I grew up in Oklahoma, but I can’t claim to have felt an earthquake in the state until I moved back in 2014. A series of earthquakes in the last few weeks prompted me to find a data set and take a look in Tableau. I wanted to see how the number of earthquakes has changed over time and where they are occurring. Below is the viz I came up with, highlighting the change in earthquake frequency in 2015. Click through the tabs in the storyboard and mouse over the visuals to see why 2015 was a record year for earthquakes – even with a 600% drop in the number of earthquakes per month from June to December:
