Historic Earthquakes

Magnitude 7.5 LOYALTY ISLANDS REGION
1998 January 04 06:11:58 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
Brisbane, Australia 17.05 3:52.1 6:15:50.1Pn
Wellington, New Zealand 19.21 4:15.9 6:16:13.9P
Agana, Guam 43.83 7:55.9 6:19:53.9P
Honolulu, Hawaii 52.99 9:06.3 6:21:04.2P
Tokyo, Japan 64.7610:27.7 6:22:25.7P
Beijing, China 80.0511:58.6 6:23:56.6P
Palmer Station, Antarctica 81.5812:06.7 6:24:04.7P
San Francisco, California 86.5312:31.8 6:24:29.8P
Los Angeles, California 87.5912:36.9 6:24:34.9P
Anchorage, Alaska 89.0112:43.5 6:24:41.5P
Seattle, Washington 91.8512:56.8 6:24:54.8P
Kathmandu, Nepal 96.3913:17.5 6:25:15.5P
Albuquerque, New Mexico 96.6713:18.7 6:25:16.7P
Mexico City, Mexico 97.0913:20.6 6:25:18.6P
Golden, Colorado 99.4513:31.1 6:25:29.1Pdiff
Brownsville, Texas 100.7813:37.0 6:25:35.0Pdiff
Wichita, Kansas 104.6313:54.1 6:25:52.1Pdiff
Lima, Peru 105.1513:56.4 6:25:54.4Pdiff
St. Louis, Missouri 110.2514:19.0 6:26:17.0Pdiff
Duluth, Minnesota 110.5314:20.3 6:26:18.3Pdiff
Knoxville, Tennessee 113.6614:34.2 6:26:32.2Pdiff
Miami, Florida 115.7014:43.2 6:26:41.2Pdiff
Washington, D.C. 120.4815:04.4 6:27:02.4Pdiff
Ottawa, Canada 121.7715:10.2 6:27:08.2Pdiff
Philadelphia, Pennsylvania 122.0015:11.2 6:27:09.2Pdiff
New York, New York 122.9315:15.3 6:27:13.3Pdiff
Boston, Massachusetts 125.1415:25.1 6:27:23.1Pdiff
San Juan, Puerto Rico 126.6615:31.9 6:27:29.9Pdiff
Bangor, Maine 126.7115:32.1 6:27:30.1Pdiff
Nairobi, Kenya 129.4715:44.4 6:27:42.4Pdiff
Moscow, Russia 132.0415:55.8 6:27:53.8Pdiff
Bergen, Norway 140.6216:33.9 6:28:31.9Pdiff
London, England 150.0419:33.1 6:31:31.1PKPdf
Rome, Italy 153.3819:38.1 6:31:36.1PKPdf