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Earthquake Hazards Program

Theoretical P-Wave Travel Times

Friday, September 17, 2004 at 15:21:43 UTC

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

Theoretical P-wave Travel Times

Theoretical P-wave Travel Times

These maps show 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
Knoxville, Tennessee 1.35 0:25.915:22:08.9Pg
St. Louis, Missouri 5.24 1:19.415:23:02.4Pn
Washington, D.C. 5.85 1:27.815:23:10.8Pn
Philadephia, Pennsylvania 7.57 1:51.415:23:34.4Pn
New York, New York 8.67 2:06.615:23:49.6Pn
Ottawa, Canada 10.53 2:32.015:24:15.0Pn
Wichita, Kansas 10.64 2:33.515:24:16.5Pn
Boston, Massachusetts 11.33 2:43.015:24:26.0Pn
Duluth, Minnesota 11.54 2:45.815:24:28.8Pn
Miami, Florida 11.60 2:46.615:24:29.6Pn
Bangor, Maine 13.94 3:18.715:25:01.7Pn
Brownsville, Texas 15.90 3:45.015:25:28.0Pn
Golden, Colorado 16.86 3:57.215:25:40.2Pn
Albuquerque, New Mexico 18.39 4:16.315:25:59.3Pn
Mexico City, Mexico 21.92 4:54.715:26:37.7P
San Juan, Puerto Rico 24.18 5:17.715:27:00.7P
Los Angeles, California 27.94 5:51.715:27:34.7P
Seattle, Washington 30.03 6:10.415:27:53.4P
San Francisco, California 30.40 6:13.715:27:56.7P
Anchorage, Alaska 47.01 8:32.615:30:15.6P
Lima, Peru 49.20 8:49.615:30:32.6P
Bergen, Norway 58.42 9:57.115:31:40.1P
London, England 58.63 9:58.615:31:41.6P
Honolulu, Hawaii 64.8910:40.915:32:23.9P
Rome, Italy 70.7311:17.715:33:00.7P
Moscow, Russia 75.2211:44.315:33:27.3P
Tokyo, Japan 97.1313:33.815:35:16.8P
Beijing, China 101.2613:52.215:35:35.2Pdiff
Palmer Station, Antarctica 105.4614:10.815:35:53.8Pdiff
Agana, Guam 112.0614:40.115:36:23.1Pdiff
Kathmandu, Nepal 114.9414:52.915:36:35.9Pdiff
Nairobi, Kenya 115.0914:53.515:36:36.6Pdiff
Wellington, New Zealand 120.7015:18.415:37:01.4Pdiff
Brisbane, Australia 131.4816:06.315:37:49.3Pdiff

Travel Time Information and Calculator


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