textproduct: Pocatello

KEY MESSAGES

- High pressure continues to bring mostly dry weather into next week.

- Gradual warming begins this weekend.

- Patchy dense fog potential early this morning and again tonight.

SHORT TERM /THROUGH TONIGHT/

Issued at 155 AM MST Sat Jan 10 2026

High pressure over the Southwestern US makes for some relatively quiet weather after an active week. The ridge axis will move directly over Eastern Idaho today and dry conditions are still expected, though we have seen some light seeder-feeder snow up in the Island Park to Driggs area as upper level clouds are moving over this morning's low stratus in the same area. Those low clouds remain over a good portion of the South Hills, Eastern Highlands, and upper Snake River Plain. So far, the wind seems to be strong enough to keep it elevated enough to keep these clouds as low stratus. More low stratus has been developing out across the INL/Arco Desert, so that is another area we will continue to watch. This afternoon, highs will warm into the 30s for many with parts of the eastern Magic Valley and South Hills coming close to reaching the 40 degree mark. This should finally allow for a bit of melting to the snow that fell (for some of us) the other night and that in addition to diminishing winds will make for some patchy dense fog once again tonight into Sunday morning.

LONG TERM /SUNDAY THROUGH FRIDAY/

Issued at 147 PM MST Fri Jan 9 2026

The extended timeframe will be fairly uneventful, with dry and warmer than average conditions. The sole concern will be the potential for fog during the overnight and early morning hours. Otherwise, conditions will remain dry and winds light under high pressure. Daytime temperatures will span the 30s and 40s, warming to 5 to 10 degrees above normal for this time of year. The next potential chance for any precipitation will be Thursday evening, at the earliest. Approximately 40 percent of total ensemble cluster members suggest a breakdown of the upper level ridge come late next week/weekend, however, over half the members favor a persistent ridge through at least next weekend.

AVIATION /18Z TAFS THROUGH 18Z SUNDAY/

Issued at 1038 AM MST Sat Jan 10 2026

The only concern for the period continues to be the potential for late night/morning fog or low stratus as high pressure builds over the region. Our expectation is that low stratus/fog will increase at least slightly in areal coverage Sunday morning as compared to this morning due to lighter winds and additional sunshine and thus more melting snow today. However, both the National Blend and the HREF both feature minimal chances of even MVFR CIGs at all terminals, generally around 15 to 25 percent chance or lower. Given the conditions at or near KIDA this morning, have included a low SCT deck with a TEMPO for BKN004 early Sunday morning.

PIH WATCHES/WARNINGS/ADVISORIES

None.