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Earthquake Hazards Program


Wednesday, February 11, 2009 at 17:34:50 UTC

Theoretical P-Wave Travel Times

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 20.47 4:34.517:39:26.5P
Tokyo, Japan 33.96 6:39.917:41:31.9P
Beijing, China 37.00 7:06.017:41:58.0P
Brisbane, Australia 40.38 7:34.317:42:26.3P
Kathmandu, Nepal 45.75 8:17.817:43:09.8P
Wellington, New Zealand 62.9010:22.617:45:14.6P
Honolulu, Hawaii 75.3411:39.817:46:31.8P
Anchorage, Alaska 83.5812:24.617:47:16.6P
Moscow, Russia 86.1012:37.217:47:29.2P
Nairobi, Kenya 89.6612:54.217:47:46.2P
Seattle, Washington 101.2213:46.617:48:38.6Pdiff
Bergen, Norway 101.4013:47.417:48:39.4Pdiff
San Francisco, California 104.1613:59.717:48:51.7Pdiff
Rome, Italy 104.9214:03.017:48:55.0Pdiff
Los Angeles, California 108.5014:18.917:49:10.9Pdiff
London, England 108.6214:19.517:49:11.5Pdiff
Phoenix, Arizona 113.5414:41.317:49:33.3Pdiff
Golden, Colorado 115.7914:51.317:49:43.3Pdiff
Palmer Station, Antarctica 115.8114:51.317:49:43.3Pdiff
Albuquerque, New Mexico 116.9814:56.517:49:48.5Pdiff
Duluth, Minnesota 119.1915:06.417:49:58.4Pdiff
Wichita, Kansas 122.0315:19.017:50:11.0Pdiff
St. Louis, Missouri 125.8015:35.717:50:27.7Pdiff
Ottawa, Canada 127.1215:41.617:50:33.6Pdiff
Brownsville, Texas 128.2015:46.317:50:38.3Pdiff
Mexico City, Mexico 129.5715:52.417:50:44.4Pdiff
Bangor, Maine 129.6815:52.917:50:44.9Pdiff
Knoxville, Tennessee 130.5915:57.017:50:48.9Pdiff
Boston, Massachusetts 131.3516:00.417:50:52.4Pdiff
New York, New York 131.8616:02.617:50:54.6Pdiff
Philadephia, Pennsylvania 132.1016:03.717:50:55.7Pdiff
Washington, D.C. 132.2616:04.417:50:56.4Pdiff
Miami, Florida 140.8616:42.517:51:34.5Pdiff
San Juan, Puerto Rico 154.5819:49.417:54:41.4PKPdf
Lima, Peru 155.3919:50.617:54:42.6PKPdf

Travel Time Information and Calculator

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

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