textproduct: Pocatello

KEY MESSAGES

- Red Flag Warnings for the Central Mountains and the Snake River plain/Shoshone region Monday afternoon into early evening due to low relative humidity and breezy winds.

- Very small chance for an isolated (virga) shower or storm Monday afternoon, mainly in the South Hills.

- Wildfire smoke will continue to impact the area on and off for the next few days. Expect decreased air quality at times with an air quality advisory remaining in effect for Custer County.

DISCUSSION

Issued at 146 AM MDT Mon Aug 10 2026

The leading edge of monsoon moisture will be over the southern highlands today. Expect another round of isolated thunderstorms this afternoon there. Otherwise, warm and breezy conditions are likely today with gusts of 20 to 30 mph common across much of the region. Highs today will be in the low to mid 90s for many of our valley communities.

Another round of isolated thunderstorms across the southern highlands is possible Tuesday afternoon. High temps look slightly cooler with more clouds expected across the region. The bigger push of moisture doesn't arrive until Tuesday Night into Wednesday. With a fair amount of clouds around on Wednesday, highs will probably stay in the mid to upper 80s. Although we may have too much clouds for much thunderstorm development.

Thursday looks very active as a trough pushes into the region. Scattered thunderstorms is expected and some of those storms could produce some heavy rainfall. We remain in the southwesterly monsoon flow into Friday. Debatable of how much storm coverage we actually have on Friday with quite a bit of moisture moving through the region. Still, the threat for heavy rain from thunderstorms exists if we can get storms to develop.

AVIATION /12Z TAFS THROUGH 12Z TUESDAY/

Issued at 146 AM MDT Mon Aug 10 2026

Will monitor smoke impacts on visibility today with another push of smoke expected to arrive. This plume doesn't look as strong as previous plumes so expecting visibility to hold above 5SM but there's a 20-30% chance that it could fall into the MVFR category. If that happens, it would be most likely this morning with vertical mixing expected to help diffuse the smoke this afternoon.

FIRE WEATHER

Issued at 146 AM MDT Mon Aug 10 2026

Red flag warnings are in effect for today for parts of the central mountains, Snake River Plain, and eastern Magic Valley where the combination of critical humidity and wind gusts of 20 to 30 mph will produce dangerous fire conditions. Isolated storms are likely across the southern highlands once again this afternoon. Wind gusts look a little less on Tuesday at this time.

AIR QUALITY

Issued at 209 AM MDT Sat Aug 8 2026

An Air Quality Advisory remains in effect for Custer County through Monday afternoon due to air quality expected to remain in the "moderate" to "unhealthy for sensitive groups" categories.

PIH WATCHES/WARNINGS/ADVISORIES

Red Flag Warning from 2 PM this afternoon to 9 PM MDT this evening for IDZ410-425-475-476. Air Quality Alert until 3 PM MDT this afternoon for IDZ068>074.