...POOR AIR QUALITY WILL CONTINUE. THIS IS DUE TO AN INVERSION
AND STAGNANT AIR CONDITIONS NEAR THE SURFACE THAT WILL CONTINUE TO
TRAP POLLUTANTS.
* WHERE...FRANKLIN/EASTERN ONEIDA REGION.
* WHEN...UNTIL NOON MST TUESDAY.
* IMPACTS...PERIODS OF AIR STAGNATION CAN LEAD TO THE BUILDUP OF
POLLUTANTS NEAR THE SURFACE.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
IF POSSIBLE, REDUCE OR ELIMINATE ACTIVITIES THAT CONTRIBUTE TO AIR
POLLUTION, SUCH AS OUTDOOR BURNING, AND THE USE OF RESIDENTIAL WOOD
BURNING DEVICES. REDUCE VEHICLE TRIPS AND VEHICLE IDLING AS MUCH AS
POSSIBLE. CHECK WITH LOCAL AGENCIES FOR POSSIBLE RESTRICTIONS IN
YOUR AREA.
VISIT WEATHER.GOV/POCATELLO FOR MORE INFORMATION.
MESSICK
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