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1953 Waco tornado outbreak; Tornado outbreak sequence of December 1–6, 1953; 1955 Great Plains tornado outbreak; List of tornadoes in the outbreak sequence of April 2–5, 1957; Tornado outbreak sequence of April 2–5, 1957; Tornado outbreak of May 24–25, 1957; Tornado outbreak sequence of June 20–23, 1957; May 1960 tornado outbreak sequence
An "EF-Unknown" (EFU) category was later added for tornadoes that cannot be rated due to a lack of damage evidence. [ 4 ] As with the Fujita scale, the Enhanced Fujita scale is a damage scale and only an estimate for actual wind speeds.
The 1977 Birmingham–Smithfield F5 tornado's damage was surveyed by Ted Fujita and he "toyed with the idea of rating the Smithfield tornado an F6". [13] In 2001, tornado expert Thomas P. Grazulis stated in his book F5–F6 Tornadoes; "In my opinion, if there ever was an F6 tornado caught on video, it was the Pampa, Texas tornado of 1995". [14]
Since 1950, there have been more than 9,700 tornadoes in Texas, killing hundreds and leaving behind billions of dollars worth of damage. On March 21, 2022, a tornado tore through Round Rock ...
Tornadoes are some of the most extreme weather events on Earth, and just like snowflakes, no two tornadoes are the same. No matter their shape or size, every type of twister can be dangerous, with ...
An EF-1 tornado touched down just outside El Campo, Texas, causing some damage to barns. A man working on a forklift in Wharton County at the time said he got an up-close look at one of the twisters.
In late 2023, American meteorologist and tornado expert Thomas P. Grazulis created the Outbreak Intensity Score (OIS) as a way to rank tornado outbreaks. [1] [2] For the score, only significant tornadoes are counted: F2/EF2 tornadoes receive 2 points each, F3/EF3 tornadoes receive 5 points each, F4/EF4 tornadoes receive 10 points each, and F5/EF5 tornadoes receive 15 points each. [1]
An F0 or EF0 tornado, the weakest category, damages trees, but not substantial structures. An F5 or EF5 tornado, the strongest category, rips buildings off their foundations and can deform large skyscrapers. The similar TORRO scale ranges from T0 for extremely weak tornadoes to T11 for the most powerful known tornadoes. [12]