textproduct: Pocatello

KEY MESSAGES

- Lingering showers for parts of east Idaho today and into Monday.

- Chilly weather continues into Tuesday.

- Warmer and mainly dry for midweek and beyond.

DISCUSSION

Issued at 126 PM MDT Sun May 31 2026

Satellite imagery shows the rainmaker from yesterday has shifted north into Montana, but there is a weak shortwave over south central Oregon moving toward East Idaho. Radar shows mainly isolated showers and thunderstorms northeast of a line from Arco to Idaho Falls already early this afternoon. High- resolution models continue to produce convection mainly northeast of this line through the evening, with gust potential around 40 mph. Additional precipitation amounts will be much less than the totals seen yesterday, but stronger storms could produce around 0.25". Convection ends mid-evening, leaving overnight temps the next concern. Forecast overnight lows have dropped about a degree or so from previous forecasts, especially across the northern portions of the Snake Plain. This leaves a FROST ADVISORY in play, but will hold off, as it appears that the majority of the Mud Lake and Upper Snake Plain zones are at or above the 36 degree threshold for issuance. Will hold off, but outlying areas especially those that tend to run cold, could briefly dip toward erring on the side of caution, and covering tender gardens. Another round of showers and thunderstorms is expected Monday afternoon and evening as shortwave rotates through the region through the base of the trough.

Temperatures rebound through the week, with Tuesday and Wednesday continuing to look mostly dry. The next system looks to arrive late Wednesday into Thursday with isolated to scattered showers and thunderstorms, mainly north. Most of East Idaho is expected to remain dry at this time. Breezy to locally windy conditions will be possible Thursday as this system works through.

AVIATION /00Z TAFS THROUGH 00Z TUESDAY/

Issued at 600 PM MDT Sun May 31 2026

Still seeing some lingering showers and storms around KSUN, KIDA and KDIJ this evening but it appears activity will stay just north of these terminals but it will be close. Have VCTS/SH accordingly for a few more hours to account for this potential before activity should move north and diminish allowing for gradually clearing skies and VFR conditions. Winds will lessen over the next few hours across the valley terminals, becoming light and variable into the late morning on Monday. After which, expecting traditional SW/W flow to setup around 10 kts or so for the afternoon hours.

FIRE WEATHER

Issued at 222 AM MDT Sun May 31 2026

A low pressure system will slowly pull away from the area. Light rain will continue for parts of central and east Idaho today. Dry and breezy conditions will continue for south Idaho today. Mostly dry weather with gradually warming temperatures is expected areawide for the rest of the week.

PIH WATCHES/WARNINGS/ADVISORIES

None.