192
FXUS65 KPIH 281725
AFDPIH
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE POCATELLO ID
1125 AM MDT MON SEP 28 2026
KEY MESSAGES
- SHOWERS EAST OF I-15: A BRIEF ROUND OF SHOWERS AND ISOLATED
THUNDERSTORMS TODAY PRIMARILY ALONG AND EAST OF THE I-15
CORRIDOR, FOCUSING OVER THE EASTERN HIGHLANDS.
- NOTICEABLY COOLER TODAY: SHOWERS EXIT RAPIDLY TODAY WITH
CLEARING SKIES. POST-FRONTAL AIR WILL DROP VALLEY DAYTIME
HIGHS INTO THE 60S—ROUGHLY 10 DEGREES COOLER THAN YESTERDAY'S
READINGS.
- EARLY OCTOBER WARMING TREND: HIGH PRESSURE BUILDS OVER THE
INTERMOUNTAIN WEST STARTING WEDNESDAY, KEEPING THE REMAINDER
OF THE 7-DAY FORECAST COMPLETELY DRY WHILE PUSHING LOWER-
ELEVATION HIGHS INTO THE MID-TO-UPPER 70S BY LATE WEEK.
DISCUSSION
ISSUED AT 243 AM MDT MON SEP 28 2026
UPPER-LEVEL TROUGH WILL CONTINUE SHIFTING EASTWARD TODAY, WITH
SHOWERS AND ISOLATED THUNDER ACROSS EASTERN IDAHO THROUGH THIS
EVENING. EXPECT A 10 DEGREE COOLDOWN FOR MANY LOCATIONS BETWEEN
YESTERDAY'S DAYTIME TEMPERATURES AND TODAY'S, WITH HIGHS ONLY
WARMING INTO THE 50S AND 60S FOR MUCH OF THE FORECAST AREA. MODELS
SUGGEST HIGH PRESSURE BUILDING IN FROM THE WEST BEGINNING TUESDAY,
REMAINING IN CONTROL OF THE PATTERN THROUGH THE END OF THE EXTENDED
TIMEFRAME. THIS WILL MEAN DRY CONDITIONS FOR THE NEXT WEEK AND
GRADUAL WARMING. DAYTIME TEMPERATURES WILL WARM INTO THE LOW TO MID-
70S ACROSS LOW ELEVATIONS BY THURSDAY WITH SOME LOCATIONS LIKELY
REACHING 80 DEGREES BY EARLY NEXT WEEK.
AVIATION /18Z TAFS THROUGH 18Z TUESDAY/
ISSUED AT 1124 AM MDT MON SEP 28 2026
ISOLATED SHOWERS AND THUNDERSTORMS WILL CONTINUE THROUGHOUT THE
FORECAST PERIOD, BUT BEST CHANCE FOR ANYTHING TO ACTUALLY IMPACT A
TERMINAL WILL BE AT DIJ WHERE THE PROB30 REMAINS. ELSEWHERE, THERE
MAY BE SOME VICINITY SHOWERS OR VCTS EVEN, BUT THE PROBABILITY
REMAINS LOW ENOUGH TO KEEP OUT PROB30S FOR THE OTHER SITES.
OTHERWISE, WE DRY OUT OVERNIGHT AND LOOK COMPLETELY DRY FOR TUESDAY.
GIVEN THE PRECIPITATION CHANCES AT DIJ AND COOLER TEMPERATURES
OVERNIGHT, LOOK FOR FEW TO SCT LOW CLOUDS EARLY TUESDAY, BUT AT THIS
POINT VFR CONDITIONS ARE EXPECTED TO PREVAIL.
FIRE WEATHER
ISSUED AT 243 AM MDT MON SEP 28 2026
UPPER-LEVEL TROUGH WILL CONTINUE SHIFTING EASTWARD TODAY, WITH
SHOWERS AND ISOLATED THUNDER ACROSS EASTERN IDAHO THROUGH THIS
EVENING. ACTIVITY WILL FAVOR THE EAST AND SOUTHEAST HIGHLANDS.
EXPECT A 10 DEGREE COOLDOWN FOR MANY LOCATIONS TODAY, WITH HIGHS
ONLY WARMING INTO THE 50S AND 60S FOR MUCH OF THE AREA. A WEAK RIDGE
WILL BUILD IN FROM THE WEST BEGINNING TUESDAY AND REMAIN IN CONTROL
OF THE PATTERN THROUGH THE BEGINNING OF NEXT WEEK. THIS WILL MEAN
DRY CONDITIONS AND GRADUAL WARMING. DAYTIME TEMPERATURES WILL WARM
INTO THE LOW TO MID-70S ACROSS LOW ELEVATIONS BY THURSDAY WITH SOME
LOCATIONS LIKELY REACHING 80 DEGREES BY EARLY NEXT WEEK.
PIH WATCHES/WARNINGS/ADVISORIES
NONE.
DISCUSSION...CROPP
AVIATION...AMM
FIRE WEATHER...CROPP
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page