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 20.21 4:35.0 4:02:07.0P
Wellington, New Zealand 31.40 6:21.1 4:03:53.1P
Agana, Guam 31.67 6:23.5 4:03:55.5P
Honolulu, Hawaii 48.27 8:41.1 4:06:13.1P
Tokyo, Japan 52.23 9:11.1 4:06:43.1P
Beijing, China 67.8810:58.6 4:08:30.6P
Anchorage, Alaska 80.0012:09.6 4:09:41.6P
San Francisco, California 82.9212:25.0 4:09:57.0P
Los Angeles, California 84.9912:35.6 4:10:07.6P
Kathmandu, Nepal 86.3412:42.2 4:10:14.2P
Seattle, Washington 86.4112:42.6 4:10:14.6P
Phoenix, Arizona 89.8112:58.8 4:10:30.8P
Palmer Station, Antarctica 94.0013:18.1 4:10:50.1P
Albuquerque, New Mexico 94.5513:20.6 4:10:52.6P
Golden, Colorado 96.4313:29.2 4:11:01.2P
Mexico City, Mexico 98.6513:39.1 4:11:11.1Pdiff
Brownsville, Texas 101.0413:49.7 4:11:21.7Pdiff
Wichita, Kansas 102.3213:55.4 4:11:27.4Pdiff
Duluth, Minnesota 106.3814:13.4 4:11:45.4Pdiff
St. Louis, Missouri 107.9214:20.3 4:11:52.3Pdiff
Knoxville, Tennessee 112.0414:38.5 4:12:10.5Pdiff
Lima, Peru 113.9514:47.0 4:12:19.0Pdiff
Miami, Florida 116.6014:58.8 4:12:30.8Pdiff
Ottawa, Canada 117.8915:04.5 4:12:36.5Pdiff
Washington, D.C. 118.1915:05.8 4:12:37.8Pdiff
Philadelphia, Pennsylvania 119.4415:11.4 4:12:43.4Pdiff
Moscow, Russia 119.6015:12.1 4:12:44.1Pdiff
New York, New York 120.1515:14.5 4:12:46.5Pdiff
Boston, Massachusetts 121.9015:22.3 4:12:54.3Pdiff
Bangor, Maine 122.7815:26.2 4:12:58.2Pdiff
Nairobi, Kenya 127.4115:46.8 4:13:18.8Pdiff
Bergen, Norway 128.4215:51.2 4:13:23.2Pdiff
San Juan, Puerto Rico 129.7515:57.2 4:13:29.2Pdiff
London, England 137.8116:32.9 4:14:04.9Pdiff
Rome, Italy 141.0316:47.2 4:14:19.2Pdiff

Travel Time Information and Calculator

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