In early April, a prolific severe weather event produced 46 tornadoes and more than 1,200 reports of wind damage, setting the tone for the month.

However, another reversal took place afterward and much of June was fairly quiet, with the exception of an active period in the third week of the month which included a moderate tornado outbreak.

While initial severe weather was limited, a lone supercell broke out ahead of a mesoscale convective system in Pulaski County, Virginia on the eastern end of the warm front that evening.

[27] During the afternoon of April 9, supercells developed along the warm front and tracked through parts of Kentucky, Tennessee, Virginia, and North Carolina, generating softball sized hail and eight more tornadoes.

[37] Twelve of the North Carolina deaths took place in Bertie County; tornado emergencies were issued for Raleigh, Snow Hill, and Wilson at the height of the outbreak.

[37][38][39] Yet another severe weather event developed across the Midwest and southern Great Plains on April 19 as another dynamic low pressure system tracked across the area.

Overnight, the squall line tracked eastward with widespread wind damage and many embedded tornadoes across several states, a few as strong as EF2 but most were brief and weak.

A large outbreak was possible for April 25–27 as the SPC issued a moderate risk of severe weather for three consecutive days, centered over Arkansas through Tennessee.

At 3:25 pm CST (2025 UTC), the SPC issued a PDS tornado watch for much of Arkansas and parts of Missouri, Oklahoma, Texas and Louisiana.

On April 27, President Barack Obama approved Governor Robert Bentley's request for emergency federal assistance including search and rescue support.

On April 28, 2011, the National Weather Service sent out people to survey the damage; however, with the large number of tornadoes across Alabama, the reports were not finalized for months.

On a lesser note, an F0 tornado (the Fujita scale was still used in Canada) downed trees and ripped siding off store buildings in Fergus, Ontario on April 27.

[47] On May 9, a strong upper-level ridge over the Mississippi River Valley produced a narrow axis of extreme instability from eastern Nebraska to central South Dakota.

[55] Continuing eastward, the low became diffuse and produced scattered severe weather on May 12, 13, and 14, with tornadoes confirmed in Nebraska, Illinois, Louisiana, and Ohio.

Late in the afternoon on May 24, supercells began forming over western Kansas and Oklahoma, as the National Weather Service predicted a dangerous tornado outbreak.

[63] On May 26, strong thunderstorms travelled through the Cumberland Valley in South Central Pennsylvania with reports of EF1 tornadoes near Carlisle, Mechanicsburg, and Hershey.

[69][70] A final EF1 tornado moved through Bay County, Michigan, on May 31 to end the month, with several homes sustaining minor damage.

By the early afternoon, a tornado watch was issued for parts of Connecticut, Massachusetts, Maine, New Hampshire, New Jersey, New York, Pennsylvania and Rhode Island.

That afternoon, an EF3 tornado occurred in downtown Springfield, Massachusetts and continued east for 39 miles devastating the towns of Westfield, Wilbraham, Monson, Brimfield, Sturbridge, Southbridge and Charlton.

Around 1:00 p.m. local time, storm chasers reported a large EF3 tornado on the ground north of Hill City, Kansas and again later that afternoon near Elm Creek, Nebraska.

Additionally, a major derecho event may develop farther south – a PDS Severe Thunderstorm Watch was issued for parts of Oklahoma and North Texas as well.

On the 21st, tornado watches were issued for several areas, including central Minnesota and Wisconsin, southern Illinois and parts of Missouri, and lower Michigan.

The outer bands and core of Hurricane Irene produced numerous tornadoes as it made landfall in North Carolina and tracked northward.

A moderate risk of severe weather, a rare occurrence when associated with a tropical cyclone, was issued for September 5 in Alabama and Georgia, with numerous tornadoes possible.

[90]A series of tornadoes transpired across the south-central United States, particularly Texas, Oklahoma, and Louisiana, on November 7 and 8 as a storm system tracked across the region.

[96] During the afternoon, one long-track tornado began southwest of Auburn, Alabama and travelled 61 miles (98 km) across the Georgia state line into the Hamilton area.

The strongest of the tornadoes, an EF3 in Georgia on December 22, resulted in severe damage in parts of Floyd and Gordon counties, including houses destroyed.

The Meteorological Service of New Zealand Limited (MetService) mentioned the possibility of strong thunderstorms being embedded within the line, producing small hail and gusty winds.

Significant upward motion in the atmosphere developed in the region surrounding Auckland, prompting the MetService to issue a high-risk of thunderstorms in the area.

[125][126] The outer north-western suburbs of Melbourne, Australia were hit by three reported tornadoes on Christmas Day after a series of severe thunderstorms moved through the city.