On the first of April 1946 Alaska experienced one of its greatest tsunamis, triggered by an earthquake of magnitude 8.1 near Unimak Island in the Aleutian Island Chain. Lituya Bay a few weeks after the 1958 tsunami. April 1, 1946: The April Fools tsunami, triggered by an earthquake in Alaska, killed 159 people, mostly in Hawaii ; The 1946 Aleutian Islands earthquake occurred near the Aleutian Islands on April 1, 1946, and generated a Pacific-wide tsunami. Tsunamis may reach a maximum vertical height onshore above sea level, called a runup height, of 98 ft. (30 meters). But it was in 1958 that Lituya Bay’s unpredictable waters reared up in truly apocalyptic fashion. 1958 Lituya Bay Tsunami Description. Some 27,000 people died. Lituya bay tsunami deaths How much people died in the Lituya Bay tsunami . The biggest tsunami in present times struck at Lituya Bay, Alaska on July 9, 1958. The areas of destroyed forest along the shorelines are clearly recognizable as the light areas rimming the bay. April 1, 1946: The April Fools tsunami, triggered by an The tsunami was triggered by an 8.3 magnitude earthquake, triggering a tsunami … Flooding tsunami waves tend to carry loose objects and people out to sea when they retreat. This was so big that it is known scientifically as a megatsunami. 1 in Hilo Harbor, Hawaii. This tsunami is analogous to the tallest ever recorded tsunami, which hit Lituya Bay, Alaska in 1958. Some 27,000 people died. A notable exception is the landslide-generated tsunami in Lituya Bay, Alaska in 1958, which produced a 1722 ft. wave (525 m). April 1, 1946: The April Fools tsunami, 1958: Regarded as the largest recorded in modern times, the tsunami in Lituya Bay, Alaska was caused by a landslide triggered by an 8.3 magnitude. A tsunami with a record run-up height of 1720 feet occurred in Lituya Bay, Alaska. The wave was brought on by an enormous 8.3 magnitude earthquake that hit the Fairweather Fault and caused a massive earth landslide. On July 10, 1958, a magnitude 7.7 earthquake occurred on the Fairweather Fault in southeast Alaska. April 1, 1946: The , triggered by an earthquake in Alaska, killed 159 people, ... the tsunami in Lituya Bay, Alaska was caused by a landslide triggered by an 8.3 magnitude earthquake. It caused significant geologic changes in the region, including areas that experienced uplift and subsidence. After a 7.8 earthquake throttled the nearby Fairweather Fault, a rockslide sent 90 million tons of rock plunging into the bay—an amount equivalent to 8 million dump truck loads. Another tsunami wave hit in 1936. The tsunami of April 1, 1946 broke over Pier No. Lituya bay mega tsunami 1946 Lituya Bay's Apocalyptic Wave - NAS . The man in the foreground (lower left) became one of the 159 deaths on the islands. 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