Theoretical P-Wave Travel Times

Magnitude 4.6 SOUTHERN TEXAS
Thursday, October 20, 2011 at 12:24:40 UTC

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
Travel Time
Arrival Time
Brownsville, Texas 2.96 0:47.612:25:27.6Pn
Wichita, Kansas 8.96 2:10.012:26:50.0Pn
Mexico City, Mexico 9.40 2:16.012:26:56.0Pn
Albuquerque, New Mexico 9.54 2:18.012:26:58.0Pn
St. Louis, Missouri 11.82 2:49.212:27:29.2Pn
Golden, Colorado 12.37 2:56.712:27:36.7Pn
Phoenix, Arizona 12.79 3:02.512:27:42.5Pn
Knoxville, Tennessee 13.07 3:06.312:27:46.3Pn
Miami, Florida 16.26 3:49.112:28:29.1Pn
Los Angeles, California 17.92 4:09.912:28:49.9Pn
Duluth, Minnesota 18.51 4:17.112:28:57.1P
Washington, D.C. 20.17 4:35.312:29:15.3P
Philadelphia, Pennsylvania 21.92 4:54.212:29:34.2P
San Francisco, California 22.12 4:56.312:29:36.3P
New York, New York 23.04 5:06.012:29:46.0P
Ottawa, Canada 24.26 5:18.012:29:58.0P
Boston, Massachusetts 25.69 5:31.012:30:11.0P
Seattle, Washington 26.63 5:39.512:30:19.5P
Bangor, Maine 28.23 5:53.812:30:33.8P
San Juan, Puerto Rico 30.99 6:18.312:30:58.2P
Lima, Peru 45.49 8:20.112:33:00.1P
Anchorage, Alaska 46.96 8:31.712:33:11.7P
Honolulu, Hawaii 54.11 9:25.712:34:05.7P
Bergen, Norway 71.6811:22.812:36:02.8P
London, England 72.6711:28.712:36:08.8P
Rome, Italy 84.9712:36.312:37:16.3P
Moscow, Russia 87.7512:49.912:37:29.9P
Tokyo, Japan 95.8313:27.312:38:07.3P
Palmer Station, Antarctica 99.6013:44.212:38:24.2Pdiff
Beijing, China 104.4414:05.612:38:45.6Pdiff
Agana, Guam 106.1414:13.212:38:53.2Pdiff
Wellington, New Zealand 106.3314:14.012:38:54.0Pdiff
Brisbane, Australia 118.1715:06.612:39:46.6Pdiff
Kathmandu, Nepal 123.7215:31.212:40:11.2Pdiff
Nairobi, Kenya 129.1215:55.212:40:35.2Pdiff

Travel Time Information and Calculator

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