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
Tokyo, Japan 12.66 2:57.820:35:41.8Pn
Beijing, China 15.68 3:38.520:36:22.5Pn
Agana, Guam 20.89 4:39.520:37:23.5P
Kathmandu, Nepal 37.87 7:13.820:39:57.8P
Brisbane, Australia 59.7510:01.720:42:45.7P
Anchorage, Alaska 62.3310:19.320:43:03.3P
Honolulu, Hawaii 66.7010:47.820:43:31.8P
Moscow, Russia 67.9310:55.620:43:39.6P
Bergen, Norway 80.7412:10.220:44:54.2P
Wellington, New Zealand 80.9812:11.520:44:55.5P
Seattle, Washington 81.8712:16.220:45:00.2P
San Francisco, California 87.2312:43.220:45:27.2P
Rome, Italy 88.9112:51.220:45:35.2P
London, England 89.1112:52.120:45:36.1P
Nairobi, Kenya 91.8313:04.820:45:48.8P
Los Angeles, California 92.1213:06.120:45:50.1P
Golden, Colorado 96.5413:26.320:46:10.3P
Phoenix, Arizona 96.5813:26.420:46:10.4P
Duluth, Minnesota 97.4613:30.420:46:14.4P
Albuquerque, New Mexico 98.9113:36.920:46:20.9Pdiff
Wichita, Kansas 102.1913:51.420:46:35.4Pdiff
Ottawa, Canada 104.1113:59.920:46:43.9Pdiff
St. Louis, Missouri 104.8814:03.420:46:47.4Pdiff
Bangor, Maine 106.2814:09.520:46:53.5Pdiff
Boston, Massachusetts 108.1514:17.920:47:01.9Pdiff
New York, New York 108.9514:21.420:47:05.4Pdiff
Philadelphia, Pennsylvania 109.3314:23.120:47:07.1Pdiff
Knoxville, Tennessee 109.3614:23.220:47:07.2Pdiff
Washington, D.C. 109.7414:24.920:47:08.9Pdiff
Brownsville, Texas 110.9514:30.320:47:14.3Pdiff
Mexico City, Mexico 114.4914:46.020:47:30.0Pdiff
Miami, Florida 120.2915:11.720:47:55.7Pdiff
San Juan, Puerto Rico 132.1016:04.220:48:48.2Pdiff
Palmer Station, Antarctica 139.1516:35.520:49:19.5Pdiff
Lima, Peru 151.7319:45.620:52:29.6PKPdf

Travel Time Information and Calculator

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