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When was the biggest tsunami in Alaska?

When was the biggest tsunami in Alaska?

July 9, 1958
Lituya Bay, Alaska, July 9, 1958 Its over 1,700-foot wave was the largest ever recorded for a tsunami. It inundated five square miles of land and cleared hundreds of thousands of trees. Remarkably, only two fatalities occurred.

How fast was the 1958 tsunami?

The 1958 Lituya Bay earthquake occurred on July 9 at 22:15:58 with a moment magnitude of 7.8 to 8.3 and a maximum Mercalli intensity of XI (Extreme)….1958 Lituya Bay earthquake and megatsunami.

Anchorage
UTC time 1958-07-10 06:15:58
Max. intensity XI (Extreme)
Tsunami 524 m (1,720 ft) runup
Casualties 5

What caused the 1958 tsunami?

On July 10, 1958, an earthquake Mw 8.3 along the Fairweather fault triggered a major subaerial landslide into Gilbert Inlet at the head of Lituya Bay on the southern coast of Alaska. The landslide impacted the water at high speed generating a giant tsunami and the highest wave runup in recorded history.

How big was the tsunami that hit Alaska?

1720 feet
A tsunami with a record run-up height of 1720 feet occurred in Lituya Bay, Alaska.

What is the tallest tsunami wave ever recorded?

100 feet
An earthquake followed by a landslide in 1958 in Alaska’s Lituya Bay generated a wave 100 feet high, the tallest tsunami ever documented. When the wave ran ashore, it snapped trees 1,700 feet upslope. Five deaths were recorded, but property damage was minimal because there were few cities or towns nearby.

What are the warning signs that a tsunami is coming?

GROUND SHAKING, a LOUD OCEAN ROAR, or the WATER RECEDING UNUSUALLY FAR exposing the sea floor are all nature’s warnings that a tsunami may be coming. If you observe any of these warning signs, immediately walk to higher ground or inland.

Where is the tsunami warning center in Alaska?

The National Tsunami Warning Center is located in Palmer, Ak. They open the doors to the public every Friday afternoon. They provide a wonderful briefing of how tsunamis are generated, and what action one should take.

What was the recent earthquake in Alaska?

The state has had at least six magnitude-5.0 quakes over the past four years. One of the most recent was Jan. 23, 2018 when a 7.9 earthquake hit the Gulf of Alaska . The second-largest earthquake ever recorded caused widespread damage when it hit Prince William Sound in March 1964 with a magnitude of 9.2,…

What is the largest tsunami wave ever recorded?

The largest wave ever noted was an earthquake-generated tsunami at Alaska’s Lituya Bay in 1958 that measured 30.5 metres, according to Smithsonian magazine. Surfers as far afield as California will benefit from huge swells generated from off the coast of New Zealand.

How big is the earthquake in Alaska?

The Great Alaska Earthquake lasted for nearly five minutes and registered a magnitude of 9.2, still the largest ever recorded in North America and second only to the 9.5-magnitude quake that struck Chile in 1960.