See the links below. The first is a list of confirmed F5 and EF5 tornadoes in the United States in the years 1950-present. In addition to these tornadoes there was also an F5 tornado in Elie, Manitoba (Canada) on June 22, 2007. Most of the tornadoes on the other list were also probably F5's including the Tri-State tornado.
The second link is a list of the 25 deadliest tornadoes in U.S. history, most of which would also count as the deadliest in world history. The deadliest tornado ever recorded anywhere was the Daulatpur-Salturia (Bangladesh) tornado of April 26, 1989 with over 1300 deaths.
Most likely yes. Tornadoes have occurred in Brazil.
The strongest tornadoes produce the fastest winds of any storm on earth, but tornadoes are small compared to most storms.
Tornadoes have occurred in most areas of Missouri. No town is safe.
Very powerful tornadoes are often about 20,000 feet tall.
It depends on the tornado. In most tornadoes the strongest winds are near the center. In multivortex tornadoes, however, the strongest winds are in the subvorticies, which are almost like smaller tornadoes within a larger one.
There is actually a good deal of overlap. The winds of most hurricanes and tornadoes and hurricanes fall into the same range. However, the strongest tornadoes have faster winds than the strongest hurricanes.
Tornadoes have occurred in all 50 U.S. states. In the U.S. tornadoes are generally most common and strongest in the central and southeastern regions. The primary reasons is that cold fronts meeting warm, moist air from the Gulf of Mexico frequently trigger strong thunderstorms. Wind shear then gives these storms the rotation they need to produce tornadoes.
There is some overlap, especially considering that a hurricane is a kind of cyclone. However, in the most extreme cases, the most violent tornadoes produce far stronger winds than the strongest hurricanes.
Most of the tornadoes in California are weak , though a few strong ones have occurred, some as strong as F3.
It is the tornado outbreak of April 25-28, 2011 which produced 359 tornadoes, of which 207 occurred on April 27.
Yes. Tornadoes are not as large as other storms, but the strongest may produce winds in excess of 300 miles per hour.
Most of the strongest tornadoes on record (those rated F5 or EF5) have occured in Tornado Alley in the United States, particularly in Texas, Kansas, and Oklahoma. Though, a few such as the Xenia, Ohio F5 of 1974 occurred outside that region. The fastest winds on record (302 mph +/- 20) were measured in the F5 that struck Moore, Oklahoma on May 3, 1999. However, direct wind measurements are rares, so other tornadoes may have been stronger.