textproduct: Grand Junction

KEY MESSAGES

- Widespread Red Flag Warnings and Fire Weather Watches continue each day through Wednesday.

- Each afternoon gusts above 25 mph are expected for most locations, and gusts around 25-35 mph will be common. The windiest day will be Tuesday and those gusts could exceed 45 mph for some spots.

- High-end fire weather conditions are likely for portions of the region on Tuesday due to very low relative humidity and strong winds.

- Critical Fire Weather conditions are looking increasingly likely through the end of the week.

DISCUSSION

Issued at 1026 PM MDT Sun Jun 7 2026

THE PATTERN:

Looking at the broader picture, troughing dominates over the West Coast while ridging is in place to the east. This places eastern Utah and western Colorado squarely under strong southwesterly flow aloft. This is advecting upper level moisture into the region, bringing some increased high level clouds and the potential for afternoon showers or thunderstorms over the higher terrain. At the surface, dry air dominates, meaning that any showers or storms that develop are far more likely to produce strong, gusty outflow winds and lightning, rather than heavy rain. This also contributes to the widespread critical fire weather conditions, discussed below. Little in the overall pattern changes through midweek, although shortwaves rotating through the upper level pattern will result in periods of stronger winds, particularly on Tuesday. The upper level pressure gradient tightens, with the surface gradient tightening in response. Widespread gusts of 25-35 mph are expected, with localized gusts up to 50 mph possible. By Wednesday, the entire upper level trough begins to shift east, with flow aloft over eastern Utah and western Colorado shifting to more westerly. The region does remain under the influence of the upper level jet through the end of the week, however, keeping breezy afternoon winds and the potential for fire weather in the forecast. Highs remain 5-10 degrees above normal through the period.

CRITICAL FIRE WEATHER:

As mentioned above, critical fire weather conditions are expected through much of the coming week. Very dry surface levels, with minimum daytime humidity values in the single digits and low teens are expected daily. Widespread southwesterly winds gusting 25-35 mph are also expected through the period, with localized higher gusts up to 50 mph. Tuesday in particular is expected to be the windiest day, with gusts of 35-45 mph likely. Where fuels are critical, Red Flag Warnings are in effect through Tuesday, and Fire Weather Watches for further out in the week. In addition, isolated dry thunderstorms are possible at times over the next several days, increasing the potential for new fire starts.

AVIATION /12Z TAFS THROUGH 12Z TUESDAY/

Issued at 552 AM MDT Mon Jun 8 2026

Winds are light and terrain driven across the region. By the late morning stronger gusts are expected to begin. Gusts of 20 to 30 kts are forecast at TAF sites during the afternoon, with stronger gusts possible along the higher terrain. High level clouds will move in from the west around 18Z. VFR conditions will prevail.

FIRE WEATHER

Issued at 1026 PM MDT Sun Jun 7 2026

A long stretch of critical fire weather persists through at least Thursday, with indications of lingering into next weekend. This is being prompted by strong winds and dry surface conditions beneath a strong sustained southwesterly flow aloft. Through Monday, winds will gust 25-35 mph with isolated values to 40 mph possible and relative humidities will be near or in the single digits. 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 dry thunderstorms are possible at times for the next several days, which increases the potential for new fire starts. Critical fire weather amplifies on Tuesday, with increased concerns for high-end conditions due to the stronger winds beneath a tightening pressure gradient and single digit relative humidities. The majority of the region will see gusts of at least 35 mph, however gusts could reach as high as 50 mph. Multiple forecast runs have been consistently painting these stronger winds, leading to increasing confidence in the high-end nature of Tuesday's fire weather potential. Critical fire weather likely persists for portions of the region on Wednesday and Thursday as well.

GJT WATCHES/WARNINGS/ADVISORIES

CO...Red Flag Warning from 10 AM this morning to 10 PM MDT this evening for COZ200-202-203-205-207-290>293-295. Red Flag Warning from 10 AM to 10 PM MDT Tuesday for COZ200- 202-203-205-207-290>293-295. Fire Weather Watch from Wednesday morning through Wednesday evening for COZ200-202-203-205-207-290>293-295. UT...Red Flag Warning from 10 AM this morning to 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. Fire Weather Watch from Wednesday morning through Wednesday evening for UTZ486-487-490-491.