298
FXUS65 KPIH 040434
AFDPIH
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE POCATELLO ID
1034 PM MDT MON AUG 3 2026
KEY MESSAGES
- SMOKE WILL CONTINUE TO BE IN THE AREA IN VARYING DEGREES FOR
THE NEXT FEW DAYS. WITH NORTHWEST FLOW ALOFT BY LATE TOMORROW,
MORE SIGNIFICANT SMOKE COULD WORK ITS WAY BACK INTO THE AREA.
- NO PRECIPITATION EXPECTED THROUGH THIS WEEK WITH COOLER
TEMPERATURES THROUGH WEDNESDAY.
- TEMPERATURES WARMING BACK UP TO THE UPPER 80S TO MID 90S BY
THE END OF THE WEEK AND THROUGH THE WEEKEND. MAY SEE
TEMPERATURES AROUND 100 BY THE WEEKEND IN LOWER ELEVATIONS.
DISCUSSION
ISSUED AT 103 PM MDT MON AUG 3 2026
MAIN IMPACTS IN THE SHORT TERM WILL BE THE PRESENCE OF SMOKE AT
TIMES WITH NORTHWEST FLOW TONIGHT AND TUESDAY. AN AIR QUALITY
ALERT REMAINS IN EFFECT FOR POWER, BANNOCK, BINGHAM, ONEIDA AND
CARIBOU COUNTIES DUE TO THE WILDFIRE SMOKE. COOLER TEMPERATURES
WILL CONTINUE THROUGH TUESDAY WITH LOW ELEVATIONS REMAINING IN
THE 80S AND MOUNTAINS IN THE 60S AND 70S. WILL SEE SIGNIFICANT
WARMING WEDNESDAY AND CONTINUING THROUGH THE WEEK INTO THE
WEEKEND. MAY SEE LOW ELEVATION HIGH TEMPERATURES AROUND 100 ONCE
AGAIN BY THE WEEKEND. SO THE COOL DOWN EARLY THIS WEEK WILL BE
VERY SHORT LIVED. NO PRECIPITATION IS FORECAST THROUGH NEXT
MONDAY IN THE FORECAST GRIDS.
AVIATION /06Z TAFS THROUGH 06Z WEDNESDAY/
ISSUED AT 1020 PM MDT MON AUG 3 2026
EXPECT CLEAR SKIES THE NEXT 24 HOURS. HOWEVER, SMOKE WILL BE
THE BIGGEST IMPACT, LIKELY DROPPING VISIBILITY IN THE EARLY
MORNING TO LATE MORNING. DIJ WILL LIKELY HAVE LITTLE VISIBILITY
IMPACTS. IDA WILL LIKELY ONLY HAVE 6SM IN FU BUT COULD GO AS LOW
AS 5SM. PIH, SUN, AND, PARTICULARLY, BYI HAVE THE BEST CHANCES
TO HAVE VISIBILITY DROP AS LOW AS 3SM. WINDS WILL BE LIGHT
OVERALL BUT COULD GUST TO 15KT IN THE AFTERNOON TOMORROW,
ESPECIALLY FOR BYI AND PIH. EXPECT VISIBILITY IMPROVEMENT BY
THE AFTERNOON INTO EARLY EVENING. HOWEVER, THE HRRR SMOKE MODEL
SUGGEST VISIBILITY COULD REMAIN LOWER IN THE AFTERNOON AND
EVENING TOMORROW, ESPECIALLY FOR BYI, SUN, AND, TO A LESSER
DEGREE, PIH.
FIRE WEATHER
ISSUED AT 1202 PM MDT MON AUG 3 2026
HIGH PRESSURE LOCKED IN OVERHEAD WITH UPPER LEVEL WEST TO
NORTHWEST FLOW MEANS A SLOW WARM UP, AT LEAST UNTIL A SOUTHERLY
COMPONENT DEVELOPS. FOR THE NEXT TWO DAYS, THE GRADUAL WARMING
CONTINUES, KEEPING AFTERNOON HUMIDITY DROPPING BELOW 10 PERCENT
IN A NUMBER OF PLACES. LUCKILY, HIGH PRESSURE LIKE THIS KEEPS
WIND LIGHT AND WHILE SOME OF THE SOUTHWESTERN ZONES WILL BE
CLOSE TO RED FLAG CONDITIONS, NOT EXPECTING THE WIND TO BE
STRONG ENOUGH. ON THU, THE UPPER LEVEL RIDGE BUILDS MORE INTO
SOUTHERN IDAHO AND TEMPERATURES SPIKE UP 7 DEG F OR SO; MANY LOW
ELEVATIONS WILL APPROACH THE CENTURY MARK.
ATMOSPHERIC STABILITY BEHIND THE WEEKEND FRONT IS IMPROVED AND
SO EXTREME FIRE GROWTH IF A FIRE GETS ESTABLISHED WILL BE MORE
DEPENDENT ON FUEL CONDITIONS. EXPECT MORE INSTABILITY FROM DAY
TO DAY AS THE MIXING HEIGHT INCREASES.
WIND WILL INCREASE ON FRIDAY AND WOULD BE THE NEXT OPPORTUNITY
FOR SOME WIDESPREAD RED FLAG CONDITIONS AND WILL HAVE TO BE
MONITORED.
AIR QUALITY
ISSUED AT 103 PM MDT MON AUG 3 2026
AN AIR QUALITY ALERT CONTINUES FOR CARIBOU, ONEIDA, BINGHAM, BANNOCK
AND POWER COUNTIES THROUGH TUESDAY DUE TO IMPACTS FROM WILDFIRE
SMOKE. AIR QUALITY IS EXPECTED TO REMAIN "UNHEALTHY FOR SENSITIVE
GROUPS" THROUGH WEDNESDAY.
PIH WATCHES/WARNINGS/ADVISORIES
AIR QUALITY ALERT UNTIL 4 PM MDT WEDNESDAY FOR IDZ052-054-055-
057>059-062-063.
DISCUSSION...GK
AVIATION...TW
FIRE WEATHER...MESSICK
AIR QUALITY...GK
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