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 19.14 4:20.2 1:05:08.2P
Wellington, New Zealand 30.62 6:10.8 1:06:58.8P
Agana, Guam 32.05 6:23.4 1:07:11.4P
Honolulu, Hawaii 49.29 8:45.4 1:09:33.4P
Tokyo, Japan 52.84 9:12.0 1:10:00.0P
Beijing, China 68.2810:57.5 1:11:45.5P
Anchorage, Alaska 81.0612:11.5 1:12:59.5P
San Francisco, California 83.9312:26.4 1:13:14.4P
Los Angeles, California 85.9712:36.7 1:13:24.7P
Kathmandu, Nepal 86.3312:38.4 1:13:26.4P
Seattle, Washington 87.4612:44.0 1:13:32.0P
Phoenix, Arizona 90.7712:59.5 1:13:47.5P
Palmer Station, Antarctica 93.2613:11.0 1:13:59.0P
Albuquerque, New Mexico 95.5113:21.2 1:14:09.2P
Golden, Colorado 97.4313:29.9 1:14:17.9P
Mexico City, Mexico 99.4413:38.8 1:14:26.8Pdiff
Brownsville, Texas 101.9013:49.7 1:14:37.7Pdiff
Wichita, Kansas 103.3013:55.9 1:14:43.9Pdiff
Duluth, Minnesota 107.4214:14.2 1:15:02.2Pdiff
St. Louis, Missouri 108.9114:20.9 1:15:08.9Pdiff
Knoxville, Tennessee 113.0114:39.0 1:15:27.0Pdiff
Lima, Peru 114.1514:44.1 1:15:32.1Pdiff
Miami, Florida 117.4514:58.8 1:15:46.8Pdiff
Ottawa, Canada 118.9215:05.3 1:15:53.3Pdiff
Washington, D.C. 119.1915:06.5 1:15:54.5Pdiff
Moscow, Russia 120.1315:10.7 1:15:58.7Pdiff
Philadelphia, Pennsylvania 120.4415:12.0 1:16:00.0Pdiff
New York, New York 121.1615:15.2 1:16:03.2Pdiff
Boston, Massachusetts 122.9215:23.1 1:16:11.1Pdiff
Bangor, Maine 123.8315:27.1 1:16:15.1Pdiff
Nairobi, Kenya 126.7215:39.9 1:16:27.9Pdiff
Bergen, Norway 129.2115:51.0 1:16:39.0Pdiff
San Juan, Puerto Rico 130.5015:56.7 1:16:44.7Pdiff
London, England 138.5916:32.6 1:17:20.6Pdiff
Rome, Italy 141.5216:45.6 1:17:33.6Pdiff

Travel Time Information and Calculator

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