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Earthquake Hazards Program


Wednesday, October 31, 2007 at 03:30:17 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
Agana, Guam 5.37 1:20.0 3:31:39.0Pn
Tokyo, Japan 17.47 3:47.4 3:34:06.4P
Beijing, China 32.55 6:08.6 3:36:27.6P
Brisbane, Australia 46.66 8:04.4 3:38:23.4P
Honolulu, Hawaii 53.21 8:53.6 3:39:12.6P
Kathmandu, Nepal 55.37 9:09.2 3:39:28.2P
Anchorage, Alaska 61.56 9:51.9 3:40:10.9P
Wellington, New Zealand 65.7610:19.2 3:40:38.2P
Seattle, Washington 77.8411:31.0 3:41:50.0P
San Francisco, California 80.4411:45.0 3:42:04.0P
Moscow, Russia 84.1112:04.0 3:42:23.0P
Los Angeles, California 84.8012:07.4 3:42:26.4P
Phoenix, Arizona 89.8212:31.3 3:42:50.3P
Golden, Colorado 92.2412:42.5 3:43:01.5P
Albuquerque, New Mexico 93.2712:47.3 3:43:06.3P
Bergen, Norway 94.6912:53.8 3:43:12.8P
Duluth, Minnesota 96.7213:02.9 3:43:21.9P
Wichita, Kansas 98.5813:11.1 3:43:30.1Pdiff
St. Louis, Missouri 102.6813:29.4 3:43:48.4Pdiff
London, England 103.7313:34.0 3:43:53.0Pdiff
Brownsville, Texas 104.4913:37.4 3:43:56.4Pdiff
Rome, Italy 105.5013:41.9 3:44:00.9Pdiff
Ottawa, Canada 105.9913:44.0 3:44:03.0Pdiff
Mexico City, Mexico 106.2013:45.0 3:44:04.0Pdiff
Knoxville, Tennessee 107.5413:50.9 3:44:09.9Pdiff
Nairobi, Kenya 107.9013:52.5 3:44:11.5Pdiff
Bangor, Maine 109.4613:59.4 3:44:18.4Pdiff
Washington, D.C. 110.2114:02.8 3:44:21.8Pdiff
New York, New York 110.3914:03.6 3:44:22.6Pdiff
Philadephia, Pennsylvania 110.4014:03.6 3:44:22.6Pdiff
Boston, Massachusetts 110.4914:04.0 3:44:23.0Pdiff
Miami, Florida 117.3814:34.6 3:44:53.6Pdiff
Palmer Station, Antarctica 127.6515:20.2 3:45:39.2Pdiff
San Juan, Puerto Rico 131.7315:38.3 3:45:57.3Pdiff
Lima, Peru 138.7016:09.2 3:46:28.2Pdiff

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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