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 3.31 0:49.317:31:39.3Pn
San Juan, Puerto Rico 30.49 6:08.017:36:58.0P
Mexico City, Mexico 34.83 6:46.017:37:36.0P
Miami, Florida 34.97 6:47.117:37:37.1P
Brownsville, Texas 39.42 7:24.817:38:14.8P
Knoxville, Tennessee 45.47 8:13.917:39:03.9P
Washington, D.C. 48.07 8:34.317:39:24.3P
St. Louis, Missouri 48.94 8:41.017:39:31.0P
Philadelphia, Pennsylvania 49.22 8:43.117:39:33.1P
Wichita, Kansas 49.94 8:48.617:39:38.6P
New York, New York 50.07 8:49.617:39:39.6P
Albuquerque, New Mexico 51.36 8:59.317:39:49.3P
Boston, Massachusetts 51.99 9:03.917:39:53.9P
Phoenix, Arizona 52.94 9:11.017:40:01.0P
Golden, Colorado 54.59 9:23.017:40:13.0P
Ottawa, Canada 54.64 9:23.417:40:13.4P
Bangor, Maine 54.73 9:24.117:40:14.1P
Los Angeles, California 57.02 9:40.517:40:30.5P
Duluth, Minnesota 57.11 9:41.117:40:31.1P
Palmer Station, Antarctica 59.15 9:55.417:40:45.4P
San Francisco, California 62.0110:14.917:41:04.9P
Seattle, Washington 68.6210:57.717:41:47.7P
Honolulu, Hawaii 83.1112:20.317:43:10.3P
Anchorage, Alaska 89.1712:50.017:43:40.0P
London, England 90.4312:55.917:43:45.9P
Bergen, Norway 95.3113:18.417:44:08.4P
Wellington, New Zealand 95.7813:20.517:44:10.5P
Rome, Italy 97.3313:27.517:44:17.5P
Moscow, Russia 112.6314:35.417:45:25.4Pdiff
Nairobi, Kenya 115.2614:47.117:45:37.1Pdiff
Brisbane, Australia 117.7014:57.917:45:47.9Pdiff
Tokyo, Japan 136.1016:19.617:47:09.6Pdiff
Agana, Guam 136.9416:23.317:47:13.3Pdiff
Beijing, China 146.6319:34.817:50:24.8PKPdf
Kathmandu, Nepal 156.5719:50.217:50:40.2PKPdf

Travel Time Information and Calculator

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