Theoretical P-Wave Travel Times

Magnitude 5.7 TONGA
Thursday, February 21, 2013 at 00:26:59 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 25.85 5:28.222:34:28.2P
Brisbane, Australia 32.52 6:27.522:35:27.5P
Honolulu, Hawaii 41.41 7:42.922:36:42.9P
Agana, Guam 51.45 9:01.622:38:01.6P
Tokyo, Japan 68.9511:01.622:40:01.6P
San Francisco, California 72.8611:25.422:40:25.4P
Los Angeles, California 73.3311:28.122:40:28.1P
Phoenix, Arizona 77.3211:51.022:40:51.0P
Seattle, Washington 79.3712:02.422:41:02.4P
Anchorage, Alaska 80.6012:09.022:41:09.0P
Palmer Station, Antarctica 81.1012:11.722:41:11.7P
Mexico City, Mexico 81.5912:14.322:41:14.3P
Albuquerque, New Mexico 82.0412:16.722:41:16.7P
Golden, Colorado 85.2012:32.822:41:32.8P
Brownsville, Texas 85.4112:33.922:41:33.9P
Beijing, China 86.6012:39.722:41:39.7P
Wichita, Kansas 89.9712:55.722:41:55.7P
Lima, Peru 92.3913:06.922:42:06.9P
St. Louis, Missouri 95.5213:21.222:42:21.2P
Duluth, Minnesota 96.6713:26.422:42:26.4P
Knoxville, Tennessee 98.6413:35.222:42:35.2Pdiff
Miami, Florida 100.2113:42.222:42:42.2Pdiff
Washington, D.C. 105.6014:06.122:43:06.1Pdiff
Philadelphia, Pennsylvania 107.2014:13.222:43:13.2Pdiff
Ottawa, Canada 107.5414:14.722:43:14.7Pdiff
Kathmandu, Nepal 107.6314:15.122:43:15.1Pdiff
New York, New York 108.1814:17.622:43:17.6Pdiff
Boston, Massachusetts 110.5414:28.022:43:28.0Pdiff
San Juan, Puerto Rico 111.2814:31.322:43:31.3Pdiff
Bangor, Maine 112.3914:36.222:43:36.2Pdiff
Moscow, Russia 135.0316:16.822:45:16.8Pdiff
Bergen, Norway 137.0916:25.922:45:25.9Pdiff
Nairobi, Kenya 144.8717:00.422:46:00.4Pdiff
London, England 145.5819:33.922:48:33.9PKPbc
Rome, Italy 155.1019:50.222:48:50.2PKPdf

Travel Time Information and Calculator

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