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Earthquake Hazards Program


Thursday, September 20, 2007 at 08:31:14 UTC

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
Kathmandu, Nepal 32.85 6:30.3 8:37:45.3P
Beijing, China 44.32 8:06.4 8:39:21.4P
Agana, Guam 46.79 8:25.9 8:39:40.9P
Tokyo, Japan 52.63 9:10.4 8:40:25.4P
Brisbane, Australia 56.43 9:38.0 8:40:53.0P
Nairobi, Kenya 63.3410:25.5 8:41:40.5P
Moscow, Russia 76.6011:46.9 8:43:01.9P
Wellington, New Zealand 77.0911:49.7 8:43:04.7P
Rome, Italy 89.6312:54.1 8:44:09.1P
Bergen, Norway 94.1813:15.0 8:44:30.0P
London, England 98.0513:32.5 8:44:47.5P
Anchorage, Alaska 101.2813:46.9 8:45:01.9Pdiff
Honolulu, Hawaii 101.8913:49.6 8:45:04.6Pdiff
Palmer Station, Antarctica 109.4714:23.2 8:45:38.2Pdiff
Seattle, Washington 121.5215:16.7 8:46:31.7Pdiff
San Francisco, California 127.1815:41.8 8:46:56.8Pdiff
Los Angeles, California 132.0416:03.4 8:47:18.4Pdiff
Duluth, Minnesota 134.1916:12.9 8:47:27.9Pdiff
Golden, Colorado 135.9416:20.7 8:47:35.7Pdiff
Bangor, Maine 136.3216:22.4 8:47:37.4Pdiff
Phoenix, Arizona 136.5416:23.4 8:47:38.4Pdiff
Ottawa, Canada 136.6616:23.9 8:47:38.9Pdiff
Albuquerque, New Mexico 138.7316:33.1 8:47:48.1Pdiff
Boston, Massachusetts 139.1316:34.9 8:47:49.9Pdiff
Wichita, Kansas 140.9716:43.1 8:47:58.1Pdiff
New York, New York 141.1516:43.9 8:47:58.9Pdiff
Philadephia, Pennsylvania 142.0316:47.8 8:48:02.8Pdiff
St. Louis, Missouri 142.3216:49.0 8:48:04.0Pdiff
Washington, D.C. 143.2416:53.1 8:48:08.1Pdiff
Knoxville, Tennessee 145.9019:34.4 8:50:49.4PKPdf
Brownsville, Texas 150.8019:42.3 8:50:57.3PKPdf
Mexico City, Mexico 154.3619:47.5 8:51:02.5PKPdf
Miami, Florida 156.4119:50.3 8:51:05.3PKPdf
San Juan, Puerto Rico 158.8719:53.4 8:51:08.4PKPdf
Lima, Peru 165.6920:00.3 8:51:15.3PKPdf

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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