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Earthquake Hazards Program


Friday, August 28, 2009 at 01:52:06 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
Kathmandu, Nepal 13.25 3:08.2 1:55:14.2Pn
Beijing, China 16.32 3:49.3 1:55:55.3Pn
Tokyo, Japan 35.16 6:53.8 1:58:59.8P
Moscow, Russia 42.25 7:53.3 1:59:59.3P
Agana, Guam 49.73 8:52.2 2:00:58.2P
Bergen, Norway 58.25 9:54.5 2:02:00.5P
Rome, Italy 61.6110:17.7 2:02:23.7P
London, England 64.8510:39.2 2:02:45.2P
Nairobi, Kenya 66.6310:50.7 2:02:56.7P
Anchorage, Alaska 68.0210:59.5 2:03:05.5P
Brisbane, Australia 84.2212:31.7 2:04:37.7P
Seattle, Washington 88.3712:52.0 2:04:58.0P
Honolulu, Hawaii 89.4112:56.9 2:05:02.9P
Duluth, Minnesota 95.6213:25.5 2:05:31.5P
Bangor, Maine 96.6713:30.3 2:05:36.3P
Ottawa, Canada 96.8913:31.2 2:05:37.2P
San Francisco, California 97.0713:32.0 2:05:38.0P
Boston, Massachusetts 99.4313:42.5 2:05:48.5Pdiff
Golden, Colorado 100.5713:47.6 2:05:53.6Pdiff
New York, New York 101.3813:51.2 2:05:57.2Pdiff
Los Angeles, California 101.9413:53.7 2:05:59.7Pdiff
Philadelphia, Pennsylvania 102.2613:55.1 2:06:01.1Pdiff
Washington, D.C. 103.4814:00.5 2:06:06.5Pdiff
St. Louis, Missouri 103.8014:02.0 2:06:08.0Pdiff
Wichita, Kansas 103.9414:02.6 2:06:08.6Pdiff
Phoenix, Arizona 104.6414:05.7 2:06:11.7Pdiff
Albuquerque, New Mexico 104.6714:05.8 2:06:11.8Pdiff
Knoxville, Tennessee 106.7014:14.9 2:06:20.9Pdiff
Wellington, New Zealand 106.7014:14.8 2:06:20.8Pdiff
Brownsville, Texas 115.5314:54.0 2:07:00.0Pdiff
Miami, Florida 116.7414:59.4 2:07:05.4Pdiff
Mexico City, Mexico 121.4815:20.5 2:07:26.5Pdiff
San Juan, Puerto Rico 121.5415:20.7 2:07:26.7Pdiff
Palmer Station, Antarctica 147.8219:42.7 2:11:48.7PKPdf
Lima, Peru 153.6719:52.1 2:11:58.1PKPdf

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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