Theoretical P-Wave Travel Times

Magnitude 5.8 BAJA CALIFORNIA, MEXICO
2009 December 30 18:48:57 UTC

Theoretical P-wave Travel Times
Theoretical P-wave Travel Times

These maps show 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
Phoenix, Arizona 2.80 0:45.218:49:42.2Pn
Los Angeles, California 3.00 0:47.918:49:44.9Pn
Albuquerque, New Mexico 7.59 1:51.118:50:48.1Pn
San Francisco, California 7.93 1:55.718:50:52.7Pn
Golden, Colorado 10.87 2:35.918:51:32.9Pn
Wichita, Kansas 15.54 3:39.518:52:36.5Pn
Seattle, Washington 16.24 3:48.518:52:45.5Pn
Brownsville, Texas 16.78 3:55.418:52:52.4Pn
Mexico City, Mexico 19.38 4:26.318:53:23.3P
St. Louis, Missouri 21.18 4:46.018:53:43.0P
Duluth, Minnesota 22.66 5:01.718:53:58.7P
Knoxville, Tennessee 25.03 5:24.718:54:21.7P
Miami, Florida 31.22 6:19.918:55:16.9P
Washington, D.C. 31.49 6:22.318:55:19.3P
Philadelphia, Pennsylvania 32.94 6:35.118:55:32.1P
Ottawa, Canada 32.99 6:35.518:55:32.5P
New York, New York 33.83 6:42.818:55:39.8P
Boston, Massachusetts 36.06 7:02.018:55:59.0P
Anchorage, Alaska 36.50 7:05.718:56:02.8P
Bangor, Maine 37.82 7:17.018:56:14.0P
Honolulu, Hawaii 39.38 7:30.118:56:27.1P
San Juan, Puerto Rico 46.06 8:24.218:57:21.2P
Lima, Peru 57.39 9:49.018:58:46.0P
Bergen, Norway 75.5011:45.019:00:42.0P
London, England 78.8512:03.819:01:00.8P
Tokyo, Japan 82.4512:23.119:01:20.1P
Moscow, Russia 89.1412:56.119:01:53.1P
Agana, Guam 91.1413:05.519:02:02.5P
Rome, Italy 91.7613:08.419:02:05.4P
Beijing, China 93.5613:16.619:02:13.6P
Wellington, New Zealand 97.6613:35.219:02:32.2P
Brisbane, Australia 105.6014:10.519:03:07.5Pdiff
Palmer Station, Antarctica 106.9914:16.619:03:13.6Pdiff
Kathmandu, Nepal 117.0715:01.419:03:58.4Pdiff
Nairobi, Kenya 139.3216:40.119:05:37.1Pdiff

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