Link to USGS home page.
Earthquake Hazards Program

Theoretical P-Wave Travel Times

Magnitude 7.9 TONGA
Wednesday, May 03, 2006 at 15:26:40 UTC

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
Wellington, New Zealand 23.16 5:05.715:31:40.7P
Brisbane, Australia 30.83 6:15.215:32:50.2P
Honolulu, Hawaii 44.10 8:07.315:34:42.3P
Agana, Guam 52.31 9:10.715:35:45.7P
Tokyo, Japan 70.4811:13.815:37:48.8P
San Francisco, California 75.3411:42.615:38:17.6P
Los Angeles, California 75.7011:44.615:38:19.6P
Palmer Station, Antarctica 78.9712:02.915:38:37.9P
Phoenix, Arizona 79.6012:06.415:38:41.4P
Seattle, Washington 81.9712:19.115:38:54.1P
Anchorage, Alaska 83.2912:25.915:39:00.9P
Mexico City, Mexico 83.3212:26.115:39:01.1P
Albuquerque, New Mexico 84.3112:31.115:39:06.1P
Brownsville, Texas 87.3312:46.115:39:21.1P
Golden, Colorado 87.5612:47.215:39:22.2P
Beijing, China 87.8412:48.515:39:23.5P
Wichita, Kansas 92.2113:08.915:39:43.9P
Lima, Peru 92.5213:10.315:39:45.3P
St. Louis, Missouri 97.7413:34.015:40:09.0P
Duluth, Minnesota 99.0813:40.015:40:15.0Pdiff
Knoxville, Tennessee 100.7513:47.415:40:22.4Pdiff
Miami, Florida 101.9513:52.715:40:27.7Pdiff
Washington, D.C. 107.7414:18.415:40:53.4Pdiff
Kathmandu, Nepal 107.9814:19.515:40:54.5Pdiff
Philadephia, Pennsylvania 109.3714:25.615:41:00.6Pdiff
Ottawa, Canada 109.8614:27.815:41:02.8Pdiff
New York, New York 110.3714:30.115:41:05.1Pdiff
San Juan, Puerto Rico 112.6114:40.015:41:15.0Pdiff
Boston, Massachusetts 112.7714:40.715:41:15.7Pdiff
Bangor, Maine 114.6814:49.215:41:24.2Pdiff
Moscow, Russia 137.0616:28.615:43:03.6Pdiff
Bergen, Norway 139.6916:40.215:43:15.2Pdiff
Nairobi, Kenya 142.9116:54.515:43:29.5Pdiff
London, England 148.2519:41.215:46:16.2PKPdf
Rome, Italy 157.4819:54.615:46:29.6PKPdf

Travel Time Information and Calculator

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


FirstGov button  Take Pride in America button