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
Wellington, New Zealand 10.74 2:33.920:56:37.9Pn
Brisbane, Australia 25.50 5:28.420:59:32.4P
Honolulu, Hawaii 56.60 9:42.921:03:46.9P
Agana, Guam 57.68 9:50.621:03:54.6P
Palmer Station, Antarctica 68.9711:05.521:05:09.5P
Tokyo, Japan 78.2311:59.921:06:03.9P
Los Angeles, California 86.6412:43.721:06:47.7P
San Francisco, California 86.7912:44.521:06:48.5P
Phoenix, Arizona 90.1213:00.321:07:04.3P
Mexico City, Mexico 91.2013:05.321:07:09.3P
Lima, Peru 92.7513:12.421:07:16.4P
Beijing, China 93.9113:17.821:07:21.8P
Seattle, Washington 93.9813:18.121:07:22.1P
Albuquerque, New Mexico 94.6813:21.321:07:25.3P
Anchorage, Alaska 95.8513:26.621:07:30.6P
Brownsville, Texas 96.0213:27.421:07:31.4P
Golden, Colorado 98.3313:37.721:07:41.7P
Wichita, Kansas 102.4113:55.821:07:59.8Pdiff
St. Louis, Missouri 107.7214:19.421:08:23.4Pdiff
Kathmandu, Nepal 109.3714:26.721:08:30.7Pdiff
Miami, Florida 109.5014:27.321:08:31.3Pdiff
Duluth, Minnesota 110.0614:29.821:08:33.8Pdiff
Knoxville, Tennessee 110.1514:30.221:08:34.2Pdiff
Washington, D.C. 117.2515:01.721:09:05.7Pdiff
San Juan, Puerto Rico 117.8715:04.421:09:08.4Pdiff
Philadelphia, Pennsylvania 118.9715:09.321:09:13.3Pdiff
New York, New York 120.0615:14.121:09:18.1Pdiff
Ottawa, Canada 120.2615:15.021:09:19.0Pdiff
Boston, Massachusetts 122.6315:25.521:09:29.5Pdiff
Bangor, Maine 124.8615:35.521:09:39.5Pdiff
Nairobi, Kenya 133.1316:12.221:10:16.2Pdiff
Moscow, Russia 145.7119:38.221:13:42.2PKPbc
Bergen, Norway 151.7019:49.121:13:53.1PKPdf
London, England 160.6320:01.321:14:05.3PKPdf
Rome, Italy 167.1720:07.721:14:11.7PKPdf

Travel Time Information and Calculator

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