Theoretical P-Wave Travel Times


Theoretical P-wave Travel Times

Theoretical P-wave Travel Times

These maps show 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
Wichita, Kansas 2.29 0:38.416:35:13.4Pn
St. Louis, Missouri 6.55 1:36.916:36:11.9Pn
Golden, Colorado 7.52 1:50.316:36:25.3Pn
Albuquerque, New Mexico 7.56 1:50.916:36:25.9Pn
Brownsville, Texas 9.54 2:18.016:36:53.0Pn
Knoxville, Tennessee 9.96 2:23.816:36:58.8Pn
Duluth, Minnesota 11.94 2:50.816:37:25.8Pn
Phoenix, Arizona 12.28 2:55.516:37:30.5Pn
Mexico City, Mexico 16.07 3:46.616:38:21.6Pn
Washington, D.C. 16.58 3:53.216:38:28.2Pn
Los Angeles, California 17.19 4:00.816:38:35.8Pn
Miami, Florida 17.67 4:06.916:38:41.9Pn
Philadelphia, Pennsylvania 18.14 4:12.716:38:47.7Pn
New York, New York 19.12 4:23.816:38:58.8P
Ottawa, Canada 19.21 4:24.816:38:59.8P
San Francisco, California 20.20 4:35.616:39:10.6P
Boston, Massachusetts 21.55 4:50.116:39:25.1P
Seattle, Washington 22.22 4:57.316:39:32.3P
Bangor, Maine 23.69 5:12.716:39:47.7P
San Juan, Puerto Rico 32.41 6:30.816:41:05.8P
Anchorage, Alaska 41.76 7:50.016:42:25.0P
Lima, Peru 51.08 9:03.216:43:38.2P
Honolulu, Hawaii 54.25 9:26.716:44:01.7P
Bergen, Norway 65.6710:45.316:45:20.3P
London, England 67.2610:55.516:45:30.5P
Rome, Italy 79.8312:09.516:46:44.5P
Moscow, Russia 81.4112:17.916:46:52.9P
Tokyo, Japan 91.4513:07.216:47:42.2P
Beijing, China 98.7713:40.516:48:15.4Pdiff
Agana, Guam 103.7314:02.516:48:37.5Pdiff
Palmer Station, Antarctica 105.9514:12.316:48:47.3Pdiff
Wellington, New Zealand 110.8714:34.216:49:09.2Pdiff
Kathmandu, Nepal 117.1315:02.016:49:37.0Pdiff
Brisbane, Australia 120.5615:17.216:49:52.2Pdiff
Nairobi, Kenya 125.6015:39.616:50:14.6Pdiff

Travel Time Information and Calculator

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