Historic Earthquakes: Travel Times

Magnitude 4.0 SOUTH DAKOTA
2003 May 25 07:32:32 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
Golden, Colorado 4.16 1:04.2 7:33:36.2Pn
Wichita, Kansas 6.40 1:34.9 7:34:06.9Pn
Duluth, Minnesota 7.83 1:54.5 7:34:26.5Pn
Albuquerque, New Mexico 8.81 2:08.0 7:34:40.0Pn
St. Louis, Missouri 9.90 2:23.0 7:34:55.0Pn
Knoxville, Tennessee 14.78 3:29.6 7:36:01.6Pn
Seattle, Washington 15.03 3:33.1 7:36:05.1Pn
Los Angeles, California 15.61 3:40.7 7:36:12.8Pn
San Francisco, California 16.47 3:51.7 7:36:23.7Pn
Brownsville, Texas 17.56 4:05.4 7:36:37.4Pn
Ottawa, Canada 18.90 4:21.3 7:36:53.3P
Washington, D.C. 19.24 4:25.1 7:36:57.1P
Philadelphia, Pennsylvania 20.26 4:36.3 7:37:08.3P
New York, New York 20.89 4:43.1 7:37:15.1P
Boston, Massachusetts 22.63 5:01.7 7:37:33.7P
Mexico City, Mexico 23.74 5:13.2 7:37:45.2P
Bangor, Maine 23.85 5:14.2 7:37:46.2P
Miami, Florida 24.82 5:23.0 7:37:55.0P
Anchorage, Alaska 33.56 6:40.8 7:39:12.8P
San Juan, Puerto Rico 38.91 7:26.4 7:39:58.4P
Honolulu, Hawaii 51.03 9:02.9 7:41:34.9P
Lima, Peru 59.4810:03.9 7:42:35.9P
Bergen, Norway 61.1210:15.1 7:42:47.1P
London, England 64.0210:34.5 7:43:06.5P
Moscow, Russia 75.7511:46.8 7:44:18.8P
Rome, Italy 76.9011:53.3 7:44:25.3P
Tokyo, Japan 83.5412:29.1 7:45:01.1P
Beijing, China 90.3613:02.2 7:45:34.2P
Agana, Guam 97.1413:33.2 7:46:05.2P
Kathmandu, Nepal 109.2214:26.9 7:46:58.9Pdiff
Wellington, New Zealand 112.5214:41.5 7:47:13.5Pdiff
Palmer Station, Antarctica 114.2014:49.0 7:47:21.0Pdiff
Brisbane, Australia 118.8015:09.4 7:47:41.4Pdiff
Nairobi, Kenya 124.4515:34.5 7:48:06.5Pdiff