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Earthquake Hazards Program

Theoretical P-Wave Travel Times

Magnitude 6.3 NORTHERN IRAN
2004 May 28 12:38:46 UTC

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

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
Travel Time
Arrival Time
Moscow, Russia 21.66 4:48.412:43:34.4P
Kathmandu, Nepal 29.76 6:04.312:44:50.2P
Rome, Italy 30.66 6:12.212:44:58.2P
Bergen, Norway 37.93 7:15.012:46:01.0P
London, England 39.42 7:27.512:46:13.5P
Nairobi, Kenya 39.80 7:30.712:46:16.7P
Beijing, China 50.18 8:53.212:47:39.2P
Tokyo, Japan 68.7311:01.412:49:47.4P
Anchorage, Alaska 81.3012:14.012:50:60.0P
Bangor, Maine 82.9412:22.612:51:08.6P
Agana, Guam 84.6812:31.512:51:17.5P
Ottawa, Canada 85.8012:37.112:51:23.1P
Boston, Massachusetts 85.8912:37.512:51:23.5P
New York, New York 88.5612:50.312:51:36.3P
Philadephia, Pennsylvania 89.7112:55.812:51:41.8P
Duluth, Minnesota 91.1813:02.612:51:48.6P
Washington, D.C. 91.4513:03.812:51:49.8P
Seattle, Washington 96.1413:25.312:52:11.3P
St. Louis, Missouri 97.5213:31.512:52:17.5P
Knoxville, Tennessee 97.6613:32.112:52:18.1P
San Juan, Puerto Rico 99.8513:41.812:52:27.8Pdiff
Wichita, Kansas 100.9213:46.612:52:32.6Pdiff
Golden, Colorado 101.3913:48.712:52:34.7Pdiff
Miami, Florida 103.3413:57.312:52:43.3Pdiff
San Francisco, California 106.1214:09.712:52:55.7Pdiff
Albuquerque, New Mexico 106.1714:09.912:52:55.9Pdiff
Los Angeles, California 109.4114:24.312:53:10.3Pdiff
Brownsville, Texas 111.6314:34.112:53:20.1Pdiff
Brisbane, Australia 114.3814:46.312:53:32.3Pdiff
Honolulu, Hawaii 116.3414:55.012:53:41.0Pdiff
Mexico City, Mexico 118.0915:02.812:53:48.8Pdiff
Lima, Peru 128.0315:46.912:54:32.9Pdiff
Palmer Station, Antarctica 132.6616:07.512:54:53.5Pdiff
Wellington, New Zealand 136.1116:22.812:55:08.8Pdiff


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