Theoretical P-Wave Travel Times

Magnitude 4.6 TONGA
Sunday, January 27, 2013 at 10:04:19 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 27.79 5:49.110:10:08.1P
Brisbane, Australia 33.04 6:35.510:10:54.5P
Honolulu, Hawaii 39.55 7:31.010:11:50.0P
Agana, Guam 49.81 8:52.910:13:11.9P
Tokyo, Japan 66.9210:52.510:15:11.5P
San Francisco, California 71.4911:20.910:15:39.9P
Los Angeles, California 72.1211:24.710:15:43.7P
Phoenix, Arizona 76.2311:48.710:16:07.6P
Seattle, Washington 77.7511:57.210:16:16.2P
Anchorage, Alaska 78.5112:01.410:16:20.4P
Albuquerque, New Mexico 80.9812:14.810:16:33.8P
Mexico City, Mexico 81.1712:15.810:16:34.8P
Palmer Station, Antarctica 83.3612:27.310:16:46.3P
Golden, Colorado 84.0112:30.610:16:49.6P
Beijing, China 84.7112:34.210:16:53.2P
Brownsville, Texas 84.7812:34.510:16:53.5P
Wichita, Kansas 88.9312:54.710:17:13.7P
Lima, Peru 93.3813:15.310:17:34.3P
St. Louis, Missouri 94.5113:20.510:17:39.5P
Duluth, Minnesota 95.3813:24.410:17:43.4P
Knoxville, Tennessee 97.7713:35.210:17:54.2P
Miami, Florida 99.7513:44.010:18:03.0Pdiff
Washington, D.C. 104.6614:05.810:18:24.8Pdiff
Philadelphia, Pennsylvania 106.2314:12.710:18:31.8Pdiff
Kathmandu, Nepal 106.2614:12.910:18:31.9Pdiff
Ottawa, Canada 106.3714:13.410:18:32.4Pdiff
New York, New York 107.1914:17.010:18:36.0Pdiff
Boston, Massachusetts 109.5014:27.210:18:46.2Pdiff
San Juan, Puerto Rico 111.2314:34.910:18:53.9Pdiff
Bangor, Maine 111.2514:35.010:18:54.0Pdiff
Moscow, Russia 132.8016:10.710:20:29.7Pdiff
Bergen, Norway 134.8616:19.810:20:38.8Pdiff
London, England 143.4316:57.910:21:16.9Pdiff
Nairobi, Kenya 145.4619:37.410:23:56.4PKPbc
Rome, Italy 152.8219:50.810:24:09.8PKPdf

Travel Time Information and Calculator

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