Theoretical P-Wave Travel Times


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
Travel Time
Arrival Time
Lima, Peru 20.57 4:31.110:36:53.1P
Palmer Station, Antarctica 36.66 6:57.410:39:19.4P
San Juan, Puerto Rico 49.50 8:40.710:41:02.7P
Miami, Florida 57.75 9:41.010:42:03.0P
Mexico City, Mexico 58.26 9:44.610:42:06.6P
Brownsville, Texas 63.1510:17.810:42:39.8P
Knoxville, Tennessee 68.6110:52.910:43:14.9P
Washington, D.C. 70.2111:02.710:43:24.7P
Philadelphia, Pennsylvania 71.0911:08.110:43:30.1P
New York, New York 71.7611:12.110:43:34.1P
St. Louis, Missouri 72.4011:15.910:43:37.9P
Boston, Massachusetts 73.2411:20.910:43:42.9P
Wichita, Kansas 73.6911:23.510:43:45.5P
Albuquerque, New Mexico 75.0211:31.210:43:53.2P
Bangor, Maine 75.6811:35.010:43:57.0P
Phoenix, Arizona 76.2811:38.410:44:00.4P
Ottawa, Canada 76.5611:40.010:44:02.0P
Golden, Colorado 78.3511:50.010:44:12.0P
Los Angeles, California 80.0111:59.010:44:21.0P
Duluth, Minnesota 80.4812:01.510:44:23.5P
San Francisco, California 85.0312:25.110:44:47.1P
Wellington, New Zealand 87.0912:35.210:44:57.2P
Seattle, Washington 92.2312:59.210:45:21.2P
Honolulu, Hawaii 100.0713:34.510:45:56.5Pdiff
London, England 101.9313:42.810:46:04.8Pdiff
Nairobi, Kenya 102.5613:45.610:46:07.6Pdiff
Rome, Italy 104.1913:52.810:46:14.8Pdiff
Bergen, Norway 109.3114:15.610:46:37.6Pdiff
Brisbane, Australia 109.3514:15.710:46:37.7Pdiff
Anchorage, Alaska 112.8614:31.310:46:53.3Pdiff
Moscow, Russia 124.2115:21.710:47:43.7Pdiff
Agana, Guam 144.5816:52.110:49:14.1Pdiff
Tokyo, Japan 155.9219:44.010:52:06.0PKPdf
Kathmandu, Nepal 157.1019:45.610:52:07.6PKPdf
Beijing, China 170.4119:58.510:52:20.5PKPdf

Travel Time Information and Calculator

Preliminary Earthquake Report
U.S. Geological Survey, National Earthquake Information Center
World Data Center for Seismology, Denver