Theoretical P-Wave Travel Times

Magnitude 4.8 SOUTHWESTERN RYUKYU ISLANDS, JAPAN
Thursday, April 18, 2013 at 21:08:03 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
(degrees)
Travel Time
(min:secs)
Arrival Time
UTC
Phase
Beijing, China 16.10 3:43.5 8:23:40.5Pn
Tokyo, Japan 17.80 4:04.8 8:24:01.8Pn
Agana, Guam 23.16 5:03.2 8:25:00.2P
Kathmandu, Nepal 34.10 6:41.0 8:26:38.0P
Brisbane, Australia 59.39 9:58.6 8:29:55.6P
Anchorage, Alaska 67.0310:49.2 8:30:46.2P
Moscow, Russia 67.4210:51.7 8:30:48.7P
Honolulu, Hawaii 71.6611:17.9 8:31:14.9P
Wellington, New Zealand 81.2612:12.3 8:32:09.3P
Bergen, Norway 81.3212:12.6 8:32:09.6P
Seattle, Washington 86.8012:40.4 8:32:37.4P
Nairobi, Kenya 87.3312:43.0 8:32:40.0P
Rome, Italy 87.8912:45.6 8:32:42.6P
London, England 89.2612:52.1 8:32:49.1P
San Francisco, California 92.3613:06.5 8:33:03.5P
Los Angeles, California 97.2713:28.8 8:33:25.8P
Golden, Colorado 101.4213:47.3 8:33:44.2Pdiff
Phoenix, Arizona 101.6713:48.4 8:33:45.4Pdiff
Duluth, Minnesota 101.8513:49.2 8:33:46.2Pdiff
Albuquerque, New Mexico 103.9113:58.3 8:33:55.3Pdiff
Wichita, Kansas 106.9514:11.8 8:34:08.8Pdiff
Ottawa, Canada 107.9614:16.3 8:34:13.3Pdiff
St. Louis, Missouri 109.4314:22.8 8:34:19.8Pdiff
Bangor, Maine 109.8214:24.6 8:34:21.6Pdiff
Boston, Massachusetts 111.8514:33.6 8:34:30.6Pdiff
New York, New York 112.8214:37.9 8:34:34.9Pdiff
Philadelphia, Pennsylvania 113.2814:39.9 8:34:36.9Pdiff
Washington, D.C. 113.8014:42.2 8:34:39.2Pdiff
Knoxville, Tennessee 113.8214:42.3 8:34:39.3Pdiff
Brownsville, Texas 115.9714:51.8 8:34:48.8Pdiff
Mexico City, Mexico 119.6315:08.1 8:35:05.1Pdiff
Miami, Florida 124.8015:31.0 8:35:28.0Pdiff
San Juan, Puerto Rico 135.9616:20.6 8:36:17.6Pdiff
Palmer Station, Antarctica 136.8316:24.4 8:36:21.4Pdiff
Lima, Peru 156.9419:52.5 8:39:49.5PKPdf

Travel Time Information and Calculator

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