Theoretical P-Wave Travel Times

Friday, March 11, 2011 at 05:46:24 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
Travel Time
Arrival Time
Tokyo, Japan 3.35 0:50.3 5:47:14.3Pn
Beijing, China 20.18 4:32.0 5:50:56.0P
Agana, Guam 24.81 5:19.4 5:51:43.4P
Anchorage, Alaska 46.82 8:26.8 5:54:50.8P
Kathmandu, Nepal 48.34 8:38.6 5:55:02.6P
Honolulu, Hawaii 53.69 9:18.9 5:55:42.9P
Seattle, Washington 66.0110:43.7 5:57:07.7P
Brisbane, Australia 66.1910:44.8 5:57:08.8P
Moscow, Russia 66.6610:47.8 5:57:11.8P
San Francisco, California 71.3611:17.0 5:57:41.0P
Bergen, Norway 75.5611:41.7 5:58:05.7P
Los Angeles, California 76.2711:45.8 5:58:09.8P
Phoenix, Arizona 80.6812:10.1 5:58:34.1P
Golden, Colorado 80.7112:10.3 5:58:34.3P
Duluth, Minnesota 82.3012:18.7 5:58:42.7P
Albuquerque, New Mexico 83.0112:22.4 5:58:46.4P
Wellington, New Zealand 84.5412:30.1 5:58:54.1P
London, England 84.7712:31.4 5:58:55.3P
Wichita, Kansas 86.4712:39.8 5:59:03.8P
Rome, Italy 88.0712:47.5 5:59:11.5P
St. Louis, Missouri 89.4412:53.9 5:59:17.9P
Ottawa, Canada 89.9112:56.1 5:59:20.1P
Bangor, Maine 92.6613:08.8 5:59:32.8P
Knoxville, Tennessee 94.0413:15.2 5:59:39.2P
Boston, Massachusetts 94.1813:15.8 5:59:39.8P
New York, New York 94.6413:17.9 5:59:41.9P
Philadelphia, Pennsylvania 94.8813:19.0 5:59:43.0P
Brownsville, Texas 95.0413:19.7 5:59:43.7P
Washington, D.C. 95.0913:20.0 5:59:44.0P
Mexico City, Mexico 98.6313:35.9 5:59:59.9Pdiff
Nairobi, Kenya 102.9713:55.1 6:00:19.1Pdiff
Miami, Florida 104.8414:03.4 6:00:27.4Pdiff
San Juan, Puerto Rico 117.5114:59.7 6:01:23.7Pdiff
Lima, Peru 136.3116:23.1 6:02:47.1Pdiff
Palmer Station, Antarctica 147.0119:38.1 6:06:02.1PKPdf

Travel Time Information and Calculator

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