Thunderstorm Wind — Pinal, Arizona

2025-09-01 · near Casa Grande, Pinal, Arizona

Event narrative

Downed power lines along Thornton Road between Peters Road and Selma Highway in Casa Grande. Wind gusts were estimated at 55-60 mph. Timing estimated from radar. No injuries reported.

Wider weather episode

Mid-level high pressure centered over NW AZ resulted an easterly steering flow across much of the southern half of AZ. Thunderstorms initially developed over the Mogollon Rim during the early to mid afternoon hours and were steered west-southwestward into the lower elevations of south-central AZ with additional activity developing from outflow boundaries. The combination of MLCAPE values peaking at around 500 J/kg and DCAPE values near 2000 J/kg resulted in a very favorable environment for strong to severe downburst wind gusts.

View location on OpenStreetMap → (32.8631, -111.7744)

Source: NOAA Storm Events Database, event_id 1291877. Narrative written by the NWS forecast office that issued the report.