Theoretical P-Wave Travel Times

Magnitude 6.5 OFFSHORE NORTHERN CALIFORNIA
2010 January 10 00:27:39 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 3.37 0:52.0 0:28:31.0Pn
Seattle, Washington 7.32 1:46.2 0:29:25.2Pn
Los Angeles, California 8.35 2:00.3 0:29:39.3Pn
Phoenix, Arizona 12.36 2:55.3 0:30:34.3Pn
Golden, Colorado 14.90 3:29.9 0:31:08.9Pn
Albuquerque, New Mexico 15.28 3:35.0 0:31:14.0Pn
Wichita, Kansas 21.34 4:46.3 0:32:25.3P
Duluth, Minnesota 24.15 5:15.2 0:32:54.2P
Anchorage, Alaska 25.70 5:29.3 0:33:08.3P
St. Louis, Missouri 26.47 5:36.3 0:33:15.3P
Brownsville, Texas 26.93 5:40.4 0:33:19.4P
Mexico City, Mexico 30.40 6:11.3 0:33:50.3P
Knoxville, Tennessee 31.16 6:18.0 0:33:57.0P
Honolulu, Hawaii 34.08 6:43.5 0:34:22.5P
Ottawa, Canada 35.64 6:57.0 0:34:36.0P
Washington, D.C. 36.29 7:02.5 0:34:41.5P
Philadelphia, Pennsylvania 37.35 7:11.5 0:34:50.5P
New York, New York 37.97 7:16.8 0:34:55.8P
Boston, Massachusetts 39.61 7:30.5 0:35:09.5P
Miami, Florida 39.64 7:30.8 0:35:09.8P
Bangor, Maine 40.58 7:38.6 0:35:17.6P
San Juan, Puerto Rico 54.45 9:26.4 0:37:05.4P
Lima, Peru 68.5011:01.5 0:38:40.5P
Bergen, Norway 71.3111:18.7 0:38:57.7P
Tokyo, Japan 71.5511:20.2 0:38:59.2P
London, England 76.2711:47.9 0:39:26.9P
Agana, Guam 81.8012:18.1 0:39:57.1P
Beijing, China 82.4112:21.3 0:40:00.3P
Moscow, Russia 82.7912:23.3 0:40:02.3P
Rome, Italy 89.1312:54.6 0:40:33.6P
Wellington, New Zealand 98.3213:36.6 0:41:15.6P
Brisbane, Australia 102.0113:52.9 0:41:31.9Pdiff
Kathmandu, Nepal 106.5114:12.9 0:41:51.9Pdiff
Palmer Station, Antarctica 117.2715:00.7 0:42:39.7Pdiff
Nairobi, Kenya 137.3616:29.8 0:44:08.8Pdiff

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