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 with gusts up to 50 mph tomorrow coupled with near single digit relative humidities will make for especially hazardous critical fire weather conditions.

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

- Dry conditions are expected to end out the week with the threat of new fire starts from lightning becoming highly unlikely. However critical fire weather conditions will remain possible.

DISCUSSION

Issued at 1042 PM MDT Mon Jun 8 2026

New fire starts and a dangerous fire weather pattern setting up for Tuesday into Wednesday are the forecast highlights for this package. A climatological favored pattern for extreme fire conditions has set up with a large Western trough digging into an upstream ridge. Our CWA is in the interface of these features which is where some of the strongest winds will reside. Drought conditions have created a very dry boundary layer which will add an element of heightened concern to the widespread Red Flag conditions that will be in place again tomorrow. GOES ALPW show a batch of elevated moisture to our South that will advect through Southwest Colorado early this morning. This moisture over-running the dry low layers unfortunately means minimal moisture will be making to the ground...with wind and lightning the more likely threats. Probably don't need to say any new fire starts ahead of strong winds and low humidity arriving later in the morning/early afternoon is not optimal. Gradient winds will be strong enough over many of our valley locations that advisories are in place as winds could gust up to 50 mph during the peak heating hours. The main trough axis will begin to swing through tomorrow evening along with a cyclonically curved jet providing large scale ascent over our northern zones. Moisture moving in with the trough and lower level forcing from a cool front moves the threat of lightning and gusty winds to our northern zones through early Wednesday morning. This of course is followed by another round of strong winds approaching advisory levels across the northern valleys Wednesday afternoon. Widespread Red Flag warnings continue as a result. Any lingering moisture will be wiped out behind the trough and if there is any good news the threat of lightning will be eliminated as we head into the late week period.

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 /12Z TAFS THROUGH 12Z WEDNESDAY/

Issued at 536 AM MDT Tue Jun 9 2026

Expect mostly VFR conditions through the TAF period with strong southwest winds gusting 30 to 45 kts from about 15Z through 03Z across most of the region. The excepting to VFR will be possible reduced visibility due to smoke from local wildfires and blowing dust. Confidence not high enough to put reduced visbilities in any specific TAFs. Isolated showers with a slight chance for embedded thunderstorms are developing this morning in the southern Colorado mountains. Look for these to last through about 18Z. More showers and storms may develop in the central and northern mountains this afternoon and evening. Primary threats from these storms will be lightning and gusty outflow winds.

FIRE WEATHER

Issued at 1042 PM MDT Mon Jun 8 2026

Critical fire weather persists through at least Thursday and is likely to continue into the weekend as temperatures surge 10 degrees over normal. Winds increase tomorrow with gusts up to 50 mph possible in many valley locations where humidity will be near the single digits. Fire zones with critical fuels have been placed under Red Flag Warnings through Wednesday. Fire Weather Watches on Thursday have a high probability of being upgraded in later forecasts.

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.

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>295. Red Flag Warning from 10 AM to 10 PM MDT Wednesday for COZ200- 202-203-205-207-290>295. Wind Advisory from noon today to 8 PM MDT this evening 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 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 Wednesday for UTZ486- 487-490-491. Wind Advisory from noon today to 8 PM MDT this evening for UTZ022.