674
FXUS65 KPIH 070016
AFDPIH
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE POCATELLO ID
616 PM MDT THU AUG 6 2026
KEY MESSAGES
- WILDFIRE SMOKE CONTINUES TO IMPACT THE AREA ON AND OFF FOR THE
NEXT FEW DAYS. EXPECT DECREASED AIR QUALITY AT TIMES WITH AIR
QUALITY ADVISORIES IN EFFECT.
- WARMING TREND HAS BEGUN WITH HIGHS APPROACHING 100 DEGREES IN
THE LOWER ELEVATIONS FRIDAY THROUGH THE WEEKEND. A HEAT
ADVISORY IS IN EFFECT FOR THE SOUTH HILLS, RAFT RIVER REGION,
AND THE FRANKLIN/EASTERN ONEIDA REGION FRIDAY AFTERNOON
THROUGH LATE SATURDAY.
- NO PRECIPITATION IN THE FORECAST FOR THIS WEEK, BUT INCREASING
POTENTIAL FOR MONSOON MOISTURE TO RETURN NEXT WEEK.
DISCUSSION
ISSUED AT 1246 PM MDT THU AUG 6 2026
DAYTIME TEMPERATURES WILL WARM BY 5 OR MORE DEGREES OVER YESTERDAY'S
HIGHS AS THE RIDGE AXIS SHIFTS DIRECTLY OVERHEAD. A HEAT ADVISORY
HAS BEEN ISSUED FOR THE SOUTH HILLS, RAFT RIVER REGION, AND THE
FRANKLIN/EASTERN ONEIDA REGION FROM 1 PM FRIDAY THROUGH 11 PM
SATURDAY. WIDESPREAD TEMPERATURES OF 95 TO 100 DEGREES ARE
ANTICIPATED ACROSS THE ADVISED AREAS WITH OVERNIGHT LOWS ONLY
DROPPING INTO THE UPPER-60S. OUTSIDE OF THESE AREAS, TEMPERATURES
WILL STILL WARM INTO THE UPPER-90S AND EVEN TRIPLE DIGITS ACROSS THE
EASTERN MAGIC VALLEY, BUT OVERNIGHT TEMPERATURES WILL PROVIDE A TAD
MORE RELIEF AS LOWS WILL MANAGE TO DROP INTO THE LOWER 60S.
ADDITIONALLY, A LIMITING FACTOR TO THE FORECAST WARMTH WILL BE THE
SMOKE AND HOW MUCH IT LIMITS OUR DAYTIME HEATING. MODELS SHOW NEAR-
SURFACE SMOKE INCREASING FRIDAY, ESPECIALLY ACROSS THE EASTERN MAGIC
VALLEY AND AREAS FURTHER NORTH. TEMPERATURES ON SATURDAY WILL RUN
FAIRLY SIMILAR, ALTHOUGH BOTH DAYTIME AND OVERNIGHT TEMPERATURES
WILL LIKELY COOL BY A FEW DEGREES AS THE RIDGE OF HIGH PRESSURE IS
VERY SLIGHTLY FLATTENED. AS FOR WINDS, AFTERNOON GUSTS TODAY WILL
REACH AROUND 20 TO 25 MPH AND WILL INCREASE HEADING FURTHER INTO THE
WEEKEND, WITH GUSTS REACHING 25 TO 30 MPH IN MORE AREAS. HEADING
INTO EARLY NEXT WEEK, A PACIFIC TROUGH ALONG THE CA COAST WILL OPEN
THE DOOR FOR MONSOON MOISTURE TO LIFT NORTHWARD BY MIDDLE OF NEXT
WEEK.
AVIATION /00Z TAFS THROUGH 00Z SATURDAY/
ISSUED AT 544 PM MDT THU AUG 6 2026
VFR CONDITIONS ARE EXPECTED OVERALL THROUGH THE NEXT 24 HOURS.
