According to the Gun Violence Archive, a nonprofit that tracks shootings in the US, there were 340 mass shootings in 2018. To put this into perspective, the US has had nearly as many mass shootings as days in the year.

Americans are more likely to die from gun violence than many leading causes of death combined, with some 11,000 people in the US killed in firearm assaults each year. Gun Violence Archive data shows that more than 14,000 people died from gun-related violence in the US in 2018, and more than 28,000 others were injured.

Mass shootings specifically accounted for 373 deaths and 1,346 injuries in 2018.

There is no broadly accepted definition of a mass shooting. The Gun Violence Archive defines a mass shooting as a single incident in which four or more people, not including the shooter, are "shot and/or killed" at "the same general time and location."

The government also doesn't have an official definition. In 2013, a report from the Congressional Research Service, known as Congress' think tank, described mass shootings as those in which shooters "select victims somewhat indiscriminately" and involve four or more deaths — a higher bar than the Gun Violence Archive's, as it doesn't take injuries into account.

Earlier in 2013, a federal mandate identified the threshold as three or more deaths.

Here's a complete list of the mass shootings, as defined by the Gun Violence Archive, that occurred in the US in 2018:

You can view a report of any incident by visiting the list on the Gun Violence Archive's website.