earthquake, Morgan Hill

A preliminary 2.9 magnitude earthquake struck near Morgan Hill Tuesday morning, according to the United States Geological Survey. The quake, which struck at 10:12 a.m., was centered 7.1 miles ...
Figure 1: Location of tweets posted in the first 120 seconds after the 30 March 2009 magnitude 4.3 earthquake at Morgan Hill, California. Several groups are grappling with the best use of ...