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 19.24 4:21.2 1:01:08.2P
Wellington, New Zealand 30.78 6:12.1 1:02:59.1P
Agana, Guam 31.91 6:22.0 1:03:09.0P
Honolulu, Hawaii 49.22 8:44.7 1:05:31.7P
Tokyo, Japan 52.69 9:10.8 1:05:57.8P
Beijing, China 68.1410:56.5 1:07:43.5P
Anchorage, Alaska 80.9312:10.7 1:08:57.7P
San Francisco, California 83.8612:26.0 1:09:13.0P
Los Angeles, California 85.9112:36.3 1:09:23.3P
Kathmandu, Nepal 86.2212:37.8 1:09:24.8P
Seattle, Washington 87.3812:43.4 1:09:30.4P
Phoenix, Arizona 90.7212:59.1 1:09:46.1P
Palmer Station, Antarctica 93.4113:11.5 1:09:58.5P
Albuquerque, New Mexico 95.4613:20.9 1:10:07.9P
Golden, Colorado 97.3713:29.5 1:10:16.5P
Mexico City, Mexico 99.4313:38.7 1:10:25.7Pdiff
Brownsville, Texas 101.8813:49.5 1:10:36.5Pdiff
Wichita, Kansas 103.2413:55.6 1:10:42.6Pdiff
Duluth, Minnesota 107.3414:13.8 1:11:00.8Pdiff
St. Louis, Missouri 108.8514:20.5 1:11:07.5Pdiff
Knoxville, Tennessee 112.9614:38.7 1:11:25.7Pdiff
Lima, Peru 114.2314:44.4 1:11:31.4Pdiff
Miami, Florida 117.4314:58.6 1:11:45.6Pdiff
Ottawa, Canada 118.8515:04.8 1:11:51.8Pdiff
Washington, D.C. 119.1215:06.1 1:11:53.1Pdiff
Moscow, Russia 119.9815:09.9 1:11:56.9Pdiff
Philadelphia, Pennsylvania 120.3815:11.6 1:11:58.6Pdiff
New York, New York 121.1015:14.8 1:12:01.8Pdiff
Boston, Massachusetts 122.8515:22.6 1:12:09.6Pdiff
Bangor, Maine 123.7515:26.6 1:12:13.6Pdiff
Nairobi, Kenya 126.7115:39.7 1:12:26.7Pdiff
Bergen, Norway 129.0615:50.1 1:12:37.1Pdiff
San Juan, Puerto Rico 130.5015:56.6 1:12:43.6Pdiff
London, England 138.4416:31.8 1:13:18.8Pdiff
Rome, Italy 141.3716:44.8 1:13:31.8Pdiff

Travel Time Information and Calculator

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