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
Agana, Guam 4.45 1:05.0 2:02:02.0Pn
Tokyo, Japan 19.50 4:21.4 2:05:18.4P
Beijing, China 34.93 6:44.9 2:07:41.9P
Brisbane, Australia 44.84 8:07.0 2:09:04.0P
Honolulu, Hawaii 51.82 9:00.8 2:09:57.8P
Kathmandu, Nepal 57.62 9:42.7 2:10:39.7P
Anchorage, Alaska 62.0510:13.1 2:11:10.1P
Wellington, New Zealand 63.6010:23.5 2:11:20.5P
Seattle, Washington 77.7411:49.4 2:12:46.4P
San Francisco, California 79.9312:01.4 2:12:58.4P
Los Angeles, California 84.1812:23.6 2:13:20.6P
Moscow, Russia 86.4012:34.7 2:13:31.7P
Phoenix, Arizona 89.2512:48.2 2:13:45.2P
Golden, Colorado 92.0013:01.0 2:13:58.0P
Albuquerque, New Mexico 92.8313:04.8 2:14:01.8P
Bergen, Norway 96.7513:22.7 2:14:19.7P
Duluth, Minnesota 96.9313:23.5 2:14:20.5P
Wichita, Kansas 98.3813:29.9 2:14:26.9Pdiff
St. Louis, Missouri 102.6513:48.9 2:14:45.9Pdiff
Brownsville, Texas 103.8613:54.3 2:14:51.3Pdiff
Mexico City, Mexico 105.3114:00.7 2:14:57.7Pdiff
London, England 105.8414:03.1 2:15:00.1Pdiff
Ottawa, Canada 106.4714:05.9 2:15:02.9Pdiff
Knoxville, Tennessee 107.5214:10.5 2:15:07.5Pdiff
Rome, Italy 107.8114:11.8 2:15:08.8Pdiff
Nairobi, Kenya 109.8314:20.7 2:15:17.7Pdiff
Bangor, Maine 110.0914:21.9 2:15:18.9Pdiff
Washington, D.C. 110.4814:23.6 2:15:20.6Pdiff
Philadelphia, Pennsylvania 110.7414:24.8 2:15:21.8Pdiff
New York, New York 110.7914:25.0 2:15:22.0Pdiff
Boston, Massachusetts 111.0014:25.9 2:15:22.9Pdiff
Miami, Florida 117.1214:53.1 2:15:50.1Pdiff
Palmer Station, Antarctica 125.6915:31.2 2:16:28.2Pdiff
San Juan, Puerto Rico 131.6615:57.7 2:16:54.7Pdiff
Lima, Peru 136.9516:21.1 2:17:18.1Pdiff

Travel Time Information and Calculator

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