textproduct: Pocatello

KEY MESSAGES

- Wind advisories are in effect from Noon to 9 PM for the eastern Magic Valley and Shoshone area, where wind gusts will reach 45 mph.

- A Lake Wind Advisory is in effect for the American Falls Reservoir during the same aforementioned timeframe, where west winds will range 20 to 30 mph with gusts to 35 mph.

- The combination of humidity below 15 percent and elevated winds will mean critical fire weather conditions again today 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.

DISCUSSION

Issued at 247 AM MDT Wed Jun 17 2026

Winds will remain elevated again today, with widespread gusts ranging 30 to 40 mph. Slightly stronger gusts are expected across the eastern Magic Valley and Shoshone/Lave Beds region, where a WIND ADVISORY is in effect today from Noon through 9 PM MDT. Additionally, a LAKE WIND ADVISORY is also in effect for American Falls Reservoir for westerly winds 20 to 30 mph and gusts to 35 mph, which will lead to choppy conditions, especially for small craft. Lastly, a RED FLAG WARNING has been issued again today for much of Southeast Idaho due to the combination of gusty winds and low relative humidity 15 percent or lower. Dry conditions will persist through Friday, but winds will turn much lighter Thursday and Friday. Come Saturday, humidity and precipitation/thunderstorm will increase as the next Pacific trough arrives.

Temperatures will remain in above-normal territory for the foreseeable future. While daytime highs will run 5 to 10 degrees above normal for much of the period with many observing 80s, peak warmth this Friday and potentially again early to middle of next week will mean temperatures up to 15 degrees above normal in the low 90s for many low elevation areas!

AVIATION /06Z TAFS THROUGH 06Z THURSDAY/

Issued at 918 PM MDT Tue Jun 16 2026

Winds expected to go light at DIJ and IDA with a downvalley wind at SUN overnight. PIH and BYI winds will likely stay up with some gusts to 30 kts likely at BYI by morning. Gusty winds likely at all sites once again Wednesday afternoon.

FIRE WEATHER

Issued at 247 AM MDT Wed Jun 17 2026

Widespread near-critical to critical fire weather conditions are anticipated again today with conditions very similar to yesterday. Therefore, another round of RED FLAG WARNINGS are in effect today for Fire Weather Zones 410, 413, 425, and 427 due to gusty winds and low relative humidity values. Widespread low relative humidities will range 10 to 15 percent with 30 to 45 mph wind gusts. Even outside of the aforementioned zones, near-critical conditions will persist with more localized areas with of RH values below 15 percent and winds gusting up to around 25 mph. Dry conditions will persist through Friday, but winds will be much lighter Thursday and Friday. As we head into the weekend, humidity and precipitation/thunderstorm chances will increase as the next Pacific trough arrives.

PIH WATCHES/WARNINGS/ADVISORIES

Red Flag Warning from noon today to 9 PM MDT this evening for IDZ410-413-425-427. Wind Advisory from noon today to 9 PM MDT this evening for IDZ051-055.