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Earthquake Hazards Program


Tuesday, November 27, 2007 at 11:49:58 UTC

Theoretical P-Wave Travel Times

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
Travel Time
Arrival Time
Brisbane, Australia 18.52 4:12.811:54:13.8P
Agana, Guam 29.84 6:03.211:56:04.2P
Wellington, New Zealand 32.12 6:23.311:56:24.3P
Honolulu, Hawaii 50.75 8:55.611:58:56.6P
Tokyo, Japan 51.03 8:57.811:58:58.8P
Beijing, China 66.0610:42.612:00:43.6P
Anchorage, Alaska 81.2412:11.612:02:12.6P
Kathmandu, Nepal 83.6712:24.312:02:25.3P
San Francisco, California 85.4012:33.012:02:34.0P
Los Angeles, California 87.6212:43.812:02:44.8P
Seattle, Washington 88.5512:48.212:02:49.2P
Phoenix, Arizona 92.4913:06.512:03:07.5P
Palmer Station, Antarctica 94.7513:16.912:03:17.9P
Albuquerque, New Mexico 97.2113:28.012:03:29.0P
Golden, Colorado 98.9513:35.812:03:36.8Pdiff
Mexico City, Mexico 101.6713:47.812:03:48.8Pdiff
Brownsville, Texas 103.9513:57.912:03:58.9Pdiff
Wichita, Kansas 104.9314:02.312:04:03.3Pdiff
Duluth, Minnesota 108.6714:18.912:04:19.9Pdiff
St. Louis, Missouri 110.5114:27.012:04:28.0Pdiff
Knoxville, Tennessee 114.7114:45.712:04:46.7Pdiff
Lima, Peru 116.8614:55.312:04:56.3Pdiff
Moscow, Russia 118.0915:00.712:05:01.7Pdiff
Miami, Florida 119.5315:07.112:05:08.1Pdiff
Ottawa, Canada 120.1615:09.912:05:10.9Pdiff
Washington, D.C. 120.7315:12.412:05:13.4Pdiff
Philadephia, Pennsylvania 121.9315:17.712:05:18.7Pdiff
New York, New York 122.6015:20.712:05:21.7Pdiff
Boston, Massachusetts 124.2615:28.112:05:29.1Pdiff
Nairobi, Kenya 124.3015:28.312:05:29.3Pdiff
Bangor, Maine 125.0215:31.512:05:32.5Pdiff
Bergen, Norway 127.8215:43.912:05:44.9Pdiff
San Juan, Puerto Rico 132.8216:06.112:06:07.1Pdiff
London, England 137.1416:25.312:06:26.3Pdiff
Rome, Italy 139.3916:35.212:06:36.2Pdiff

Travel Time Information and Calculator

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

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