textproduct: Pocatello

KEY MESSAGES

- Last day of near-record heat today with Heat Advisories in effect.

- Breezy to windy this afternoon and Sunday combined with very low humidity for dangerous fire weather conditions. Red Flag Warnings remain in effect.

- No precipitation expected through much of next week with significantly cooler temperatures Monday through Wednesday.

DISCUSSION

Issued at 135 PM MDT Sat Aug 1 2026

Extreme heat continues through today with many locations in lower elevations around 100 or slightly above. Will have some breezy conditions as well with 10 to 20 mph winds this evening in the Snake River Plain and higher elevations as well. Will finally start to see a cool down Sunday and into next week as a dry upper level trof moves through Idaho and flow aloft turns from southwest to northwest allowing some Canadian air to filter into Idaho. Highs tomorrow mainly in the low to mid 90s lower elevations with very breezy conditions once again with speeds sustained again 10 to 20 mph with gusts around 30 mph in many locations. By Monday low elevations highs in the 80s and below normal for once and mountains mainly in the 70s. Cooldown will be short lived with upper ridge rebuilding Wednesday into next weekend with high temperatures well into the 90s in lower elevations by Thursday. It does appear to be a very dry 8 days with no precipitation in the forecast grids through next Saturday.

AVIATION /00Z TAFS THROUGH 00Z MONDAY/

Issued at 541 PM MDT Sat Aug 1 2026

VFR conditions are expected through the period. Gusty SW winds will be the only issue to aviation over the next 24 hours. Winds are still elevated (gusts of 28 kts) at IDA currently. Expect winds to drop off briefly tonight for IDA, as the other sites already have, and winds will be overall light into early tomorrow morning. Winds will start picking up again by mid tomorrow morning and peak by late tomorrow afternoon. Gusts upwards of 20 to 30 kts will be possible at all sites. BYI will likely have the lowest gusts in that range. Skies should be mostly clear to mostly sunny with no precipitation expected as drier air has moved into the region.

FIRE WEATHER

Issued at 135 PM MDT Sat Aug 1 2026

Red flag warnings remain in effect for through Sunday for much of the Snake Plain, eastern Magic Valley and central mountains for the combination of low humidity and gusty winds. Humidity values are in the single digits with hot temperatures in place on currently. Wind gusts likely in the 25 to 30 mph range in the red flag area today. On Sunday, cooler temps will allow humidities to be slightly higher. However, probably still lower teens in many areas with wind gusts in the 25 to 40 mph range. After a brief cool down, temperatures will again surge for mid to late week. As such, near critical to critical fire weather conditions appear likely for much of the next week with little to no precipitation expected.

PIH WATCHES/WARNINGS/ADVISORIES

Heat Advisory until midnight MDT tonight for IDZ051>059-061- 065-067-068-070-075. Red Flag Warning until 9 PM MDT Sunday for IDZ410-422-425-475- 476.