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
Nairobi, Kenya 51.34 9:03.622:52:46.6P
Palmer Station, Antarctica 61.4010:15.422:53:58.4P
Lima, Peru 61.8910:18.722:54:01.7P
Rome, Italy 61.9210:18.922:54:01.9P
San Juan, Puerto Rico 62.1510:20.422:54:03.4P
London, England 67.7710:57.122:54:40.1P
Miami, Florida 77.0311:52.422:55:35.4P
Bergen, Norway 77.1711:53.222:55:36.2P
Boston, Massachusetts 78.4212:00.122:55:43.1P
Bangor, Maine 78.4412:00.222:55:43.2P
New York, New York 79.4112:05.522:55:48.5P
Philadelphia, Pennsylvania 79.7812:07.522:55:50.5P
Washington, D.C. 80.5212:11.522:55:54.5P
Ottawa, Canada 82.8912:24.022:56:07.0P
Moscow, Russia 82.9212:24.222:56:07.2P
Knoxville, Tennessee 85.0612:35.122:56:18.1P
St. Louis, Missouri 89.8312:58.022:56:41.0P
Mexico City, Mexico 91.3813:05.222:56:48.2P
Brownsville, Texas 91.7013:06.722:56:49.7P
Duluth, Minnesota 93.8413:16.622:56:59.6P
Wichita, Kansas 94.8613:21.222:57:04.2P
Golden, Colorado 101.3013:50.022:57:33.0Pdiff
Albuquerque, New Mexico 101.5413:51.122:57:34.1Pdiff
Kathmandu, Nepal 104.4914:04.222:57:47.2Pdiff
Phoenix, Arizona 105.7114:09.522:57:52.5Pdiff
Los Angeles, California 110.8814:32.522:58:15.5Pdiff
Seattle, Washington 114.2114:47.322:58:30.3Pdiff
San Francisco, California 114.4714:48.422:58:31.4Pdiff
Wellington, New Zealand 122.9315:26.022:59:09.0Pdiff
Anchorage, Alaska 124.9715:35.122:59:18.1Pdiff
Beijing, China 130.0615:57.722:59:40.7Pdiff
Brisbane, Australia 135.1216:20.123:00:03.1Pdiff
Honolulu, Hawaii 146.0119:38.223:03:21.2PKPbc
Tokyo, Japan 148.6519:43.223:03:26.2PKPdf
Agana, Guam 158.5619:57.923:03:40.9PKPdf

Travel Time Information and Calculator

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