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Earthquake Hazards Program

Theoretical P-Wave Travel Times

Magnitude 6.0 CENTRAL CALIFORNIA
Tuesday, September 28, 2004 at 17:15:24 UTC

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

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
Los Angeles, California 2.50 0:41.717:16:05.7Pn
San Francisco, California 2.55 0:42.417:16:06.4Pn
Albuquerque, New Mexico 11.29 2:42.417:18:06.4Pn
Seattle, Washington 12.09 2:53.417:18:17.4Pn
Golden, Colorado 12.69 3:01.617:18:25.6Pn
Wichita, Kansas 18.61 4:18.817:19:42.8P
Brownsville, Texas 21.98 4:55.317:20:19.3P
Duluth, Minnesota 23.79 5:14.217:20:38.2P
St. Louis, Missouri 24.16 5:17.617:20:41.6P
Mexico City, Mexico 24.84 5:23.817:20:47.8P
Knoxville, Tennessee 28.50 5:56.817:21:20.8P
Anchorage, Alaska 31.57 6:23.917:21:47.9P
Washington, D.C. 34.41 6:48.717:22:12.7P
Ottawa, Canada 34.90 6:53.017:22:17.0P
Honolulu, Hawaii 35.64 6:59.317:22:23.3P
Philadephia, Pennsylvania 35.70 6:59.817:22:23.8P
Miami, Florida 35.79 7:00.617:22:24.6P
New York, New York 36.47 7:06.417:22:30.4P
Boston, Massachusetts 38.44 7:23.117:22:47.1P
Bangor, Maine 39.85 7:34.917:22:58.9P
San Juan, Puerto Rico 50.68 9:00.917:24:24.9P
Lima, Peru 62.8210:27.217:25:51.2P
Bergen, Norway 74.4011:39.617:27:03.6P
Tokyo, Japan 77.0011:54.517:27:18.5P
London, England 78.5812:03.317:27:27.3P
Agana, Guam 86.0812:42.517:28:06.5P
Moscow, Russia 86.9512:46.717:28:10.7P
Beijing, China 88.2712:53.117:28:17.1P
Rome, Italy 91.5313:08.217:28:32.2P
Wellington, New Zealand 96.9713:33.117:28:57.1P
Brisbane, Australia 102.9413:59.617:29:23.6Pdiff
Palmer Station, Antarctica 111.5314:37.817:30:01.8Pdiff
Kathmandu, Nepal 112.3514:41.417:30:05.4Pdiff
Nairobi, Kenya 139.7116:42.917:32:06.9Pdiff

Travel Time Information and Calculator

 


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