Table 3

Wave heights of some recent tsunamis recorded at selected West Coast tide gauges

(Modified from Spaeth and Berkman, 1967. Heights are maximum rise or fall in feet.) Ms signifies surface-wave magnitude; Mw signifies moment magnitude

taken from "Washington State Earthquake Hazards", by Linda Noson, Anth ony Qamar, and Gerald Thorsen

Tsunami-Generating Earthquakes

Selected tide stations
Eastern Aleutian
1946
Ms 7.4

Kamchatka
1952
Mw 9.0

Central Aleutians
1957
Mw 9.1

Southern Chile
1960
Mw 9.5

Southern Alaska
1964
Mw 9.2

Central Aleutians
1986
Ms 7.7

Tofino, B.C.
1.9
2.0

4.6
8.1

Neah Bay, WA
1.2
1.5
1.0
2.4
4.7
0.6
Crescent City, CA
5.9
6.8
4.3
10.9
13.0+
0.03
San Francisco, CA
1.7
3.5
1.7
2.9
7.4


+ = Tide gauge went off scale