textproduct: Grand Junction

KEY MESSAGES

- Heat Advisories remain in effect this weekend. Some very isolated showers and storms are possible over the higher terrain.

- Isolated storms favoring the high terrain are possible early next week with coverage increasing by late next week with better wetting rain chances.

DISCUSSION

Issued at 1126 AM MDT Sat Aug 8 2026

High pressure remains centered across the area today though it will flatten some over the coming days. As expected, a few more clouds are moving across the area due to an uptick in moisture and weak waves also moving around the high pressure. Both the HRRR and NAMNEST are indicating some very isolated convection this afternoon and evening, mainly over the higher terrain. Sub-cloud layers remain very dry so don't expect much, if any precip, to hit the ground. This will keep gusty outflow winds the main concern. This trend of afternoon and evening convection continues into next week. An uptick is progged to occur Wednesday onwards as a trough approaches from the west and allows deeper moisture to start moving into the region. Pair this with several shortwaves moving through and an uptick in convection looks more and more probable. We will likely see a return to more widespread showers and storms but this far out there is still some model discrepancies. Stay tuned...

Temperatures will remain well above normal for this time of year so the going Heat Advisories will remain in place today and again tomorrow. Increased cloud cover during the week will allow temperatures to drop a few degrees so do not expect any products during that timeframe.

AVIATION /18Z TAFS THROUGH 18Z SUNDAY/

Issued at 1126 AM MDT Sat Aug 8 2026

VFR conditions will remain in place as mid to high clouds continue to move across the region this afternoon and evening. A few showers and storms may form over the higher terrain but do not expect any impacts to TAF sites so left any mention out of TAFs.

GJT WATCHES/WARNINGS/ADVISORIES

CO...Heat Advisory until 8 PM MDT this evening for COZ006. UT...Heat Advisory until 8 PM MDT this evening for UTZ022-027. Heat Advisory from 1 PM to 8 PM MDT Sunday for UTZ022-027.