Theoretical P-Wave Travel Times

Magnitude 5.6 NORTHERN CALIFORNIA
2012 February 13 21:07:02 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
(degrees)
Travel Time
(min:secs)
Arrival Time
UTC
Phase
San Francisco, California 3.54 0:52.621:07:54.6Pn
Seattle, Washington 6.74 1:36.521:08:38.5Pn
Los Angeles, California 8.35 1:58.721:09:00.7Pn
Phoenix, Arizona 12.10 2:50.021:09:52.0Pn
Golden, Colorado 14.25 3:19.421:10:21.4Pn
Albuquerque, New Mexico 14.81 3:27.121:10:29.1Pn
Wichita, Kansas 20.70 4:37.421:11:39.4P
Duluth, Minnesota 23.37 5:05.821:12:07.8P
Anchorage, Alaska 25.59 5:26.121:12:28.1P
St. Louis, Missouri 25.78 5:27.821:12:29.8P
Brownsville, Texas 26.56 5:34.921:12:36.9P
Mexico City, Mexico 30.18 6:07.121:13:09.1P
Knoxville, Tennessee 30.50 6:09.921:13:11.9P
Honolulu, Hawaii 34.86 6:48.021:13:50.0P
Ottawa, Canada 34.86 6:48.021:13:50.0P
Washington, D.C. 35.57 6:54.121:13:56.1P
Philadelphia, Pennsylvania 36.61 7:03.021:14:05.0P
New York, New York 37.22 7:08.221:14:10.2P
Boston, Massachusetts 38.85 7:21.821:14:23.8P
Miami, Florida 39.09 7:23.821:14:25.8P
Bangor, Maine 39.80 7:29.821:14:31.8P
San Juan, Puerto Rico 53.87 9:19.821:16:21.8P
Lima, Peru 68.3210:57.921:17:59.9P
Bergen, Norway 70.6111:12.121:18:14.1P
Tokyo, Japan 71.8511:19.521:18:21.5P
London, England 75.5311:41.121:18:43.1P
Moscow, Russia 82.2112:17.821:19:19.8P
Agana, Guam 82.3412:18.521:19:20.5P
Beijing, China 82.4912:19.321:19:21.2P
Rome, Italy 88.3912:48.621:19:50.6P
Wellington, New Zealand 99.1113:37.521:20:39.5Pdiff
Brisbane, Australia 102.7913:53.921:20:55.9Pdiff
Kathmandu, Nepal 106.3714:09.821:21:11.8Pdiff
Palmer Station, Antarctica 117.4814:59.121:22:01.1Pdiff
Nairobi, Kenya 136.6316:24.121:23:26.1Pdiff

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