Severe Thunderstorm Warning issued September 18 at 3:45PM MDT until September 18 at 4:00PM MDT by NWS Grand Junction CO

**Severe Thunderstorm Warning issued September 18 at 3:45PM MDT until September 18 at 4:00PM MDT by NWS Grand Junction CO**

At 345 PM MDT, a severe thunderstorm was located 19 miles southeast of Fort Duchesne, moving northeast at 25 mph.

HAZARD...Quarter size hail.

SOURCE...Radar indicated.

IMPACT...Damage to vehicles is expected.

This severe thunderstorm will remain over mainly rural areas of central Uintah County.

**What You Should Do:**

For your protection move to an interior room on the lowest floor of a building.

Torrential rainfall is occurring with this storm, and may lead to flash flooding. Do not drive your vehicle through flooded roadways.

**Alert Details:**

- **Severity:** Severe

- **Urgency:** Immediate

- **Issued by:** NWS Grand Junction CO

- **Effective:** Sep 18, 2026 3:45 PM UTC

- **Expires:** Sep 18, 2026 4:00 PM UTC

*This alert was automatically distributed from the National Weather Service via the IPAWS All-Hazards Information Feed.*