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Maps generated using Tsunami Travel Time (TTT) software: calculates first-arrival travel times on a grid for a tsunami generated at an earthquake epicenter
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Map contours: 1-hour intervals:
- Red: 1-4 hour arrival times
- Yellow: 5-6 hour arrival times
- Green: 7-14 hour arrival times
- Blue: 15-21 hour arrival times
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Maps were generated from earthquake epicenters in the NCEI Global Historical Tsunami Database using NCEI 2-Minute Gridded Global Relief Data bathymetry
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NOTE: Maps do not provide the height or the strength of the wave, only the arrival times
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"Event Details" links to runups (observed wave locations). In some cases, runups have observed tsunami arrival times, which can be compared with the map calculated arrival times. Calculated times are usually within 1 hour of the observed travel times, but can differ by more than 1 hour, particularly when the location is across the Pacific Basin (why times may be different)
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A large earthquake, Modified Mercalli Intensity XI, in Lisbon, Portugal, caused damage to north of Granada, Spain. The earthquake generated a tsunami that affected the coasts of Portugal, Spain, North Africa, and the Caribbean. The tsunami reached Lisbon about 20 minutes after the first destructive shock. It rose to about 6 meters at many points along the Portuguese coast and reached 12 meters in some places. It also affected the coast of Morocco where the streets of Safi were flooded. The tsunami reached Antigua about 9.3 hours after the earthquake. Later waves, with estimated runup heights of 7 meters, were observed at Saba, Netherlands, Antilles. The earthquake and tsunami killed between 60,000 and 100,000 people.
Event Details (NCEI Global Historical Tsunami Database)
A magnitude 7.3 Mw earthquake on October 11, 1918, in the Mona Passage, west of Puerto Rico, was caused by displacement along four segments of a normal fault, oriented N-S in the Mona Canyon. The earthquake generated a tsunami with runup heights reaching 6 meters, causing extensive damage along the western and northern coasts of Puerto Rico. The earthquake and tsunami caused $29 million damage, 116 people were killed and 100 were reported missing.
Event Details (NCEI Global Historical Tsunami Database)
On November 18, 1929 a magnitude 7.4 Mw earthquake occurred 250 km south of Newfoundland along the southern edge of the Grand Banks, Canada. The earthquake was felt as far away as New York and Montreal. It triggered a large submarine slump which ruptured 12 transatlantic cables in multiple places and generated a tsunami. The tsunami was recorded along the east coast of Canada and the U.S., as far south as Martinique in the Caribbean, and across the Atlantic Ocean in Portugal. The tsunami caused an estimated $1 million damage and 28 deaths in Newfoundland, Canada.
Event Details (NCEI Global Historical Tsunami Database)
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The explosion of the Krakatau Volcano in Indonesia on August 27, 1883, generated a 30 meter tsunami in the Sunda Strait which killed about 36,000 people. It also caused an atmospheric pressure wave that was recorded on the tide gauges at remote locations including South Georgia Island, Panama, France, England, Alaska, Hawaii, and San Francisco. Due to the shadowing by continents and island groups, a direct tsunami could not have reached most of these locations. Atmospheric gravity waves occurred which may have excited water waves by transferring energy into the ocean. It was recorded with an amplitude of six inches at Sausalito, California.
Event Details (NCEI Global Historical Tsunami Database) |
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A magnitude 9.1 Mw earthquake occurred off the west coast of Sumatra, Indonesia, on December 26, 2004. It was the fourth largest earthquake in the world since 1900 and the largest since the 1964 Prince William Sound, Alaska, earthquake.
The earthquake generated a tsunami that caused more casualties than any other in recorded history. The tsunami was recorded nearly world-wide on tide gauges in the Indian, Pacific and Atlantic Oceans. In total, more than 227,898 people were killed or missing and 1,126,900 were displaced by the earthquake and subsequent tsunami in 14 countries in South Asia and East Africa.
Event Details (NCEI Global Historical Tsunami Database) |
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The February 3, 1923 magnitude 8.3 Mw earthquake off
the east coast of Kamchatka, Russia, generated an 8-meter tsunami that caused damage in Kamchatka
and in Hawaii. It was also observed in Japan and California.
Event Details (NCEI Global Historical Tsunami Database) |
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The 1944 Pacific-wide tsunami was caused by a magnitude 8.1 Mw earthquake that occurred off the southeast coast of Kii Peninsula, Japan. The earthquake and resulting tsunami caused great destruction and loss of life. About 998 people were killed, 2135 people were seriously injured, 26,135 homes were totally destroyed, 46,950 homes were partially destroyed, and 3,059 homes were washed away. The tsunami was observed on tide gauges in the Hawaiian and Aleutian Islands.
