textproduct: Grand Junction

This forecast discussion was created in the public domain by the National Weather Service. It can be found in its original form here.

KEY MESSAGES

- Showers and storms will develop each afternoon/evening for the foreseeable future.

- Heavy rain remains the primary threat of storms across the region. Gusty outflow winds and hail are likely in stronger cells as well.

- Watch out for flash flooding and debris flows in vulnerable terrain, especially for areas near and downstream of burn scars.

DISCUSSION

Issued at 1224 PM MDT Sat Jul 25 2026

HOT WITH PM STORMS INTO NEXT WEEK:

High pressure has settled in over the Intermountain West and remains nearly stationary through much of the week ahead. This puts eastern Utah and western Colorado in a west/southwest flow regime allowing for plenty of warm air to continue to funnel across the region. As a result, unseasonably warm temperatures with valley highs in the upper 90s, low 100s are here to stay. Remain cognizant of the heat and pack an excess of water for your outdoor adventures.

Additionally, monsoonal moisture continues to slosh around underneath the high. This will support afternoon convection each day. Thunderstorms will develop over and favor the high country, with some showers/storms holding together as they move off the terrain and over the valleys. Heavy rainfall will be the primary threat with PWATs over 1" in place and slow storm motions expected. Please see the hydrology section below for more information. Dew points in the 50s will limit the strength of outflow gusts, but gusts up to 45 mph can't be ruled out. Hail, predominately under half an inch in diameter, rounds out the arsenal of thunderstorm hazards this week.

AVIATION /18Z TAFS THROUGH 18Z SUNDAY/

Issued at 1224 PM MDT Sat Jul 25 2026

Winds are generally light across the region but will pick up this afternoon. However, afternoon gusts are still expected to remain on the lighter side with the exception of strong outflow gusts from nearby showers and thunderstorms. KASE, KTEX, KDRO, and KGUC have the highest chances of TAF site impacts from showers and storms today. There is a low chance of MVFR conditions at these sites from brief periods of heavy rainfall. Winds will become light and variable tonight.

GJT WATCHES/WARNINGS/ADVISORIES

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

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