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
Brisbane, Australia 17.65 3:57.711:05:20.7P
Wellington, New Zealand 19.17 4:14.211:05:37.2P
Agana, Guam 44.18 7:56.911:09:19.9P
Honolulu, Hawaii 52.58 9:01.311:10:24.3P
Tokyo, Japan 65.0110:27.411:11:50.4P
Beijing, China 80.4111:58.511:13:21.5P
Palmer Station, Antarctica 81.4212:03.911:13:26.9P
San Francisco, California 86.0412:27.311:13:50.3P
Los Angeles, California 87.0612:32.311:13:55.3P
Anchorage, Alaska 88.7712:40.411:14:03.4P
Phoenix, Arizona 91.3512:52.411:14:15.4P
Seattle, Washington 91.4212:52.711:14:15.7P
Albuquerque, New Mexico 96.1213:14.211:14:37.2P
Mexico City, Mexico 96.4813:15.811:14:38.8P
Kathmandu, Nepal 96.9313:17.811:14:40.8P
Golden, Colorado 98.9313:26.711:14:49.7Pdiff
Brownsville, Texas 100.1813:32.311:14:55.3Pdiff
Wichita, Kansas 104.0813:49.611:15:12.6Pdiff
Lima, Peru 104.5813:51.811:15:14.8Pdiff
St. Louis, Missouri 109.7014:14.511:15:37.5Pdiff
Duluth, Minnesota 110.0314:16.011:15:39.0Pdiff
Knoxville, Tennessee 113.0914:29.611:15:52.6Pdiff
Miami, Florida 115.0914:38.411:16:01.4Pdiff
Washington, D.C. 119.9214:59.911:16:22.9Pdiff
Ottawa, Canada 121.2615:05.811:16:28.8Pdiff
Philadelphia, Pennsylvania 121.4515:06.711:16:29.7Pdiff
New York, New York 122.3815:10.811:16:33.8Pdiff
Boston, Massachusetts 124.6115:20.711:16:43.7Pdiff
San Juan, Puerto Rico 126.0215:27.011:16:50.0Pdiff
Bangor, Maine 126.2015:27.711:16:50.7Pdiff
Nairobi, Kenya 130.0715:45.011:17:08.0Pdiff
Moscow, Russia 132.3515:55.111:17:18.1Pdiff
Bergen, Norway 140.6916:32.111:17:55.1Pdiff
London, England 150.1119:32.311:20:55.3PKPdf
Rome, Italy 153.7219:37.911:21:00.9PKPdf

Travel Time Information and Calculator

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