Theoretical P-Wave Travel Times

Magnitude 6.7 TONGA
Saturday, April 28, 2012 at 10:08:07 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
(degrees)
Travel Time
(min:secs)
Arrival Time
UTC
Phase
Wellington, New Zealand 24.29 5:05.210:13:12.2P
Brisbane, Australia 30.90 6:04.210:14:11.2P
Honolulu, Hawaii 43.01 7:46.410:15:53.4P
Agana, Guam 51.12 8:49.310:16:56.3P
Tokyo, Japan 69.1110:52.010:18:59.0P
San Francisco, California 74.5911:24.810:19:31.8P
Los Angeles, California 75.0711:27.610:19:34.6P
Phoenix, Arizona 79.0511:49.810:19:56.8P
Palmer Station, Antarctica 80.4311:57.210:20:04.2P
Seattle, Washington 81.0612:00.610:20:07.6P
Anchorage, Alaska 82.0312:05.710:20:12.7P
Mexico City, Mexico 83.2112:11.810:20:18.8P
Albuquerque, New Mexico 83.7812:14.710:20:21.7P
Beijing, China 86.5412:28.410:20:35.4P
Golden, Colorado 86.9412:30.410:20:37.4P
Brownsville, Texas 87.0912:31.110:20:38.1P
Wichita, Kansas 91.7012:52.610:20:59.6P
Lima, Peru 93.3113:00.010:21:07.0P
St. Louis, Missouri 97.2513:17.910:21:24.9P
Duluth, Minnesota 98.4113:23.010:21:30.0Pdiff
Knoxville, Tennessee 100.3613:31.710:21:38.7Pdiff
Miami, Florida 101.8313:38.210:21:45.2Pdiff
Kathmandu, Nepal 106.9914:01.110:22:08.1Pdiff
Washington, D.C. 107.3214:02.610:22:09.6Pdiff
Philadelphia, Pennsylvania 108.9214:09.710:22:16.7Pdiff
Ottawa, Canada 109.2714:11.310:22:18.3Pdiff
New York, New York 109.9114:14.110:22:21.1Pdiff
Boston, Massachusetts 112.2714:24.610:22:31.6Pdiff
San Juan, Puerto Rico 112.7714:26.810:22:33.8Pdiff
Bangor, Maine 114.1214:32.810:22:39.8Pdiff
Moscow, Russia 135.6116:08.110:24:15.1Pdiff
Bergen, Norway 138.3116:20.110:24:27.1Pdiff
Nairobi, Kenya 143.1916:41.810:24:48.8Pdiff
London, England 146.9319:25.610:27:32.6PKPdf
Rome, Italy 156.0319:39.810:27:46.8PKPdf

Travel Time Information and Calculator

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