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
Rome, Italy 19.95 4:31.617:00:53.6P
London, England 28.92 5:58.717:02:20.7P
Bergen, Norway 37.52 7:13.417:03:35.4P
Nairobi, Kenya 39.01 7:26.017:03:48.0P
Moscow, Russia 40.69 7:39.917:04:01.9P
Bangor, Maine 63.1310:27.317:06:49.3P
Boston, Massachusetts 65.1210:40.417:07:02.4P
San Juan, Puerto Rico 66.3410:48.217:07:10.2P
New York, New York 67.5710:56.117:07:18.1P
Ottawa, Canada 67.9110:58.217:07:20.2P
Philadelphia, Pennsylvania 68.5911:02.517:07:24.5P
Washington, D.C. 70.2411:12.717:07:34.7P
Kathmandu, Nepal 71.3911:19.717:07:41.7P
Miami, Florida 76.5111:49.717:08:11.7P
Knoxville, Tennessee 77.2811:54.017:08:16.0P
Duluth, Minnesota 78.5612:01.117:08:23.1P
St. Louis, Missouri 80.1512:09.817:08:31.8P
Wichita, Kansas 85.6312:38.217:09:00.2P
Lima, Peru 87.6612:48.117:09:10.1P
Golden, Colorado 90.1512:59.817:09:21.8P
Beijing, China 90.5813:01.817:09:23.8P
Brownsville, Texas 90.8913:03.217:09:25.2P
Albuquerque, New Mexico 93.5013:15.317:09:37.3P
Anchorage, Alaska 93.8813:17.017:09:39.0P
Mexico City, Mexico 95.1113:22.617:09:44.6P
Seattle, Washington 95.4113:24.017:09:46.0P
Phoenix, Arizona 98.1813:36.417:09:58.4P
Los Angeles, California 101.9813:53.317:10:15.3Pdiff
San Francisco, California 102.2013:54.317:10:16.3Pdiff
Palmer Station, Antarctica 103.4413:59.817:10:21.8Pdiff
Tokyo, Japan 107.6314:18.417:10:40.4Pdiff
Agana, Guam 126.4015:41.717:12:03.7Pdiff
Honolulu, Hawaii 133.1216:11.517:12:33.5Pdiff
Brisbane, Australia 150.5119:46.617:16:08.6PKPdf
Wellington, New Zealand 159.6119:59.517:16:21.5PKPdf

Travel Time Information and Calculator

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