textproduct: Pocatello

KEY MESSAGES

- Dry conditions today with winds under 20 to 25 mph

- A mix of wet and dry thunderstorms expected Saturday. A Fire Weather Watch is in place for portions of East Idaho.

- ABOVE AVERAGE temperatures expected well into next week

DISCUSSION

Issued at 332 AM MDT Fri Jun 19 2026

Dry and quiet conditions again for one more day with fairly light winds, with gusts under 20 to 25 mph across Southeast Idaho. A shortwave trough will swing through on Saturday, bringing isolated to scattered showers and thunderstorms along with increased wind. Probability of thunderstorms is greatest in the Island Park region and along our borders with MT and WY. QPF for Saturday ranges 0.10" to 0.20" from the central mountains, eastward along the MT Divide and across our eastern mountains. Precipitation amounts decrease further southeast along the ID-WY border to 0.10" or less. While the Upper Snake River Plain and Arco Desert region may see an isolated shower or storm which could bring brief heavy rain, little activity is anticipated, especially across areas further west and south. Aside from a few showers lingering into Sunday in the Island Park region, conditions will turn dry again heading into next week.

Temperatures will remain in above-normal territory for the foreseeable future with daytime highs running 5 to 10 degrees above normal for much of the period. Low elevation areas will warm into the 80s most days, although today and again early to middle of next week will be the warmest periods with many low elevation areas warming into the low 90s.

AVIATION /12Z TAFS THROUGH 12Z SATURDAY/

Issued at 602 AM MDT Fri Jun 19 2026

VFR conditions forecast for this period with increasing mid to high- level clouds. Winds will increase just outside of this TAF period along with precipitation overspreading the area after 12z. The terminals impacted most will be KDIJ and KSUN, with much lower confidence in any direct impacts elsewhere.

FIRE WEATHER

Issued at 131 PM MDT Thu Jun 18 2026

FIRE WEATHER WATCH issued for Fire Weather Zones 410, 413, 422, 427, 475, and 476 on Saturday due to scattered thunderstorms. More below...

Dry conditions continue through today with min RH values remaining between 10 and 20 percent for most of Southeast Idaho. Winds will be fairly similar to yesterday, with gusts maxing out at around 20 to 25 mph. A shortwave will swing through on Saturday, bringing increased wind and isolated to scattered showers and thunderstorms. Outside of thunderstorm outflows, wind gusts will reach 25 to 35 mph. Min RH on Saturday will generally reach 30 percent or greater across all Fire Weather Zones. Probability of thunder Saturday afternoon is highest in FWZ 411, where chance of thunder is 40 to 50 percent, and to a lesser degree the eastern extents of 410 and 413, as well as 475 and 476, where probability of thunder is around 30 to 35 percent. A FIRE WEATHER WATCH remains in effect for FWZs 410, 413, 422, 427, 475, and 476 for 9 AM to 9 PM Saturday for scattered thunderstorms. Outside of isolated activity lingering in the Island Park region into Sunday, conditions will quickly turn dry again, with min RH on Sunday back into the 10 to 20 percent range for most of Southeast Idaho. Wind gusts on Sunday should largely return to below 20 mph, although some areas could still see gusts in the 20 to 30 mph range.

PIH WATCHES/WARNINGS/ADVISORIES

Fire Weather Watch from Saturday morning through Saturday evening for IDZ410-413-422-427-475-476.