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Earthquake Hazards Program


Sunday, January 18, 2009 at 14:11:48 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
Wellington, New Zealand 12.66 3:00.114:14:46.1Pn
Brisbane, Australia 25.56 5:29.014:17:15.0P
Honolulu, Hawaii 54.61 9:28.614:21:14.6P
Agana, Guam 56.24 9:40.314:21:26.3P
Palmer Station, Antarctica 70.9111:17.414:23:03.4P
Tokyo, Japan 76.5211:50.314:23:36.3P
Los Angeles, California 85.0912:36.114:24:22.1P
San Francisco, California 85.1212:36.214:24:22.2P
Phoenix, Arizona 88.6812:53.514:24:39.5P
Mexico City, Mexico 90.3113:01.114:24:47.1P
Seattle, Washington 92.1713:09.714:24:55.7P
Beijing, China 92.4713:11.114:24:57.1P
Lima, Peru 93.2513:14.714:25:00.7P
Albuquerque, New Mexico 93.2813:14.814:25:00.8P
Anchorage, Alaska 93.7613:17.014:25:03.0P
Brownsville, Texas 94.9813:22.614:25:08.6P
Golden, Colorado 96.8313:31.014:25:17.0P
Wichita, Kansas 101.0513:49.814:25:35.8Pdiff
St. Louis, Missouri 106.4214:13.614:25:59.6Pdiff
Duluth, Minnesota 108.5314:23.014:26:09.0Pdiff
Kathmandu, Nepal 108.6914:23.714:26:09.7Pdiff
Miami, Florida 108.7214:23.814:26:09.8Pdiff
Knoxville, Tennessee 108.9814:25.014:26:11.0Pdiff
Washington, D.C. 116.0814:56.514:26:42.5Pdiff
San Juan, Puerto Rico 117.5715:03.114:26:49.1Pdiff
Philadephia, Pennsylvania 117.7815:04.014:26:50.0Pdiff
New York, New York 118.8515:08.814:26:54.8Pdiff
Ottawa, Canada 118.8815:08.914:26:54.9Pdiff
Boston, Massachusetts 121.3815:20.014:27:06.0Pdiff
Bangor, Maine 123.5515:29.614:27:15.6Pdiff
Nairobi, Kenya 134.5016:18.214:28:04.2Pdiff
Moscow, Russia 144.0317:00.514:28:46.5Pdiff
Bergen, Norway 149.5919:45.714:31:31.7PKPdf
London, England 158.5119:58.814:31:44.8PKPdf
Rome, Italy 165.4920:06.314:31:52.3PKPdf

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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