A powerful storm blew through southern Iowa on Thursday, damaging trees and drenching the area.

Severe thunderstorm warning marched across the Ottumwa area as the storm moved east. It had formed early Thursday in Nebraska, and held together as it made its way across Iowa. At least one tree in Ottumwa was uprooted by the storm and authorities responded to reports of downed power lines as well.

Officially, 0.42 inches of rain was measured in Ottumwa, but radar estimates suggested an inch may have fallen on some areas. Temperatures plummeted, dropping as much as 13 degrees as the rain-cooled air moved through.

Sirens sounded as the storm reached Ottumwa. There was no tornado, but the city also uses the sirens to warn of strong winds.