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Earthquake Hazards Program


Wednesday, September 30, 2009 at 10:16:09 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 31.62 6:14.810:22:24.8P
Beijing, China 43.24 7:52.610:24:02.6P
Agana, Guam 46.62 8:19.510:24:29.5P
Tokyo, Japan 51.88 8:59.610:25:09.6P
Brisbane, Australia 57.31 9:38.910:25:48.9P
Nairobi, Kenya 63.0910:18.410:26:28.4P
Moscow, Russia 75.4011:34.510:27:44.5P
Wellington, New Zealand 78.1111:49.710:27:59.7P
Rome, Italy 88.6112:43.410:28:53.4P
Bergen, Norway 92.9713:03.710:29:13.7P
London, England 96.9213:21.610:29:31.6P
Anchorage, Alaska 100.3113:36.710:29:46.7Pdiff
Honolulu, Hawaii 101.6913:42.810:29:52.8Pdiff
Palmer Station, Antarctica 110.6614:22.610:30:32.6Pdiff
Seattle, Washington 120.6215:06.810:31:16.8Pdiff
San Francisco, California 126.4515:32.710:31:42.7Pdiff
Los Angeles, California 131.3315:54.410:32:04.4Pdiff
Duluth, Minnesota 133.0316:01.910:32:11.9Pdiff
Golden, Colorado 134.9716:10.610:32:20.6Pdiff
Bangor, Maine 135.0616:10.910:32:20.9Pdiff
Ottawa, Canada 135.4116:12.510:32:22.5Pdiff
Phoenix, Arizona 135.7716:14.110:32:24.1Pdiff
Albuquerque, New Mexico 137.8616:23.310:32:33.3Pdiff
Boston, Massachusetts 137.8716:23.410:32:33.4Pdiff
New York, New York 139.9016:32.410:32:42.4Pdiff
Wichita, Kansas 139.9316:32.510:32:42.5Pdiff
Philadelphia, Pennsylvania 140.7816:36.310:32:46.3Pdiff
St. Louis, Missouri 141.1816:38.110:32:48.1Pdiff
Washington, D.C. 141.9916:41.710:32:51.7Pdiff
Knoxville, Tennessee 144.7116:53.810:33:03.8Pdiff
Brownsville, Texas 149.9219:36.010:35:46.0PKPdf
Mexico City, Mexico 153.6919:41.910:35:51.9PKPdf
Miami, Florida 155.1819:44.110:35:54.1PKPdf
San Juan, Puerto Rico 157.7319:47.510:35:57.6PKPdf
Lima, Peru 166.8419:57.210:36:07.2PKPdf

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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