Historic Earthquakes: Travel Times

Magnitude 6.8 NORTHERN ALGERIA
2003 May 21 18:44:19 UTC

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
(degrees)
Travel Time
(min:secs)
Arrival Time
UTC
Phase
Rome, Italy 8.39 2:01.618:46:20.6Pn
London, England 14.87 3:30.318:47:49.3Pn
Bergen, Norway 23.53 5:10.518:49:29.5P
Moscow, Russia 29.64 6:05.618:50:24.6P
Nairobi, Kenya 48.81 8:45.218:53:04.2P
Bangor, Maine 53.78 9:22.518:53:41.5P
Boston, Massachusetts 56.21 9:40.118:53:59.1P
Ottawa, Canada 58.19 9:54.118:54:13.1P
New York, New York 58.85 9:58.818:54:17.8P
Philadelphia, Pennsylvania 59.9710:06.518:54:25.5P
Washington, D.C. 61.7410:18.518:54:37.5P
San Juan, Puerto Rico 63.2810:28.818:54:47.8P
Kathmandu, Nepal 67.6110:56.918:55:15.9P
Duluth, Minnesota 67.8710:58.518:55:17.5P
Knoxville, Tennessee 68.8211:04.518:55:23.5P
Miami, Florida 70.4711:14.718:55:33.7P
St. Louis, Missouri 70.8711:17.118:55:36.1P
Wichita, Kansas 76.0011:47.418:56:06.4P
Golden, Colorado 79.6612:07.718:56:26.7P
Anchorage, Alaska 79.9212:09.118:56:28.1P
Beijing, China 81.7012:18.618:56:37.6P
Seattle, Washington 82.9412:25.118:56:44.1P
Brownsville, Texas 83.2012:26.518:56:45.5P
Albuquerque, New Mexico 83.5412:28.218:56:47.2P
Mexico City, Mexico 88.4012:52.218:57:11.2P
Lima, Peru 89.9712:59.518:57:18.5P
San Francisco, California 90.6213:02.518:57:21.5P
Los Angeles, California 91.1413:05.018:57:24.0P
Tokyo, Japan 97.0413:31.918:57:50.9P
Palmer Station, Antarctica 115.9514:55.918:59:14.9Pdiff
Agana, Guam 117.8815:04.518:59:23.5Pdiff
Honolulu, Hawaii 119.5715:12.018:59:31.0Pdiff
Brisbane, Australia 152.4219:48.719:04:07.7PKPdf
Wellington, New Zealand 171.7420:08.419:04:27.4PKPdf