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
Agana, Guam 21.82 4:50.4 5:26:07.4P
Brisbane, Australia 32.70 6:30.4 5:27:47.4P
Tokyo, Japan 39.48 7:28.3 5:28:45.3P
Beijing, China 44.52 8:09.5 5:29:26.5P
Kathmandu, Nepal 52.87 9:13.7 5:30:30.7P
Wellington, New Zealand 55.25 9:31.0 5:30:48.0P
Honolulu, Hawaii 74.3711:35.8 5:32:52.8P
Anchorage, Alaska 87.7412:46.8 5:34:03.8P
Nairobi, Kenya 93.2913:12.6 5:34:29.6P
Moscow, Russia 93.8613:15.2 5:34:32.2P
Seattle, Washington 103.9314:00.2 5:35:17.2Pdiff
San Francisco, California 105.5514:07.5 5:35:24.5Pdiff
Palmer Station, Antarctica 108.6914:21.4 5:35:38.4Pdiff
Bergen, Norway 109.1814:23.6 5:35:40.6Pdiff
Los Angeles, California 109.4914:25.0 5:35:42.0Pdiff
Rome, Italy 112.4014:37.8 5:35:54.8Pdiff
Phoenix, Arizona 114.6514:47.8 5:36:04.8Pdiff
London, England 116.4014:55.6 5:36:12.6Pdiff
Golden, Colorado 118.0615:03.0 5:36:20.0Pdiff
Albuquerque, New Mexico 118.5515:05.1 5:36:22.1Pdiff
Duluth, Minnesota 123.0315:25.1 5:36:42.1Pdiff
Wichita, Kansas 124.4815:31.5 5:36:48.5Pdiff
St. Louis, Missouri 128.8515:50.9 5:37:07.9Pdiff
Brownsville, Texas 128.9015:51.1 5:37:08.1Pdiff
Mexico City, Mexico 129.1315:52.1 5:37:09.1Pdiff
Ottawa, Canada 132.0316:05.0 5:37:22.0Pdiff
Knoxville, Tennessee 133.7216:12.5 5:37:29.5Pdiff
Bangor, Maine 135.1416:18.8 5:37:35.8Pdiff
Boston, Massachusetts 136.4616:24.6 5:37:41.6Pdiff
Washington, D.C. 136.5016:24.8 5:37:41.8Pdiff
New York, New York 136.5616:25.1 5:37:42.1Pdiff
Philadelphia, Pennsylvania 136.6316:25.4 5:37:42.4Pdiff
Miami, Florida 143.0716:54.0 5:38:11.0Pdiff
Lima, Peru 149.0519:42.5 5:40:59.5PKPdf
San Juan, Puerto Rico 157.8119:55.5 5:41:12.5PKPdf

Travel Time Information and Calculator

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