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Earthquake Hazards Program


Sunday, April 01, 2007 at 20:39:57 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
Brisbane, Australia 19.29 4:24.920:44:20.9P
Agana, Guam 24.93 5:23.320:45:19.3P
Wellington, New Zealand 36.30 7:03.620:46:59.6P
Tokyo, Japan 46.79 8:29.620:48:25.6P
Honolulu, Hawaii 53.35 9:19.420:49:15.4P
Beijing, China 60.9910:13.520:50:09.5P
Kathmandu, Nepal 77.9511:58.320:51:54.3P
Anchorage, Alaska 80.8412:14.120:52:10.1P
San Francisco, California 87.8012:49.320:52:45.3P
Seattle, Washington 90.0412:59.820:52:55.8P
Los Angeles, California 90.4113:01.620:52:57.6P
Phoenix, Arizona 95.4113:24.620:53:20.6P
Palmer Station, Antarctica 98.5613:38.720:53:34.7Pdiff
Albuquerque, New Mexico 100.0413:45.320:53:41.3Pdiff
Golden, Colorado 101.3813:51.220:53:47.2Pdiff
Mexico City, Mexico 105.8114:10.920:54:06.9Pdiff
Wichita, Kansas 107.5514:18.620:54:14.6Pdiff
Brownsville, Texas 107.6014:18.820:54:14.8Pdiff
Duluth, Minnesota 110.4114:31.320:54:27.3Pdiff
St. Louis, Missouri 113.0314:42.920:54:38.9Pdiff
Moscow, Russia 113.2014:43.720:54:39.7Pdiff
Knoxville, Tennessee 117.4515:02.520:54:58.5Pdiff
Nairobi, Kenya 119.5415:11.820:55:07.8Pdiff
Ottawa, Canada 121.7615:21.720:55:17.7Pdiff
Lima, Peru 122.5615:25.320:55:21.2Pdiff
Washington, D.C. 123.0515:27.420:55:23.4Pdiff
Miami, Florida 123.1915:28.020:55:24.0Pdiff
Bergen, Norway 124.0115:31.720:55:27.7Pdiff
Philadephia, Pennsylvania 124.1015:32.020:55:28.0Pdiff
New York, New York 124.6615:34.620:55:30.6Pdiff
Boston, Massachusetts 126.0615:40.820:55:36.8Pdiff
Bangor, Maine 126.4815:42.620:55:38.6Pdiff
London, England 133.1516:12.220:56:08.2Pdiff
Rome, Italy 134.3016:17.320:56:13.3Pdiff
San Juan, Puerto Rico 137.0416:29.520:56:25.5Pdiff

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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