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
Kathmandu, Nepal 24.82 5:18.818:39:02.8P
Beijing, China 40.29 7:33.518:41:17.5P
Agana, Guam 49.98 8:50.418:42:34.4P
Tokyo, Japan 51.65 9:03.118:42:47.1P
Nairobi, Kenya 58.28 9:51.018:43:35.0P
Brisbane, Australia 64.4010:32.418:44:16.4P
Moscow, Russia 68.3110:57.518:44:41.5P
Rome, Italy 81.3512:12.918:45:56.9P
Wellington, New Zealand 85.3712:33.518:46:17.5P
Bergen, Norway 85.9212:36.218:46:20.2P
London, England 89.6712:54.218:46:38.2P
Anchorage, Alaska 97.9213:31.918:47:15.9P
Honolulu, Hawaii 104.3714:00.518:47:44.5Pdiff
Palmer Station, Antarctica 115.2014:48.618:48:32.6Pdiff
Seattle, Washington 118.5715:03.518:48:47.5Pdiff
San Francisco, California 125.5315:34.518:49:18.5Pdiff
Duluth, Minnesota 128.6215:48.118:49:32.1Pdiff
Bangor, Maine 128.8015:49.018:49:33.0Pdiff
Ottawa, Canada 129.6315:52.618:49:36.6Pdiff
Los Angeles, California 130.5515:56.718:49:40.7Pdiff
Boston, Massachusetts 131.7016:01.818:49:45.8Pdiff
Golden, Colorado 132.2616:04.318:49:48.3Pdiff
New York, New York 133.8916:11.618:49:55.6Pdiff
Phoenix, Arizona 134.4716:14.118:49:58.1Pdiff
Philadelphia, Pennsylvania 134.8516:15.818:49:59.8Pdiff
Albuquerque, New Mexico 135.7516:19.818:50:03.8Pdiff
Washington, D.C. 136.2116:21.818:50:05.8Pdiff
Wichita, Kansas 136.4716:23.018:50:07.0Pdiff
St. Louis, Missouri 136.8116:24.518:50:08.5Pdiff
Knoxville, Tennessee 139.7916:37.718:50:21.7Pdiff
Brownsville, Texas 147.5119:38.118:53:22.1PKPdf
Miami, Florida 149.5619:41.618:53:25.6PKPdf
San Juan, Puerto Rico 150.4919:43.118:53:27.1PKPdf
Mexico City, Mexico 152.5319:46.318:53:30.3PKPdf
Lima, Peru 169.0020:04.918:53:48.9PKPdf

Travel Time Information and Calculator

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