There were several major tornado outbreaks in April 2011, but you are most likely referring to the outbreak of April 25-28 2011. The outbreak of April 22-25 2010 doesn't even compare.
Lets compare the figures.
April 22-25 2010:
Worst tornado: EF4 in Yazoo City, Mississippi that killed 10, injured 146, and caused about $350 million in damage
April 25-28 2011
Worst tornadoes
April 25-28 2011 was the largest, most destructive, and 4th deadliest tornado outbreak in U.S. history.
It was definitely worse than the April 22-25, 2010 tornado outbreak. That outbreak resulted in 12 deaths, of which 10 were from tornadoes (one tornado actually). Preliminary reports indicate that the March 2, 2012 tornado outbreak killed at least 40 people. Hundreds are said to be injured. Damage is estimated at $1.5 billion. This outbreak is probably one of the worst outbreaks of recent history. The severity is comparable to the Super Tuesday outbreak of February 2008.
There were 10 people killed when tornado strikes Mississippi on April 24, 2010.
According to estimates, the cholera outbreak in Haiti from 2010 to 2020 resulted in approximately 10,000 deaths.
The volcano that exploded in Iceland on April 14, 2010, is Eyjafjallajökull.
Eyjafjallajökull VolcanoThe volcano that erupted in Iceland on April 14, 2010, is the Eyjafjallajökull.
10 people died on April 24, 2010 from a tornado in Mississippi.
It was definitely worse than the April 22-25, 2010 tornado outbreak. That outbreak resulted in 12 deaths, of which 10 were from tornadoes (one tornado actually). Preliminary reports indicate that the March 2, 2012 tornado outbreak killed at least 40 people. Hundreds are said to be injured. Damage is estimated at $1.5 billion. This outbreak is probably one of the worst outbreaks of recent history. The severity is comparable to the Super Tuesday outbreak of February 2008.
The largest tornado outbreak on record in Minnesota was the outbreak of June 16-17, 2010. This outbreak produced 83 tornadoes of which 48 struck Minnesota.
There were 10 people killed when tornado strikes Mississippi on April 24, 2010.
Below are the links to the video that shows the destruction caused by the tornado in Mississippi on April 24 2010.
The worst tornado damage of 2010 appears to have been in Mississippi, particularly from long-track EF4 tornado that move across the state on April 22.
It is impossible to make such a prediction. Even if we could accurately predict the intensity of the outbreak, how bad it will be also depends on where severe weather events occur. A major tornado outbreak can occur, but high casualties are not likely if major tornadoes stay in rural areas and don't hit communities.
As of October 9, 2010 the last tornadoes to occur were in a small outbreak of 7 tornadoes in Arizona on October 6.
The largest tornado to hit Mississippi was the Yazoo City, Mississippi tornado of April 24, 2010. It was 1.75 miles wide.
There were no confirmed tornadoes in Indiana on April 25, 2010.
Storm Stories - 2003 Murfreesboro Tornado was released on: USA: 3 April 2010
Storm Stories - 2003 Tornado Chasers was released on: USA: 5 April 2010