42 mHighest wave
Tsunami of 1 April 1946: off the United States
A tsunami started off the coast of the United States on 1 April 1946; cause: earthquake and landslide. The highest wave reached 42 m. It is recorded at 618 places in 14 countries. 168 people died.
1 April 194612:29 UTC
earthquake and landslideCause · M8.6
168Deaths
618Places the wave reached · definite
Where it started and where the wave arrived
< 0,5 m0,5–2 m2–5 m5–10 m≥ 10 m
Places the wave reached
| Town | Countries reached | Water height | From the source | Deaths |
|---|---|---|---|---|
| – | United States | 42.2 m | 161 km | |
| – | United States | 42 m | 161 km | |
| – | United States | 41.6 m | 150 km | |
| – | United States | 39.8 m | 161 km | |
| – | United States | 35.1 m | 167 km | 5 |
| – | United States | 34.8 m | 151 km | |
| – | United States | 27.2 m | 156 km | |
| Sanak · 7 km | United States | 24.6 m | 103 km | |
| – | United States | 23.5 m | 152 km | |
| – | French Polynesia | 20 m | 7,290 km | |
| – | French Polynesia | 18.9 m | 7,290 km | |
| – | United States | 18.2 m | 140 km | |
| Cape Sarichef · 13 km | United States | 17.6 m | 175 km | |
| – | United States | 17.1 m | 152 km | |
| Niuli‘i · 2 km | United States | 16.8 m | 3,743 km | |
| Pauloff Harbor · 10 km | United States | 16.6 m | 99 km | |
| Kalawao · 2 km | United States | 16.5 m | 3,622 km | |
| Kalawao · 2 km | United States | 16.4 m | 3,623 km | |
| – | United States | 16.4 m | 149 km | |
| Pauloff Harbor · 10 km | United States | 16.1 m | 98 km | |
| Pauloff Harbor · 9 km | United States | 15.3 m | 100 km | |
| – | United States | 14.9 m | 167 km | |
| – | French Polynesia | 14.6 m | 7,366 km | 2 |
| – | United States | 13.8 m | 163 km | |
| Hāʻena · 1 km | United States | 13.7 m | 3,482 km | 7 |
| Kīlauea · 3 km | United States | 13.7 m | 3,482 km | |
| Moloaa · 1 km | United States | 13.7 m | 3,486 km | |
| Mo‘omomi · 1 km | United States | 13.4 m | 3,617 km | |
| Kala‘e · 2 km | United States | 13.4 m | 3,620 km | |
| – | United States | 13.2 m | 154 km | |
| – | French Polynesia | 13 m | 7,295 km | |
| – | French Polynesia | 12.8 m | 7,230 km | |
| – | United States | 12.8 m | 153 km | |
| Kalawao · 1 km | United States | 12.5 m | 3,622 km | |
| Kalawao · 7 km | United States | 12.5 m | 3,624 km | |
| Hanamaulu · 2 km | United States | 12.2 m | 3,510 km | |
| Niuli‘i · 1 km | United States | 12.2 m | 3,742 km | |
| Waipio · 2 km | United States | 12.2 m | 3,755 km | |
| Nikolski · 1 km | United States | 12.2 m | 408 km | |
| – | United States | 12.1 m | 167 km | |
| Niuli‘i · 2 km | United States | 12 m | 3,744 km | |
| Waipio · 2 km | United States | 12 m | 3,755 km | |
| Wahīlauhue · 2 km | United States | 11.9 m | 3,619 km | |
| Pu‘uohoku Ranch · 2 km | United States | 11.9 m | 3,630 km | |
| Sanak · 9 km | United States | 11.8 m | 101 km | |
| Mānā · 7 km | United States | 11.6 m | 3,495 km | |
| Moloaa · 3 km | United States | 11.6 m | 3,484 km | |
| Welokā · 0 km | United States | 11.6 m | 3,779 km | |
| Kapalawai · 2 km | United States | 11.5 m | 3,514 km | |
| Kalama Valley · 3 km | United States | 11.3 m | 3,599 km | |
| Kalawao · 0 km | United States | 11.3 m | 3,622 km | |
| Hālawa · 7 km | United States | 11.3 m | 3,624 km | |
| Hakalau · 1 km | United States | 11.3 m | 3,786 km | |
| Honomu · 1 km | United States | 11.3 m | 3,789 km | |
| – | French Polynesia | 11.3 m | 7,233 km | |
| Kalama Valley · 3 km | United States | 11.1 m | 3,597 km | |
| Honomu · 1 km | United States | 11 m | 3,789 km | |
| Kepuhi · 2 km | United States | 11 m | 3,615 km | |
| Mo‘omomi · 1 km | United States | 11 m | 3,616 km | |
| Kukuihaele · 2 km | United States | 11 m | 3,755 km |
Towns the wave reached
Sanak24.6 m · 7 km
Cape Sarichef17.6 m · 13 km
Niuli‘i16.8 m · 2 km
Pauloff Harbor16.6 m · 10 km
Kalawao16.5 m · 2 km
Moloaa13.7 m · 1 km
Kīlauea13.7 m · 3 km
Hāʻena13.7 m · 1 km
Mo‘omomi13.4 m · 1 km
Kala‘e13.4 m · 2 km
Waipio12.2 m · 2 km
Hanamaulu12.2 m · 2 km
Nikolski12.2 m · 1 km
Wahīlauhue11.9 m · 2 km
Pu‘uohoku Ranch11.9 m · 2 km
Mānā11.6 m · 7 km
Welokā11.6 m · 0 km
Kapalawai11.5 m · 2 km
Kalama Valley11.3 m · 3 km
Honomu11.3 m · 1 km
Hālawa11.3 m · 7 km
Hakalau11.3 m · 1 km
Kepuhi11 m · 2 km
Kukuihaele11 m · 2 km
Mokulē‘ia Beach Colony10.9 m · 11 km
Papaikou10.7 m · 1 km
Kawainui10.4 m · 1 km
Halehomaha10.4 m · 1 km
Mākaha-Kaʻena10.4 m · 7 km
Kahakuloa10.1 m · 1 km