Theoretical P-Wave Travel Times

Magnitude 6.8 TONGA

Tuesday, November 24, 2009 at 12:47:16 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 22.82 4:57.612:52:13.6P
Brisbane, Australia 31.31 6:14.212:53:30.2P
Honolulu, Hawaii 44.46 8:04.712:55:20.7P
Agana, Guam 53.31 9:12.612:56:28.6P
Tokyo, Japan 71.4811:14.012:58:30.0P
San Francisco, California 75.3811:37.012:58:53.0P
Los Angeles, California 75.6511:38.512:58:54.5P
Palmer Station, Antarctica 78.0611:52.112:59:08.1P
Phoenix, Arizona 79.4911:59.912:59:15.9P
Seattle, Washington 82.1412:14.012:59:30.0P
Mexico City, Mexico 82.9012:18.012:59:34.0P
Anchorage, Alaska 83.8112:22.612:59:38.6P
Albuquerque, New Mexico 84.1812:24.512:59:40.5P
Brownsville, Texas 87.0012:38.512:59:54.5P
Golden, Colorado 87.4912:40.812:59:56.8P
Beijing, China 88.8512:47.313:00:03.3P
Lima, Peru 91.6413:00.213:00:16.2P
Wichita, Kansas 92.0713:02.213:00:18.2P
St. Louis, Missouri 97.5713:27.213:00:43.2P
Duluth, Minnesota 99.0613:33.813:00:49.8Pdiff
Knoxville, Tennessee 100.5113:40.313:00:56.3Pdiff
Miami, Florida 101.5213:44.813:01:00.8Pdiff
Washington, D.C. 107.5314:11.413:01:27.4Pdiff
Kathmandu, Nepal 108.9414:17.713:01:33.7Pdiff
Philadelphia, Pennsylvania 109.1614:18.713:01:34.7Pdiff
Ottawa, Canada 109.7614:21.313:01:37.3Pdiff
New York, New York 110.1814:23.213:01:39.2Pdiff
San Juan, Puerto Rico 112.0214:31.413:01:47.4Pdiff
Boston, Massachusetts 112.6014:33.913:01:49.9Pdiff
Bangor, Maine 114.5514:42.613:01:58.6Pdiff
Moscow, Russia 137.9916:26.713:03:42.7Pdiff
Bergen, Norway 140.3616:37.113:03:53.1Pdiff
Nairobi, Kenya 143.1916:49.713:04:05.7Pdiff
London, England 148.8219:37.113:06:53.1PKPdf
Rome, Italy 158.3119:51.113:07:07.1PKPdf

Travel Time Information and Calculator

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