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Earthquake Hazards Program


Thursday, August 02, 2007 at 03:21:42 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
Anchorage, Alaska 19.19 4:19.7 3:26:05.7P
Tokyo, Japan 32.71 6:27.8 3:28:13.8P
Honolulu, Hawaii 34.59 6:44.1 3:28:30.1P
Seattle, Washington 36.70 7:02.2 3:28:48.2P
San Francisco, California 42.10 7:47.1 3:29:33.1P
Beijing, China 44.60 8:07.3 3:29:53.3P
Los Angeles, California 47.07 8:26.8 3:30:12.8P
Agana, Guam 47.31 8:28.7 3:30:14.7P
Phoenix, Arizona 51.32 8:59.3 3:30:45.3P
Golden, Colorado 51.44 9:00.1 3:30:46.1P
Albuquerque, New Mexico 53.60 9:16.1 3:31:02.1P
Duluth, Minnesota 54.38 9:21.9 3:31:07.9P
Wichita, Kansas 57.38 9:43.3 3:31:29.3P
St. Louis, Missouri 60.8310:07.2 3:31:53.2P
Ottawa, Canada 63.6110:25.9 3:32:11.9P
Knoxville, Tennessee 65.6110:38.9 3:32:24.9P
Brownsville, Texas 65.6210:39.0 3:32:25.0P
Bangor, Maine 67.3110:49.8 3:32:35.8P
Washington, D.C. 67.8010:52.9 3:32:38.9P
New York, New York 67.9610:53.9 3:32:39.9P
Philadephia, Pennsylvania 67.9610:53.9 3:32:39.9P
Boston, Massachusetts 68.1410:55.0 3:32:41.0P
Bergen, Norway 68.5410:57.5 3:32:43.5P
Moscow, Russia 68.8010:59.1 3:32:45.1P
Mexico City, Mexico 69.3711:02.7 3:32:48.7P
Kathmandu, Nepal 71.7011:16.9 3:33:02.9P
Miami, Florida 76.0511:42.4 3:33:28.4P
London, England 77.5311:50.7 3:33:36.7P
Brisbane, Australia 82.0512:15.1 3:34:01.1P
Rome, Italy 86.5212:37.7 3:34:23.7P
San Juan, Puerto Rico 89.7012:52.8 3:34:38.8P
Wellington, New Zealand 92.3713:05.2 3:34:51.2P
Lima, Peru 107.3914:12.5 3:35:58.5Pdiff
Nairobi, Kenya 121.3015:14.2 3:37:00.2Pdiff
Palmer Station, Antarctica 145.5419:32.1 3:41:18.1PKPbc

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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