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Earthquake Hazards Program


Wednesday, February 20, 2008 at 08:08:30 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
Kathmandu, Nepal 26.82 5:37.0 8:14:08.0P
Beijing, China 41.39 7:42.7 8:16:13.7P
Agana, Guam 49.36 8:45.8 8:17:16.8P
Tokyo, Japan 52.05 9:06.2 8:17:37.2P
Nairobi, Kenya 59.25 9:57.9 8:18:28.9P
Brisbane, Australia 62.5510:20.3 8:18:51.3P
Moscow, Russia 70.3511:10.2 8:19:41.2P
Rome, Italy 83.3112:23.3 8:20:54.3P
Wellington, New Zealand 83.4112:23.8 8:20:54.8P
Bergen, Norway 87.9512:46.3 8:21:17.3P
London, England 91.6913:03.7 8:21:34.7P
Anchorage, Alaska 98.9713:36.7 8:22:07.7Pdiff
Honolulu, Hawaii 104.0413:59.2 8:22:30.2Pdiff
Palmer Station, Antarctica 113.6614:41.9 8:23:12.9Pdiff
Seattle, Washington 119.5715:08.1 8:23:39.1Pdiff
San Francisco, California 126.2615:37.8 8:24:08.8Pdiff
Duluth, Minnesota 130.2015:55.3 8:24:26.3Pdiff
Bangor, Maine 130.7415:57.7 8:24:28.7Pdiff
Los Angeles, California 131.2515:60.0 8:24:31.0Pdiff
Ottawa, Canada 131.4816:01.0 8:24:32.0Pdiff
Golden, Colorado 133.4616:09.8 8:24:40.8Pdiff
Boston, Massachusetts 133.6216:10.5 8:24:41.5Pdiff
Phoenix, Arizona 135.3216:18.1 8:24:49.1Pdiff
New York, New York 135.7916:20.2 8:24:51.2Pdiff
Philadephia, Pennsylvania 136.7416:24.4 8:24:55.4Pdiff
Albuquerque, New Mexico 136.8116:24.7 8:24:55.7Pdiff
Wichita, Kansas 137.8516:29.3 8:25:00.3Pdiff
Washington, D.C. 138.0716:30.3 8:25:01.3Pdiff
St. Louis, Missouri 138.4016:31.7 8:25:02.7Pdiff
Knoxville, Tennessee 141.4916:45.5 8:25:16.5Pdiff
Brownsville, Texas 148.6819:39.0 8:28:10.0PKPdf
Miami, Florida 151.4119:43.3 8:28:14.3PKPdf
San Juan, Puerto Rico 152.5119:45.0 8:28:16.0PKPdf
Mexico City, Mexico 153.4219:46.3 8:28:17.3PKPdf
Lima, Peru 168.4220:02.5 8:28:33.5PKPdf

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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