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 13.71 3:14.410:29:58.4Pn
Beijing, China 15.44 3:37.810:30:21.8Pn
Tokyo, Japan 34.22 6:45.710:33:29.7P
Moscow, Russia 43.29 8:01.710:34:45.7P
Agana, Guam 48.62 8:43.710:35:27.7P
Bergen, Norway 59.2010:01.110:36:45.1P
Rome, Italy 62.7110:25.110:37:09.1P
London, England 65.8710:45.810:37:29.8P
Nairobi, Kenya 67.4510:55.910:37:39.9P
Anchorage, Alaska 67.9010:58.710:37:42.7P
Brisbane, Australia 83.1712:26.310:39:10.3P
Seattle, Washington 88.3212:51.810:39:35.8P
Honolulu, Hawaii 88.6712:53.510:39:37.5P
Duluth, Minnesota 95.9513:27.010:40:11.0P
San Francisco, California 96.9213:31.410:40:15.4P
Bangor, Maine 97.2913:33.010:40:17.0P
Ottawa, Canada 97.4213:33.610:40:17.6P
Boston, Massachusetts 100.0213:45.210:40:29.2Pdiff
Golden, Colorado 100.6813:48.110:40:32.1Pdiff
Los Angeles, California 101.8213:53.210:40:37.2Pdiff
New York, New York 101.9413:53.710:40:37.7Pdiff
Philadelphia, Pennsylvania 102.8013:57.510:40:41.5Pdiff
Washington, D.C. 104.0014:02.810:40:46.8Pdiff
St. Louis, Missouri 104.1314:03.410:40:47.4Pdiff
Wichita, Kansas 104.1614:03.610:40:47.6Pdiff
Phoenix, Arizona 104.6014:05.510:40:49.5Pdiff
Albuquerque, New Mexico 104.7314:06.110:40:50.1Pdiff
Wellington, New Zealand 105.6314:10.110:40:54.1Pdiff
Knoxville, Tennessee 107.1114:16.710:41:00.7Pdiff
Brownsville, Texas 115.7014:54.810:41:38.8Pdiff
Miami, Florida 117.2315:01.610:41:45.6Pdiff
Mexico City, Mexico 121.5915:20.910:42:04.9Pdiff
San Juan, Puerto Rico 122.3015:24.110:42:08.1Pdiff
Palmer Station, Antarctica 147.6519:42.510:46:26.5PKPdf
Lima, Peru 154.3519:53.110:46:37.1PKPdf

Travel Time Information and Calculator

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