textproduct: Pocatello

This forecast discussion was created in the public domain by the National Weather Service. It can be found in its original form here.

KEY MESSAGES

- One More Cool Night: Overnight temperatures hover around or just above freezing for portions of the Snake Plain tonight.

- Spring Warm-up: High pressure will amplify through the weekend, pushing temperatures approximately 10 degrees above seasonal normals by Sunday and Monday.

- Predominantly Dry: Dry conditions will prevail through the weekend.

DISCUSSION

Issued at 117 PM MDT Fri May 1 2026

East Idaho under the influence of upper ridge per water vapor satellite imagery. Low off coast is projected to continue sagging south down the coast into the weekend, keeping ridge in place. Some moisture may creep back into the region as early as Sunday afternoon, for a slight chance of showers and thunderstorms across higher elevations. Better moisture pushes north through the Great Basin for Monday and Tuesday as the center of the low rotates into central California and then shifts through the desert Southwest. Ridging looks to be in place for the remainder of the work week. Temperatures undergo a gradual warming trend throughout the week. Deterministic NBM puts northern portion of the Snake Plain in line for frost conditions overnight, generally defined for the purpose of a FROST ADVISORY as overnight lows 32 to 36. Given the sheer number of days over the past couple weeks that have seen deep hard freeze conditions, will forego an additional headline tonight under the general warming trend. It is expected that temperatures will be warm enough to not even need to consider it.

AVIATION /00Z TAFS THROUGH 00Z SUNDAY/

Issued at 946 PM MDT Fri May 1 2026

High pressure is strong enough to keep clouds away until a few cirriform clouds move through in the afternoon and evening on Sat. Wind is extremely light under the high, mostly driven by the slope-valley effect with KPIH seeing some moderate 15KT wind in the afternoon off the American Falls Reservoir being the strongest expected. Once again no impact from VSBY or CIG concerns.

PIH WATCHES/WARNINGS/ADVISORIES

Frost Advisory from 3 AM to 9 AM MDT Saturday for IDZ051>055.

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