textproduct: Pocatello

KEY MESSAGES

- Showers and thunderstorms continue through Saturday

- Hail, gusty winds, and locally heavy rains are possible with storms through Saturday

- Cooler temperatures are expected through Saturday before slowly warming up next week

DISCUSSION

Issued at 150 AM MDT Fri Sep 18 2026

Low pressure over eastern Oregon will slowly march our way over the next couple of days. Expect another day of occasional showers and thunderstorms. The high resolution models are indicating that storms this afternoon could be as intense as what we experienced on Thursday. With that said, a solid area of marginal risk for severe thunderstorms exists over east Idaho today with hail and wind as the main threats. Given the heavy rain that we saw today, will issue a flood watch for the Big Rock burn scar near Heise. On Saturday the low will be overhead and temperatures will be noticeably colder with highs in the low to mid 60s. The cooler temps combined with quite a bit of cloud cover around should limit thunderstorm intensity. The low will move east Saturday night into Sunday bringing an end to our rain chances. Additional rainfall amounts from 12z Friday through 06z Sunday range from just a few hundredths across the Magic Valley to around 0.50 inches across the eastern highlands. Of course, rainfall amounts are highly dependent on where the heavier thunderstorms occur with locally heavy downpours likely today.

After this system passes, looks like we will see several days of dry weather with the next low pressure system expected to pass to our south early next week. Overnight lows continue to look warm enough that widespread frost potential will not be a problem across the Snake Plain and Magic Valley. Although some patchy frost could be possible Sunday and Monday mornings across the upper Snake Plain.

AVIATION /12Z TAFS THROUGH 12Z SATURDAY/

Issued at 150 AM MDT Fri Sep 18 2026

Another day of occasional showers and storms is expected today. Although storms will be possible just about anytime, the most likely time that storms with gusty outflows would impact TAF sites is this afternoon and evening.

FIRE WEATHER

Issued at 150 AM MDT Fri Sep 18 2026

Occasional showers and thunderstorms are expected once again today. Chances for wetting rains look low across the Magic Valley but are fairly high elsewhere. Gusty outflow winds are likely with these storms.

PIH WATCHES/WARNINGS/ADVISORIES