Theoretical P-Wave Travel Times

Magnitude 7.7 HAIDA GWAII, CANADA
Sunday, October 28, 2012 at 03:04:10 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
Seattle, Washington 7.91 1:54.2 3:06:04.2Pn
Anchorage, Alaska 12.91 3:02.5 3:07:12.5Pn
San Francisco, California 16.40 3:49.2 3:07:59.2Pn
Los Angeles, California 21.12 4:43.8 3:08:53.8P
Golden, Colorado 22.45 4:58.0 3:09:08.0P
Phoenix, Arizona 24.00 5:13.7 3:09:23.7P
Albuquerque, New Mexico 25.18 5:24.4 3:09:34.4P
Duluth, Minnesota 26.13 5:33.0 3:09:43.0P
Wichita, Kansas 28.27 5:52.2 3:10:02.2P
St. Louis, Missouri 31.85 6:23.9 3:10:33.9P
Knoxville, Tennessee 36.69 7:05.7 3:11:15.7P
Ottawa, Canada 36.70 7:05.9 3:11:15.9P
Honolulu, Hawaii 37.19 7:10.0 3:11:20.0P
Brownsville, Texas 37.21 7:10.2 3:11:20.2P
Washington, D.C. 39.71 7:31.2 3:11:41.2P
Philadelphia, Pennsylvania 40.19 7:35.1 3:11:45.1P
New York, New York 40.42 7:37.1 3:11:47.1P
Bangor, Maine 41.15 7:43.1 3:11:53.1P
Boston, Massachusetts 41.21 7:43.6 3:11:53.6P
Mexico City, Mexico 41.87 7:49.0 3:11:59.0P
Miami, Florida 46.96 8:29.7 3:12:39.7P
San Juan, Puerto Rico 60.8810:11.5 3:14:21.5P
Tokyo, Japan 61.6110:16.4 3:14:26.4P
Bergen, Norway 62.1210:19.9 3:14:29.9P
London, England 68.4811:01.1 3:15:11.1P
Beijing, China 70.4111:13.1 3:15:23.1P
Moscow, Russia 71.5211:19.8 3:15:29.8P
Agana, Guam 75.3711:42.5 3:15:52.5P
Lima, Peru 79.8312:07.4 3:16:17.4P
Rome, Italy 80.8512:12.9 3:16:22.9P
Kathmandu, Nepal 93.5413:14.8 3:17:24.8P
Brisbane, Australia 103.0413:57.3 3:18:07.3Pdiff
Wellington, New Zealand 104.3714:03.2 3:18:13.2Pdiff
Nairobi, Kenya 127.8515:47.4 3:19:57.4Pdiff
Palmer Station, Antarctica 130.3515:58.5 3:20:08.5Pdiff

Travel Time Information and Calculator

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