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
Lima, Peru 36.69 7:06.219:39:47.2P
Palmer Station, Antarctica 41.73 7:48.219:40:29.2P
Mexico City, Mexico 54.64 9:28.019:42:09.0P
Wellington, New Zealand 58.65 9:56.619:42:37.6P
Brownsville, Texas 61.2610:14.519:42:55.5P
Miami, Florida 66.0610:46.219:43:27.2P
San Juan, Puerto Rico 66.7610:50.719:43:31.7P
Phoenix, Arizona 67.8710:57.819:43:38.8P
Los Angeles, California 68.9611:04.619:43:45.6P
Albuquerque, New Mexico 69.4811:07.819:43:48.8P
Honolulu, Hawaii 72.5211:26.319:44:07.3P
Wichita, Kansas 72.9311:28.719:44:09.7P
San Francisco, California 73.2011:30.319:44:11.3P
Knoxville, Tennessee 73.7311:33.419:44:14.4P
Golden, Colorado 74.1811:36.119:44:17.1P
St. Louis, Missouri 75.0511:41.119:44:22.1P
Washington, D.C. 78.9912:03.319:44:44.3P
Philadelphia, Pennsylvania 80.5912:12.019:44:53.0P
Brisbane, Australia 80.9012:13.619:44:54.6P
New York, New York 81.6812:17.719:44:58.7P
Duluth, Minnesota 82.5012:22.019:45:03.0P
Seattle, Washington 83.0112:24.719:45:05.7P
Boston, Massachusetts 84.1712:30.619:45:11.6P
Ottawa, Canada 85.2612:36.119:45:17.1P
Bangor, Maine 87.1512:45.419:45:26.4P
Anchorage, Alaska 101.2413:49.819:46:30.8Pdiff
Agana, Guam 110.8414:32.419:47:13.4Pdiff
Tokyo, Japan 124.9315:34.919:48:15.9Pdiff
London, England 127.4915:46.319:48:27.3Pdiff
Bergen, Norway 131.3416:03.419:48:44.4Pdiff
Nairobi, Kenya 131.9516:06.119:48:47.1Pdiff
Rome, Italy 134.2916:16.519:48:57.5Pdiff
Beijing, China 143.8216:58.819:49:39.8Pdiff
Moscow, Russia 148.9619:43.819:52:24.8PKPdf
Kathmandu, Nepal 165.9220:05.819:52:46.8PKPdf

Travel Time Information and Calculator

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