Historic Earthquakes

Magnitude 7.0 CENTRAL MEXICO
1999 June 15 20:42:05 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 1.94 0:30.8 20:42:35.8 Pn
Brownsville, Texas 7.48 1:46.4 20:43:51.4 Pn
Miami, Florida 17.58 4:00.3 20:46:05.3 Pn
Albuquerque, New Mexico 18.54 4:10.9 20:46:15.9 P
Wichita, Kansas 19.31 4:19.4 20:46:24.4 P
Knoxville, Tennessee 20.59 4:33.2 20:46:38.2 P
St. Louis, Missouri 21.16 4:39.3 20:46:44.3 P
Golden, Colorado 22.33 4:51.8 20:46:56.8 P
Los Angeles, California 24.26 5:10.5 20:47:15.5 P
Washington, D.C. 27.05 5:35.7 20:47:40.7 P
Duluth, Minnesota 28.62 5:49.7 20:47:54.7 P
Philadelphia, Pennsylvania 28.84 5:51.6 20:47:56.6 P
San Francisco, California 29.16 5:54.5 20:47:59.5 P
San Juan, Puerto Rico 29.67 5:59.0 20:48:04.0 P
New York, New York 30.00 6:01.9 20:48:06.9 P
Ottawa, Canada 32.45 6:23.4 20:48:28.4 P
Boston, Massachusetts 32.72 6:25.8 20:48:30.8 P
Bangor, Maine 35.58 6:50.5 20:48:55.5 P
Seattle, Washington 35.68 6:51.4 20:48:56.4 P
Lima, Peru 36.35 6:57.1 20:49:02.1 P
Anchorage, Alaska 56.34 9:33.6 20:51:38.6 P
Honolulu, Hawaii 56.59 9:35.4 20:51:40.4 P
London, England 80.24 12:03.0 20:54:08.0 P
Bergen, Norway 80.34 12:03.6 20:54:08.6 P
Palmer Station, Antarctica 89.32 12:48.5 20:54:53.5 P
Rome, Italy 91.91 13:00.5 20:55:05.5 P
Moscow, Russia 97.01 13:23.8 20:55:28.8 P
Wellington, New Zealand 100.27 13:38.3 20:55:43.3 Pdiff
Tokyo, Japan 103.72 13:53.6 20:55:58.6 Pdiff
Agana, Guam 111.02 14:26.0 20:56:31.0 Pdiff
Beijing, China 113.97 14:39.1 20:56:44.1 Pdiff
Brisbane, Australia 115.24 14:44.7 20:56:49.7 Pdiff
Nairobi, Kenya 132.04 15:59.3 20:58:04.3 Pdiff
Kathmandu, Nepal 134.12 16:08.5 20:58:13.5 Pdiff