it didn't
1964
The tsunami that severely impacted Seward, Alaska occurred on March 27, 1964. This devastating event was triggered by the Great Alaska Earthquake, which remains one of the most powerful earthquakes ever recorded.
Perhaps the most famous, and possibly the last major tsunami in the USA was from the 1964 Alaska earthquake with a resulting tsunami hitting Alaska, and traveling as far a Hawaii and the Oregon/Washington coast.http://en.wikipedia.org/wiki/1964_Alaska_earthquakehttp://ezinearticles.com/?Alaska-Earthquake-and-Tsunami,-1964&id=9558Another Tsunami was the Lituya Bay, Alaska Tsunami in 1958.http://geology.com/records/biggest-tsunami.shtmlSince the Alaska Earthquake in 1964 and the resulting Tsunami, the West Coast of the USA has had a Tsunami early warning system with emergency evacuation plans. There have been a couple of alarms from earthquakes, but no significant waves.Unfortunately, due to human nature, many people flocked to the coast after recent tsunami warnings.
20 miles per hour
the tsunami hit alaska lity bay in july 9,1958 and the tsunami was about 1,720 feet tall
The most destructive tsunami in United States history was in 1964 when a magnitude 9.2 earthquake in Alaska triggered a tsunami along the West Coast. It caused significant damage in Alaska, Oregon, and California, resulting in loss of life and widespread destruction.
Yes, tsunamis can occur in Alaska due to its location along the Pacific Ring of Fire, a region prone to tectonic activity that can trigger underwater earthquakes and landslides, resulting in tsunamis. Alaska has experienced tsunamis in the past, including the devastating 1964 Great Alaska earthquake and tsunami.
the tsunami hit in Lituya Bay, Alaska
There have been several tsunamis in Alaska.
The highest tsunami in Eureka, California was recorded at around 21.3 feet on March 28, 1964. It was caused by the Great Alaska Earthquake, which triggered tsunamis along the West Coast of the United States.
The 1964 Alaska earthquake (March 27, 1964) had its epicentre in Prince William Sound near Anchorage. The earthquake had a magnitude of 9.2 making it the largest ever to occur in the US, and the 3rd largest ever recorded by seismometer.
Nine were killed by the earthquake itself but the tsunami it caused resulted in other deaths as far away as California.