The Fujita scale ranged from F0 having max gusts of <73 mph, F1 of 73-112 mph, F2 with 113-157 mph, F3 with 158-206 mph, F4 with 207-260 mph, and finally, F5, indicating speeds of up to 261-318 mph.

Tornadoes are rated from F0 to F5 on the Fujita scale, based on wind speed and damage. The scale was developed by Theodore Fujita of the University of Chicago.

The Fujita scale ranks tornado strength on a scale of 0 to 5, with zero the weakest and five the strongest. But many people in its path say they never got a tornado warning.

T he damage scale: Instead, tornado wind speeds are estimated through damage inspections after the storm. Theodore "Ted" Fujita was a pioneer in tornado research and post-storm damage surveys ...

Before 2007, tornado strength was measured using the Fujita Scale. This system relied on wind speeds alone, not counting the quality of building construction.

Two tornadoes developed out of supercells during the afternoon hours on Thursday, the 7th, with a surprise morning tornado ...

Five main tornadoes hit over a span of 2 hours 56 minutes. The scale uses damage as a proxy for tornado strength and ranks tornadoes from a 0 (weakest) to 5 (catastrophic).

The violent and deadly twister that leveled Rolling Fork, Mississippi, this weekend clocked in as a rare EF4 tornado on the Enhanced Fujita scale. At least 22 people were killed from this weekend ...

DES MOINES, Iowa (AP) — The National Weather Service says a tornado that hit Pocahontas County in northwest Iowa on April 9 has been given an EF4 rating on the tornado-strength-scale, with top ...

So that’s the bottom portion of the Enhanced Fujita tornado strength scale,” he says. The strongest tornado traveled through Keokuk and Washington counties. “That was rated as an EF-4.