Yes. Most tornadoes will cause some damage, even if it is minor. As with all places, most tornadoes in Pennsylvania are rated EF0 or EF1, with damage such as downed trees, damage roofs, and destroyed garages and barns. EF3 and stronger tornadoes are rare, but they have occurred. The worst tornadic event in Pennsylvania occurred on May 31, 1985 when more than two dozen tornadoes struck the state, including six rated F4, and an F5 that struck the towns of Wheatland and Hermitage.
From 2010 to 2011 there were 47 tornadoes in Pennsylvania.
As of September 26 there have been 10 confirmed tornadoes in Pennsylvania in 2012.
Yes, Pennsylvania does experience tornadoes. On average, Pennsylvania sees around 16 tornadoes per year, with the peak tornado season typically occurring in the late spring and summer months. Tornadoes in Pennsylvania can range from weak EF0 tornadoes to stronger EF2 tornadoes.
There were 11 tornadoes in Pennsylvania in 2005.
Tornadoes affect people by damaging and destroying property and by killing and injuring the people themselves.
The most damaging day for tornadoes in U.S. history was April 27, 2011 with damage totalling over $5 billion. This day also broke the record for most tornadoes in a 24-hour period with 207 tornadoes touching down.
The highest tornado activity in Pennsylvania is usually in June.
Yes, most notably the northwest area of Pennsylvania saw an unusually high number of tornadoes. Among these tornadoes was an EF0 tornado that struck Presque Isle State Park near Erie on June 27.
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.
Supercell thunderstorms are typically responsible for producing the most damaging tornadoes. These storms have the necessary conditions, such as wind shear and instability, to create strong and long-lived tornadoes. Supercells are known for their rotating updrafts, which can lead to the formation of violent and destructive tornadoes.
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.
Blizzards, tornadoes, and thunderstorms can all cause power outages by damaging or destroying power lines.