textproduct: Pocatello

KEY MESSAGES

- Isolated thunderstorm threat each afternoon and evening over entire forecast area today and Thursday, then portions of the area through the end of the forecast period. - Little change to temperature or humidity through Thursday afternoon, then a cool-down for Friday and more Saturday.

- Windy Thursday, Friday, and Saturday afternoons.

DISCUSSION

Issued at 137 AM MDT Wed Aug 26 2026

Upper level ridge axis will be pushed east into the Great Plains due to a trough moving onshore in southern Canada on Thursday. This trough moving northeastward has already increased the wind aloft, but will do even more on Thursday, with the stronger wind reaching the surface. The strong wind lets up slightly Fri, but then returns Sat.

Temperatures are still inching upward through Thu afternoon, but the trough and its associated surface cold front will bring temperatures down for Fri and more on Sat.

Isolated thunderstorms continue to be a problem with southwest airflow, but the more westerly airflow behind the trough on Sat and Sun will start a drying out with western portions of the forecast area out of the thunderstorm threat on some of those days.

Temperatures go back to little change after Sat.

AVIATION /12Z TAFS THROUGH 12Z THURSDAY/

Issued at 458 AM MDT Wed Aug 26 2026

TSRA coverage continues to diminish. Expect just dry TS at KPIH and KDIJ, neither TS nor SHRA at KIDA, and KSUN and KBYI having TS/SHRA. No CIGs except if a direct strike from a TS. Do not expect reduction in VSBY. Wind continues very light outside of TSRA outflow.

FIRE WEATHER

Issued at 137 AM MDT Wed Aug 26 2026

An approaching trough will arrive Thu night and continue through Fri night as it slowly moves through southern Canada. A weak cold front will pass through, keeping up the thunderstorm activity, increasing the wind, and by Fri cooling temperatures and raising humidity. More cooling occurs from Fri to Sat, along with the thunderstorm risk mostly staying in the MT and WY border regions. The gusty wind returns on Fri and even stronger on Sat. However, the humidity is staying mainly above 20 percent in the afternoons, with only a few areas getting into the teens at all. Isolated thunderstorms return to everywhere by Sun and continues that way through the end of the forecast period.

PIH WATCHES/WARNINGS/ADVISORIES

None.