Tucson, AZ Hail Storm – October 2025

What Happened

A severe hail storm moved through Tucson, AZ, on October 11, 2025, with spotter-verified 1-inch hail and multiple warning-area alerts through the afternoon and evening. The event produced confirmed hail near 3 PM and repeated radar and warning signals later in the day.

The first alert came at 2:52 PM MST, when dual-polarization radar showed 1-inch hail potential. Three minutes later, at 2:55 PM, an NWS employee reported 1.0-inch hail. A trained spotter reported the same size at 3:00 PM MST. Those field reports anchored the early part of the storm sequence in the Tucson metro.

Additional alerts followed at 5:09 PM, 6:41 PM, 6:45 PM, and 8:20 PM MST, each tied to 1-inch hail in the NWS warning area. The final alert came at 9:07 PM MST, again with dual-polarization radar confidence for 1-inch hail. The timing points to a long-lived hail threat across the metro, with repeated storm passes or redevelopment over the same general corridor.

The local reports were concise and consistent. An NWS employee reported 1.0-inch hail. A trained spotter reported 1.0-inch hail. Both observations matched the radar-derived hail size from the first alert and gave the event early ground truth.

Damage Assessment

The surface impact was limited in the field reports provided, but the hail was verified by both an NWS employee and a trained spotter in Tucson. The early reports confirm that the storm produced hail large enough to reach the 1-inch threshold in the metro during the first part of the event.

The rest of the warning sequence suggests additional hail potential across the same broader area later in the day. The alerts at 5:09 PM, 6:41 PM, 6:45 PM, 8:20 PM, and 9:07 PM MST kept the hail threat active across the warning area, though the available reports here do not add new spotter-confirmed hail sizes beyond the first verified observations.

For contractors, the key point is not one isolated report. It is the spread of alerts through Tucson over many hours, with verified hail early and renewed hail potential later. Roof, gutter, and vehicle checks should start in the neighborhoods that saw the first reports around 3 PM, then extend into the later warning corridor as additional alerts came in.

On 1-inch hail events, damage can be uneven street to street. In Tucson, that means working from the reported hail points outward instead of assuming the full metro took the same impact. Field verification matters here because the storm delivered both radar-confirmed and spotter-verified hail, but the public warning area was broader than the specific hail reports.

What Contractors Should Know

Start with the properties closest to the verified reports near 3 PM MST. The NWS employee report at 2:55 PM and the trained spotter report at 3:00 PM give you the best initial canvass zone in Tucson. Focus on roofing slopes facing the storm path, soft metals, skylights, vents, and vehicle lots near the early report area.