Event Details (NCEI Global Historical Tsunami Database) |
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The April 1, 1946 Pacific-wide tsunami was caused by a magnitude 7.3 Ms earthquake that occurred south of Unimak Island, Alaska. Hawaii experienced the worst damage, with 159 deaths (96 at Hilo) and $26 million in property loss. Total property damage in Alaska was $250,000 while California experienced one death and $10,000 damage from the tsunami. These events led to the development of tsunami travel time charts for the Pacific and the Pacific Tsunami Warning Service.
Event Details (NCEI Global Historical Tsunami Database) |
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A catastrophic magnitude 8.1 Mw earthquake on December 20, 1946 on the south coast of Honshu,
Japan was felt almost everywhere in the central and western parts of the country. The number of
homes destroyed directly by the earthquake was 2,598; 1,443 people died. In addition, 1,451 homes
were washed away by the ensuing tsunami waves. The tsunami was observed on tide gauges in
California, Hawaii and Peru. (Reference #414)
Event Details (NCEI Global Historical Tsunami Database) |
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The magnitude 8.1 Mw earthquake and tsunami on March 4, 1952 off the coast of Hokkaido, Japan, did major damage in Japan. 815 homes were completely destroyed, 1,324 were partially destroyed, 6,395 were slightly damaged, 14 were burned, 91 were washed away, 328 homes and 1,621 non-residential buildings were flooded. Many ships were destroyed, and roads and railway lines were damaged. Twenty-eight people died, 5 people were missing and 287 people were injured in Japan. The tsunami was observed on tide gauges in Hawaii, the west coast of the United States, Alaska, Peru, the Marshall Islands, and Palau.
Event Details (NCEI Global Historical Tsunami Database) |
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The magnitude 9.0 Mw earthquake on November 4,
1952 off the east coast of Kamchatka generated a 13-meter wave locally. The waves struck the
Hawaiian Islands at 1:00 pm. Property damage from these waves in the Hawaiian Islands was
estimated at $800,000 to $1,000,000; however no lives were lost. It also caused damage on the
west coast of the United States and was observed on tide gauges throughout the Pacific Basin.
Event Details (NCEI Global Historical Tsunami Database) |
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The magnitude 9.1 Mw earthquake on March 9, 1957
south of the Andreanof Islands, Aleutian Islands, generated a tsunami that did severe damage on
Adak Island. However, the most damage (about $5 million) was done in the Hawaiian Islands. There
were two indirect fatalities, a reporter and a pilot, and injury to a photographer when their
small chartered plane crashed in the ocean near Oahu.
Event Details (NCEI Global Historical Tsunami Database) |
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On May 22, 1960 a Magnitude 9.5 Mw earthquake,
the largest earthquake ever instrumentally recorded, occurred in southern Chile. The series of
earthquakes that followed ravaged southern Chile and ruptured over a period of days a 1,000 km
section of the fault. The number of fatalities associated with both the earthquake and tsunami
has been estimated to be between 490 and 5,700. Reportedly there were 3,000 injured and
initially there were 717 missing in Chile. The main shock generated a tsunami that was not only
destructive along the coast of Chile, but also caused numerous casualties and property damage in
Hawaii and Japan, and was noticeable along shorelines throughout the Pacific Ocean area.
Event Details (NCEI Global Historical Tsunami Database) |
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March 28, 1964 Prince William Sound, Alaska |
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This magnitude 9.2 Mw earthquake and ensuing
tsunami caused 125 deaths and $311 million in property loss ($84 million and 106 deaths in Alaska).
It was felt over a large area of Alaska and in parts of western Yukon Territory and British
Columbia, its effects were heaviest in south central Alaska. The duration of the shock was
estimated at 3 minutes. Vertical displacement occurred over 525,000 sq km. About 20 landslide
tsunamis were generated; the tectonic tsunami devastated many towns along the Gulf of Alaska,
left serious damage in British Columbia, Hawaii, and along the west coast of the U.S. (15 killed),
and was recorded on tide gages in Cuba and Puerto Rico.
Event Details (NCEI Global Historical Tsunami Database) |
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A magnitude 8.2 Mw earthquake on May 16, 1968 off
the coast of Honshu Island caused destruction in Japan and generated a tsunami that was observed
by tide gauges in Japan and throughout the Pacific Basin. As a result of the earthquake and
tsunami, 52 people died and 329 people were injured; 676 homes were completely destroyed and
2,994 homes were partially destroyed; 13 homes burned down and 529 homes were flooded; 97 ships
were washed away and 30 were sunk. In addition, roads, bridges and protective dikes were destroyed.
Event Details (NCEI Global Historical Tsunami Database) |
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On November 29, 1975 a magnitude 7.2 Ms
earthquake on the southern coast of the Island of Hawaii generated a locally damaging submarine
landslide tsunami that was recorded at tide gauge stations in Alaska, California, Hawaii, Japan,
Galapagos Islands, Peru, and Chile. The tsunami caused $1.5 million damage in Hawaii, 2 deaths,
and 19 injuries.
Event Details (NCEI Global Historical Tsunami Database) |
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