First published · Last updated
Thunderstorms and lightningSevere Thunderstorm Warning — NWS Flagstaff AZ
Original source title
Severe Thunderstorm Warning issued October 21 at 8:59AM MST until October 21 at 9:15AM MST by NWS Flagstaff AZ
Reported by U.S. National Weather Service Alerts NWS
The National Weather Service issued a warning covering parts of Coconino and Yavapai counties, Arizona, through 9:15 a.m. MST on October 21, 2026. A radar-indicated storm near Fernow Cabin was moving north at 45 mph, with quarter-size hail reported.
At a glance
- Affected location: Near Fernow Cabin, Arizona
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Why it matters
The warning instructed people to shelter indoors and reported expected vehicle damage from hail.
Location
Highlighted marker: this event.
Generated scores
Scores are based on the cited reporting and use a 1–10 scale. Read the methodology.
- Confidence
- 6/10
- Geographic reach
- 3/10
- Global importance
- 2/10
- Impact magnitude
- 4/10
- Urgency
- 9/10
Primary official sources
- U.S. National Weather Service Alerts NWSSevere Thunderstorm Warning issued October 21 at 8:59AM MST until October 21 at 9:15AM MST by NWS Flagstaff AZ
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