Earthquake Swarm at California-Mexico Border

It's been shaky down at the border with the biggest earthquake, a 5.8 magnitude one, occurring last week. The LA Times today notes that the region down at the border continues to shake, meaning only one thing, use of phrase "earthquake swarm." We've seen swarms before in 2009: One in Inyo County in early October and the most notable in March around the Salton Sea.