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
Brisbane, Australia 23.63 5:10.611:35:26.6P
Agana, Guam 32.09 6:26.311:36:42.3P
Wellington, New Zealand 32.97 6:34.011:36:50.0P
Honolulu, Hawaii 44.69 8:12.111:38:28.1P
Tokyo, Japan 51.66 9:06.011:39:22.0P
Beijing, China 68.0410:58.811:41:14.8P
Anchorage, Alaska 76.9811:52.111:42:08.1P
San Francisco, California 79.3212:05.011:42:21.0P
Los Angeles, California 81.3912:16.211:42:32.2P
Seattle, Washington 82.9012:24.111:42:40.1P
Phoenix, Arizona 86.2112:40.811:42:56.8P
Kathmandu, Nepal 87.8112:48.511:43:04.5P
Albuquerque, New Mexico 90.9513:03.211:43:19.2P
Golden, Colorado 92.8313:11.911:43:27.9P
Palmer Station, Antarctica 95.2313:22.911:43:38.9P
Mexico City, Mexico 95.2413:22.911:43:38.9P
Brownsville, Texas 97.5213:33.211:43:49.2P
Wichita, Kansas 98.7213:38.511:43:54.5Pdiff
Duluth, Minnesota 102.8213:56.711:44:12.7Pdiff
St. Louis, Missouri 104.3214:03.411:44:19.4Pdiff
Knoxville, Tennessee 108.4514:21.711:44:37.7Pdiff
Lima, Peru 111.8714:36.911:44:52.9Pdiff
Miami, Florida 113.1014:42.411:44:58.4Pdiff
Ottawa, Canada 114.3314:47.811:45:03.8Pdiff
Washington, D.C. 114.5914:49.011:45:05.0Pdiff
Philadelphia, Pennsylvania 115.8414:54.511:45:10.5Pdiff
New York, New York 116.5614:57.711:45:13.7Pdiff
Boston, Massachusetts 118.3215:05.511:45:21.5Pdiff
Moscow, Russia 119.1715:09.311:45:25.3Pdiff
Bangor, Maine 119.2315:09.611:45:25.6Pdiff
San Juan, Puerto Rico 126.4015:41.411:45:57.4Pdiff
Bergen, Norway 126.8515:43.411:45:59.4Pdiff
Nairobi, Kenya 130.6016:00.111:46:16.1Pdiff
London, England 136.2716:25.211:46:41.2Pdiff
Rome, Italy 140.6316:44.611:47:00.6Pdiff

Travel Time Information and Calculator

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