textproduct: Pocatello

KEY MESSAGES

- After record-breaking rainfall, high pressure returns with clearing skies during the afternoon. Dry conditions expected until possibly this weekend.

- Northerly airflow behind storm will bring chilly overnight lows starting tonight.

DISCUSSION

Issued at 134 AM MST Mon Nov 2 2026

Today through Wed night...The bulk of precipitation ends prior to forecast start at 0500 MST this morning. Some lingering showers over the highlands bordering WY should end during the afternoon. Clouds will clear for tonight and the main risk tonight will be BR/FG and stratus clouds.

Temperatures today will struggle into the upper 40s at lower elevations. The cool end to the afternoon means chilly temperatures under nearly clear skies: Teens in the alpine basins, mid-20s to low 30s for the Snake River plain/eastern Magic Valley, 20s for the highlands. The abundant sunshine will put both highs and lows on a warming trend for Tue. Cloud cover on Wed/Wed night will cool highs and level off overnight lows. The cloud cover comes from a low moving through UT.

Windy conditions this morning in the post-frontal zone will subside during the afternoon as the upper level support for strong wind diminishes.

Thu through Sun...Building upper level high pushes storm track farther north and away from southern ID. The ridge axis staying to the west will mean northwest air flow and a re-supply of cold air that will keep temperatures from warming too strongly, or even leveling off until Sun. On Sun, a low off the west coast shifts wind to more southerly and temperatures will warm more strongly.

AVIATION /12Z TAFS THROUGH 12Z TUESDAY/

Issued at 406 AM MST Mon Nov 2 2026

Not exactly a high confidence forecast this morning. The tricky part is that abundant ground moisture will compete with a breezy boundary layer to likely not make BR/FG possible, but perhaps some stratus clouds that could produce IFR conditions. The afternoon will be warm enough to eliminate problems with ground phenomena, but the clear skies aloft and much calmer wind at the surface should lead to BR/FG or stratus risk everywhere except KSUN, where the northerly wind flow will push the BR/FG and stratus southward.

KPIH:Current IFR conditions should lift to marginal VFR around 02/17Z, then by 02/21Z CAVU (CIG and VSBY unlimited)

KIDA: North wind this AM may keep FG/BR/stratus away this morning, but hourly guidance suggests a risk of marginal VFR for CIG at times this morning after sunrise.

KBYI: Marginal VFR with breezy conditions from the west keeping away a threat of FG/BR. There is a concern that IFR for CIG is still possible with all the RA of the previous 30 hours. Mid- morning cumulus development could produce a BKN around 5000ft AGL. Lighter wind tonight will threaten FG/BR development.

KSUN: Least amount of problems with not as much rain in the central Idaho mountains and northerly wind pushing any stratus deck southward back into the lower elevations.

KDIJ: Still hasn't cleared and even could get some SHSN with the cold temperatures, though more likely SHRA. Should be in and out of marginal VFR in the morning, but by 02/20Z the movement of the low and the strong sunshine should make it CAVU. BR/FG likely to develop tonight, perhaps mid-evening. Stratus also likely late, if no VSBY impacts.

FIRE WEATHER

Issued at 134 AM MST Mon Nov 2 2026

Cold temperatures and high humidity will continue through at least Tue. High pressure will allow more significant lowering of humidity on Tue afternoon/Wed. Conditions should become dry after today with no precipitation expected until possibly late in the upcoming weekend. Stratus and fog will be affecting areas both tonight and Tue night. Gusty wind today in the Southern Idaho Dispatch area will decrease during the afternoon.

PIH WATCHES/WARNINGS/ADVISORIES

None.