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Earthquake Hazards Program


Saturday, January 03, 2009 at 19:43:50 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
Agana, Guam 18.26 4:10.519:48:04.5P
Brisbane, Australia 33.11 6:32.619:50:26.6P
Tokyo, Japan 36.57 7:02.319:50:56.3P
Beijing, China 42.91 7:55.119:51:49.1P
Kathmandu, Nepal 53.46 9:16.519:53:10.5P
Wellington, New Zealand 55.54 9:31.619:53:25.6P
Honolulu, Hawaii 71.0311:14.319:55:08.3P
Anchorage, Alaska 84.3512:28.519:56:22.5P
Moscow, Russia 93.2913:11.019:57:05.0P
Nairobi, Kenya 95.9313:23.019:57:17.0P
Seattle, Washington 100.3713:42.819:57:36.8Pdiff
San Francisco, California 102.0013:50.019:57:44.0Pdiff
Los Angeles, California 105.9614:07.619:58:01.6Pdiff
Bergen, Norway 108.0414:16.919:58:10.9Pdiff
Palmer Station, Antarctica 110.8614:29.419:58:23.4Pdiff
Phoenix, Arizona 111.1114:30.519:58:24.5Pdiff
Rome, Italy 112.4814:36.619:58:30.6Pdiff
Golden, Colorado 114.4814:45.519:58:39.5Pdiff
Albuquerque, New Mexico 114.9914:47.719:58:41.7Pdiff
London, England 115.6514:50.619:58:44.6Pdiff
Duluth, Minnesota 119.5515:07.919:59:01.9Pdiff
Wichita, Kansas 120.9115:14.019:59:08.0Pdiff
St. Louis, Missouri 125.2915:33.519:59:27.5Pdiff
Brownsville, Texas 125.4115:34.019:59:28.0Pdiff
Mexico City, Mexico 125.7815:35.619:59:29.6Pdiff
Ottawa, Canada 128.7015:48.619:59:42.6Pdiff
Knoxville, Tennessee 130.1715:55.119:59:49.1Pdiff
Bangor, Maine 131.9516:03.019:59:57.0Pdiff
Washington, D.C. 133.0516:07.920:00:01.9Pdiff
Boston, Massachusetts 133.1616:08.420:00:02.4Pdiff
New York, New York 133.1816:08.520:00:02.5Pdiff
Philadephia, Pennsylvania 133.2216:08.620:00:02.6Pdiff
Miami, Florida 139.5016:36.520:00:30.5Pdiff
Lima, Peru 147.8519:38.820:03:32.8PKPdf
San Juan, Puerto Rico 154.2319:48.920:03:42.9PKPdf

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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