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
Lima, Peru 20.79 4:37.920:59:20.9P
Palmer Station, Antarctica 35.71 6:54.721:01:37.7P
San Juan, Puerto Rico 50.84 8:56.721:03:39.7P
Mexico City, Mexico 57.86 9:47.821:04:30.8P
Miami, Florida 58.39 9:51.521:04:34.5P
Brownsville, Texas 62.9910:22.921:05:05.9P
Knoxville, Tennessee 69.1411:02.421:05:45.4P
Washington, D.C. 71.0811:14.321:05:57.3P
Philadelphia, Pennsylvania 72.0311:20.021:06:03.0P
New York, New York 72.7511:24.321:06:07.3P
St. Louis, Missouri 72.7711:24.421:06:07.4P
Wichita, Kansas 73.7911:30.421:06:13.4P
Boston, Massachusetts 74.3411:33.621:06:16.6P
Albuquerque, New Mexico 74.7311:35.921:06:18.9P
Phoenix, Arizona 75.7611:41.921:06:24.9P
Bangor, Maine 76.8511:48.021:06:31.0P
Ottawa, Canada 77.5111:51.721:06:34.7P
Golden, Colorado 78.2311:55.721:06:38.7P
Los Angeles, California 79.3212:01.721:06:44.7P
Duluth, Minnesota 80.9112:10.321:06:53.3P
San Francisco, California 84.3412:28.121:07:11.1P
Wellington, New Zealand 84.5712:29.221:07:12.2P
Seattle, Washington 91.8513:04.021:07:47.0P
Honolulu, Hawaii 98.0913:32.421:08:15.4P
London, England 104.3314:00.121:08:43.1Pdiff
Nairobi, Kenya 104.8114:02.221:08:45.2Pdiff
Rome, Italy 106.8214:11.121:08:54.1Pdiff
Brisbane, Australia 106.8914:11.421:08:54.4Pdiff
Bergen, Norway 111.5614:32.121:09:15.1Pdiff
Anchorage, Alaska 112.5414:36.521:09:19.5Pdiff
Moscow, Russia 126.7015:39.421:10:22.4Pdiff
Agana, Guam 141.8416:46.621:11:29.6Pdiff
Tokyo, Japan 153.8719:48.021:14:31.0PKPdf
Kathmandu, Nepal 159.4919:55.621:14:38.6PKPdf
Beijing, China 170.0720:05.321:14:48.3PKPdf

Travel Time Information and Calculator

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