Theoretical P-Wave Travel Times

Magnitude 6.4 TONGA
Saturday, May 11, 2013 at 20:57:50 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 24.84 5:03.420:51:59.4P
Brisbane, Australia 30.87 5:57.020:52:53.0P
Honolulu, Hawaii 42.51 7:35.020:54:31.0P
Agana, Guam 50.44 8:36.620:55:32.6P
Tokyo, Japan 68.3510:39.220:57:35.2P
San Francisco, California 74.2811:14.720:58:10.7P
Los Angeles, California 74.8211:17.820:58:13.8P
Phoenix, Arizona 78.8511:40.320:58:36.3P
Seattle, Washington 80.6611:49.920:58:45.9P
Palmer Station, Antarctica 81.1911:52.820:58:48.8P
Anchorage, Alaska 81.4211:54.020:58:50.0P
Mexico City, Mexico 83.2512:03.420:58:59.4P
Albuquerque, New Mexico 83.5912:05.120:59:01.1P
Beijing, China 85.8212:16.320:59:12.3P
Golden, Colorado 86.7012:20.520:59:16.5P
Brownsville, Texas 87.0512:22.220:59:18.2P
Wichita, Kansas 91.5212:43.120:59:39.1P
Lima, Peru 93.8012:53.620:59:49.6P
St. Louis, Missouri 97.0813:08.421:00:04.4P
Duluth, Minnesota 98.1313:13.021:00:09.0Pdiff
Knoxville, Tennessee 100.2413:22.421:00:18.4Pdiff
Miami, Florida 101.8613:29.621:00:25.6Pdiff
Kathmandu, Nepal 106.4013:49.721:00:45.8Pdiff
Washington, D.C. 107.1813:53.221:00:49.2Pdiff
Philadelphia, Pennsylvania 108.7714:00.321:00:56.3Pdiff
Ottawa, Canada 109.0514:01.521:00:57.5Pdiff
New York, New York 109.7514:04.621:01:00.6Pdiff
Boston, Massachusetts 112.0914:15.021:01:11.0Pdiff
San Juan, Puerto Rico 112.9414:18.821:01:14.8Pdiff
Bangor, Maine 113.9114:23.121:01:19.1Pdiff
Moscow, Russia 134.8315:56.021:02:52.0Pdiff
Bergen, Norway 137.6116:08.321:03:04.3Pdiff
Nairobi, Kenya 143.2416:33.321:03:29.3Pdiff
London, England 146.2719:15.221:06:11.2PKPdf
Rome, Italy 155.2719:29.521:06:25.5PKPdf

Travel Time Information and Calculator

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