textproduct: Pocatello

KEY MESSAGES

- Wind advisories are in effect until 9 pm for much of the Snake River Plain and eastern Magic Valley

- Humidity below 15 percent will combine with this wind to create critical fire weather conditions that could lead to extreme fire behavior should a fire become established. A Red Flag Warning is in effect until 9 PM MDT for the affected area, which includes the fire weather zones that contain the Snake River and all zones south or east of the River, to the WY and UT/NV borders.

- Will have windy conditions Wednesday low humidity will recur Wednesday for similar weather hazards on Wednesday and Wednesday evening.

DISCUSSION

Issued at 126 PM MDT Tue Jun 16 2026

Main impact will be the winds both this afternoon and again on Wednesday. Wind advisories are in effect for much of the Snake Plain and Eastern Magic Valley. Expect gusts 35 to 45 mph much of this afternoon and evening. Winds not expected to be quite as strong Wednesday other than the Shoshone Lava Bed region and Eastern Magic Valley, but will be breezy throughout southeast Idaho once again. Will likely see a few wind advisories and Red Flag Warnings once again. Will be slightly cooler Wednesday but highs still 70s mountains and 80s valleys. Winds will be much lighter Thursday mainly under 10 mph across the region. Highs again in the 70s and 80s. Friday will potentially some high temperatures into the lower 90s in the valleys once again.

The pattern will change a bit over the weekend as an upper level wave will move through and return the chance for showers and thunderstorms Saturday into Sunday morning. Near normal temperatures with 70s to lower 80s in more cloud cover. Dry conditions return next week Monday into Tuesday.

AVIATION /18Z TAFS THROUGH 18Z WEDNESDAY/

Issued at 1123 AM MDT Tue Jun 16 2026

Gusty winds bring the biggest impacts to aviation today and tomorrow as a dry cold front moves through the area. Gusts this afternoon will range from 30 to 40 kts at BYI, PIH, and IDA. At SUN and DIJ gusts will be closer to 25 to 30 kts. VFR conditions are expected at all sites today with just FEW cloud cover this evening. While winds will diminish a bit overnight, they will remain breezy at BYI and PIH with gusts on Wednesday afternoon reaching 35 to 40 kts at BYI, 25 to 30 kts at PIH and IDA, and 20 to 25 kts at SUN and DIJ.

FIRE WEATHER

Issued at 159 AM MDT Tue Jun 16 2026

Trough and associated surface cold front will swing in from the north. With the front impinging on the northern Rockies, most of the moisture will stay east of the Continental Divide, leaving little moisture for the west slopes and Great Basin. This southwest air flow is actually bring bone dry and hot air from NV and UT into eastern Idaho. The gradient intensity lends to some incredibly strong wind for non-convective flow with gusts as strong as 45-50mph over today and Wednesday. This combination of wind and very low humidity has triggered the Red Flag Warnings.

The front and the low continue a southeastward progression, and by Wed night the wind will be down considerably. Humidity remains dry with no shift to south or southeast where incoming humidity would be higher.

PIH WATCHES/WARNINGS/ADVISORIES

Red Flag Warning until 9 PM MDT this evening for IDZ410-413- 425-427. Wind Advisory until 9 PM MDT this evening for IDZ051>055.