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A helicopter flies over the port of Sendai to deliver food to survivors of the earthquake and tsunami.

On 11 March 2011, at 14:46 JST (05:46 UTC), a Mw 9.0–9.1 undersea megathrust earthquake occurred in the Pacific Ocean, 72 km (45 mi) east of the Oshika Peninsula of the Tōhoku region. It lasted approximately six minutes and caused a tsunami. It is sometimes known in Japan as the "Great East Japan Earthquake" (東日本大震災, Higashi nihon daishinsai), among other names. The disaster is often referred to by its numerical date, 3.11 (read san ten ichi-ichi in Japanese).

It was the most powerful earthquake ever recorded in Japan, and the fourth most powerful earthquake recorded in the world since modern seismography began in 1900. The earthquake triggered powerful tsunami waves that may have reached heights of up to 40.5 meters (133 ft) in Miyako in Tōhoku's Iwate Prefecture, and which, in the Sendai area, traveled at 700 km/h (435 mph) and up to 10 km (6 mi) inland. Residents of Sendai had only eight to ten minutes of warning, and more than a hundred evacuation sites were washed away. The snowfall which accompanied the tsunami and the freezing temperature hindered rescue works greatly; for instance, Ishinomaki, the city with the most deaths, was 0 °C (32 °F) as the tsunami hit. The official figures released in 2021 reported 19,759 deaths,[1] 6,242 injured,[2] and 2,553 people missing,[3] and a report from 2015 indicated 228,863 people were still living away from their home in either temporary housing or due to permanent relocation. (Full article...)

  1. ^ "平成23年(2011年)東北地方太平洋沖地震(東日本大震災)について(第162報)(令和4年3月8日)" [Press release no. 162 of the 2011 Tohuku earthquake] (PDF). 総務省消防庁災害対策本部 [Fire and Disaster Management Agency]. Archived from the original (PDF) on 2022-08-27. Retrieved 2022-09-23. Page 31 of the PDF file.
  2. ^ "平成23年(2011年)東北地方太平洋沖地震(東日本大震災)について(第162報)(令和4年3月8日)" [Press release no. 162 of the 2011 Tohuku earthquake] (PDF). 総務省消防庁災害対策本部 [Fire and Disaster Management Agency]. Archived from the original (PDF) on 2022-08-27. Retrieved 2022-09-23. Page 31 of the PDF file.
  3. ^ "平成23年(2011年)東北地方太平洋沖地震(東日本大震災)について(第162報)(令和4年3月8日)" [Press release no. 162 of the 2011 Tohuku earthquake] (PDF). 総務省消防庁災害対策本部 [Fire and Disaster Management Agency]. Archived from the original (PDF) on 2022-08-27. Retrieved 2022-09-23. Page 31 of the PDF file.