Theoretical P-Wave Travel Times

Sunday, July 18, 2010 at 13:04:11 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
Agana, Guam 20.28 4:30.813:08:43.8P
Brisbane, Australia 21.39 4:42.813:08:55.8P
Wellington, New Zealand 41.16 7:38.513:11:51.5P
Tokyo, Japan 42.78 7:51.713:12:04.7P
Beijing, China 55.55 9:29.313:13:42.3P
Honolulu, Hawaii 57.52 9:43.313:13:56.3P
Kathmandu, Nepal 71.2911:13.313:15:26.3P
Anchorage, Alaska 81.3112:10.213:16:23.2P
San Francisco, California 91.3912:59.613:17:12.6P
Seattle, Washington 92.5813:05.113:17:18.1P
Los Angeles, California 94.4113:13.513:17:26.5P
Phoenix, Arizona 99.5113:36.413:17:49.4Pdiff
Palmer Station, Antarctica 102.3413:48.913:18:01.9Pdiff
Albuquerque, New Mexico 104.0013:56.313:18:09.3Pdiff
Golden, Colorado 104.8614:00.113:18:13.1Pdiff
Moscow, Russia 107.7814:13.113:18:26.1Pdiff
Mexico City, Mexico 111.1514:28.013:18:41.0Pdiff
Wichita, Kansas 111.2014:28.313:18:41.3Pdiff
Brownsville, Texas 112.4114:33.613:18:46.6Pdiff
Duluth, Minnesota 112.9914:36.213:18:49.2Pdiff
Nairobi, Kenya 113.3914:38.013:18:51.0Pdiff
St. Louis, Missouri 116.4914:51.713:19:04.7Pdiff
Bergen, Norway 119.8315:06.613:19:19.6Pdiff
Knoxville, Tennessee 121.1115:12.313:19:25.3Pdiff
Ottawa, Canada 124.0315:25.213:19:38.2Pdiff
Washington, D.C. 126.1515:34.613:19:47.6Pdiff
Philadelphia, Pennsylvania 127.0015:38.413:19:51.4Pdiff
New York, New York 127.4215:40.313:19:53.3Pdiff
Miami, Florida 127.8615:42.213:19:55.2Pdiff
Bangor, Maine 128.4915:45.013:19:58.0Pdiff
Boston, Massachusetts 128.4915:45.013:19:58.0Pdiff
Rome, Italy 128.5015:45.013:19:58.0Pdiff
London, England 128.6615:45.813:19:58.8Pdiff
Lima, Peru 129.3615:48.813:20:01.8Pdiff
San Juan, Puerto Rico 142.2316:46.013:20:59.0Pdiff

Travel Time Information and Calculator

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