Theoretical P-Wave Travel Times

Friday, August 19, 2011 at 05:36:32 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 2.57 0:39.0 5:37:11.0Pn
Beijing, China 19.85 4:27.5 5:40:59.5P
Agana, Guam 24.25 5:13.2 5:41:45.2P
Anchorage, Alaska 47.61 8:31.9 5:45:03.9P
Kathmandu, Nepal 47.90 8:34.2 5:45:06.2P
Honolulu, Hawaii 54.19 9:21.4 5:45:53.4P
Brisbane, Australia 65.6710:40.3 5:47:12.3P
Seattle, Washington 66.7910:47.5 5:47:19.5P
Moscow, Russia 66.8610:47.9 5:47:19.9P
San Francisco, California 72.1111:20.3 5:47:52.3P
Bergen, Norway 75.9711:42.9 5:48:14.9P
Los Angeles, California 77.0211:48.9 5:48:20.9P
Phoenix, Arizona 81.4412:12.9 5:48:44.9P
Golden, Colorado 81.4912:13.2 5:48:45.2P
Duluth, Minnesota 83.0912:21.6 5:48:53.6P
Albuquerque, New Mexico 83.7812:25.1 5:48:57.1P
Wellington, New Zealand 84.1712:27.1 5:48:59.1P
London, England 85.1612:32.1 5:49:04.1P
Wichita, Kansas 87.2612:42.4 5:49:14.4P
Rome, Italy 88.3012:47.3 5:49:19.3P
St. Louis, Missouri 90.2312:56.4 5:49:28.4P
Ottawa, Canada 90.6812:58.4 5:49:30.4P
Bangor, Maine 93.4113:11.1 5:49:43.1P
Knoxville, Tennessee 94.8313:17.6 5:49:49.6P
Boston, Massachusetts 94.9513:18.1 5:49:50.1P
New York, New York 95.4113:20.2 5:49:52.2P
Philadelphia, Pennsylvania 95.6613:21.3 5:49:53.3P
Brownsville, Texas 95.8113:22.0 5:49:54.0P
Washington, D.C. 95.8713:22.3 5:49:54.3P
Mexico City, Mexico 99.3813:38.0 5:50:10.0Pdiff
Nairobi, Kenya 102.5813:52.1 5:50:24.1Pdiff
Miami, Florida 105.6214:05.7 5:50:37.7Pdiff
San Juan, Puerto Rico 118.3015:01.9 5:51:33.9Pdiff
Lima, Peru 137.0216:25.0 5:52:57.0Pdiff
Palmer Station, Antarctica 146.5719:36.1 5:56:08.1PKPdf

Travel Time Information and Calculator

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