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 19.73 3:51.819:15:01.8P
Brisbane, Australia 25.54 4:43.519:15:53.5P
Honolulu, Hawaii 48.03 7:46.919:18:56.9P
Agana, Guam 49.80 7:59.919:19:09.9P
Tokyo, Japan 69.2210:09.019:21:19.0P
Palmer Station, Antarctica 78.7911:03.019:22:13.0P
San Francisco, California 80.1211:09.919:22:19.9P
Los Angeles, California 80.6611:12.719:22:22.7P
Phoenix, Arizona 84.6711:32.819:22:42.8P
Beijing, China 85.8411:38.419:22:48.4P
Anchorage, Alaska 86.3811:40.919:22:50.9P
Seattle, Washington 86.3911:41.019:22:51.0P
Mexico City, Mexico 88.6311:51.419:23:01.4P
Albuquerque, New Mexico 89.4011:55.019:23:05.0P
Golden, Colorado 92.5412:09.419:23:19.4P
Brownsville, Texas 92.6212:09.819:23:19.8P
Lima, Peru 96.7312:28.219:23:38.2Pdiff
Wichita, Kansas 97.3312:30.919:23:40.9Pdiff
St. Louis, Missouri 102.8712:55.519:24:05.5Pdiff
Duluth, Minnesota 103.9813:00.419:24:10.4Pdiff
Kathmandu, Nepal 104.3413:02.019:24:12.0Pdiff
Knoxville, Tennessee 105.9713:09.219:24:19.2Pdiff
Miami, Florida 107.2613:15.019:24:25.0Pdiff
Washington, D.C. 112.9313:40.219:24:50.2Pdiff
Philadelphia, Pennsylvania 114.5413:47.319:24:57.3Pdiff
Ottawa, Canada 114.8813:48.819:24:58.8Pdiff
New York, New York 115.5313:51.719:25:01.7Pdiff
San Juan, Puerto Rico 117.8114:01.819:25:11.8Pdiff
Boston, Massachusetts 117.8914:02.219:25:12.2Pdiff
Bangor, Maine 119.7414:10.419:25:20.4Pdiff
Moscow, Russia 136.5815:25.119:26:35.1Pdiff
Nairobi, Kenya 137.6415:29.819:26:39.8Pdiff
Bergen, Norway 141.6015:47.419:26:57.4Pdiff
London, England 150.6518:41.119:29:51.1PKPdf
Rome, Italy 157.8618:51.419:30:01.4PKPdf

Travel Time Information and Calculator

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