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Earthquake Hazards Program

Theoretical P-Wave Travel Times

Saturday, October 09, 2004 at 21:26:53 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
Mexico City, Mexico 14.53 3:22.221:30:18.2Pn
Miami, Florida 15.49 3:34.721:30:30.7Pn
Brownsville, Texas 17.74 4:02.721:30:58.7Pn
San Juan, Puerto Rico 20.93 4:37.621:31:33.5P
Knoxville, Tennessee 24.46 5:13.121:32:09.1P
Lima, Peru 25.19 5:19.721:32:15.7P
St. Louis, Missouri 27.34 5:39.121:32:35.1P
Wichita, Kansas 27.97 5:44.721:32:40.7P
Washington, D.C. 28.65 5:50.821:32:46.8P
Albuquerque, New Mexico 29.81 6:01.021:32:57.0P
Philadephia, Pennsylvania 30.16 6:04.221:33:00.2P
New York, New York 31.21 6:13.421:33:09.4P
Golden, Colorado 32.71 6:26.521:33:22.5P
Boston, Massachusetts 33.63 6:34.621:33:30.6P
Ottawa, Canada 35.13 6:47.521:33:43.5P
Duluth, Minnesota 35.54 6:51.021:33:47.0P
Bangor, Maine 36.61 7:00.121:33:56.1P
Los Angeles, California 36.66 7:00.521:33:56.5P
San Francisco, California 41.45 7:40.521:34:36.5P
Seattle, Washington 47.03 8:25.221:35:21.2P
Anchorage, Alaska 67.3710:48.721:37:44.7P
Honolulu, Hawaii 68.6310:56.621:37:52.6P
London, England 78.9311:56.921:38:52.9P
Palmer Station, Antarctica 80.6212:06.121:39:02.1P
Bergen, Norway 81.1112:08.721:39:04.7P
Rome, Italy 89.1112:48.621:39:44.6P
Moscow, Russia 98.6213:32.021:40:28.0Pdiff
Wellington, New Zealand 103.9213:55.521:40:51.5Pdiff
Tokyo, Japan 115.9514:48.921:41:44.9Pdiff
Brisbane, Australia 122.1215:16.321:42:12.3Pdiff
Nairobi, Kenya 122.9415:19.921:42:15.9Pdiff
Agana, Guam 123.4315:22.121:42:18.1Pdiff
Beijing, China 124.6615:27.621:42:23.6Pdiff
Kathmandu, Nepal 140.3416:37.221:43:33.2Pdiff

Travel Time Information and Calculator


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