Historic Earthquakes: Travel Times

Magnitude 6.6 UNIMAK ISLAND REGION, ALASKA
2003 February 19 03:32:36 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
Anchorage, Alaska 11.00 2:38.3 3:35:15.3Pn
Seattle, Washington 27.06 5:43.7 3:38:20.7P
Honolulu, Hawaii 32.59 6:32.6 3:39:09.6P
San Francisco, California 32.85 6:34.9 3:39:11.9P
Los Angeles, California 37.86 7:18.0 3:39:55.0P
Golden, Colorado 41.79 7:50.7 3:40:27.7P
Tokyo, Japan 42.30 7:54.9 3:40:31.9P
Albuquerque, New Mexico 44.02 8:08.8 3:40:45.8P
Duluth, Minnesota 45.03 8:16.8 3:40:53.8P
Wichita, Kansas 47.74 8:38.1 3:41:15.1P
St. Louis, Missouri 51.27 9:05.1 3:41:42.1P
Beijing, China 53.11 9:18.8 3:41:55.8P
Ottawa, Canada 54.68 9:30.3 3:42:07.3P
Brownsville, Texas 56.07 9:40.3 3:42:17.3P
Knoxville, Tennessee 56.07 9:40.3 3:42:17.3P
Agana, Guam 56.40 9:42.6 3:42:19.6P
Washington, D.C. 58.54 9:57.7 3:42:34.7P
Bangor, Maine 58.63 9:58.4 3:42:35.4P
Philadelphia, Pennsylvania 58.80 9:59.5 3:42:36.5P
New York, New York 58.8710:00.0 3:42:37.0P
Boston, Massachusetts 59.2310:02.6 3:42:39.6P
Mexico City, Mexico 60.0210:08.0 3:42:45.0P
Bergen, Norway 66.1410:48.7 3:43:25.7P
Miami, Florida 66.4410:50.7 3:43:27.7P
Moscow, Russia 69.5411:10.2 3:43:47.2P
London, England 74.5111:40.0 3:44:17.0P
Kathmandu, Nepal 79.1212:06.0 3:44:43.0P
San Juan, Puerto Rico 80.2212:12.0 3:44:49.0P
Rome, Italy 84.9212:36.4 3:45:13.4P
Brisbane, Australia 88.7012:54.8 3:45:31.8P
Wellington, New Zealand 96.1113:29.0 3:46:06.0P
Lima, Peru 98.1413:38.1 3:46:15.1P
Nairobi, Kenya 124.9915:37.2 3:48:14.2Pdiff
Palmer Station, Antarctica 141.5816:50.9 3:49:27.9Pdiff