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Earthquake Hazards Program

Magnitude 5.6 SAN FRANCISCO BAY AREA, CALIF.

2007 October 31 03:04:54 UTC

Theoretical P-Wave Travel Times

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 0.61 0:11.9 3:05:05.9Pg
Los Angeles, California 4.43 1:07.3 3:06:01.3Pn
Phoenix, Arizona 8.86 2:08.2 3:07:02.2Pn
Seattle, Washington 10.37 2:28.9 3:07:22.9Pn
Albuquerque, New Mexico 12.45 2:57.3 3:07:51.3Pn
Golden, Colorado 13.18 3:07.3 3:08:01.3Pn
Wichita, Kansas 19.37 4:25.9 3:09:19.9P
Brownsville, Texas 23.58 5:11.1 3:10:05.1P
Duluth, Minnesota 23.75 5:12.6 3:10:06.6P
St. Louis, Missouri 24.80 5:22.2 3:10:16.2P
Mexico City, Mexico 26.67 5:39.2 3:10:33.2P
Knoxville, Tennessee 29.29 6:02.5 3:10:56.5P
Anchorage, Alaska 29.61 6:05.4 3:10:59.4P
Washington, D.C. 34.95 6:52.1 3:11:46.1P
Honolulu, Hawaii 35.03 6:52.9 3:11:46.9P
Ottawa, Canada 35.05 6:53.0 3:11:47.0P
Philadephia, Pennsylvania 36.16 7:02.5 3:11:56.5P
New York, New York 36.88 7:08.7 3:12:02.7P
Miami, Florida 37.02 7:09.8 3:12:03.8P
Boston, Massachusetts 38.75 7:24.4 3:12:18.4P
Bangor, Maine 40.01 7:34.9 3:12:28.9P
San Juan, Puerto Rico 51.90 9:08.7 3:14:02.7P
Lima, Peru 64.7110:38.4 3:15:32.4P
Bergen, Norway 73.3511:32.1 3:16:26.1P
Tokyo, Japan 75.1811:42.8 3:16:36.8P
London, England 77.7911:57.6 3:16:51.6P
Agana, Guam 84.6612:34.0 3:17:28.0P
Moscow, Russia 85.5612:38.5 3:17:32.5P
Beijing, China 86.3212:42.3 3:17:36.3P
Rome, Italy 90.7213:03.2 3:17:57.2P
Wellington, New Zealand 97.4313:33.8 3:18:27.8P
Brisbane, Australia 102.6513:57.0 3:18:51.0Pdiff
Kathmandu, Nepal 110.4114:31.4 3:19:25.4Pdiff
Palmer Station, Antarctica 113.4514:44.9 3:19:38.9Pdiff
Nairobi, Kenya 138.9916:38.3 3:21:32.3Pdiff

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


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