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Earthquake Hazards Program

Theoretical P-Wave Travel Times


Friday, October 20, 2006 at 10:48:55 UTC

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
Lima, Peru 1.40 0:23.210:49:20.2Pn
San Juan, Puerto Rico 33.33 6:34.710:55:31.7P
Miami, Florida 39.11 7:24.010:56:21.0P
Mexico City, Mexico 39.50 7:27.310:56:24.3P
Brownsville, Texas 44.08 8:04.710:57:01.7P
Knoxville, Tennessee 49.77 8:49.210:57:46.2P
Washington, D.C. 52.04 9:06.310:58:03.3P
Philadephia, Pennsylvania 53.11 9:14.210:58:11.2P
St. Louis, Missouri 53.37 9:16.110:58:13.1P
New York, New York 53.91 9:20.110:58:17.1P
Wichita, Kansas 54.52 9:24.510:58:21.5P
Palmer Station, Antarctica 54.91 9:27.410:58:24.4P
Boston, Massachusetts 55.71 9:33.110:58:30.1P
Albuquerque, New Mexico 56.04 9:35.410:58:32.4P
Phoenix, Arizona 57.61 9:46.610:58:43.6P
Bangor, Maine 58.38 9:52.010:58:49.0P
Ottawa, Canada 58.57 9:53.310:58:50.3P
Golden, Colorado 59.23 9:57.910:58:54.9P
Duluth, Minnesota 61.5110:13.510:59:10.5P
Los Angeles, California 61.6510:14.510:59:11.5P
San Francisco, California 66.6510:47.310:59:44.3P
Seattle, Washington 73.3011:28.111:00:25.1P
Honolulu, Hawaii 86.8812:41.311:01:38.3P
London, England 92.1313:05.911:02:02.9P
Anchorage, Alaska 93.8313:13.711:02:10.8P
Wellington, New Zealand 94.7513:18.011:02:15.0P
Bergen, Norway 97.5913:30.811:02:27.8P
Rome, Italy 98.1413:33.211:02:30.2P
Nairobi, Kenya 112.4114:36.611:03:33.6Pdiff
Moscow, Russia 114.6114:46.311:03:43.3Pdiff
Brisbane, Australia 117.0414:57.111:03:54.1Pdiff
Agana, Guam 139.8516:38.311:05:35.3Pdiff
Tokyo, Japan 140.5616:41.511:05:38.5Pdiff
Beijing, China 151.2419:43.211:08:40.2PKPdf
Kathmandu, Nepal 157.9319:52.511:08:49.5PKPdf

Travel Time Information and Calculator

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


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