From 2010 to 2011 there were 47 tornadoes in Pennsylvania.
As of September 26 there have been 10 confirmed tornadoes in Pennsylvania in 2012.
Since official record began in 1950 through 2013, there have been a total of 738 tornadoes recorded in Pennsylvania. Final data for 2014 has not yet been published. The actual number of tornadoes is probably significantly higher than this, as we missed many of the weaker tornadoes in the early part of this period. If you are referring to a specific event in which tornadoes struck Pennsylvania, please specify in a separate question.
There were 11 tornadoes in Pennsylvania in 2005.
Since record keeping began in 1950 there have been 717 tornadoes recorded in Pennsylvania, However, the actual number of tornadoes is likely higher than this as prior to the 1990s a significant number of the weaker tornadoes (which account for 89% of tornadoes as a whole) were missed.
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There have been many thousands of tornadoes in the United states. This country averages over 1000 tornadoes every year.
The number of tornadoes in a year can vary greatly. On average, the United States experiences about 1,000 tornadoes annually, but this number can be higher or lower depending on various factors such as weather patterns and climate conditions.
There were 102 tornadoes in Oklahoma in 2010.
yes tornadoes and dust devils are common in Africa
1091 tornadoes have been confirmed in Georgia since 1970.
In the years 2000-2010 there have been 13,817 tornadoes confirmed in the United States.
There were 4 recorded tornadoes in Delaware County Pennsylvania in this time period. The actual number of tornadoes is probably higher, though as some weak tornadoes in the earlier part of this period were probably missed.