A powerful earthquake trembled Mexico this morning. The tremor continued minutes and measured 7.3. Its center was off the coast near Guatemala. The jolt arrived at 11:10am local time. Intense shaking spread fast. Tsunami alerts went up at once. Mexico and Guatemala faced alerts for large waves. People along the shore moved quickly to higher ground. Aftershocks continued, some strong. The biggest aftershock topped 5.0. No major damage or injuries reported yet. Homes and streets stayed quiet in Chiapas and nearby areas. Tsunami alerts stayed up for hours. They were later cancelled as seas stayed calm.