Sergeant Bluff, United States - September 15, 2025 A video filmed by X user NW Iowa Hawk fan captures a severe storm moving into Sergeant Bluff, showing dark, swirling clouds and signs of possible tornado formation. The footage highlights turbulent skies and dramatic cloud motion as the storm approaches from the south. The clip emphasizes the storm’s intense appearance without showing any aftermath. Meteorologists and observers linked the event to a wider pattern of powerful weather across the central Plains. Forecasters say the conditions were influenced by the solar maximum phase of solar cycle 25, which peaked in July 2025. The storm’s severity was underlined by concurrent reports of fire whirls and tornadoes in nearby areas, a reflection of heightened atmospheric instability tied to increased solar activity.