Theoretical P-Wave Travel Times


Tuesday, November 17, 2009 at 15:30:45 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
Seattle, Washington 7.32 1:46.915:32:32.9Pn
Anchorage, Alaska 13.59 3:12.815:33:58.8Pn
San Francisco, California 15.67 3:40.815:34:26.8Pn
Los Angeles, California 20.40 4:37.015:35:23.0P
Golden, Colorado 21.93 4:53.515:35:39.5P
Phoenix, Arizona 23.33 5:08.415:35:54.4P
Albuquerque, New Mexico 24.58 5:20.115:36:06.1P
Duluth, Minnesota 25.91 5:32.215:36:18.2P
Wichita, Kansas 27.81 5:49.315:36:35.3P
St. Louis, Missouri 31.49 6:21.915:37:07.9P
Knoxville, Tennessee 36.34 7:03.915:37:49.9P
Ottawa, Canada 36.59 7:06.115:37:52.1P
Brownsville, Texas 36.62 7:06.315:37:52.3P
Honolulu, Hawaii 36.86 7:08.315:37:54.3P
Washington, D.C. 39.48 7:30.415:38:16.4P
Philadelphia, Pennsylvania 39.99 7:34.715:38:20.7P
New York, New York 40.25 7:36.815:38:22.8P
Bangor, Maine 41.08 7:43.715:38:29.7P
Boston, Massachusetts 41.08 7:43.715:38:29.7P
Mexico City, Mexico 41.23 7:44.915:38:30.9P
Miami, Florida 46.54 8:27.615:39:13.6P
San Juan, Puerto Rico 60.5310:10.315:40:56.3P
Tokyo, Japan 62.1110:21.015:41:07.1P
Bergen, Norway 62.6710:24.715:41:10.7P
London, England 68.9511:05.315:41:51.3P
Beijing, China 71.0611:18.315:42:04.3P
Moscow, Russia 72.1811:25.015:42:11.0P
Agana, Guam 75.6711:45.515:42:31.5P
Lima, Peru 79.2212:05.315:42:51.3P
Rome, Italy 81.3512:16.815:43:02.8P
Kathmandu, Nepal 94.2613:19.315:44:05.3P
Brisbane, Australia 102.9413:58.115:44:44.1Pdiff
Wellington, New Zealand 103.9914:02.815:44:48.8Pdiff
Nairobi, Kenya 128.4515:51.415:46:37.4Pdiff
Palmer Station, Antarctica 129.6115:56.515:46:42.5Pdiff

Travel Time Information and Calculator

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