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
Kathmandu, Nepal 15.46 3:36.916:00:16.9Pn
Moscow, Russia 38.60 7:21.616:04:01.6P
Nairobi, Kenya 39.95 7:32.816:04:12.8P
Beijing, China 42.91 7:57.116:04:37.1P
Rome, Italy 49.18 8:46.516:05:26.5P
Bergen, Norway 55.89 9:36.316:06:16.3P
London, England 58.15 9:52.316:06:32.3P
Tokyo, Japan 61.5010:15.416:06:55.4P
Agana, Guam 72.1811:23.516:08:03.5P
Anchorage, Alaska 89.2312:54.516:09:34.5P
Brisbane, Australia 96.3613:27.216:10:07.2P
Bangor, Maine 100.8713:47.316:10:27.3Pdiff
Ottawa, Canada 103.2813:58.016:10:38.0Pdiff
Boston, Massachusetts 103.8514:00.616:10:40.6Pdiff
New York, New York 106.4614:12.116:10:52.1Pdiff
Duluth, Minnesota 107.0814:14.916:10:54.9Pdiff
Seattle, Washington 107.5014:16.716:10:56.7Pdiff
Philadelphia, Pennsylvania 107.5914:17.116:10:57.1Pdiff
Washington, D.C. 109.2714:24.616:11:04.6Pdiff
St. Louis, Missouri 114.2014:46.516:11:26.5Pdiff
Knoxville, Tennessee 115.0414:50.216:11:30.2Pdiff
Golden, Colorado 115.9314:54.216:11:34.2Pdiff
Honolulu, Hawaii 116.0114:54.516:11:34.5Pdiff
Wichita, Kansas 116.7714:57.916:11:37.9Pdiff
San Francisco, California 117.3315:00.416:11:40.4Pdiff
Wellington, New Zealand 117.5415:01.316:11:41.3Pdiff
San Juan, Puerto Rico 118.6015:06.016:11:46.0Pdiff
Albuquerque, New Mexico 120.6815:15.316:11:55.3Pdiff
Los Angeles, California 121.5415:19.116:11:59.1Pdiff
Miami, Florida 121.6715:19.716:11:59.7Pdiff
Phoenix, Arizona 122.4915:23.316:12:03.3Pdiff
Palmer Station, Antarctica 127.9115:47.316:12:27.3Pdiff
Brownsville, Texas 128.2115:48.716:12:28.7Pdiff
Mexico City, Mexico 134.8416:18.116:12:58.1Pdiff
Lima, Peru 145.1919:34.916:16:14.9PKPbc

Travel Time Information and Calculator

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