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Earthquake Hazards Program


Tuesday, May 08, 2007 at 15:46:49 UTC

Theoretical P-Wave Travel Times

Theoretical P-wave Travel Times

Theoretical P-wave Travel Times

These maps show 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
Seattle, Washington 7.42 1:48.915:48:37.9Pn
Golden, Colorado 7.68 1:52.415:48:41.4Pn
San Francisco, California 10.96 2:37.515:49:26.5Pn
Albuquerque, New Mexico 11.23 2:41.115:49:30.1Pn
Phoenix, Arizona 12.08 2:52.715:49:41.7Pn
Los Angeles, California 12.42 2:57.415:49:46.4Pn
Wichita, Kansas 13.46 3:11.615:50:00.6Pn
Duluth, Minnesota 13.84 3:16.815:50:05.8Pn
St. Louis, Missouri 17.55 4:05.315:50:54.3Pn
Knoxville, Tennessee 22.42 4:59.515:51:48.5P
Brownsville, Texas 22.81 5:03.715:51:52.7P
Ottawa, Canada 25.35 5:27.815:52:16.8P
Washington, D.C. 26.62 5:39.315:52:28.3P
Anchorage, Alaska 26.99 5:42.715:52:31.7P
Philadephia, Pennsylvania 27.49 5:47.215:52:36.2P
New York, New York 28.00 5:51.815:52:40.8P
Mexico City, Mexico 28.15 5:53.115:52:42.1P
Boston, Massachusetts 29.45 6:04.615:52:53.6P
Bangor, Maine 30.26 6:11.815:53:00.8P
Miami, Florida 32.25 6:29.315:53:18.3P
Honolulu, Hawaii 44.43 8:11.715:55:00.7P
San Juan, Puerto Rico 46.51 8:28.215:55:17.2P
Bergen, Norway 62.8210:26.615:57:15.6P
Lima, Peru 65.4810:44.115:57:33.1P
London, England 66.9610:53.615:57:42.6P
Moscow, Russia 75.9211:47.715:58:36.7P
Tokyo, Japan 76.4611:50.815:58:39.8P
Rome, Italy 79.9012:09.915:58:58.9P
Beijing, China 84.4812:33.815:59:22.8P
Agana, Guam 89.5212:58.315:59:47.3P
Kathmandu, Nepal 105.4214:10.016:00:59.0Pdiff
Wellington, New Zealand 108.3014:22.816:01:11.8Pdiff
Brisbane, Australia 112.3714:40.816:01:29.8Pdiff
Palmer Station, Antarctica 118.6115:08.516:01:57.5Pdiff
Nairobi, Kenya 128.1315:50.816:02:39.8Pdiff

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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