Historic Earthquakes

Magnitude 7.3 SANTA CRUZ ISLANDS
1999 February 06 21:47:59 UTC

Theoretical P-wave Travel Times

This map shows the predicted (theoretical) travel times, in minutes, of the compressional (P) wave from the earthquake location to points around the globe. The travel times are computed using the spherically-symmetric IASP91 reference earth velocity model. The heavy black lines shown are the approximate distances to the P-wave shadow zone (103 to 140 degrees).

Theoretical P-Wave Travel Times
City Distance
(degrees)
Travel Time
(min:secs)
Arrival Time
UTC
Phase
Brisbane, Australia 19.40 4:18.8 21:52:17.8 P
Wellington, New Zealand 29.19 5:52.9 21:53:51.9 P
Agana, Guam 34.01 6:35.0 21:54:34.0 P
Honolulu, Hawaii 48.64 8:34.6 21:56:33.6 P
Tokyo, Japan 54.57 9:18.8 21:57:17.8 P
Beijing, China 70.22 11:03.3 21:59:02.2 P
Anchorage, Alaska 81.40 12:06.9 22:00:05.9 P
San Francisco, California 83.21 12:16.3 22:00:15.3 P
Los Angeles, California 85.09 12:25.8 22:00:24.8 P
Seattle, Washington 87.08 12:35.6 22:00:34.6 P
Kathmandu, Nepal 88.42 12:42.0 22:00:41.0 P
Palmer Station, Antarctica 91.75 12:57.5 22:00:56.5 P
Albuquerque, New Mexico 94.59 13:10.5 22:01:09.5 P
Golden, Colorado 96.66 13:19.8 22:01:18.8 P
Mexico City, Mexico 98.02 13:25.9 22:01:24.9 P
Brownsville, Texas 100.66 13:37.6 22:01:36.6 Pdiff
Wichita, Kansas 102.43 13:45.5 22:01:44.5 Pdiff
Duluth, Minnesota 106.86 14:05.2 22:02:04.2 Pdiff
St. Louis, Missouri 108.06 14:10.5 22:02:09.5 Pdiff
Knoxville, Tennessee 112.06 14:28.2 22:02:27.2 Pdiff
Lima, Peru 112.09 14:28.4 22:02:27.4 Pdiff
Miami, Florida 116.16 14:46.5 22:02:45.5 Pdiff
Ottawa, Canada 118.36 14:56.2 22:02:55.2 Pdiff
Washington, D.C. 118.36 14:56.2 22:02:55.2 Pdiff
Philadelphia, Pennsylvania 119.67 15:02.0 22:03:01.0 Pdiff
New York, New York 120.43 15:05.4 22:03:04.4 Pdiff
Moscow, Russia 121.95 15:12.2 22:03:11.2 Pdiff
Boston, Massachusetts 122.27 15:13.6 22:03:12.6 Pdiff
Bangor, Maine 123.29 15:18.1 22:03:17.1 Pdiff
Nairobi, Kenya 128.31 15:40.4 22:03:39.4 Pdiff
San Juan, Puerto Rico 128.97 15:43.3 22:03:42.3 Pdiff
Bergen, Norway 130.61 15:50.6 22:03:49.6 Pdiff
London, England 140.01 16:32.3 22:04:31.3 Pdiff
Rome, Italy 143.38 16:47.3 22:04:46.3 Pdiff