Theoretical P-Wave Travel Times

Friday, December 07, 2012 at 08:18:24 UTC

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
Tokyo, Japan 4.13 1:00.6 8:19:24.6Pn
Beijing, China 21.59 4:46.6 8:23:10.6P
Agana, Guam 24.33 5:14.2 8:23:38.2P
Anchorage, Alaska 46.31 8:22.0 8:26:46.0P
Kathmandu, Nepal 49.73 8:48.5 8:27:12.5P
Honolulu, Hawaii 52.33 9:08.1 8:27:32.1P
Seattle, Washington 65.2810:38.1 8:29:02.1P
Brisbane, Australia 65.5710:40.0 8:29:04.0P
Moscow, Russia 67.7810:54.1 8:29:18.1P
San Francisco, California 70.4411:10.6 8:29:34.6P
Los Angeles, California 75.3411:39.6 8:30:03.6P
Bergen, Norway 76.4011:45.7 8:30:09.7P
Phoenix, Arizona 79.7912:04.5 8:30:28.5P
Golden, Colorado 80.0012:05.6 8:30:29.6P
Duluth, Minnesota 81.8512:15.5 8:30:39.5P
Albuquerque, New Mexico 82.2112:17.3 8:30:41.3P
Wellington, New Zealand 83.6312:24.7 8:30:48.7P
London, England 85.6512:34.9 8:30:58.9P
Wichita, Kansas 85.8212:35.7 8:30:59.7P
St. Louis, Missouri 88.8912:50.5 8:31:14.5P
Rome, Italy 89.1712:51.8 8:31:15.8P
Ottawa, Canada 89.6612:54.1 8:31:18.1P
Bangor, Maine 92.5113:07.3 8:31:31.3P
Knoxville, Tennessee 93.5413:12.0 8:31:36.0P
Boston, Massachusetts 93.9813:14.0 8:31:38.0P
Brownsville, Texas 94.2113:15.1 8:31:39.1P
New York, New York 94.3613:15.8 8:31:39.8P
Philadelphia, Pennsylvania 94.5813:16.8 8:31:40.8P
Washington, D.C. 94.7513:17.5 8:31:41.5P
Mexico City, Mexico 97.7013:30.8 8:31:54.8P
Miami, Florida 104.2714:00.0 8:32:24.0Pdiff
Nairobi, Kenya 104.3814:00.5 8:32:24.5Pdiff
San Juan, Puerto Rico 117.1414:57.2 8:33:21.2Pdiff
Lima, Peru 135.2516:17.5 8:34:41.5Pdiff
Palmer Station, Antarctica 146.2019:35.6 8:37:59.6PKPbc

Travel Time Information and Calculator

Preliminary Earthquake Report
U.S. Geological Survey, National Earthquake Information Center
World Data Center for Seismology, Denver