Theoretical P-Wave Travel Times

Magnitude 7.2 BAJA CALIFORNIA, MEXICO
2010 April 04 22:40:42 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 3.00 0:45.322:41:24.3Pn
Los Angeles, California 3.18 0:47.822:41:26.8Pn
Albuquerque, New Mexico 7.78 1:51.022:42:30.0Pn
San Francisco, California 8.17 1:56.322:42:35.3Pn
Golden, Colorado 11.17 2:37.322:43:16.3Pn
Wichita, Kansas 15.74 3:39.322:44:18.3Pn
Seattle, Washington 16.59 3:50.122:44:29.1Pn
Brownsville, Texas 16.70 3:51.522:44:30.5Pn
Mexico City, Mexico 19.18 4:20.922:44:59.9P
St. Louis, Missouri 21.38 4:44.722:45:23.7P
Duluth, Minnesota 22.96 5:01.522:45:40.5P
Knoxville, Tennessee 25.18 5:22.522:46:01.5P
Miami, Florida 31.24 6:16.522:46:55.5P
Washington, D.C. 31.68 6:20.422:46:59.4P
Philadelphia, Pennsylvania 33.14 6:33.222:47:12.2P
Ottawa, Canada 33.24 6:34.022:47:13.0P
New York, New York 34.04 6:41.022:47:20.0P
Boston, Massachusetts 36.28 7:00.222:47:39.2P
Anchorage, Alaska 36.82 7:04.822:47:43.8P
Bangor, Maine 38.06 7:15.322:47:54.3P
Honolulu, Hawaii 39.30 7:25.822:48:04.8P
San Juan, Puerto Rico 46.06 8:20.622:48:59.6P
Lima, Peru 57.15 9:43.522:50:22.5P
Bergen, Norway 75.8611:43.222:52:22.1P
London, England 79.1912:01.722:52:40.7P
Tokyo, Japan 82.6512:20.222:52:59.2P
Moscow, Russia 89.5112:53.922:53:32.9P
Agana, Guam 91.2113:01.822:53:40.8P
Rome, Italy 92.0913:05.922:53:44.9P
Beijing, China 93.8413:13.922:53:52.9P
Wellington, New Zealand 97.3713:29.922:54:08.9P
Brisbane, Australia 105.4114:05.622:54:44.6Pdiff
Palmer Station, Antarctica 106.6514:11.122:54:50.1Pdiff
Kathmandu, Nepal 117.4114:58.922:55:37.9Pdiff
Nairobi, Kenya 139.6116:37.422:57:16.4Pdiff

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