|Active:||October 17-21, 2016|
|Duration of tornado outbreak1:||4 days|
|Maximum rated tornado2:||EF5 tornado|
|Fatalities:||54 deaths, 301 injuries|
|Areas affected:||United States and Canada|
1Time from first tornado to last tornado
The outbreak sequence was caused by a frontal boundary colliding with a dry line over the Central Plains of the US. The outbreak began around midday on October 17th, and over the next 4 days, the dryline enabled numerous supercells to develop over the areas affected by the outbreak. When the cap had reestablished itself, the outbreak was able to come to an end, ending the tornado outbreak sequence as a result of this.