textproduct: Pocatello

KEY MESSAGES

- Cold overnight lows continue into early in the work week. A FREEZE WARNING is in effect for this morning and a FREEZE WATCH is in effect for tonight.

- Weak upper level troughing over the northern Rockies will interact with moisture moving in from the south to generate showers and thunderstorms today. Troughing continues through at least Wednesday night.

- Afternoon slight chance risk of thunderstorms occurs every day through at least Thursday.

DISCUSSION

Issued at 302 AM MDT Mon Apr 27 2026

A trough of low pressure will remain over the region through Wednesday. We'll see isolated to scattered showers with the best chances in the afternoon. Today the best chances extend from then central mountains through the upper Snake River Plain into the eastern highlands. But on Tuesday and Wednesday, the chances shift more into the mountains and highlands as the trough weakens. Additional qpf looks light, perhaps up to 0.25 inches on some of the ridge tops in the central mountains and along the Montana border. This would translate to a couple inches of snow. The biggest impact remains the cold temperatures. Morning low temperatures will likely remain near or below freezing into Tuesday morning at least and probably even Wednesday morning. Then we fall into a gray area of borderline frost/freeze for the rest of the week. It really isn't until Saturday morning when we are reasonably "safe" from frost/freeze in our lower elevation communities. On the high temperatures side of things, temps will climb into the 60s by midweek with 70s by end week. The weekend looks mainly dry with another low potentially bringing another round of precipitation late weekend into early next week. Temperatures do not look quite as cold as we seen with this last outbreak. Although we could still see another round of frost/freeze issues.

AVIATION /06Z TAFS THROUGH 06Z TUESDAY/

Issued at 302 AM MDT Mon Apr 27 2026

Dealing with some MVFR ceilings which could affect IDA and DIJ this morning. This should break up this morning. Expect scattered snow showers this afternoon possibly affecting these same sites. At SUN snow showers will be around as well, but probably not affect the site, although only about 80% confident in that statement.

PIH WATCHES/WARNINGS/ADVISORIES

Freeze Warning until 10 AM MDT this morning for IDZ051>055. Freeze Watch from late tonight through Tuesday morning for IDZ051>055.