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Earthquake Hazards Program


Saturday, January 05, 2008 at 11:01:05 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
Seattle, Washington 6.49 1:35.511:02:40.5Pn
Anchorage, Alaska 14.51 3:25.411:04:30.4Pn
San Francisco, California 14.74 3:28.511:04:33.5Pn
Los Angeles, California 19.47 4:26.911:05:31.9P
Golden, Colorado 21.16 4:45.311:05:50.3P
Phoenix, Arizona 22.42 4:58.811:06:03.8P
Albuquerque, New Mexico 23.73 5:12.311:06:17.3P
Duluth, Minnesota 25.47 5:28.211:06:33.2P
Wichita, Kansas 27.11 5:43.011:06:48.0P
St. Louis, Missouri 30.88 6:16.511:07:21.5P
Knoxville, Tennessee 35.74 6:58.811:08:03.8P
Brownsville, Texas 35.78 6:59.211:08:04.2P
Ottawa, Canada 36.28 7:03.411:08:08.4P
Honolulu, Hawaii 36.65 7:06.611:08:11.6P
Washington, D.C. 39.02 7:26.611:08:31.6P
Philadephia, Pennsylvania 39.57 7:31.211:08:36.2P
New York, New York 39.85 7:33.511:08:38.5P
Mexico City, Mexico 40.34 7:37.611:08:42.6P
Boston, Massachusetts 40.75 7:40.911:08:45.9P
Bangor, Maine 40.82 7:41.511:08:46.5P
Miami, Florida 45.86 8:22.311:09:27.2P
San Juan, Puerto Rico 59.9310:06.211:11:11.2P
Tokyo, Japan 62.8810:26.211:11:31.2P
Bergen, Norway 63.1910:28.311:11:33.3P
London, England 69.3711:07.911:12:12.9P
Beijing, China 71.9511:23.711:12:28.7P
Moscow, Russia 72.8911:29.311:12:34.3P
Agana, Guam 76.2211:48.611:12:53.6P
Lima, Peru 78.3612:00.611:13:05.6P
Rome, Italy 81.8312:19.311:13:24.3P
Kathmandu, Nepal 95.1913:23.611:14:28.6P
Brisbane, Australia 103.0213:58.511:15:03.5Pdiff
Wellington, New Zealand 103.6914:01.511:15:06.5Pdiff
Palmer Station, Antarctica 128.6915:52.411:16:57.4Pdiff
Nairobi, Kenya 129.0715:54.111:16:59.1Pdiff

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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