There do not appear to be any records of tornadoes hitting Greensboro. In any given year most towns will not be hit by a tornado.
The U.S. had 1282 tornadoes in 2010.
There were 1692 confirmed tornadoes last year of which at least 1492 caused some damage.
There were 8 tornadoes in California in 2010.
There were 1692 confirmed tornadoes in the U.S. in 2011.
There were 1156 confirmed tornadoes in the U.S. in 2009.
About 30 tornadoes per year.
In the latest five-year period (not counting 2011 as statistics are not finalized) the U.S. experienced 6329 tornadoes.
about 80 tornadoes each year
well they have about 3 tornadoes each year
Australia has about 80 tornadoes every year.
On average there are about 57 tornadoes a year
over a 1000 and a 1000 tornadoes are on average per year