Historic Earthquakes: Travel Times

Magnitude 7.7 EL SALVADOR
2001 January 13 17:33:32 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
Mexico City, Mexico 11.91 2:47.0 17:36:19.0 Pn
Miami, Florida 14.96 3:27.9 17:36:59.9 Pn
Brownsville, Texas 15.26 3:31.7 17:37:03.7 Pn
San Juan, Puerto Rico 22.34 4:52.7 17:38:24.7 P
Knoxville, Tennessee 23.03 4:59.9 17:38:31.9 P
St. Louis, Missouri 25.56 5:23.2 17:38:55.2 P
Wichita, Kansas 25.81 5:25.4 17:38:57.4 P
Albuquerque, New Mexico 27.31 5:39.0 17:39:11.0 P
Lima, Peru 27.50 5:40.7 17:39:12.7 P
Washington, D.C. 27.73 5:42.8 17:39:14.8 P
Philadelphia, Pennsylvania 29.32 5:56.9 17:39:28.9 P
Golden, Colorado 30.34 6:05.9 17:39:37.9 P
New York, New York 30.41 6:06.5 17:39:38.5 P
Boston, Massachusetts 32.93 6:28.6 17:40:00.6 P
Duluth, Minnesota 33.73 6:35.5 17:40:07.5 P
Los Angeles, California 34.04 6:38.2 17:40:10.2 P
Ottawa, Canada 34.09 6:38.7 17:40:10.7 P
Bangor, Maine 35.92 6:54.3 17:40:26.3 P
San Francisco, California 38.85 7:19.1 17:40:51.1 P
Seattle, Washington 44.56 8:05.8 17:41:37.8 P
Anchorage, Alaska 64.97 10:33.5 17:44:05.5 P
Honolulu, Hawaii 66.17 10:41.2 17:44:13.2 P
London, England 78.99 11:57.4 17:45:29.4 P
Bergen, Norway 80.74 12:06.9 17:45:38.9 P
Palmer Station, Antarctica 82.54 12:16.3 17:45:48.3 P
Rome, Italy 89.53 12:50.7 17:46:22.7 P
Moscow, Russia 98.15 13:30.0 17:47:02.0 P
Wellington, New Zealand 103.37 13:53.2 17:47:25.2 Pdiff
Tokyo, Japan 113.37 14:37.6 17:48:09.6 Pdiff
Agana, Guam 120.88 15:10.9 17:48:42.9 Pdiff
Brisbane, Australia 120.92 15:11.1 17:48:43.1 Pdiff
Beijing, China 122.38 15:17.6 17:48:49.6 Pdiff
Nairobi, Kenya 124.80 15:28.3 17:49:00.3 Pdiff
Kathmandu, Nepal 139.09 16:31.8 17:50:03.8 Pdiff