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 19.16 4:23.523:43:23.5P
Wellington, New Zealand 30.68 6:14.723:45:14.6P
Agana, Guam 31.99 6:26.223:45:26.2P
Honolulu, Hawaii 49.28 8:48.723:47:48.7P
Tokyo, Japan 52.78 9:15.123:48:15.1P
Beijing, China 68.2211:00.723:50:00.7P
Anchorage, Alaska 81.0212:15.023:51:15.0P
San Francisco, California 83.9212:30.123:51:30.1P
Los Angeles, California 85.9612:40.323:51:40.3P
Kathmandu, Nepal 86.2812:41.923:51:41.9P
Seattle, Washington 87.4412:47.623:51:47.6P
Phoenix, Arizona 90.7613:03.123:52:03.1P
Palmer Station, Antarctica 93.3213:14.923:52:14.9P
Albuquerque, New Mexico 95.5113:24.923:52:24.9P
Golden, Colorado 97.4213:33.523:52:33.5P
Mexico City, Mexico 99.4513:42.623:52:42.6Pdiff
Brownsville, Texas 101.9113:53.523:52:53.5Pdiff
Wichita, Kansas 103.2913:59.623:52:59.6Pdiff
Duluth, Minnesota 107.4014:17.923:53:17.9Pdiff
St. Louis, Missouri 108.9014:24.523:53:24.5Pdiff
Knoxville, Tennessee 113.0014:42.723:53:42.7Pdiff
Lima, Peru 114.1914:48.023:53:48.0Pdiff
Miami, Florida 117.4615:02.523:54:02.5Pdiff
Ottawa, Canada 118.9115:08.923:54:08.9Pdiff
Washington, D.C. 119.1815:10.123:54:10.1Pdiff
Moscow, Russia 120.0715:14.123:54:14.1Pdiff
Philadelphia, Pennsylvania 120.4315:15.723:54:15.7Pdiff
New York, New York 121.1515:18.923:54:18.9Pdiff
Boston, Massachusetts 122.9115:26.723:54:26.7Pdiff
Bangor, Maine 123.8115:30.723:54:30.7Pdiff
Nairobi, Kenya 126.7015:43.523:54:43.5Pdiff
Bergen, Norway 129.1515:54.423:54:54.4Pdiff
San Juan, Puerto Rico 130.5216:00.523:55:00.5Pdiff
London, England 138.5316:36.123:55:36.1Pdiff
Rome, Italy 141.4616:49.123:55:49.1Pdiff

Travel Time Information and Calculator

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