textproduct: Pocatello

KEY MESSAGES

- Warming and drying trend now through the holiday weekend. Temperatures near normal by Thursday.

- Afternoon and evening thunderstorms today and Wednesday nearly everywhere in eastern Idaho, then the ID-WY border region for Thursday.

- Breezy afternoon on Friday, otherwise light wind.

DISCUSSION

Issued at 144 AM MDT Tue Jun 30 2026

Tue through Thu night...A trough in the Pacific Northwest will trigger showers and thunderstorms mainly this afternoon and evening. Best precipitation amounts should occur in the central Idaho mountains, and generally better in the north half of the forecast area than in the south half. The trough is slowly moving and will move into western Idaho during the day Wed, and through eastern Idaho Wed night. This will mean a continued risk of light preciptation and thunderstorms. By Thu, the trough has passed. Clearer skies means warming to near normal with diminishing threat of thunderstorms and showers, mainly limited to the eastern half of the of the forecast area.

Fri through Mon...The risk of thunderstorms dies out just in time for Independence Day. Temperatures will be right around normal, which is lower to middle 80s in the Snake River plain/eastern Magic Valley, 70s to around 80 for the mountains and highlands. Temperatures start to soar Sun with some lower elevations surpassing 90 degrees. Showers and thunderstorms don't return until Mon afternoon.

AVIATION /12Z TAFS THROUGH 12Z WEDNESDAY/

Issued at 512 AM MDT Tue Jun 30 2026

A trough will be inching closer to Idaho from the west. It will provide enough instability that a chance of TSRA and SHRA will develop for the afternoon. While the showers can be any airdrome, only KSUN and KDIJ are at serious risk of TSRA, enough to warrant a PROB30 group. SHRA barely gets a VCSH remark. KIDA actually had a brief episode of BR, so have VCFG in the first few hours this morning.

Wind is very light, some places like KBYI taking until 30/21Z to develop a slope-valley wind. Have 15KT peak sustained wind, but even that is a little high for KIDA and KPIH. This is outside of TSRA.

CIGs should stay solid VFR, with the stormiest TAFs having the possibility of 4000ft AGL CIGs; KDIJ the likeliest and KSUN a distant second.

No impact to VSBY expected, unless the fog re-develops in the next couple of hours.

FIRE WEATHER

Issued at 144 AM MDT Tue Jun 30 2026

Afternoon/evening showers and thunderstorms continue through Fri afternoon, although by then it will mainly be in southern and eastern highlands. The holiday should be warm, dry, and quiet wind-wise, with no threat of thunderstorms or any precipitation. The only significant wind will be on Fri afternoon, when temperatures are still near normal for the time of year. Showers and thunderstorms return after the holiday weekend is over, on Mon.

PIH WATCHES/WARNINGS/ADVISORIES

None.