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Earthquake Hazards Program

Magnitude 3.7 COLORADO

Tuesday, August 18, 2009 at 02:50:17 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
Golden, Colorado 2.05 0:35.1 2:50:52.1Pn
Albuquerque, New Mexico 5.64 1:24.4 2:51:41.4Pn
Phoenix, Arizona 8.06 1:57.7 2:52:14.7Pn
Wichita, Kansas 8.47 2:03.3 2:52:20.3Pn
Los Angeles, California 10.75 2:34.6 2:52:51.6Pn
San Francisco, California 11.87 2:49.9 2:53:06.9Pn
Duluth, Minnesota 12.69 3:01.1 2:53:18.1Pn
Seattle, Washington 12.73 3:01.6 2:53:18.6Pn
St. Louis, Missouri 13.50 3:12.2 2:53:29.2Pn
Brownsville, Texas 16.96 3:58.0 2:54:15.0Pn
Knoxville, Tennessee 18.20 4:13.4 2:54:30.4Pn
Mexico City, Mexico 22.38 4:59.1 2:55:16.1P
Washington, D.C. 23.49 5:10.7 2:55:27.7P
Ottawa, Canada 23.67 5:12.6 2:55:29.6P
Philadelphia, Pennsylvania 24.66 5:21.6 2:55:38.6P
New York, New York 25.37 5:28.1 2:55:45.1P
Miami, Florida 27.18 5:44.4 2:56:01.4P
Boston, Massachusetts 27.26 5:45.1 2:56:02.1P
Bangor, Maine 28.62 5:57.2 2:56:14.2P
Anchorage, Alaska 32.83 6:34.3 2:56:51.3P
San Juan, Puerto Rico 41.79 7:50.3 2:58:07.3P
Honolulu, Hawaii 46.52 8:28.2 2:58:45.2P
Lima, Peru 59.6310:04.9 3:00:21.9P
Bergen, Norway 65.3910:43.5 3:01:00.5P
London, England 68.6311:04.1 3:01:21.1P
Moscow, Russia 79.5212:07.8 3:02:24.8P
Rome, Italy 81.5412:18.6 3:02:35.6P
Tokyo, Japan 82.0612:21.4 3:02:38.4P
Beijing, China 90.3313:02.1 3:03:19.1P
Agana, Guam 94.2713:20.2 3:03:37.2P
Wellington, New Zealand 107.6914:20.1 3:04:37.1Pdiff
Kathmandu, Nepal 110.9314:34.4 3:04:51.4Pdiff
Palmer Station, Antarctica 112.9914:43.6 3:05:00.6Pdiff
Brisbane, Australia 114.1314:48.6 3:05:05.6Pdiff
Nairobi, Kenya 129.2615:55.8 3:06:12.8Pdiff

Travel Time Information and Calculator

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


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