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Earthquake Hazards Program


Saturday, April 12, 2008 at 00:30:12 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
Wellington, New Zealand 17.92 4:09.3 0:34:22.3Pn
Brisbane, Australia 28.30 5:53.7 0:36:06.7P
Palmer Station, Antarctica 53.04 9:17.1 0:39:30.1P
Agana, Guam 69.7011:09.9 0:41:22.9P
Honolulu, Hawaii 85.1412:36.3 0:42:49.3P
Tokyo, Japan 92.2313:10.0 0:43:23.0P
Lima, Peru 98.3113:37.6 0:43:50.6P
Beijing, China 101.5613:52.0 0:44:05.0Pdiff
Kathmandu, Nepal 103.4814:00.5 0:44:13.5Pdiff
Nairobi, Kenya 106.1614:12.4 0:44:25.4Pdiff
Mexico City, Mexico 112.8414:42.1 0:44:55.1Pdiff
Los Angeles, California 113.8814:46.7 0:44:59.7Pdiff
San Francisco, California 114.7114:50.4 0:45:03.4Pdiff
Phoenix, Arizona 116.6314:58.9 0:45:11.9Pdiff
Brownsville, Texas 118.8715:08.9 0:45:21.9Pdiff
Albuquerque, New Mexico 120.7915:17.4 0:45:30.4Pdiff
Seattle, Washington 122.4815:24.9 0:45:37.9Pdiff
Anchorage, Alaska 123.3615:28.8 0:45:41.8Pdiff
Golden, Colorado 125.0015:36.1 0:45:49.1Pdiff
Wichita, Kansas 127.8415:48.7 0:46:01.7Pdiff
Miami, Florida 128.5715:51.9 0:46:04.9Pdiff
San Juan, Puerto Rico 130.1115:58.7 0:46:11.7Pdiff
St. Louis, Missouri 132.4216:09.0 0:46:22.0Pdiff
Knoxville, Tennessee 133.3816:13.3 0:46:26.3Pdiff
Duluth, Minnesota 136.7216:28.1 0:46:41.1Pdiff
Washington, D.C. 140.0616:42.9 0:46:55.9Pdiff
Philadephia, Pennsylvania 141.8416:50.8 0:47:03.8Pdiff
New York, New York 143.0016:56.0 0:47:09.0Pdiff
Ottawa, Canada 145.0019:35.9 0:49:48.9PKPbc
Boston, Massachusetts 145.7219:38.1 0:49:51.1PKPdf
Moscow, Russia 147.3819:40.8 0:49:53.8PKPdf
Bangor, Maine 148.5819:42.8 0:49:55.8PKPdf
Rome, Italy 153.9319:50.9 0:50:03.9PKPdf
Bergen, Norway 164.9320:03.7 0:50:16.7PKPdf
London, England 166.5820:05.1 0:50:18.1PKPdf

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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