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
Anchorage, Alaska 18.25 3:56.815:41:55.8P
Tokyo, Japan 33.23 6:15.915:44:14.9P
Honolulu, Hawaii 35.33 6:33.915:44:32.9P
Seattle, Washington 36.12 6:40.615:44:39.6P
San Francisco, California 41.76 7:27.215:45:26.2P
Beijing, China 44.66 7:50.315:45:49.3P
Los Angeles, California 46.76 8:06.715:46:05.7P
Agana, Guam 48.25 8:18.215:46:17.2P
Golden, Colorado 50.84 8:37.815:46:36.8P
Phoenix, Arizona 50.93 8:38.415:46:37.4P
Albuquerque, New Mexico 53.10 8:54.415:46:53.4P
Duluth, Minnesota 53.56 8:57.715:46:56.7P
Wichita, Kansas 56.73 9:20.415:47:19.4P
St. Louis, Missouri 60.10 9:43.615:47:42.6P
Ottawa, Canada 62.6810:00.915:47:59.9P
Knoxville, Tennessee 64.8610:15.115:48:14.1P
Brownsville, Texas 65.1410:17.015:48:16.0P
Bangor, Maine 66.3310:24.615:48:23.6P
Washington, D.C. 66.9410:28.415:48:27.4P
New York, New York 67.0510:29.115:48:28.1P
Philadelphia, Pennsylvania 67.0710:29.215:48:28.2P
Boston, Massachusetts 67.2010:30.015:48:29.0P
Bergen, Norway 67.4210:31.415:48:30.4P
Moscow, Russia 67.8410:34.115:48:33.1P
Mexico City, Mexico 69.0010:41.215:48:40.2P
Kathmandu, Nepal 71.5310:56.615:48:55.6P
Miami, Florida 75.3611:18.915:49:17.9P
London, England 76.3911:24.715:49:23.7P
Brisbane, Australia 83.1912:01.115:50:00.1P
Rome, Italy 85.4412:12.415:50:11.4P
San Juan, Puerto Rico 88.9112:28.915:50:27.9P
Wellington, New Zealand 93.5212:50.215:50:49.2P
Lima, Peru 107.0813:50.715:51:49.7Pdiff
Nairobi, Kenya 120.6714:51.015:52:50.0Pdiff
Palmer Station, Antarctica 146.2719:13.115:57:12.1PKPdf

Travel Time Information and Calculator

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