textproduct: Pocatello

KEY MESSAGES

- Hot conditions will persist across central and eastern Idaho with a HEAT ADVISORY in effect today

- Monsoon moisture will keep showers and thunderstorms going although chances will gradually diminish

- Critical to near-critical fire weather conditions expected for the next several days

DISCUSSION

Issued at 103 AM MDT Sun Jul 26 2026

Big picture pattern for the first half of the week is a ridge of high pressure centered over the southern Rockies which is sending monsoon moisture our way. Meanwhile, an upper level trough is pressing into the Pacific Northwest. We're in the middle between these two features. This keeps a threat for afternoon and evening storms going through the first half of the week with the southeast highlands with the better chances for isolated to scattered storms. We also remain mild if not hot with temps in the mid 90s and possibly approaching to 100 as the NBM has been underperforming on highs the past few days. So the heat advisory continues through today at least. Expect breezy conditions across the central mountains into the upper Snake River Plain with the upper trough trying to press into the ridge. We are watching smoke potential from the Oregon wildfires. HRRR smoke model shows some smoke moving back into the Magic Valley this morning and retreating for the afternoon. Potentially, a bigger surge of near surface smoke for Monday which could extend into the Snake Plain.

Looks like the trough passes through Thursday and the monsoonal flow diminishes. We still remain under the influence of the ridge for late week into the weekend. But it looks drier with fewer clouds so that may allow our temps to rise back towards 100, assuming they back off some early to mid week.

AVIATION /12Z TAFS THROUGH 12Z MONDAY/

Issued at 103 AM MDT Sun Jul 26 2026

Some morning showers can be found around SUN/BYI. Otherwise, the threat for storms today looks mainly confined to southeast Idaho, perhaps encroaching upon PIH, IDA and DIJ this afternoon. Most likely not on station however. Otherwise 20kt gusts possible around PIH and IDA this afternoon.

FIRE WEATHER

Issued at 103 AM MDT Sun Jul 26 2026

Isolated storms will continue this afternoon mainly across the central mountains and southeast highlands. Gusty outflow winds are possible once again with storms. Near critical winds/rh exist this afternoon across the central mountains into the Snake River Plain. Could be near critical conditions for wind and rh once again on Monday for the same areas.

PIH WATCHES/WARNINGS/ADVISORIES

Heat Advisory until 9 PM MDT this evening for IDZ051>059.