A space tornado can cause serious damage, usually 2-4 miles wide if it touches ground. But most of the time, it doesn't touches ground
it will damage a lot of homes
The damage from a tornado is usually more severe than that of a hurricane, but because a tornado covers a much smaller area, the total amount of damage from a tornado is usually less.
The cost of damage from the Waco tornado was $41 million.
The Joplin tornado caused about $2.8 billion worth of damage to the city of Joplin.
This happens fairly often. Such a tornado would be recorded if someone observed it, but there would be no damage. Such a tornado would be rated EF0.
a tornado in space
There is no such thing as a space tornado.
The cost of damage of the Tri-State tornado amounts to $16.5 million in 1925 values, equivalent to about $390 million today.
Typical damage from a tornado costs a few hundred thousand dollars. Costs in the millions are less common but tend to attract more attention.
The Moore, Oklahoma tornado of 1999 caused $1 billion worth of damage. This works out to $1.4 billion in 2014 amounts.
The largest tornado even recorded caused about $160 million dollars in damage, but keep in mind this wasn't the most damaging tornado or the strongest. The tornado with the strongest recorded winds caused $1 billion in damage (about $1.3 billion in today's dollars). The most damaging tornado recorded caused the equivalent of $1.7 billion in today's dollars.
No. A tornado is a vortex of air. There is no air in space.