textproduct: Grand Junction

KEY MESSAGES

- Near-record heat is expected to continue for western Colorado and eastern Utah through tomorrow.

- Daytime highs for the lower elevations are forecast to run between 100F and 106F. Consider limiting time outdoors during the heat of the day.

- Moisture returns to the region this week. Afternoon storms are possible each day with coverage increasing as the week progresses.

AVIATION /00Z TAFS THROUGH 00Z TUESDAY/

Issued at 543 PM MDT Sun Jul 12 2026

VFR conditions are expected to prevail through the TAF period. Storm activity is beginning to dissipate for the evening which will lighten up some of our winds. Winds are expected to resume terrain driven patterns overnight, with some TAF sites seeing higher sustained wind speeds and gustiness during that time period. Gusts are not expected to be impactful to aviation operations, but nonetheless worth a mention. Shower and storm activity will redevelop come Monday afternoon, particularly in the Four Corners area, but cannot rule out some activity up towards KGUC. Gusty outflows will be the main concern with those. Lastly, fires burning southeast of KHDN could possibly introduce smoke into that terminal. Therefore, chose to mention it in the TAF through Monday morning.

AVIATION /12Z TAFS THROUGH 12Z TUESDAY/

Issued at 516 AM MDT Mon Jul 13 2026

Showers and thunderstorms will develop again this afternoon, favoring the San Juans. KTEX and KDRO have the best chances for seeing this convection with PROB30 groups capturing this. Outside of convection, midlevel clouds will also develop over the higher terrain but will not be below ILS breakpoints. A few afternoon gusts of 20 to 25 kts will be possible this afternoon.

GJT WATCHES/WARNINGS/ADVISORIES

CO...Extreme Heat Warning until midnight MDT tonight for COZ001-002- 006-007. UT...Extreme Heat Warning until midnight MDT tonight for UTZ024-027.