Historic Earthquakes

Magnitude 6.6 Northern Iran
1998 March 14 19:40:02 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
Kathmandu, Nepal 24.36 5:18.219:45:20.2P
Moscow, Russia 29.23 6:02.119:46:04.1P
Nairobi, Kenya 37.00 7:09.719:47:11.7P
Rome, Italy 37.91 7:17.419:47:19.4P
Bergen, Norway 45.81 8:22.019:48:24.0P
London, England 47.25 8:33.319:48:35.3P
Beijing, China 48.38 8:42.119:48:44.1P
Tokyo, Japan 67.2710:54.919:50:56.9P
Agana, Guam 80.9412:14.819:52:16.8P
Anchorage, Alaska 86.2512:42.019:52:44.0P
Bangor, Maine 90.8513:03.819:53:05.8P
Ottawa, Canada 93.6613:16.819:53:18.8P
Boston, Massachusetts 93.8013:17.419:53:19.4P
New York, New York 96.4713:29.519:53:31.5P
Philadelphia, Pennsylvania 97.6213:34.719:53:36.7P
Duluth, Minnesota 98.7413:39.619:53:41.6Pdiff
Washington, D.C. 99.3513:42.419:53:44.4Pdiff
Seattle, Washington 102.4213:56.019:53:58.0Pdiff
St. Louis, Missouri 105.2614:08.619:54:10.6Pdiff
Knoxville, Tennessee 105.5214:09.819:54:11.8Pdiff
San Juan, Puerto Rico 107.4014:18.119:54:20.1Pdiff
Brisbane, Australia 107.5714:18.919:54:20.9Pdiff
Wichita, Kansas 108.4914:23.019:54:25.0Pdiff
Golden, Colorado 108.6514:23.719:54:25.6Pdiff
Miami, Florida 111.2514:35.219:54:37.2Pdiff
San Francisco, California 112.4414:40.519:54:42.5Pdiff
Albuquerque, New Mexico 113.4414:44.919:54:46.9Pdiff
Los Angeles, California 116.0314:56.419:54:58.4Pdiff
Honolulu, Hawaii 118.5315:07.519:55:09.5Pdiff
Brownsville, Texas 119.3815:11.319:55:13.3Pdiff
Mexico City, Mexico 125.8915:40.219:55:42.2Pdiff
Wellington, New Zealand 128.8015:53.119:55:55.1Pdiff
Palmer Station, Antarctica 129.4215:55.919:55:57.9Pdiff
Lima, Peru 134.3816:17.919:56:19.9Pdiff