WILDFIRE SMOKE REMAINS IN THE ATMOSPHERE. WITH A WARMER DAY
TODAY, MODELS SHOW SLIGHTLY MORE SMOKE TOMORROW MORNING THAN
YESTERDAY MORNING. THUS, HAVE PUT IN A TEMPO FOR 5SM FROM SMOKE
FOR BYI, PIH, AND IDA TOMORROW MORNING BEFORE THE INVERSION
BREAKS. BYI HAS THE BEST CHANCE OF SEEING LOWER VISIBILITY AS A
RESULT OF BEING CLOSER AND IN THE PATH FROM SMOKE COMING FROM
SOUTHWEST IDAHO. BYI COULD DROP SLIGHTLY LOWER THAN 5SM TOMORROW
MORNING. LOOK FOR SLIGHT SMOKE IMPACTS FOR SUN WITH UPSLOPE
FLOW IN THE AFTERNOON TOMORROW. EXPECT WINDS TO REMAIN LIGHT
THROUGH THE EVENING AND INTO TOMORROW MORNING BEFORE INCREASING
TO 10 TO 15 KTS IN THE AFTERNOON TOMORROW.
FIRE WEATHER
ISSUED AT 1231 PM MDT THU AUG 6 2026
HIGH PRESSURE WILL KEEP THINGS EXTREMELY DRY, INCLUDING POOR
RECOVERY AT NIGHT FOR MOST LOCATIONS. TEMPERATURES WILL CONTINUE
WARMING ANOTHER DAY, TEMPERED BY THE AMOUNT OF SMOKE MOVING
THROUGH THE MIDDLE AND HIGH LEVELS OF THE ATMOSPHERE FROM
WILDFIRES IN THE PACIFIC NORTHWEST. AS THE EDGE OF A SLOWLY
MOVING HIGH GETS CLOSER, THE LIGHT WIND WILL SLOWLY INCREASE,
WITH FRI AFTERNOON EXHIBITING WIND GUSTS RISING TO JUST BELOW
CRITICAL THRESHOLDS IN THE SAWTOOTH AND SALMON-CHALLIS NFS. SAT
AFTERNOON WILL SEE GREATER COVERAGE OF THOSE TWO AREAS AND THE
EASTERN MAGIC VALLEY AND OTHER BLM LANDS WITH GUSTS TO 30 MPH.
SO EXPECT SOME FIRE WEATHER WATCHES OR RED FLAG WARNINGS FOR
SAT. AS OF NOW, EASTERN IDAHO APPEARS TO HOLD OFF ON THE GUSTY
WIND UNTIL SUN, WHILE THE GUSTY CONTINUES FOR CENTRAL IDAHO.
GUSTS TO 30 MPH DO DISAPPEAR FROM THE EASTERN MAGIC VALLEY AND
DEVELOP IN LIMITED AREAS IN THE SNAKE RIVER PLAIN/TETON VALLEY.
BY MID-WEEK NEXT WEEK, SHOWERS AND THUNDERSTORMS SHOULD RETURN
AS THE HIGH SHIFTS FAR ENOUGH EASTWARD TO OPEN THE DOOR TO THE
REMNANTS OF THE SOUTHWESTERN MONSOON TO CREEP INTO THE REGION.
AIR QUALITY
ISSUED AT 1246 PM MDT THU AUG 6 2026
AN AIR QUALITY ADVISORY IS NOW IN EFFECT THROUGH FRIDAY AFTERNOON
FOR BONNEVILLE, BUTTE, CLARK, CUSTER, FREMONT, JEFFERSON, MADISON,
AND TETON COUNTIES DUE TO AIR QUALITY BEING "UNHEALTHY FOR SENSITIVE
GROUPS." ELSEWHERE, ALERTS HAVE BEEN LIFTED DUE TO IMPROVEMENTS TO
"MODERATE" AIR QUALITY.
PIH WATCHES/WARNINGS/ADVISORIES
AIR QUALITY ALERT UNTIL 3 PM MDT FRIDAY FOR IDZ052-053-062>074.
HEAT ADVISORY FROM 1 PM FRIDAY TO 11 PM MDT SATURDAY FOR
IDZ056-057-059.
DISCUSSION...CROPP
AVIATION...TW
FIRE WEATHER...MESSICK
AIR QUALITY...CROPP
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