Theoretical P-Wave Travel Times

Tuesday, December 21, 2010 at 17:19:40 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 9.41 2:15.017:21:56.0Pn
Agana, Guam 13.37 3:09.117:22:50.1Pn
Beijing, China 26.14 5:33.517:25:14.5P
Kathmandu, Nepal 51.50 9:04.817:28:45.8P
Honolulu, Hawaii 53.24 9:17.717:28:58.7P
Brisbane, Australia 54.78 9:29.017:29:10.0P
Anchorage, Alaska 55.48 9:34.117:29:15.1P
Seattle, Washington 73.1111:29.817:31:10.8P
Wellington, New Zealand 73.6511:33.017:31:14.0P
Moscow, Russia 76.6311:50.217:31:31.2P
San Francisco, California 76.9011:51.617:31:32.6P
Los Angeles, California 81.5412:17.017:31:58.0P
Phoenix, Arizona 86.3612:41.517:32:22.5P
Bergen, Norway 86.6612:43.017:32:24.0P
Golden, Colorado 87.7812:48.417:32:29.4P
Albuquerque, New Mexico 89.3712:55.917:32:36.9P
Duluth, Minnesota 91.0313:03.717:32:44.7P
Wichita, Kansas 93.9213:17.017:32:57.9P
London, England 95.7613:25.317:33:06.3P
St. Louis, Missouri 97.5613:33.417:33:14.4P
Rome, Italy 98.1013:35.817:33:16.8P
Ottawa, Canada 99.6013:42.517:33:23.5Pdiff
Brownsville, Texas 101.0613:49.017:33:30.0Pdiff
Knoxville, Tennessee 102.3413:54.717:33:35.7Pdiff
Bangor, Maine 102.7513:56.517:33:37.5Pdiff
Mexico City, Mexico 103.6214:00.317:33:41.3Pdiff
Boston, Massachusetts 104.0214:02.117:33:43.1Pdiff
New York, New York 104.1814:02.817:33:43.8Pdiff
Washington, D.C. 104.2914:03.317:33:44.3Pdiff
Philadelphia, Pennsylvania 104.3014:03.317:33:44.3Pdiff
Nairobi, Kenya 105.6514:09.317:33:50.3Pdiff
Miami, Florida 112.7014:40.617:34:21.6Pdiff
San Juan, Puerto Rico 126.4115:41.517:35:22.5Pdiff
Palmer Station, Antarctica 135.7616:23.017:36:04.0Pdiff
Lima, Peru 139.0316:37.517:36:18.5Pdiff

Travel Time Information and Calculator

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