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 15.54 3:33.919:35:37.9Pn
Moscow, Russia 29.38 5:54.519:37:58.5P
Beijing, China 36.55 6:56.819:39:00.8P
Rome, Italy 44.27 8:00.419:40:04.4P
Bergen, Norway 47.00 8:22.019:40:26.0P
Nairobi, Kenya 48.28 8:31.819:40:35.8P
London, England 50.91 8:51.819:40:55.8P
Tokyo, Japan 55.42 9:24.919:41:28.9P
Agana, Guam 70.0311:02.119:43:06.1P
Anchorage, Alaska 77.7511:47.219:43:51.2P
Bangor, Maine 91.2012:54.919:44:58.9P
Ottawa, Canada 93.1113:03.819:45:07.8P
Boston, Massachusetts 94.1813:08.619:45:12.6P
Seattle, Washington 95.7613:15.819:45:19.8P
Duluth, Minnesota 95.9613:16.719:45:20.7P
New York, New York 96.6713:19.919:45:23.9P
Philadelphia, Pennsylvania 97.7613:24.819:45:28.8P
Washington, D.C. 99.3713:31.919:45:35.9Pdiff
Brisbane, Australia 100.5513:37.219:45:41.2Pdiff
St. Louis, Missouri 103.3713:49.719:45:53.7Pdiff
Golden, Colorado 104.3913:54.219:45:58.2Pdiff
Knoxville, Tennessee 104.6513:55.419:45:59.4Pdiff
Wichita, Kansas 105.5613:59.419:46:03.4Pdiff
San Francisco, California 105.6213:59.719:46:03.7Pdiff
Honolulu, Hawaii 107.2214:06.819:46:10.8Pdiff
Albuquerque, New Mexico 109.1114:15.219:46:19.2Pdiff
Los Angeles, California 109.8014:18.219:46:22.2Pdiff
Phoenix, Arizona 110.7914:22.619:46:26.6Pdiff
San Juan, Puerto Rico 111.6114:26.319:46:30.3Pdiff
Miami, Florida 112.2914:29.319:46:33.3Pdiff
Brownsville, Texas 117.1914:51.119:46:55.1Pdiff
Wellington, New Zealand 122.8515:16.219:47:20.2Pdiff
Mexico City, Mexico 123.8215:20.519:47:24.5Pdiff
Palmer Station, Antarctica 139.1416:28.519:48:32.5Pdiff
Lima, Peru 141.8116:40.319:48:44.3Pdiff

Travel Time Information and Calculator

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