A dispatcher at the sheriff 's office in Las Animas County , which includes Cokedale , said the quake lasted almost 30 seconds . The 5.3-magnitude quake ties a landslide in Wyoming . The earthquake is one of several to hit the area Tuesday . The earthquake is seven miles southwest of Casper . There were no immediate reports of casualties .
The 5.3-magnitude quake ties a landslide in Wyoming . The earthquake is one of several to hit the area Tuesday . The earthquake is seven miles southwest of Casper . There were no immediate reports of casualties .