Severe Thunderstorm Warning issued September 23 at 4:07PM MST until September 23 at 4:30PM MST by NWS Flagstaff AZ

**Severe Thunderstorm Warning issued September 23 at 4:07PM MST until September 23 at 4:30PM MST by NWS Flagstaff AZ**

At 407 PM MST, a severe thunderstorm was located 7 miles northeast of Black Canyon City, moving south at 10 mph.

HAZARD...60 mph wind gusts and quarter size hail.

SOURCE...Radar indicated.

IMPACT...Hail damage to vehicles is expected. Expect wind damage to roofs, siding, and trees.

Locations impacted include... Black Canyon City, Agua Fria National Monument and Rock Springs.

This includes Interstate 17 between mile markers 242 and 247.

This includes the following recreation areas and campgrounds... Black Canyon Campground.

**What You Should Do:**

Seek shelter inside a well-built structure and stay away from windows. This storm is capable of producing damaging winds and large hail.

Continuous cloud to ground lightning is occurring with this storm. Lightning is one of nature's leading killers. Remember, if you can hear thunder, you are close enough to be struck by lightning.

**Alert Details:**

- **Severity:** Severe

- **Urgency:** Immediate

- **Issued by:** NWS Flagstaff AZ

- **Effective:** Sep 23, 2026 4:07 PM UTC

- **Expires:** Sep 23, 2026 4:30 PM UTC

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