The Enhanced Fujita or EF Scale is the system meteorologists use to estimate tornado strength by examining the damage it ...

Tornadoes rated EF5 are inconceivable. They raze the Earth with winds exceeding 200 mph, sweeping foundations bare and peeling the bark off trees. Some pry pavement off roadways, scouring into the ...

Add Yahoo as a preferred source to see more of our stories on Google. North Dakota Gov. Kelly Armstrong walks by silos damaged by an EF5 tornado in Enderlin, N.D., on June 25. New York has seen its ...

Measuring the strength of a tornado can be difficult based on sight alone, and weather instruments could easily be damaged by the strong winds. The Enhanced Fujita scale (EF-Scale) looks at the damage ...

You're all familiar with the Enhanced Fujita Scale or EF Scale, which became operational on February 1, 2007, is used to assign a tornado a 'rating' based on estimated wind speeds and related damage.

When using the Enhanced Fujita Scale to determine the tornado's EF-rating, begin with the 28 Damage Indicators on the scale. Each one of these indicators have a description of the typical construction ...

A deadly tornado that tore across southeastern North Dakota this summer has been upgraded to an EF5 with winds topping 200 mph, the strongest classification of tornado and the first confirmed on ...

The National Weather Service has released their damage survey following Monday's severe weather in the Houston area. One touched down in Riata Ranch subdivision, near Cypress, and the other touched ...

A brief tornado touched down at approximately 8:45 p.m. on Aug. 12, just west of state Route 528 and south of Burton-Windsor Road in Huntsburg Township, located roughly three miles northeast of ...