Theoretical P-Wave Travel Times

Friday, August 31, 2012 at 12:47:34 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
Agana, Guam 17.86 4:05.612:51:39.6Pn
Tokyo, Japan 27.42 5:42.412:53:16.4P
Beijing, China 30.36 6:08.412:53:42.4P
Kathmandu, Nepal 42.26 7:49.812:55:23.8P
Brisbane, Australia 45.85 8:18.612:55:52.6P
Wellington, New Zealand 68.1710:56.712:58:30.7P
Honolulu, Hawaii 72.7211:24.512:58:58.5P
Anchorage, Alaska 77.4211:51.612:59:25.6P
Moscow, Russia 80.5712:08.812:59:42.8P
Nairobi, Kenya 90.0912:56.213:00:30.2P
Bergen, Norway 95.2713:20.113:00:54.1P
Seattle, Washington 95.7213:22.113:00:56.1P
San Francisco, California 99.4313:38.713:01:12.7Pdiff
Rome, Italy 100.1613:41.913:01:15.9Pdiff
London, England 102.8613:53.913:01:27.9Pdiff
Los Angeles, California 103.9913:58.913:01:32.9Pdiff
Phoenix, Arizona 108.8914:20.713:01:54.7Pdiff
Golden, Colorado 110.4114:27.413:02:01.4Pdiff
Albuquerque, New Mexico 112.0014:34.513:02:08.5Pdiff
Duluth, Minnesota 113.0014:38.913:02:12.9Pdiff
Wichita, Kansas 116.5014:54.413:02:28.4Pdiff
St. Louis, Missouri 119.9115:09.613:02:43.6Pdiff
Ottawa, Canada 120.4915:12.113:02:46.1Pdiff
Palmer Station, Antarctica 122.6815:21.913:02:55.9Pdiff
Bangor, Maine 122.9015:22.813:02:56.8Pdiff
Brownsville, Texas 123.6115:26.013:03:00.0Pdiff
Knoxville, Tennessee 124.6215:30.513:03:04.5Pdiff
Boston, Massachusetts 124.6515:30.613:03:04.6Pdiff
New York, New York 125.2715:33.413:03:07.4Pdiff
Philadelphia, Pennsylvania 125.5715:34.713:03:08.7Pdiff
Mexico City, Mexico 125.7515:35.513:03:09.5Pdiff
Washington, D.C. 125.8215:35.813:03:09.8Pdiff
Miami, Florida 135.2016:17.513:03:51.5Pdiff
San Juan, Puerto Rico 148.2519:39.513:07:13.5PKPdf
Lima, Peru 156.7119:52.413:07:26.4PKPdf

Travel Time Information and Calculator

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