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Saturday, January 03, 2009 at 22:33:40 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 18.12 4:08.122:37:50.1P
Brisbane, Australia 32.69 6:27.822:40:09.9P
Tokyo, Japan 36.69 7:02.422:40:44.4P
Beijing, China 43.25 7:56.822:41:38.8P
Kathmandu, Nepal 53.96 9:19.122:43:01.1P
Wellington, New Zealand 55.09 9:27.322:43:09.3P
Honolulu, Hawaii 70.6711:11.022:44:53.0P
Anchorage, Alaska 84.3012:27.022:46:09.0P
Moscow, Russia 93.7213:11.722:46:53.7P
Nairobi, Kenya 96.4013:23.922:47:05.9P
Seattle, Washington 100.2013:40.922:47:22.9Pdiff
San Francisco, California 101.7513:47.722:47:29.7Pdiff
Los Angeles, California 105.6914:05.222:47:47.2Pdiff
Bergen, Norway 108.4214:17.322:47:59.3Pdiff
Palmer Station, Antarctica 110.6014:27.022:48:09.0Pdiff
Phoenix, Arizona 110.8414:28.122:48:10.1Pdiff
Rome, Italy 112.9514:37.522:48:19.5Pdiff
Golden, Colorado 114.2814:43.422:48:25.4Pdiff
Albuquerque, New Mexico 114.7414:45.422:48:27.4Pdiff
London, England 116.0614:51.222:48:33.2Pdiff
Duluth, Minnesota 119.4515:06.322:48:48.3Pdiff
Wichita, Kansas 120.7115:11.922:48:53.9Pdiff
Brownsville, Texas 125.1115:31.422:49:13.4Pdiff
St. Louis, Missouri 125.1315:31.522:49:13.5Pdiff
Mexico City, Mexico 125.4315:32.822:49:14.8Pdiff
Ottawa, Canada 128.6815:47.322:49:29.3Pdiff
Knoxville, Tennessee 130.0115:53.222:49:35.2Pdiff
Bangor, Maine 131.9616:01.822:49:43.8Pdiff
Washington, D.C. 132.9616:06.322:49:48.3Pdiff
New York, New York 133.1416:07.022:49:49.0Pdiff
Boston, Massachusetts 133.1516:07.122:49:49.1Pdiff
Philadephia, Pennsylvania 133.1516:07.122:49:49.1Pdiff
Miami, Florida 139.2716:34.322:50:16.3Pdiff
Lima, Peru 147.3419:36.622:53:18.6PKPdf
San Juan, Puerto Rico 154.0419:47.322:53:29.3PKPdf

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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