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 3.34 0:54.7 6:22:13.7Pn
Agana, Guam 19.52 4:10.5 6:25:29.5P
Beijing, China 19.75 4:13.0 6:25:32.0P
Kathmandu, Nepal 46.38 8:03.8 6:29:22.8P
Anchorage, Alaska 53.17 8:54.9 6:30:13.9P
Honolulu, Hawaii 56.66 9:19.9 6:30:38.9P
Brisbane, Australia 60.99 9:49.7 6:31:08.7P
Moscow, Russia 69.8210:46.3 6:32:05.3P
Seattle, Washington 72.0610:59.7 6:32:18.7P
San Francisco, California 76.9511:27.8 6:32:46.8P
Bergen, Norway 80.1211:45.1 6:33:04.1P
Wellington, New Zealand 80.3411:46.3 6:33:05.3P
Los Angeles, California 81.8011:53.9 6:33:12.9P
Phoenix, Arizona 86.3512:16.8 6:33:35.8P
Golden, Colorado 86.7812:18.9 6:33:37.9P
Duluth, Minnesota 88.7112:28.0 6:33:47.0P
Albuquerque, New Mexico 88.8912:28.9 6:33:47.9P
London, England 89.1412:30.0 6:33:49.0P
Rome, Italy 91.2812:39.9 6:33:58.9P
Wichita, Kansas 92.6512:46.2 6:34:05.2P
St. Louis, Missouri 95.7613:00.4 6:34:19.4P
Ottawa, Canada 96.3913:03.2 6:34:22.2P
Bangor, Maine 99.1313:15.4 6:34:34.4Pdiff
Knoxville, Tennessee 100.4013:21.1 6:34:40.1Pdiff
Boston, Massachusetts 100.6713:22.3 6:34:41.3Pdiff
Brownsville, Texas 100.8613:23.1 6:34:42.1Pdiff
Nairobi, Kenya 101.0313:23.8 6:34:42.8Pdiff
New York, New York 101.1213:24.3 6:34:43.3Pdiff
Philadelphia, Pennsylvania 101.3713:25.3 6:34:44.3Pdiff
Washington, D.C. 101.5613:26.2 6:34:45.2Pdiff
Mexico City, Mexico 104.1413:37.7 6:34:56.7Pdiff
Miami, Florida 111.1314:08.7 6:35:27.7Pdiff
San Juan, Puerto Rico 123.9715:05.7 6:36:24.7Pdiff
Lima, Peru 141.2116:22.2 6:37:41.2Pdiff
Palmer Station, Antarctica 142.0716:26.0 6:37:45.0Pdiff

Travel Time Information and Calculator

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