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Earthquake Hazards Program

Theoretical P-Wave Travel Times

Magnitude 4.2 ILLINOIS
2004 June 28 06:10:51 UTC

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

Theoretical P-wave Travel Times

Theoretical P-wave Travel Times

These maps show 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
St. Louis, Missouri 2.94 0:47.4 6:11:38.4Pn
Duluth, Minnesota 5.79 1:26.5 6:12:17.5Pn
Knoxville, Tennessee 6.23 1:32.6 6:12:23.6Pn
Wichita, Kansas 7.44 1:49.2 6:12:40.2Pn
Washington, D.C. 9.47 2:17.0 6:13:08.0Pn
Ottawa, Canada 10.41 2:30.0 6:13:21.0Pn
Philadephia, Pennsylvania 10.58 2:32.2 6:13:23.2Pn
New York, New York 11.31 2:42.2 6:13:33.2Pn
Golden, Colorado 12.47 2:58.1 6:13:49.1Pn
Boston, Massachusetts 13.35 3:10.1 6:14:01.1Pn
Bangor, Maine 15.11 3:34.2 6:14:25.2Pn
Albuquerque, New Mexico 15.26 3:36.1 6:14:27.1Pn
Brownsville, Texas 17.04 3:59.0 6:14:50.0Pn
Miami, Florida 17.24 4:01.4 6:14:52.4Pn
Mexico City, Mexico 23.62 5:12.0 6:16:03.0P
Los Angeles, California 24.23 5:17.7 6:16:08.7P
Seattle, Washington 24.46 5:19.7 6:16:10.7P
San Francisco, California 25.95 5:33.3 6:16:24.3P
San Juan, Puerto Rico 30.06 6:10.1 6:17:01.1P
Anchorage, Alaska 41.10 7:44.6 6:18:35.6P
Lima, Peru 54.38 9:27.7 6:20:18.7P
Bergen, Norway 57.02 9:46.7 6:20:37.7P
London, England 58.36 9:56.1 6:20:47.1P
Honolulu, Hawaii 60.6110:11.6 6:21:02.6P
Rome, Italy 70.9111:18.2 6:22:09.2P
Moscow, Russia 73.1511:31.6 6:22:22.6P
Tokyo, Japan 91.2313:06.2 6:23:57.2P
Beijing, China 95.8113:27.2 6:24:18.2P
Agana, Guam 106.2914:13.9 6:25:04.9Pdiff
Palmer Station, Antarctica 110.5014:32.5 6:25:23.5Pdiff
Kathmandu, Nepal 111.0114:34.8 6:25:25.8Pdiff
Nairobi, Kenya 117.0115:01.5 6:25:52.5Pdiff
Wellington, New Zealand 119.6815:13.3 6:26:04.3Pdiff
Brisbane, Australia 128.0915:50.6 6:26:41.6Pdiff

 


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