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
London, England 18.48 4:15.420:22:55.4P
Bergen, Norway 23.60 5:10.620:23:50.6P
Rome, Italy 28.74 5:56.920:24:36.9P
Bangor, Maine 28.76 5:57.120:24:37.1P
Boston, Massachusetts 31.20 6:18.720:24:58.7P
Ottawa, Canada 33.21 6:36.320:25:16.3P
New York, New York 33.87 6:42.020:25:22.0P
Philadelphia, Pennsylvania 35.00 6:51.820:25:31.8P
Washington, D.C. 36.77 7:07.020:25:47.0P
Moscow, Russia 40.44 7:37.820:26:17.8P
San Juan, Puerto Rico 42.36 7:53.520:26:33.5P
Duluth, Minnesota 43.34 8:01.520:26:41.5P
Knoxville, Tennessee 43.84 8:05.520:26:45.5P
St. Louis, Missouri 45.86 8:21.620:27:01.6P
Miami, Florida 46.45 8:26.220:27:06.2P
Wichita, Kansas 51.06 9:01.720:27:41.7P
Golden, Colorado 55.06 9:31.220:28:11.1P
Brownsville, Texas 58.29 9:54.220:28:34.2P
Albuquerque, New Mexico 58.72 9:57.220:28:37.2P
Seattle, Washington 60.4110:08.820:28:48.8P
Anchorage, Alaska 63.0710:26.820:29:06.8P
Phoenix, Arizona 63.2610:28.020:29:08.0P
Mexico City, Mexico 63.7310:31.220:29:11.2P
Los Angeles, California 66.7810:51.020:29:31.0P
San Francisco, California 66.8710:51.520:29:31.5P
Lima, Peru 73.3511:31.320:30:11.3P
Nairobi, Kenya 73.4711:32.020:30:12.0P
Kathmandu, Nepal 84.3712:31.820:31:11.8P
Beijing, China 88.0912:50.020:31:30.0P
Tokyo, Japan 97.3913:32.820:32:12.8P
Honolulu, Hawaii 99.0113:40.020:32:20.0Pdiff
Palmer Station, Antarctica 117.2515:01.020:33:41.0Pdiff
Agana, Guam 119.8915:12.720:33:52.7Pdiff
Brisbane, Australia 161.0220:01.120:38:41.1PKPdf
Wellington, New Zealand 163.2220:03.420:38:43.4PKPdf

Travel Time Information and Calculator

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