textproduct: Pocatello

KEY MESSAGES

- Burn Scar Flash Flood Risk: Deep monsoonal moisture across Eastern Idaho will support localized heavy rainfall and flash flooding today and Saturday. Flash Flood Watches remain active for the Wapiti burn scar today.

- Gradual Warm-Up and Mid-Week Drying: Unseasonably cool temperatures (highs in the 70s) will slowly moderate into early next week. Isolated hit and miss storms expected through midweek before drier, seasonal conditions settle in mid to late week.

DISCUSSION

Issued at 151 AM MDT Sat Aug 15 2026

Monsoon moisture remains entrenched. Another shortwave will pass through the area today. With the better support across the central mountains, they should see the best coverage today. Isolated to scattered coverage is expected elsewhere. Once again, the potential for heavy rain exists because of the monsoon. The threat appears less today across the Big Rock area, but not zero. Better chances across the Wapiti once again where the Flash Flood Watch remains in effect.

The monsoon moisture will hang around until midweek. Although the systems between Sunday and then look relatively weak. Still heating of the day will be sufficient to trigger isolated thunderstorms as the high res models are now suggesting. Models show the ridge amplifying over the Intermountain West later in the week. Although its uncertain if we get another monsoon push associated with it. The ridge axis may be a little too directly overhead to allow for much thunderstorm development.

Temps will remain below normal through midweek. But should return to near normal by late week.

AVIATION /12Z TAFS THROUGH 12Z SUNDAY/

Issued at 151 AM MDT Sat Aug 15 2026

Main concern is thunderstorm chances once again today. PROB30s for gusty outflow winds and storms reducing visibilities at all taf sites this afternoon.

FIRE WEATHER

Issued at 151 AM MDT Sat Aug 15 2026

Isolated to scattered thunderstorms will continue through midweek across much of the area. Gusty outflow winds and locally heavy rains will remain possible. Chances for wetting rains are high today across the central mountains but not so much elsewhere. Widespread wetting rains diminish after today areawide.

PIH WATCHES/WARNINGS/ADVISORIES

None.