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Earthquake Hazards Program


Thursday, October 29, 2009 at 17:44:31 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 15.14 3:23.717:47:54.7Pn
Moscow, Russia 29.51 5:45.317:50:16.3P
Beijing, China 35.80 6:39.717:51:10.8P
Rome, Italy 44.72 7:52.817:52:23.8P
Bergen, Norway 47.13 8:11.717:52:42.7P
Nairobi, Kenya 49.01 8:26.117:52:57.1P
London, England 51.18 8:42.417:53:13.4P
Tokyo, Japan 54.66 9:07.817:53:38.8P
Agana, Guam 69.3510:45.617:55:16.6P
Anchorage, Alaska 77.1911:31.517:56:02.5P
Bangor, Maine 91.1912:41.917:57:12.9P
Ottawa, Canada 93.0512:50.417:57:21.4P
Boston, Massachusetts 94.1712:55.617:57:26.6P
Seattle, Washington 95.3113:00.817:57:31.8P
Duluth, Minnesota 95.7513:02.717:57:33.8P
New York, New York 96.6513:06.817:57:37.8P
Philadelphia, Pennsylvania 97.7413:11.617:57:42.6P
Washington, D.C. 99.3313:18.717:57:49.7Pdiff
Brisbane, Australia 100.1113:22.217:57:53.2Pdiff
St. Louis, Missouri 103.2113:35.917:58:06.9Pdiff
Golden, Colorado 104.0713:39.717:58:10.7Pdiff
Knoxville, Tennessee 104.5513:41.917:58:12.9Pdiff
San Francisco, California 105.1413:44.517:58:15.5Pdiff
Wichita, Kansas 105.3213:45.317:58:16.3Pdiff
Honolulu, Hawaii 106.4813:50.517:58:21.5Pdiff
Albuquerque, New Mexico 108.7814:00.617:58:31.6Pdiff
Los Angeles, California 109.3514:03.217:58:34.2Pdiff
Phoenix, Arizona 110.4014:07.917:58:38.9Pdiff
San Juan, Puerto Rico 111.8214:14.217:58:45.2Pdiff
Miami, Florida 112.3014:16.317:58:47.3Pdiff
Brownsville, Texas 116.9914:37.117:59:08.1Pdiff
Wellington, New Zealand 122.4515:01.317:59:32.3Pdiff
Mexico City, Mexico 123.6115:06.517:59:37.5Pdiff
Palmer Station, Antarctica 139.7516:18.118:00:49.1Pdiff
Lima, Peru 142.2016:29.018:01:00.0Pdiff

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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