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 7.59 1:47.814:19:21.8Pn
Beijing, China 20.18 4:26.314:22:00.3P
Agana, Guam 29.27 5:52.314:23:26.3P
Anchorage, Alaska 42.99 7:48.814:25:22.8P
Kathmandu, Nepal 48.62 8:33.114:26:07.1P
Honolulu, Hawaii 53.33 9:08.414:26:42.4P
Seattle, Washington 62.6010:13.214:27:47.2P
Moscow, Russia 63.3810:18.414:27:52.4P
San Francisco, California 68.4610:50.914:28:24.9P
Brisbane, Australia 70.5511:03.814:28:37.8P
Bergen, Norway 71.5211:09.714:28:43.7P
Los Angeles, California 73.4311:21.014:28:55.0P
Golden, Colorado 77.2211:42.714:29:16.7P
Phoenix, Arizona 77.6611:45.214:29:19.2P
Duluth, Minnesota 78.2911:48.614:29:22.6P
Albuquerque, New Mexico 79.7411:56.614:29:30.6P
London, England 80.8012:02.214:29:36.2P
Wichita, Kansas 82.8312:12.814:29:46.8P
Rome, Italy 84.6812:22.314:29:56.3P
St. Louis, Missouri 85.5812:26.714:30:00.7P
Ottawa, Canada 85.6112:26.914:30:00.9P
Bangor, Maine 88.2612:39.714:30:13.7P
Wellington, New Zealand 88.4512:40.614:30:14.6P
Boston, Massachusetts 89.8512:47.114:30:21.1P
Knoxville, Tennessee 90.1212:48.414:30:22.4P
New York, New York 90.3712:49.514:30:23.5P
Philadelphia, Pennsylvania 90.6512:50.814:30:24.8P
Washington, D.C. 90.9112:52.014:30:26.1P
Brownsville, Texas 91.8112:56.214:30:30.2P
Mexico City, Mexico 95.7313:14.114:30:48.1P
Miami, Florida 100.9913:37.614:31:11.6Pdiff
Nairobi, Kenya 102.7613:45.414:31:19.4Pdiff
San Juan, Puerto Rico 113.3514:32.414:32:06.4Pdiff
Lima, Peru 133.7416:02.914:33:36.9Pdiff
Palmer Station, Antarctica 151.0819:35.714:37:09.7PKPdf

Travel Time Information and Calculator

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