textproduct: Pocatello

KEY MESSAGES

- Isolated to scattered thunderstorms this afternoon.

- Mainly dry Thursday.

- Unsettled weather returns for the weekend.

DISCUSSION

Issued at 206 AM MDT Wed May 27 2026

Low pressure centered roughly over Lake Tahoe will create another day or isolated to scattered thunderstorms this afternoon. Expect storms this afternoon to move from southeast to northwest because of the influence of the low. Dew points are still running into the 40s for much of east Idaho although drier air will be working into the region from the south throughout the afternoon. Once again, expect a mix of wet and dry storms. Although we may be leaning more towards dry than wet because of the influence of the drier air trying to work in. Will be marginal for Lake Wind on the American Falls Reservoir today as winds should be transitioning from northeast to southeast. A northeast wind allows waves to build along the entire length of the reservoir while a southeast wind cuts across. Thursday looks mostly dry with quite a bit of dry air over the region. We could still pop an isolated storm, although not seeing much indication of that in the high res models at this time. Friday into Saturday the low will be advancing into and through our area. Am concerned that the rain chances offered by the NBM may be a little too dry for Friday afternoon but not confident enough at this time to make adjustments. Saturday looks like we'll be dealing with a good bit of clouds and rain. Rainfall amounts will range from a few hundredths across central Idaho to around 0.25 inches across the Island Park region. Because of the cloud cover, highs will most likely be in the 60s, with 50s for the eastern highlands. Some low chances for rain continue Sunday and Monday with the models indicating another low trying to work into the region from the northwest but never quite gets here. Middle of next week looks dry with above normal temps once again.

AVIATION /18Z TAFS THROUGH 18Z THURSDAY/

Issued at 1113 AM MDT Wed May 27 2026

Another round of showers and thunderstorms possible for this afternoon and evening. We are covering this with VCSH and PROB30 with gusts in the TAFs up to 45kts, although gusts over 50kts are possible. With the low to our southwest, overall flow from an easterly or southeasterly component will prevail. Expect VFR even with most showers and storms, with any subsequent drops into MVFR or IFR with a heavier cell over a particular airport. We should clear out overnight and remain dry for Thursday.

FIRE WEATHER

Issued at 206 AM MDT Wed May 27 2026

Expect another round of isolated to scattered thunderstorms this afternoon. Storms will once again be a mix of wet and dry storms with erratic, gusty winds possible near storms. Thursday looks to be the driest day of the week, although a stray thunderstorm is still possible. Humidity levels on Thursday will be in the teens and wind gusts will range from 20 to 30 mph.

PIH WATCHES/WARNINGS/ADVISORIES

None.