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
Wellington, New Zealand 15.07 3:30.3 4:29:05.3Pn
Brisbane, Australia 27.82 5:46.0 4:31:21.0P
Honolulu, Hawaii 52.33 9:08.2 4:34:43.2P
Agana, Guam 56.73 9:40.1 4:35:15.1P
Palmer Station, Antarctica 71.5811:17.7 4:36:52.7P
Tokyo, Japan 76.4811:46.3 4:37:21.3P
Los Angeles, California 82.4412:18.7 4:37:53.7P
San Francisco, California 82.5112:19.1 4:37:54.1P
Phoenix, Arizona 86.0012:36.8 4:38:11.8P
Mexico City, Mexico 87.7012:45.0 4:38:20.0P
Seattle, Washington 89.6612:54.3 4:38:29.3P
Albuquerque, New Mexico 90.6012:58.6 4:38:33.6P
Lima, Peru 91.5713:03.1 4:38:38.1P
Anchorage, Alaska 91.7413:03.9 4:38:38.9P
Brownsville, Texas 92.3313:06.6 4:38:41.6P
Beijing, China 92.8813:09.2 4:38:44.2P
Golden, Colorado 94.1713:15.1 4:38:50.1P
Wichita, Kansas 98.3713:34.0 4:39:09.0Pdiff
St. Louis, Missouri 103.7413:57.8 4:39:32.8Pdiff
Duluth, Minnesota 105.8714:07.3 4:39:42.3Pdiff
Miami, Florida 106.1414:08.5 4:39:43.5Pdiff
Knoxville, Tennessee 106.3114:09.3 4:39:44.3Pdiff
Kathmandu, Nepal 110.1314:26.2 4:40:01.2Pdiff
Washington, D.C. 113.4014:40.7 4:40:15.7Pdiff
Philadelphia, Pennsylvania 115.1014:48.3 4:40:23.3Pdiff
San Juan, Puerto Rico 115.2214:48.8 4:40:23.8Pdiff
New York, New York 116.1714:53.0 4:40:28.0Pdiff
Ottawa, Canada 116.2014:53.2 4:40:28.2Pdiff
Boston, Massachusetts 118.7015:04.3 4:40:39.3Pdiff
Bangor, Maine 120.8715:13.9 4:40:48.9Pdiff
Nairobi, Kenya 137.1816:26.3 4:42:01.3Pdiff
Moscow, Russia 143.8716:56.0 4:42:31.0Pdiff
Bergen, Norway 148.0819:39.2 4:45:14.2PKPdf
London, England 156.7219:52.5 4:45:27.5PKPdf
Rome, Italy 165.1220:02.0 4:45:37.0PKPdf

Travel Time Information and Calculator

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