textproduct: Grand Junction

KEY MESSAGES

- Widespread Red Flag Warnings and Fire Weather Watches continue each day through Thursday. Critical fire weather conditions continue, tentatively into the weekend.

- Strong winds arrive Tuesday, coupled with single digit relative humidities, producing widespread critical fire weather conditions.

- Isolated mountain showers and thunderstorms remain possible, with wetting rains unlikely.

DISCUSSION

Issued at 1233 PM MDT Mon Jun 8 2026

A trough digging into the Great Basin continues sending some weak moisture across the region. A dry slot has intruded on this feature today. But, a broad cumulus field has still taken hold on most terrain across the West Slope. ATmospheric dynamics on the morning sounding here at Grand Junction are really not in favor of the convective environment we saw yesterday. However, a few showers could reach the surface in trace amounts. The boundary layer remains too dry, hence the widespread critical fire weather conditions we continue to produce.

The trough sends a strong jet streak across the region Tuesday. This will send surface winds up into 20-30 mph range across the region, with gusts to around 50 mph. Wind Advisories were issued for some valleys in addition to Red Flag Warnings. Gusty winds will amplify the critical fire conditions Tuesday, especially where single digit relative humidity remains in place. The trough settling south Tuesday will introduce some weak moisture for our northern counties late in the afternoon, which will help some with fire weather. This will include some chances for another shower or thunderstorm.

The deepest portion of the trough will work through late Tuesday night. However, broad cyclonic flow will remain stretched over the region, with strong winds aloft continuing. This could produce another day of strong winds for northeast UT and northwest CO on Wednesday. Red Flag Warnings continue on Wednesday for much of the region. Winds diminish on Thursday, but Fire Watches have been issued for some areas west of the Divide. This trend likely continues into the weekend, as temperatures surge in excess of 10 degrees over normal again. This hot and dry pattern will produce areas of critical fire weather again. Models are hinting at some return moisture working northward beneath the high Friday and beyond. Whether this yields any shower activity over the weekend, remains a low confidence forecast. It is looking likely that we remain hot and dry for much of the region, hoping for a few clouds and a shower to chip away at the heat a bit.

AVIATION /18Z TAFS THROUGH 18Z TUESDAY/

Issued at 1111 AM MDT Mon Jun 8 2026

Gusts of 20-30 kt are forecast at TAF sites this afternoon, with stronger gusts possible along the higher terrain. Isolated showers will build across the area this afternoon and later tonight for a few sites. VFR conditions will prevail.

FIRE WEATHER

Issued at 1233 PM MDT Mon Jun 8 2026

Critical fire weather persists through at least Thursday, with indications that hot and dry conditions amplify this weekend, as temperatures surge 10 degrees over normal. This is being prompted by strong winds and dry surface conditions beneath a strong sustained southwesterly flow aloft. Winds will increase Tuesday, blowing 20-30 mph with gusts up to 50 mph. Fire zones with critical fuels have been placed under Red Flag Warnings or Fire Weather Watches, with upgrades likely for the watches in subsequent forecast packages.

Isolated showers and thunderstorms are possible at times for the next several days, which increases the potential for new fire starts. Winds diminish Thursday, but remain gusty against the Divide, prompting another Fire Weather Watch Thursday afternoon. This hot, dry, windy pattern shows no signs of abating this weekend with the return of warmer temperatures. Some moisture working in from the south could eat into this pattern, but this seems like a thin hope to hang onto at the moment.

GJT WATCHES/WARNINGS/ADVISORIES

CO...Red Flag Warning until 10 PM MDT this evening for COZ200-202- 203-205-207-290>295. Red Flag Warning from 10 AM to 10 PM MDT Tuesday for COZ200- 202-203-205-207-290>295. Red Flag Warning from 10 AM to 10 PM MDT Wednesday for COZ200- 202-203-205-207-290>295. Wind Advisory from noon to 8 PM MDT Tuesday for COZ002-007-008- 011-020>022. Fire Weather Watch from Thursday morning through Thursday evening for COZ201-205-207-291>295. UT...Red Flag Warning until 10 PM MDT this evening for UTZ486-487- 490-491. Red Flag Warning from 10 AM to 10 PM MDT Tuesday for UTZ486- 487-490-491. Red Flag Warning from 10 AM to 10 PM MDT Wednesday for UTZ486- 487-490-491. Wind Advisory from noon to 8 PM MDT Tuesday for UTZ022.