Japan has experienced its most powerful earthquake in 140 years. The tremor, measuring 8.9 on the Richter scale, struck early Tuesday morning near Miyagi Prefecture on the northeast coast. The quake persisted for over a minute, causing buildings to shake violently as far away as Tokyo, which is over 300 kilometers distant.

Seismic alarms warned many residents, facilitating evacuations; however, more than 3,000 fatalities have been confirmed, with thousands still unaccounted for. A significant tsunami ensued, with waves exceeding 10 meters inundating coastal towns and carrying homes, vehicles, and boats inland.

The Prime Minister of Japan has declared a national disaster and has called for calm, stating, “This is a disaster of historic magnitude. However, Japan has recovered before, and it will do so again.” Hospitals are overwhelmed, and over 1.5 million households are without electricity. Essential supplies such as food and water are in short supply.

Rescue operations are being conducted by Japan’s Self-Defense Forces alongside international teams. A primary concern is the damage inflicted on nuclear facilities, particularly Fukushima, where cooling systems have been critically impacted. A 20-kilometer exclusion zone around Fukushima has been established due to concerns regarding potential radioactive leaks.

A 9.1 magnitude earthquake that caused a devastating tsunami has occurred twice in recent history:

  1. The 2004 Indian Ocean Earthquake and Tsunami: On December 26, 2004, a magnitude 9.1 (or 9.2-9.3 by some estimates) undersea megathrust earthquake struck off the west coast of Sumatra, Indonesia. This earthquake generated the deadliest tsunami in recorded history, which devastated coastal areas across 14 countries around the Indian Ocean. The hardest-hit city in Indonesia was Banda Aceh, which experienced catastrophic destruction and immense loss of life.
  2. The 2011 Tōhoku Earthquake and Tsunami: On March 11, 2011, a magnitude 9.1 earthquake occurred off the east coast of Honshu, Japan, near the Tōhoku region. This powerful earthquake triggered a massive tsunami that caused widespread devastation along Japan’s northeastern coast, notably impacting cities like Sendai and leading to the Fukushima Daiichi nuclear disaster.

Both of these events were incredibly powerful and resulted in catastrophic tsunamis affecting numerous coastal communities.

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