textproduct: Pocatello

KEY MESSAGES

- Winter Weather Advisories are in effect for portions of the Central Idaho mountains and for portions of the southeast and east highlands.

- Wind Advisories are in effect for portions of the Snake River plain and eastern Magic Valley through midnight.

- Cooler conditions with below normal temperatures continue through Saturday.

- Showers and high elevation snow showers continue into Friday for most.

DISCUSSION

Issued at 135 PM MDT Wed Apr 22 2026

Strong cold front has pushed well east of Idaho with upper low sliding into Montana overnight. A cold northwesterly flow continues over eastern Idaho through Friday with well below normal temperatures continuing. In the short term wrap around moisture as the low pushes east will keep the high elevation snow and low elevation rain showers continuing. The central mountain high elevation winter weather advisory continues through 6 am and the eastern mountain advisory continues through midnight Thursday night. The wind advisory continues through midnight in the snake river plain and parts of eastern Magic Valley. Wind gusts over 50 mph have been common in the Mud lake and Arco desert region with 40 to 50 mph in the Snake River Plain common this afternoon. Precipitation winds down in the east Friday night. As far as freeze potential, Friday night looks like a very good probability of a hard freeze. Thursday night much more in question with significantly more cloud cover expected. But expect freeze warnings to be the next impact after the winds and high elevation snow subside.

Saturday looks to be the driest day in the long term period with the chance of or likely showers returning Sunday the wettest long term day with only a chance or slight chance then Monday through Wednesday. Will see a gradual warming trend Monday through Wednesday with below normal temperatures through Sunday then right around normal Monday to slightly above by Wednesday. High temperatures generally 30s and 40s mountains Thursday and Friday and 40s to lower 50s valleys. By next week highs in the 50s and 60s valleys and 40s and 50s mountains.

AVIATION /18Z TAFS THROUGH 18Z THURSDAY/

Issued at 1228 PM MDT Wed Apr 22 2026

Cloudy, showery conditions in place across eastern Idaho terminals this afternoon. Temperatures have been cold enough to support snow at KSUN and KDIJ at times with the valley terminals just seeing a cold rain, with very gusty winds. Winds will continue in the 25-30 kt at KBYI, KIDA, and KPIH with gusts upwards of 40 kts possible at times. Not quite as strong at KSUN or KDIJ but still breezy. Precip will become more showery over the next few hours, hit-or miss in nature, before another more pronounced push of moisture moves into eastern Idaho during the overnight hours. It will likely be cold enough at this time to support at least RASN in the valley terminals if not all snow. Expect predominant MVFR CIGs through the period but certainly expecting some moments of low-end VFR with any brief clearing or even IFR with showers. In short, expecting messy and hard to forecast aviation conditions over the next 24 hours.

PIH WATCHES/WARNINGS/ADVISORIES

Wind Advisory until midnight MDT tonight for IDZ051>054. Winter Weather Advisory until midnight MDT Thursday night for IDZ060-063-064-066. Winter Weather Advisory until 6 AM MDT Thursday for IDZ069- 071>074.