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Earthquake Hazards Program

Theoretical P-Wave Travel Times

Monday, September 06, 2004 at 23:29:35 UTC

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

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
Tokyo, Japan 3.22 0:50.623:30:25.5Pn
Beijing, China 17.98 4:10.023:33:45.0Pn
Agana, Guam 20.81 4:41.523:34:16.5P
Kathmandu, Nepal 44.72 8:13.223:37:48.2P
Anchorage, Alaska 53.38 9:19.623:38:54.6P
Honolulu, Hawaii 58.12 9:53.623:39:28.6P
Brisbane, Australia 62.2010:21.623:39:56.6P
Moscow, Russia 68.2211:00.723:40:35.7P
Seattle, Washington 72.5411:27.223:41:02.2P
San Francisco, California 77.7011:56.923:41:31.9P
Bergen, Norway 78.7612:02.823:41:37.8P
Wellington, New Zealand 81.7912:19.123:41:54.1P
Los Angeles, California 82.5812:23.323:41:58.3P
Golden, Colorado 87.2512:46.723:42:21.7P
London, England 87.7312:49.023:42:24.0P
Duluth, Minnesota 88.8312:54.223:42:29.2P
Albuquerque, New Mexico 89.4912:57.323:42:32.3P
Rome, Italy 89.6712:58.123:42:33.1P
Wichita, Kansas 93.0313:13.723:42:48.7P
St. Louis, Missouri 96.0013:27.223:43:02.2P
Ottawa, Canada 96.2413:28.323:43:03.3P
Bangor, Maine 98.8513:40.023:43:15.0Pdiff
Nairobi, Kenya 99.4013:42.423:43:17.4Pdiff
Boston, Massachusetts 100.4713:47.223:43:22.2Pdiff
Knoxville, Tennessee 100.6013:47.723:43:22.7Pdiff
New York, New York 101.0013:49.523:43:24.5Pdiff
Philadephia, Pennsylvania 101.2813:50.823:43:25.8Pdiff
Brownsville, Texas 101.5013:51.723:43:26.7Pdiff
Washington, D.C. 101.5313:51.923:43:26.9Pdiff
Mexico City, Mexico 104.9414:07.023:43:42.0Pdiff
Miami, Florida 111.4014:35.723:44:10.7Pdiff
San Juan, Puerto Rico 123.9715:31.523:45:06.5Pdiff
Lima, Peru 142.2916:52.823:46:27.8Pdiff
Palmer Station, Antarctica 143.2616:57.123:46:32.1Pdiff

Travel Time Information and Calculator


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