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Earthquake Hazards Program


Thursday, October 08, 2009 at 02:12:39 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
Brisbane, Australia 20.02 4:29.7 2:17:08.7P
Wellington, New Zealand 30.48 6:09.4 2:18:48.4P
Agana, Guam 32.75 6:29.4 2:19:08.4P
Honolulu, Hawaii 48.22 8:37.0 2:21:16.0P
Tokyo, Japan 53.26 9:15.0 2:21:54.0P
Beijing, China 68.9611:01.6 2:23:40.6P
Anchorage, Alaska 80.4612:08.2 2:24:47.2P
San Francisco, California 82.8312:20.7 2:24:59.7P
Los Angeles, California 84.8212:30.9 2:25:09.8P
Seattle, Washington 86.5012:39.2 2:25:18.2P
Kathmandu, Nepal 87.3712:43.4 2:25:22.4P
Phoenix, Arizona 89.6012:53.9 2:25:32.9P
Palmer Station, Antarctica 93.0513:09.9 2:25:48.9P
Albuquerque, New Mexico 94.3513:15.9 2:25:54.9P
Golden, Colorado 96.3213:24.8 2:26:03.8P
Mexico City, Mexico 98.1613:33.0 2:26:12.0P
Brownsville, Texas 100.6513:44.1 2:26:23.1Pdiff
Wichita, Kansas 102.1613:50.8 2:26:29.8Pdiff
Duluth, Minnesota 106.3914:09.5 2:26:48.5Pdiff
St. Louis, Missouri 107.7814:15.7 2:26:54.7Pdiff
Knoxville, Tennessee 111.8414:33.7 2:27:12.7Pdiff
Lima, Peru 112.9814:38.8 2:27:17.8Pdiff
Miami, Florida 116.2014:53.1 2:27:32.1Pdiff
Ottawa, Canada 117.9015:00.6 2:27:39.6Pdiff
Washington, D.C. 118.0615:01.4 2:27:40.4Pdiff
Philadelphia, Pennsylvania 119.3415:07.0 2:27:46.0Pdiff
New York, New York 120.0715:10.3 2:27:49.3Pdiff
Moscow, Russia 120.6515:12.9 2:27:51.9Pdiff
Boston, Massachusetts 121.8615:18.2 2:27:57.2Pdiff
Bangor, Maine 122.8115:22.4 2:28:01.4Pdiff
Nairobi, Kenya 128.0215:45.6 2:28:24.6Pdiff
San Juan, Puerto Rico 129.2115:50.8 2:28:29.8Pdiff
Bergen, Norway 129.3315:51.4 2:28:30.4Pdiff
London, England 138.7316:33.1 2:29:12.1Pdiff
Rome, Italy 142.0916:48.0 2:29:27.0Pdiff

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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