textproduct: Pocatello

KEY MESSAGES

- Isolated showers linger today with passing shortwave.

- Afternoon highs cooler than yesterday, in the 40s to low 50s.

- Looking like a wet, chilly Halloween/weekend.

DISCUSSION

Issued at 302 AM MDT Tue Oct 27 2026

The bulk of our precipitation from the cold front passing through is moving farther into Wyoming early this morning, but a bit does linger in the higher elevations of the upper Snake River Plain and Eastern Highlands. We even had a convective line of rain/snow mix move through the Monida Pass area with some lightning this morning. But as this trough and cold front leave, we still have another weak shortwave passing through later today. This won't bring another well- organized line through Eastern Idaho, but it will keep isolated precipitation chances around, especially for this evening. Overall, additional QPF today will stay below a tenth of an inch. Behind the cold front, highs today will be in the 40s to low 50s for most. Winds remain breezy in the upper Snake River Plain today with gusts around 20 to 30 mph. Wednesday will be nearly a repeat of today, though drier as we briefly return to southwesterly flow aloft ahead of the next system as temperatures warm into the upper 40s to mid 50s on Thursday afternoon.

An area of low pressure off of the coast of the PNW brings moisture into Eastern Idaho for the weekend, but will begin to bring precipitation back to us as early as overnight Thursday into Friday. Deep troughing over much of the West pulls Pacific moisture into Idaho on Friday, Saturday, and Sunday. This will keep our highs in the 40s and 50s on Saturday, and 40s for Sunday and Monday. We will continue to see how precipitation totals change over the next several model runs, so stay tuned for those amounts as we get a little closer to it.

AVIATION /12Z TAFS THROUGH 12Z WEDNESDAY/

Issued at 521 AM MDT Tue Oct 27 2026

Trough and cold front are exiting the area this morning, but low clouds remain at around DIJ and near IDA. So, while all sites are VFR at the moment, there still is a 20 percent chance of MVFR CIGs at DIJ over the next several hours. That chance is a bit lower, likely closer to 10 percent, at IDA. While the organized moisture is gone, a weak shortwave passing through today will keep around some isolated shower chances, especially after 00Z this evening, so VCSH has been added to the forecast. Low clouds seem likely again tonight into Wednesday and if winds drop a bit more than expected, some patchy dense fog will become more likely.

FIRE WEATHER

Issued at 302 AM MDT Tue Oct 27 2026

Isolated showers linger in the higher elevations today behind the trough and cold front that came through late yesterday into early this morning. A weak shortwave will also pass through this evening and bring an isolated rain chance back with it for parts of the Snake River Plain. That said, additional QPF today looks to remain light, less than a tenth of an inch and many will stay dry. Winds stay breezy today with gusts around 20-30 mph in the upper Snake River Plain and 15-25 mph elsewhere. Wednesday will be drier, but highs stay in the 40s to low 50s both today and tomorrow. We warm slightly on Thursday, but overnight Thursday into Friday we see the return of light precipitation chances ahead of the next system that brings more moisture to us for the weekend and another cool down.

PIH WATCHES/WARNINGS/ADVISORIES

None.