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 16.69 3:53.920:46:24.9Pn
Wellington, New Zealand 18.31 4:14.020:46:45.0Pn
Agana, Guam 44.52 8:11.620:50:42.6P
Honolulu, Hawaii 53.75 9:22.320:51:53.3P
Tokyo, Japan 65.5510:43.720:53:14.7P
Palmer Station, Antarctica 80.7212:13.420:54:44.4P
Beijing, China 80.7312:13.420:54:44.4P
San Francisco, California 87.1912:46.420:55:17.4P
Los Angeles, California 88.1912:51.220:55:22.2P
Anchorage, Alaska 89.8912:59.120:55:30.1P
Phoenix, Arizona 92.4613:11.020:55:42.0P
Seattle, Washington 92.6013:11.720:55:42.7P
Kathmandu, Nepal 96.7713:30.720:56:01.7P
Albuquerque, New Mexico 97.2313:32.720:56:03.7P
Mexico City, Mexico 97.4213:33.620:56:04.6P
Golden, Colorado 100.0613:45.320:56:16.3Pdiff
Brownsville, Texas 101.1813:50.320:56:21.3Pdiff
Lima, Peru 104.8814:06.720:56:37.7Pdiff
Wichita, Kansas 105.1914:08.120:56:39.1Pdiff
St. Louis, Missouri 110.8014:33.020:57:04.0Pdiff
Duluth, Minnesota 111.1814:34.720:57:05.7Pdiff
Knoxville, Tennessee 114.1614:47.920:57:18.9Pdiff
Miami, Florida 116.0414:56.220:57:27.2Pdiff
Washington, D.C. 121.0115:18.320:57:49.3Pdiff
Ottawa, Canada 122.4015:24.520:57:55.5Pdiff
Philadelphia, Pennsylvania 122.5515:25.220:57:56.2Pdiff
New York, New York 123.4815:29.320:58:00.3Pdiff
Boston, Massachusetts 125.7215:39.220:58:10.2Pdiff
San Juan, Puerto Rico 126.8115:44.020:58:15.0Pdiff
Bangor, Maine 127.3315:46.420:58:17.4Pdiff
Nairobi, Kenya 129.0915:54.220:58:25.2Pdiff
Moscow, Russia 132.7816:10.520:58:41.5Pdiff
Bergen, Norway 141.5116:49.320:59:20.3Pdiff
London, England 150.9319:47.821:02:18.8PKPdf
Rome, Italy 154.0719:52.621:02:23.6PKPdf

Travel Time Information and Calculator

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