Theoretical P-Wave Travel Times

Magnitude 4.2 TONGA
Sunday, January 27, 2013 at 16:29:50 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
(degrees)
Travel Time
(min:secs)
Arrival Time
UTC
Phase
Wellington, New Zealand 26.93 5:41.416:35:31.4P
Brisbane, Australia 33.15 6:36.416:36:26.4P
Honolulu, Hawaii 40.34 7:37.616:37:27.6P
Agana, Guam 51.02 9:02.016:38:52.0P
Tokyo, Japan 68.2511:00.916:40:50.9P
San Francisco, California 71.9111:23.416:41:13.4P
Los Angeles, California 72.4311:26.516:41:16.5P
Phoenix, Arizona 76.4611:50.016:41:40.0P
Seattle, Washington 78.3512:00.616:41:50.6P
Anchorage, Alaska 79.5012:06.916:41:56.9P
Mexico City, Mexico 80.9812:14.816:42:04.8P
Albuquerque, New Mexico 81.1912:16.016:42:06.0P
Palmer Station, Antarctica 82.0312:20.416:42:10.4P
Golden, Colorado 84.3112:32.116:42:22.1P
Brownsville, Texas 84.7212:34.216:42:24.2P
Beijing, China 86.0112:40.616:42:30.6P
Wichita, Kansas 89.1312:55.616:42:45.6P
Lima, Peru 92.4413:11.016:43:01.0P
St. Louis, Missouri 94.6913:21.316:43:11.3P
Duluth, Minnesota 95.7513:26.116:43:16.1P
Knoxville, Tennessee 97.8613:35.616:43:25.6P
Miami, Florida 99.5913:43.316:43:33.3Pdiff
Washington, D.C. 104.8014:06.416:43:56.4Pdiff
Philadelphia, Pennsylvania 106.3914:13.416:44:03.4Pdiff
Ottawa, Canada 106.6614:14.616:44:04.6Pdiff
New York, New York 107.3614:17.816:44:07.8Pdiff
Kathmandu, Nepal 107.3714:17.816:44:07.8Pdiff
Boston, Massachusetts 109.7014:28.216:44:18.2Pdiff
San Juan, Puerto Rico 110.8314:33.216:44:23.2Pdiff
Bangor, Maine 111.5214:36.216:44:26.2Pdiff
Moscow, Russia 134.1416:16.616:46:06.6Pdiff
Bergen, Norway 136.0116:24.916:46:14.9Pdiff
London, England 144.4917:02.616:46:52.6Pdiff
Nairobi, Kenya 145.5619:37.716:49:27.7PKPbc
Rome, Italy 154.0819:52.716:49:42.7PKPdf

Travel Time Information and Calculator

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