How fast do tornado wind speeds get up to?

On May 3, 1999 as tornadoes ravaged Oklahoma scientist measured the highest recorded wind speed at about 7:00 p.m. near Moore, Oklahoma. A wind speed of 302 mph was recorded where a tornado killed 38 people and destroyed 8,000 homes.

The Fujita Scale for tornadoes

F0 Gale tornado 40-72 mph

F1 Moderate tornado 73-112 mph

F2 Significant tornado 113-157 mph

F3 Severe tornado 158-206 mph

F4 Devastating tornado 207-260 mph

F5 Incredible tornado 261-318 mph