textproduct: Pocatello

KEY MESSAGES

- Dry weather continues into next week

- Inversion conditions persist with limited fog/stratus

- Overall slow warming trend throughout this week?

SHORT TERM /THROUGH THURSDAY NIGHT/

Issued at 1239 PM MST Tue Jan 13 2026

We are still under the control of high pressure for the next several days. The Blend of Models continues to be way too warm in some of our colder valley spots with inversions in place. Expect highs to remain in the 20s and 30s where those hang tough, and above 40 where we can get some mixing and also where snow cover is decreasing or gone completely. Winds will be light or driven by terrain during this period. Any fog or stratus impacts remain limited. We kept it going in the Stanley Basin as it appears there some there this morning. We also left it in down along the Utah border for side of the Cache Valley, south of Malad and around Bear Lake. We didn't see any of that this morning, but we also had higher clouds around. We are expecting less clouds tonight and tomorrow night, so we put it back in the forecast. The Blend also wants to add back into more valley locations, but it has been doing that for days and we haven't much if anything outside of those areas. Therefore, we didn't expand coverage.

LONG TERM /FRIDAY THROUGH TUESDAY/

Issued at 1239 PM MST Tue Jan 13 2026

Things still look dry well into next week. The Blend of Models is still trying to gradually warm things up throughout the period. However, it isn't handling temperatures well especially where the inversion is stronger. The ridge is also slipping back west a bit and bringing a more northerly flow into our area. That usually produces slightly colder temperatures this time of year. We will have to monitor inversion conditions and also temperatures upstream and see if any surge of colder air makes across the Divide into central and eastern Idaho. We will likely be making changes to temperature forecasts down the road based on how the pattern and conditions trend. If you are wondering when it might rain or snow again? PERHAPS, and we stress PERHAPS, toward the second half of next week. Time will tell.

AVIATION /00Z TAFS THROUGH 00Z THURSDAY/

Issued at 442 PM MST Tue Jan 13 2026

High pressure will remain in control bringing light winds and mostly VFR conditions. Models show mid-level clouds clearing out overnight into tomorrow morning. There were a few sites with slightly reduced visibility last night. With clouds clearing out and overall light winds fog may be possible. Some model guidance does show the possibility for fog, especially for IDA, and to a lesser degree DIJ and PIH. Thus, have added in a line with 6SM and BR and FEW to SCT low clouds for all sites except SUN. Otherwise, expect clear skies and overall light winds for all TAF sites by late morning and continuing through tomorrow afternoon.

AIR QUALITY

Issued at 1239 PM MST Tue Jan 13 2026

An AIR STAGNATION ADVISORY remains in place for the Pocatello area, our side of the Cache Valley, and south of Malad toward Samaria. We will continue to see limited mixing and lighter winds for the next several days. Something to watch will be as we head into the weekend, the ridge actually weakens and/or shifts back to the west and northerly flow picks up a bit across our side of the state. Whether that is strong enough to kick up any wind or mix out inversions and "clear" the air remains to be seen. We will not look at extending/canceling the headline until we get down the road a bit to see how things trend

PIH WATCHES/WARNINGS/ADVISORIES

Air Stagnation Advisory until noon MST Sunday for IDZ054-059.