Theoretical P-Wave Travel Times


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
Mexico City, Mexico 12.71 2:57.618:59:07.6Pn
Miami, Florida 15.10 3:29.018:59:39.0Pn
Brownsville, Texas 16.01 3:40.518:59:50.5Pn
San Juan, Puerto Rico 21.90 4:46.819:00:56.8P
Knoxville, Tennessee 23.46 5:02.619:01:12.6P
St. Louis, Missouri 26.10 5:26.619:01:36.6P
Wichita, Kansas 26.47 5:29.919:01:39.9P
Lima, Peru 26.78 5:32.719:01:42.7P
Washington, D.C. 28.01 5:43.719:01:53.7P
Albuquerque, New Mexico 28.07 5:44.219:01:54.2P
Philadelphia, Pennsylvania 29.58 5:57.619:02:07.6P
Phoenix, Arizona 30.25 6:03.519:02:13.5P
New York, New York 30.66 6:07.119:02:17.1P
Golden, Colorado 31.06 6:10.719:02:20.7P
Boston, Massachusetts 33.15 6:28.919:02:38.9P
Duluth, Minnesota 34.28 6:38.819:02:48.8P
Ottawa, Canada 34.41 6:39.919:02:49.9P
Los Angeles, California 34.84 6:43.519:02:53.5P
Bangor, Maine 36.13 6:54.619:03:04.6P
San Francisco, California 39.64 7:24.119:03:34.1P
Seattle, Washington 45.32 8:10.219:04:20.2P
Anchorage, Alaska 65.7010:36.519:06:46.5P
Honolulu, Hawaii 66.9110:44.119:06:54.1P
London, England 78.9911:55.619:08:05.6P
Bergen, Norway 80.8712:05.719:08:15.7P
Palmer Station, Antarctica 81.9412:11.319:08:21.3P
Rome, Italy 89.4212:48.319:08:58.3P
Moscow, Russia 98.3213:28.919:09:38.9Pdiff
Wellington, New Zealand 103.5213:52.019:10:02.0Pdiff
Tokyo, Japan 114.1614:39.219:10:49.2Pdiff
Brisbane, Australia 121.2715:10.819:11:20.8Pdiff
Agana, Guam 121.6515:12.519:11:22.5Pdiff
Beijing, China 123.0915:18.819:11:28.8Pdiff
Nairobi, Kenya 124.2515:24.019:11:34.0Pdiff
Kathmandu, Nepal 139.5016:31.719:12:41.7Pdiff

Travel Time Information and Calculator

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