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The tornadoes in April of 2011 happened in much the same way that most U.S. tornadoes do, especially since April often sees large numbers of tornadoes. These tornadoes typically arise as storm systems develop along boundaries of contrasting temperature. The storms systems cause cool air from Canada and/or dry air from the Rockies to collide with warm, moist air from the Gulf of Mexico. This causes thunderstorms to develop. Strong upper level winds then create wind shear that sets the storms rotating, giving them the potential to produce tornadoes.
As a result of a La Niña that was occurring at the time, North America was struck be a series of powerful storm systems, starting in October of 2010 and continuing through winter until April of 2011. In the winter these storms were primarily blizzards, but when warmer air came in for the spring they started producing severe thunderstorms and tornadoes.
Of the 758 tornadoes confirmed in the U.S. in April of 2011, 528 were the result of two storm systems. The first system ignited thunderstorms along a cold front and dry line, producing 178 tornadoes from April 14 until April 16 mostly impacting Oklahoma, the Deep South, and North Carolina. The second system. The second system was the doozy, producing a record 350 tornadoes in the U.S. from April 25 until 28. This culminated on April 27 in the Deep South with a combination of instability and wind shear not seen for decades, a condition extremely favorable for violent tornadoes.
What else can I help you with?
How many tornadoes on April 9th 2011?
There were 19 tornadoes recorded in the U.S. on April 9, 2011.
How many people died this month April 2011 from tornadoes?
Tornadoes in April 2011 killed 363 people.
How many tornadoes in April 2011?
There were 758 confirmed tornadoes in the U.S. in April 2011, a record high. Worldwide statistics are not available.
How many tornadoes hit on April 27 2011?
There were 208 tornadoes recorded on April 27, 2011, the most ever in a single day.
Do tornadoes happen between April and July?
they can happen all year round.
When did the Tornadoes happen in the US?
Tornadoes have happened almost month of every year in the United States. If you are referring to the most recent outbreak of tornadoes it lasted from April 14-16, 2011. If you are asking about another incident, please be more specific.
When are there tornadoes in Kansas?
Tornadoes can happen in Kansas at any time, but they are most common in the months of April, May, and June.
How did the April 2011 tornadoes affect people?
The tornadoes of April 2011 were devastating. In the U.S. thousands of people lost their home and many more suffered some degree of property damage. These tornadoes killed 363 people and injured more than 3,500.
What time of year does a tornado usually happen?
Tornadoes usually happen in the months; April, May, and June.
What was the date of the 2011 Alabama tornadoes?
Alabama has had several days with tornadoes in 2011. The most significant by far was April 27 when 62 tornadoes struck in the state killing over 200. April 15 was also a significant day for tornadoes with 45 tornadoes hitting the state. In addition to these events tornadoes also occurred in Alabama on 7 other days but the damage was not particularly severe.
Did tornadoes happen this year?
Yes. The U.S. has recorded over 1100 tornadoes so far in 2011. More tornadoes have occurred in other parts of the world.
What year the US had the most tornadoes in one day?
That record is held by April 27, 2011 on which 207 tornadoes struck the U.S.
