7.4-Magnitude Earthquake in Indonesia Prompts Tsunami Alerts

A 7.4-magnitude earthquake struck about 79 miles northwest of Ternate, Indonesia, and the U.S. Geological Survey reported hazardous tsunami waves were forecast and that tsunami waves had been observed.

A 7.4-magnitude earthquake struck near Indonesia on Wednesday evening, the U.S. Geological Survey reported. The agency said hazardous tsunami waves were forecast for some coasts and that tsunami waves had been observed. The quake occurred at 6:48 p.m. Eastern, about 79 miles northwest of Ternate. Seismologists are reviewing available data and said they may revise the reported magnitude or update the shake-severity map. Known details: - Reported magnitude by the U.S. Geological Survey: 7.4. - Location and time: about 79 miles northwest of Ternate at 6:48 p.m. Eastern. - Tsunami information: hazardous tsunami waves were forecast for some coasts and tsunami waves were observed. - Next procedural step: seismologists are reviewing data and may revise the magnitude and update the shake-severity map; aftershocks can occur. Summary: Officials reported a strong earthquake with tsunami forecasts and observed waves, and coastal areas were placed under alert. Seismologists are reviewing additional data and may revise the earthquake's reported magnitude and update the shake-severity map. Further seismic activity such as aftershocks remains possible.