textproduct: Grand Junction

KEY MESSAGES

- High pressure builds into the region and temperatures trend upward to about five degrees above normal through the weekend.

- Isolated storms are possible across the higher terrain Tuesday with mostly dry conditions elsewhere.

- Dry conditions return mid to late week with high temperatures warming to 5 to 10 degrees above normal.

DISCUSSION

Issued at 1030 PM MDT Thu Oct 1 2026

High pressure remains in control Friday into the weekend with drier conditions and warming temperatures to about 5 degrees above normal. Hurricane Rachel looms just off the Baja and it appears like the high pressure will remain in position to keep this moisture from advecting northward. With the high positioned over the Great Basin and Hurricane Rachel off the Baja, it almost forms a Rex Block. Some high level moisture will move into the area from a trough moving towards the west coast, resulting in some high cirrus across the region this weekend. Models are indicating some isolated storms potentially forming over the San Juans Sunday afternoon. This eastern Pacific trough opens up and moves over top of the ridge on Tuesday as an open shortwave with some isolated to scattered storms possible over the high terrain. Aside from that, conditions will remain mostly dry through the coming week. The high will build back to the west which further steers Hurricane Rachel westward out to sea. High pressure ridge will shift eastward and remain overhead for the remainder of the week with a Pacific Northwest trough helping steer remnants of this tropical system up and around the high and keeping us warm and dry through the remainder of the week. High temperatures remain 5 to 10 degrees above normal through the first week of October.

AVIATION /06Z TAFS THROUGH 06Z SATURDAY/

Issued at 1109 PM MDT Thu Oct 1 2026

Mostly clear skies and light winds will keep VFR conditions in place over the next 24 hours. However there remains a low probability of low clouds and stratus forming in some of the favored spots overnight so will be monitoring this and updating as necessary.

GJT WATCHES/WARNINGS/ADVISORIES

CO...None. UT...None.