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Earthquake Hazards Program


Thursday, September 11, 2008 at 00:00:02 UTC

Theoretical P-Wave Travel Times

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
Agana, Guam 20.65 4:32.0 0:04:34.0P
Tokyo, Japan 35.52 6:47.8 0:06:49.8P
Brisbane, Australia 38.17 7:10.2 0:07:12.2P
Beijing, China 39.18 7:18.6 0:07:20.6P
Kathmandu, Nepal 47.76 8:27.5 0:08:29.5P
Wellington, New Zealand 60.7110:01.5 0:10:03.5P
Honolulu, Hawaii 75.1011:31.8 0:11:33.8P
Anchorage, Alaska 84.8412:24.2 0:12:26.2P
Moscow, Russia 88.3312:41.2 0:12:43.2P
Nairobi, Kenya 90.6512:52.0 0:12:54.0P
Seattle, Washington 102.0913:43.6 0:13:45.6Pdiff
Bergen, Norway 103.6513:50.5 0:13:52.5Pdiff
San Francisco, California 104.6613:55.0 0:13:57.0Pdiff
Rome, Italy 107.0614:05.7 0:14:07.7Pdiff
Los Angeles, California 108.8914:13.8 0:14:15.8Pdiff
London, England 110.8614:22.6 0:14:24.6Pdiff
Palmer Station, Antarctica 113.7314:35.3 0:14:37.3Pdiff
Phoenix, Arizona 113.9714:36.4 0:14:38.4Pdiff
Golden, Colorado 116.5614:47.8 0:14:49.8Pdiff
Albuquerque, New Mexico 117.5514:52.3 0:14:54.3Pdiff
Duluth, Minnesota 120.4115:04.9 0:15:06.9Pdiff
Wichita, Kansas 122.8715:15.9 0:15:17.9Pdiff
St. Louis, Missouri 126.8115:33.4 0:15:35.4Pdiff
Brownsville, Texas 128.5515:41.1 0:15:43.1Pdiff
Ottawa, Canada 128.6415:41.5 0:15:43.5Pdiff
Mexico City, Mexico 129.6015:45.7 0:15:47.7Pdiff
Bangor, Maine 131.3515:53.5 0:15:55.5Pdiff
Knoxville, Tennessee 131.6315:54.8 0:15:56.8Pdiff
Boston, Massachusetts 132.9316:00.5 0:16:02.5Pdiff
New York, New York 133.3316:02.3 0:16:04.3Pdiff
Philadephia, Pennsylvania 133.5316:03.2 0:16:05.2Pdiff
Washington, D.C. 133.6116:03.5 0:16:05.5Pdiff
Miami, Florida 141.6816:39.4 0:16:41.4Pdiff
Lima, Peru 153.6819:39.4 0:19:41.4PKPdf
San Juan, Puerto Rico 155.7719:42.3 0:19:44.3PKPdf

Travel Time Information and Calculator

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

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