Theoretical P-Wave Travel Times

Tuesday, March 22, 2011 at 07:18:47 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 3.74 0:56.0 7:19:43.0Pn
Beijing, China 21.65 4:48.4 7:23:35.4P
Agana, Guam 23.69 5:09.6 7:23:56.6P
Anchorage, Alaska 46.88 8:27.7 7:27:14.7P
Kathmandu, Nepal 49.70 8:49.5 7:27:36.5P
Honolulu, Hawaii 52.43 9:10.0 7:27:57.0P
Brisbane, Australia 64.9610:37.3 7:29:24.3P
Seattle, Washington 65.7910:42.7 7:29:29.7P
Moscow, Russia 68.2410:58.3 7:29:45.3P
San Francisco, California 70.8811:14.6 7:30:01.6P
Los Angeles, California 75.7611:43.4 7:30:30.4P
Bergen, Norway 76.9711:50.3 7:30:37.2P
Phoenix, Arizona 80.2412:08.3 7:30:55.3P
Golden, Colorado 80.5112:09.7 7:30:56.7P
Duluth, Minnesota 82.4312:19.9 7:31:06.9P
Albuquerque, New Mexico 82.6912:21.2 7:31:08.2P
Wellington, New Zealand 83.0812:23.2 7:31:10.2P
London, England 86.2112:39.0 7:31:26.0P
Wichita, Kansas 86.3512:39.7 7:31:26.7P
St. Louis, Missouri 89.4512:54.5 7:31:41.5P
Rome, Italy 89.6412:55.4 7:31:42.4P
Ottawa, Canada 90.2812:58.3 7:31:45.3P
Bangor, Maine 93.1413:11.6 7:31:58.6P
Knoxville, Tennessee 94.1013:16.0 7:32:03.0P
Boston, Massachusetts 94.6013:18.2 7:32:05.2P
Brownsville, Texas 94.6813:18.6 7:32:05.6P
New York, New York 94.9813:20.0 7:32:07.0P
Philadelphia, Pennsylvania 95.1913:20.9 7:32:07.9P
Washington, D.C. 95.3513:21.6 7:32:08.7P
Mexico City, Mexico 98.1313:34.1 7:32:21.1P
Nairobi, Kenya 104.3814:01.9 7:32:48.9Pdiff
Miami, Florida 104.8314:03.9 7:32:50.9Pdiff
San Juan, Puerto Rico 117.7415:01.2 7:33:48.2Pdiff
Lima, Peru 135.6016:20.5 7:35:07.5Pdiff
Palmer Station, Antarctica 145.6319:35.3 7:38:22.2PKPbc

Travel Time Information and Calculator

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