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Earthquake Hazards Program

Theoretical P-Wave Travel Times

Thursday, December 23, 2004 at 14:59:03 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
Wellington, New Zealand 13.58 3:12.615:02:16.6Pn
Brisbane, Australia 23.35 5:08.615:04:12.6P
Palmer Station, Antarctica 57.75 9:51.015:08:55.0P
Agana, Guam 64.8510:39.215:09:43.2P
Honolulu, Hawaii 80.3412:11.415:11:15.4P
Tokyo, Japan 87.4012:47.415:11:51.4P
Beijing, China 97.6313:34.615:12:38.6P
Lima, Peru 100.4213:46.915:12:50.9Pdiff
Kathmandu, Nepal 101.8413:53.315:12:57.3Pdiff
Nairobi, Kenya 109.6014:27.715:13:31.7Pdiff
Los Angeles, California 110.4614:31.515:13:35.5Pdiff
San Francisco, California 110.9114:33.515:13:37.5Pdiff
Mexico City, Mexico 111.4614:36.015:13:40.0Pdiff
Brownsville, Texas 117.1915:01.415:14:05.4Pdiff
Albuquerque, New Mexico 117.9215:04.615:14:08.6Pdiff
Anchorage, Alaska 118.0915:05.415:14:09.4Pdiff
Seattle, Washington 118.2115:05.915:14:09.9Pdiff
Golden, Colorado 121.9015:22.315:14:26.3Pdiff
Wichita, Kansas 125.3015:37.415:14:41.4Pdiff
Miami, Florida 128.1815:50.215:14:54.2Pdiff
St. Louis, Missouri 130.2215:59.215:15:03.2Pdiff
San Juan, Puerto Rico 131.5216:05.015:15:09.0Pdiff
Knoxville, Tennessee 131.7416:06.015:15:10.0Pdiff
Duluth, Minnesota 133.6916:14.715:15:18.7Pdiff
Washington, D.C. 138.6816:36.815:15:40.8Pdiff
Philadephia, Pennsylvania 140.4716:44.715:15:48.7Pdiff
New York, New York 141.6316:49.915:15:53.9Pdiff
Ottawa, Canada 142.9416:55.715:15:59.7Pdiff
Boston, Massachusetts 144.3517:02.015:16:06.0Pdiff
Moscow, Russia 145.7919:38.215:18:42.2PKPdf
Bangor, Maine 147.0219:40.215:18:44.2PKPdf
Rome, Italy 156.1919:54.015:18:58.0PKPdf
Bergen, Norway 162.5420:01.415:19:05.4PKPdf
London, England 167.4920:05.815:19:09.8PKPdf

Travel Time Information and Calculator


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