textproduct: Pocatello

KEY MESSAGES

- Thunderstorms again this afternoon, which will be capable of producing gusts to 55 mph.

- Showers will continue through tomorrow with a brief break Tuesday ahead of the next system.

- Seasonable temperatures through Wednesday, turning cooler late week.

DISCUSSION

Issued at 211 AM MDT Sun Apr 12 2026

Moisture will continue to lift into Idaho in southwest flow aloft as a closed low shifts eastward into northern CA today. As the center of low pressure continues shifting eastward, chance of precipitation will increase slightly today with showers continuing into Tuesday. Probability of thunder will nearly reach 20 percent or greater areawide this afternoon, with closer to 30 percent chance across central and south-central Idaho. HREF ensemble max wind gusts indicate thunderstorm outflows will be capable of producing 50 to 55 mph gusts again this afternoon. Outside of thunderstorms, wind gusts will range 30 to 40 mph with breezy to windy conditions persisting into mid-week. Daytime temperatures will run similar to yesterday's, widespread upper-50s to low-60s, finally turning more seasonable tomorrow and for the next few days. Liquid accumulation today and tomorrow will be a few hundredths to 0.15" across the Snake River Plain, generally one tenth to a quarter of an inch across the eastern and southern highlands with locally higher total in the mountains, and a quarter to three quarters of an inch in the central mountains with locally higher amounts along the highest peaks. Snow levels will initially be around 7K feet early today will continue to fall tomorrow to around 5.5K feet, allowing for light to moderate snow accumulation above 7,500 feet. Portions of the central mountains will receive 5 to 10 inches with locally higher amounts in the highest peaks while the Bear River Range will see around 3 inches through late tomorrow. Most mountain passes will only see around an inch, with the exception of Banner and Galena Summits which are forecast to receive approximately 5 or 6 inches. Flow aloft looks to briefly turn zonal on Wednesday before the next low descends from Canada and the trough axis shifts through late week. This will mean breezy to windy conditions on Wednesday with wet conditions and cooler temperatures later this week.

AVIATION /12Z TAFS THROUGH 12Z MONDAY/

Issued at 525 AM MDT Sun Apr 12 2026

Widespread showers again today with 20 to 30 percent chance of thunderstorms areawide. Have included PROB30s at all terminals to account for periods of best chances for thunderstorms. Thunderstorms will be capable of producing 45 kt outflows. Outside of storms, winds will increase after 18z with gusts 25 to 35 kts.

PIH WATCHES/WARNINGS/ADVISORIES

None.