Theoretical P-Wave Travel Times

Magnitude 4.3 OFF THE COAST OF NORTHERN CALIFORNIA
Wednesday, February 20, 2013 at 13:16:09 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
San Francisco, California 4.45 1:07.512:23:08.5Pn
Seattle, Washington 8.13 1:58.012:23:59.0Pn
Los Angeles, California 9.45 2:16.112:24:17.1Pn
Phoenix, Arizona 13.83 3:16.012:25:17.0Pn
Golden, Colorado 16.72 3:54.312:25:55.3Pn
Albuquerque, New Mexico 16.98 3:57.512:25:58.5Pn
Wichita, Kansas 23.15 5:06.512:27:07.5P
Anchorage, Alaska 25.10 5:24.812:27:25.8P
Duluth, Minnesota 25.89 5:32.012:27:33.0P
St. Louis, Missouri 28.29 5:53.612:27:54.6P
Brownsville, Texas 28.49 5:55.312:27:56.3P
Mexico City, Mexico 31.73 6:24.012:28:25.0P
Honolulu, Hawaii 32.34 6:29.312:28:30.3P
Knoxville, Tennessee 32.99 6:35.012:28:36.0P
Ottawa, Canada 37.39 7:12.912:29:13.9P
Washington, D.C. 38.11 7:18.912:29:19.9P
Philadelphia, Pennsylvania 39.16 7:27.712:29:28.7P
New York, New York 39.77 7:32.812:29:33.8P
Boston, Massachusetts 41.39 7:46.212:29:47.2P
Miami, Florida 41.40 7:46.312:29:47.3P
Bangor, Maine 42.32 7:53.812:29:54.8P
San Juan, Puerto Rico 56.23 9:40.212:31:41.2P
Lima, Peru 69.7711:10.412:33:11.4P
Tokyo, Japan 70.1311:12.612:33:13.6P
Bergen, Norway 72.2611:25.512:33:26.5P
London, England 77.4311:55.512:33:56.5P
Agana, Guam 80.0712:09.912:34:10.9P
Beijing, China 81.3612:16.912:34:17.9P
Moscow, Russia 83.3412:27.212:34:28.2P
Rome, Italy 90.2513:00.912:35:01.9P
Wellington, New Zealand 96.9513:31.512:35:32.5P
Brisbane, Australia 100.2713:46.312:35:47.3Pdiff
Kathmandu, Nepal 105.8714:11.212:36:12.2Pdiff
Palmer Station, Antarctica 117.7215:03.712:37:04.7Pdiff
Nairobi, Kenya 138.3916:35.512:38:36.5Pdiff

Travel Time Information and Calculator

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