Historic Earthquakes: Travel Times

Magnitude 3.6 NEAR THE COAST OF MASSACHUSETTS
2003 July 22 11:41:15 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
Boston, Massachusetts 0.90 0:17.311:41:32.3Pg
Bangor, Maine 2.22 0:36.811:41:51.8Pn
New York, New York 3.62 0:56.011:42:11.0Pn
Philadelphia, Pennsylvania 4.79 1:12.011:42:27.0Pn
Ottawa, Canada 4.88 1:13.311:42:28.3Pn
Washington, D.C. 6.58 1:36.711:42:51.6Pn
Knoxville, Tennessee 13.55 3:12.111:44:27.1Pn
St. Louis, Missouri 15.87 3:43.311:44:58.3Pn
Duluth, Minnesota 16.21 3:47.711:45:02.7Pn
Miami, Florida 18.90 4:20.511:45:35.5P
Wichita, Kansas 21.39 4:47.611:46:02.6P
San Juan, Puerto Rico 24.43 5:18.611:46:33.6P
Golden, Colorado 26.50 5:37.411:46:52.4P
Brownsville, Texas 28.07 5:51.511:47:06.5P
Albuquerque, New Mexico 29.32 6:02.611:47:17.6P
Mexico City, Mexico 33.84 6:42.311:47:57.3P
Seattle, Washington 36.56 7:05.611:48:20.6P
Los Angeles, California 38.33 7:20.711:48:35.7P
San Francisco, California 39.76 7:32.611:48:47.6P
London, England 46.64 8:28.211:49:43.2P
Bergen, Norway 47.18 8:32.411:49:47.4P
Anchorage, Alaska 49.11 8:47.311:50:02.3P
Lima, Peru 54.97 9:31.011:50:46.0P
Rome, Italy 58.57 9:56.611:51:11.6P
Moscow, Russia 64.4510:36.411:51:51.4P
Honolulu, Hawaii 74.3011:37.411:52:52.4P
Tokyo, Japan 97.3513:33.111:54:48.1P
Beijing, China 97.5013:33.811:54:48.8P
Nairobi, Kenya 103.2113:59.211:55:14.2Pdiff
Kathmandu, Nepal 106.3014:12.911:55:27.9Pdiff
Palmer Station, Antarctica 110.3014:30.611:55:45.6Pdiff
Agana, Guam 115.5914:54.111:56:09.1Pdiff
Wellington, New Zealand 132.9216:11.011:57:26.0Pdiff
Brisbane, Australia 142.0916:51.711:58:06.8Pdiff