Theoretical P-Wave Travel Times

Magnitude 2.8 ALABAMA

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
Travel Time
Arrival Time
Knoxville, Tennessee 2.81 0:45.715:30:26.7Pn
St. Louis, Missouri 5.39 1:21.115:31:02.1Pn
Wichita, Kansas 9.01 2:10.815:31:51.8Pn
Washington, D.C. 9.76 2:21.115:32:02.1Pn
Miami, Florida 10.15 2:26.515:32:07.5Pn
Philadelphia, Pennsylvania 11.54 2:45.515:32:26.5Pn
Brownsville, Texas 11.80 2:49.015:32:30.0Pn
New York, New York 12.68 3:01.115:32:42.1Pn
Duluth, Minnesota 13.44 3:11.515:32:52.5Pn
Ottawa, Canada 14.65 3:28.015:33:09.0Pn
Boston, Massachusetts 15.38 3:37.815:33:18.8Pn
Golden, Colorado 15.46 3:38.915:33:19.9Pn
Albuquerque, New Mexico 15.95 3:45.215:33:26.2Pn
Mexico City, Mexico 17.77 4:08.215:33:49.2Pn
Bangor, Maine 18.07 4:11.915:33:52.9Pn
Phoenix, Arizona 20.57 4:39.715:34:20.7P
San Juan, Puerto Rico 24.34 5:18.815:34:59.8P
Los Angeles, California 25.58 5:30.115:35:11.1P
San Francisco, California 28.61 5:57.315:35:38.3P
Seattle, Washington 29.64 6:06.515:35:47.5P
Lima, Peru 46.68 8:29.715:38:10.7P
Anchorage, Alaska 47.90 8:39.215:38:20.2P
Bergen, Norway 62.5510:25.015:40:05.9P
Honolulu, Hawaii 62.6310:25.515:40:06.5P
London, England 62.7710:26.515:40:07.4P
Rome, Italy 74.8311:41.715:41:22.7P
Moscow, Russia 79.2812:06.715:41:47.7P
Tokyo, Japan 98.0513:37.515:43:18.5P
Palmer Station, Antarctica 102.7713:58.415:43:39.4Pdiff
Beijing, China 103.4314:01.315:43:42.3Pdiff
Agana, Guam 111.6814:37.915:44:18.9Pdiff
Wellington, New Zealand 116.7115:00.315:44:41.3Pdiff
Kathmandu, