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Friday, May 02, 2008 at 01:33:37 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
Anchorage, Alaska 17.65 4:02.3 1:37:43.3Pn
Tokyo, Japan 34.25 6:41.2 1:40:22.2P
Honolulu, Hawaii 34.35 6:42.1 1:40:23.1P
Seattle, Washington 35.13 6:48.8 1:40:29.8P
San Francisco, California 40.64 7:35.2 1:41:16.2P
Los Angeles, California 45.63 8:15.5 1:41:56.5P
Beijing, China 45.85 8:17.2 1:41:58.2P
Agana, Guam 48.88 8:40.8 1:42:21.8P
Phoenix, Arizona 49.84 8:48.1 1:42:29.1P
Golden, Colorado 49.86 8:48.3 1:42:29.3P
Albuquerque, New Mexico 52.06 9:04.8 1:42:45.8P
Duluth, Minnesota 52.79 9:10.2 1:42:51.2P
Wichita, Kansas 55.79 9:32.1 1:43:13.1P
St. Louis, Missouri 59.23 9:56.3 1:43:37.3P
Ottawa, Canada 62.0410:15.5 1:43:56.5P
Knoxville, Tennessee 64.0110:28.5 1:44:09.5P
Brownsville, Texas 64.0910:29.1 1:44:10.1P
Bangor, Maine 65.7710:40.0 1:44:21.0P
Washington, D.C. 66.2110:42.8 1:44:23.8P
Philadephia, Pennsylvania 66.3710:43.9 1:44:24.9P
New York, New York 66.3810:43.9 1:44:24.9P
Boston, Massachusetts 66.5710:45.1 1:44:26.1P
Bergen, Norway 67.8510:53.3 1:44:34.3P
Mexico City, Mexico 67.9010:53.5 1:44:34.5P
Moscow, Russia 68.6210:58.1 1:44:39.1P
Kathmandu, Nepal 72.7311:23.1 1:45:04.1P
Miami, Florida 74.4611:33.2 1:45:14.2P
London, England 76.7611:46.4 1:45:27.4P
Brisbane, Australia 83.3212:21.8 1:46:02.8P
Rome, Italy 85.9912:35.2 1:46:16.2P
San Juan, Puerto Rico 88.1012:45.4 1:46:26.4P
Wellington, New Zealand 93.2313:09.2 1:46:50.2P
Lima, Peru 105.9614:06.1 1:47:47.1Pdiff
Nairobi, Kenya 121.7315:16.1 1:48:57.1Pdiff
Palmer Station, Antarctica 145.2719:31.3 1:53:12.3PKPbc

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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