textproduct: Pocatello

KEY MESSAGES

- Rain and very high elevation snow showers today.

- Above average temperatures through mid-week.

- Next system arrives mid-week with unsettled conditions for the remainder of the week.

DISCUSSION

Issued at 131 AM MST Mon Mar 2 2026

Upper trough will work through the region today, bringing widespread light to moderate rain and light snow above 7,000 feet. The HREF precipitation forecast favors the extreme Southeast corner of Idaho, including the cities of Dayton and Montpelier and further south and east into UT and WY, where QPF ranges half an inch to 0.75" over 24 hours. Up to 4 inches of snow accumulation are forecast above 7,000 feet with 2 to 3 inches forecast for Galena Summit, Banner Summit, and Emigration Pass. Minor travel impacts are expected along other mountain passes, where little snow accumulation is expected. Daytime temperatures will run several degrees above normal with many low elevation areas warming into the upper 40s to low 50s. Behind the departing trough, a transitory ridge will shift through on Tuesday, allowing daytime temperatures to warm by several degrees. Clouds will increase again beginning early Wednesday as the next trough moves onshore and shifts through the Great Basin mid- to late week. The current forecast maintains slightly cooler temperatures, closer to seasonal norms, for the second half of the week. Snow will accumulate above 5,000 feet, generally 2" to 6" with closer to 8" along the highest elevations. Slight changes to the temperature and snow level forecasts could mean light snow reaching valley floors during the overnight hours. Ensemble solutions begin to diverge heading into the weekend, with the National Blend forecast favoring strengthening high pressure overhead and thus a warming trend through late weekend.

AVIATION /06Z TAFS THROUGH 06Z TUESDAY/

Issued at 1040 PM MST Sun Mar 1 2026

The next wave of moisture is just starting to move up from the southwest with showers starting to hit BYI. Ample moisture moving in has brought MVFR/IFR VIS from fog and mist to PIH and IDA and LIFR VIS to DIJ ahead of these showers. Models show light moisture moving in to all sites by 12 Z for all sites, except KSUN, bringing MVFR/IFR CIGS. For SUN models show a 50 to 60% chance of MVFR CIGS by mid to late morning with light showers for 2 to 4 hours. Models earlier where showing showers all morning and afternoon with MVFR CIGS. Have brought VFR CIGS and VIS for KBYI by around 18z and 22z for PIH and early evening for IDA. Models show slight improvement for DIJ by mid afternoon tomorrow. However, MVFR/IFR conditions will likely continue for DIJ all day tomorrow continuing into tomorrow evening into Tuesday morning.

PIH WATCHES/WARNINGS/ADVISORIES

None.