OKLAHOMA CITY (AP) – A tornado that killed six people in

northwestern Oklahoma traveled about 31 miles and had winds of 136

to 165 mph at its peak.

The National Weather Service on Monday assigned a preliminary

EF-3 Enhanced Fujita scale rating to the storm after conducting

damage surveys.

Forecasters say the tornado developed about 11:50 p.m. Saturday

near Arnett in Ellis County and damaged six structures.

Once the storm reached neighboring Woodward County, it downed

trees and power lines before hitting two mobile homes and killing

three people.

When it crossed into southwest Woodward, the storm damaged homes

and businesses as it tracked to the northeast. In northern

Woodward, three people were killed when the tornado struck a mobile

home park.

The tornado exited Woodward about 12:23 a.m. and dissipated at

12:27 a.m. Sunday.