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Earthquake Hazards Program

Theoretical P-Wave Travel Times

2004 February 24 02:27:48 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
Rome, Italy 14.48 3:25.9 2:31:11.9Pn
London, England 16.49 3:52.5 2:31:38.5Pn
Bergen, Norway 25.88 5:33.1 2:33:19.1P
Moscow, Russia 34.97 6:53.5 2:34:39.5P
Bangor, Maine 49.36 8:50.7 2:36:36.7P
Boston, Massachusetts 51.59 9:07.6 2:36:53.6P
Nairobi, Kenya 52.63 9:15.4 2:37:01.4P
Ottawa, Canada 53.98 9:25.3 2:37:11.3P
New York, New York 54.16 9:26.7 2:37:12.7P
Philadephia, Pennsylvania 55.25 9:34.5 2:37:20.5P
Washington, D.C. 56.97 9:46.9 2:37:32.9P
San Juan, Puerto Rico 57.07 9:47.6 2:37:33.6P
Knoxville, Tennessee 64.0810:35.5 2:38:21.5P
Duluth, Minnesota 64.2510:36.6 2:38:22.6P
Miami, Florida 64.9110:40.9 2:38:26.9P
St. Louis, Missouri 66.5010:51.2 2:38:37.2P
Wichita, Kansas 71.8211:24.2 2:39:10.2P
Kathmandu, Nepal 74.0611:37.5 2:39:23.5P
Golden, Colorado 75.9611:48.5 2:39:34.5P
Brownsville, Texas 78.2412:01.3 2:39:47.3P
Albuquerque, New Mexico 79.5612:08.6 2:39:54.6P
Anchorage, Alaska 79.9712:10.8 2:39:56.8P
Seattle, Washington 80.6912:14.6 2:40:00.6P
Mexico City, Mexico 83.1312:27.5 2:40:13.5P
Lima, Peru 83.4912:29.3 2:40:15.3P
Beijing, China 87.2312:48.0 2:40:34.0P
San Francisco, California 87.6512:50.0 2:40:36.0P
Los Angeles, California 87.6812:50.2 2:40:36.2P
Tokyo, Japan 101.7813:54.4 2:41:40.4Pdiff
Palmer Station, Antarctica 112.0714:40.0 2:42:26.0Pdiff
Honolulu, Hawaii 118.5515:08.8 2:42:54.8Pdiff
Agana, Guam 123.2215:29.5 2:43:15.5Pdiff
Brisbane, Australia 158.9019:58.9 2:47:44.9PKPdf
Wellington, New Zealand 173.8820:10.7 2:47:56.7PKPdf
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