First published Oct 21, 2026, 9:23:15 PM UTC · Last updated Oct 22, 2026, 3:10:15 AM UTC

Thunderstorms and lightning

Severe Thunderstorm Watch — NWS Tucson AZ

Original source title

Severe Thunderstorm Watch issued October 21 at 1:40PM MST until October 21 at 9:00PM MST by NWS Tucson AZ

Reported by U.S. National Weather Service Alerts NWS, U.S. National Weather Service Alerts NWS

The National Weather Service in Tucson issued a severe thunderstorm warning for southeastern Graham County and central Greenlee County, Arizona, citing observed 60 mph wind gusts and quarter-size hail. The alert expected damage to vehicles, roofs, siding, and trees and instructed people to shelter indoors.

At a glance

Affected location: Southeastern Graham County and central Greenlee County, Arizona

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Why it matters

The warning gave an immediate shelter instruction for people in the affected area.

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Update history

Oct 22, 2026, 2:57 AM UTC
The National Weather Service in Tucson issued a severe thunderstorm warning for southeastern Graham County and central Greenlee County, Arizona, citing observed 60 mph wind gusts and quarter-size hail. The alert expected damage to vehicles, roofs, siding, and trees and instructed people to shelter indoors.
U.S. National Weather Service Alerts NWS

Generated scores

Scores are based on the cited reporting and use a 1–10 scale. Read the methodology.

Confidence: 8/10How certain the assessment is based on the clarity and evidence in the cited reporting.
Geographic reach: 3/10How widely the event reaches, from a local area (1) to worldwide impact (10).
Global importance: 2/10The event's broader significance, from limited importance (1) to major global importance (10).
Impact magnitude: 4/10The scale or severity of the real-world impact, from minor (1) to extreme (10).
Urgency: 8/10How time-sensitive the event is, from low urgency (1) to immediate attention needed (10).

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