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 14.06 3:17.722:59:47.7Pn
Palmer Station, Antarctica 43.11 7:58.123:04:28.1P
San Juan, Puerto Rico 43.31 7:59.823:04:29.8P
Miami, Florida 51.16 9:01.023:05:31.0P
Mexico City, Mexico 52.03 9:07.423:05:37.4P
Brownsville, Texas 56.74 9:41.723:06:11.7P
Knoxville, Tennessee 62.0210:18.223:06:48.2P
Washington, D.C. 63.7010:29.423:06:59.4P
Philadelphia, Pennsylvania 64.6110:35.423:07:05.4P
New York, New York 65.3110:40.023:07:10.0P
St. Louis, Missouri 65.8010:43.223:07:13.2P
Boston, Massachusetts 66.8610:49.923:07:19.9P
Wichita, Kansas 67.1510:51.823:07:21.8P
Albuquerque, New Mexico 68.6711:01.323:07:31.3P
Bangor, Maine 69.3411:05.523:07:35.5P
Ottawa, Canada 70.0911:10.123:07:40.1P
Phoenix, Arizona 70.1011:10.223:07:40.2P
Golden, Colorado 71.9011:21.123:07:51.1P
Duluth, Minnesota 73.8811:32.923:08:02.9P
Los Angeles, California 73.9911:33.523:08:03.5P
San Francisco, California 79.0112:02.023:08:32.0P
Seattle, Washington 85.9212:37.923:09:07.9P
Wellington, New Zealand 90.5512:60.023:09:30.0P
Honolulu, Hawaii 96.2713:26.223:09:56.2P
London, England 97.8713:33.323:10:03.3P
Rome, Italy 101.3913:49.023:10:19.0Pdiff
Bergen, Norway 104.7014:03.723:10:33.7Pdiff
Nairobi, Kenya 105.3014:06.323:10:36.3Pdiff
Anchorage, Alaska 106.4814:11.623:10:41.6Pdiff
Brisbane, Australia 113.0614:40.823:11:10.8Pdiff
Moscow, Russia 120.4515:13.623:11:43.6Pdiff
Agana, Guam 144.7817:01.623:13:31.6Pdiff
Tokyo, Japan 151.7119:46.823:16:16.8PKPdf
Kathmandu, Nepal 158.2919:56.123:16:26.1PKPdf
Beijing, China 163.8520:02.423:16:32.4PKPdf

Travel Time Information and Calculator

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