Tornadoes can touch down at any point during the year in Texas, but right now we're in the middle of when they're most active. Here's what you need to know.

What is the Difference Between F Tornado and EF Tornado?

For years you probably heard about a F then a number tornado touching down in Texas. That F stands for the Fujita Scale. Dr. Theodore (Ted) Fujita developed a way to measure tornadoes back in 1971. However, since 2007, we have adopted the EF Scale which stands for Enhanced Fujita Scale. This is the estimated calculated wind speed for a tornado in a three second burst. Obviously it can never be 100% accurate because we can't have someone standing directly next to a tornado measuring the speed. Here are the differences.

EF0 Tornado (65 to 85 MPH Wind Gusts)

EF1 Tornado (86 to 110 MPH Wind Gusts)

EF2 Tornado (111 to 135 MPH Wind Gusts)

EF3 Tornado (136 to 165 MPH Wind Gusts)

EF4 Tornado (166 to 200 MPH Wind Gusts)

EF5 Tornado (Anything Over 200 MPH Wind Gusts)

• EF0 and 1 are categorized as WEAK
• EF2 and 3 are categorized as STRONG
• EF4 and 5 are categorized as VIOLENT

How Many F5 Tornadoes Have Touched Down in Texas?

Tornado records only go back to 1950. Like I said, the Fujita scale was invented in 1971, but they went back and did previous storms. They believe the first F5 tornado touched down in Texas in Waco on May 11, 1953. Nearly 1/3 of a mile wide, the massive F5 tornado crossed Waco on a path that ran almost south to north, killing 114 persons and injuring 597. It destroyed around 600 homes and other buildings and damaged over 1000, including 2000 vehicles. Some of the survivors had to wait up to 14 hours for rescue.

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Stay safe and below I have some tips on what you should do if a tornado touches down near you.