Historic Earthquakes

Magnitude 7.0 Near North Coast of New Guinea, P.N.G.
1998 July 17 08:49:13 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
Agana, Guam 16.56 3:52.2 8:53:05.2Pn
Brisbane, Australia 26.60 5:38.4 8:54:51.4P
Tokyo, Japan 38.47 7:22.0 8:56:35.0P
Wellington, New Zealand 48.24 8:40.8 8:57:53.8P
Beijing, China 48.65 8:44.0 8:57:57.0P
Kathmandu, Nepal 62.3710:22.8 8:59:35.8P
Honolulu, Hawaii 63.6710:31.4 8:59:44.4P
Anchorage, Alaska 82.2512:21.6 9:01:34.6P
Seattle, Washington 96.0613:27.5 9:02:40.5P
San Francisco, California 96.2813:28.5 9:02:41.5P
Los Angeles, California 99.8013:44.2 9:02:57.2Pdiff
Moscow, Russia 100.4313:47.0 9:02:60.0Pdiff
Nairobi, Kenya 105.0014:07.3 9:03:20.3Pdiff
Palmer Station, Antarctica 107.1114:16.6 9:03:29.6Pdiff
Albuquerque, New Mexico 109.2014:25.9 9:03:38.9Pdiff
Golden, Colorado 109.3914:26.8 9:03:39.8Pdiff
Bergen, Norway 113.8914:46.7 9:03:59.7Pdiff
Wichita, Kansas 115.8414:55.4 9:04:08.4Pdiff
Duluth, Minnesota 116.1114:56.6 9:04:09.6Pdiff
Mexico City, Mexico 118.2115:05.9 9:04:18.9Pdiff
Brownsville, Texas 118.6815:08.0 9:04:21.0Pdiff
Rome, Italy 120.5115:16.1 9:04:29.1Pdiff
St. Louis, Missouri 120.7615:17.2 9:04:30.2Pdiff
London, England 122.1815:23.5 9:04:36.5Pdiff
Knoxville, Tennessee 125.5715:38.6 9:04:51.6Pdiff
Ottawa, Canada 126.4015:42.3 9:04:55.3Pdiff
Washington, D.C. 129.6515:56.7 9:05:09.7Pdiff
Philadelphia, Pennsylvania 130.1915:59.1 9:05:12.1Pdiff
Bangor, Maine 130.3515:59.8 9:05:12.8Pdiff
New York, New York 130.4016:00.0 9:05:13.0Pdiff
Boston, Massachusetts 130.9616:02.5 9:05:15.5Pdiff
Miami, Florida 133.6616:14.5 9:05:27.5Pdiff
Lima, Peru 138.4816:35.9 9:05:48.9Pdiff
San Juan, Puerto Rico 148.5019:42.7 9:08:55.7PKPdf