textproduct: Pocatello

KEY MESSAGES

- Rain and snow moves in this afternoon and continues through tomorrow afternoon

- Bulk of the precipitation falls across the Wood River Valley and surrounding mountains as well as highlands near the Utah border

- Much cooler with rain and snow picks up again starting Monday

DISCUSSION

Issued at 1110 AM MST Fri Nov 13 2026

The leading edge of precipitation pushes across into the central mountains and highlands along the Utah/Nevada border by late afternoon/early evening. The bulk of the moisture moves in overnight and tomorrow morning. With the storm splitting as it sweeps through, highest amounts will be across the Wood River Valley and surrounding mountains (Sawtooths, Boulders, and Pioneers), and also extending from the South Hills/Albion Mountains through the Bear River Range. Most areas will see under 0.20" or less especially where any downslope occurs or locations closer to the Montana border. For the Wood River Valley area, the latest forecast runs at 0.25-0.55" with high end of the range falling above pass level in the surrounding mountains. This equates to around 1-3" up through 7000-9000ft, locally higher in the Boulders and Pioneers. Across the highlands south of the Snake Plain and Magic Valley, look for 0.20-0.40" at mid and upper slopes. Again, 1-3" of snow is possible above 7000ft. Other mountain ranges should end up anywhere from a Trace to 2-3" at most. As we have been saying most of this week, we have boosted the WPC forecast by 0.05-0.10" as it seems a bit low considering all of the ensemble and AI versions of various models as well as the RRFS and HRRR. Some of these seem a bit ambitious with at least double the amount we are forecasting. With how quickly this low is moving through and splitting in the process, these numbers see a bit out of reach. That said, we may still be a bit low as there are some hints we might see a few embedded heavier bands of precipitation, as well as a few thunderstorms. The cold front will be through here by lunchtime Saturday. Highs tomorrow will in the 30s and 40s areawide. Breezy southerly winds ahead of the front will turn westerly behind it. Those southerly winds are expected to cut down precipitation totals due to downslope from Burley through Rexburg along the benches.

Sunday will be dry with temperatures rebounding 5-10 degrees, but still only in the mid 40s to mid 50s. The next storm slowly moves onshore Monday, with any real chance of rain and snow across the central mountains. That particular storm, again will be splitting and quickly moving through here by Tuesday night. The next low will follow on its heals, but again trying to split. One of the more certain trends is toward much cooler temperatures. This MAY mean seeing some snow falling (not necessarily accumulating except on non-road surfaces) at lower elevations if things time out correctly. We do not have much confidence with how much falls with any particular wave of moisture at the moment.

AVIATION /00Z TAFS THROUGH 00Z SATURDAY/

Issued at 411 PM MST Fri Nov 13 2026

Expect worsening conditions through the night as rain arrives late tonight. Conditions should at least fall into the MVFR category with the rain with NBM indicating a 25% chances of IFR. Expect a wind shift 09-13Z at TAF sites associated with the cold front. Conditions should improve relatively quickly Saturday morning with vfr conditions likely at most sites at some point in the afternoon.

PIH WATCHES/WARNINGS/ADVISORIES

None.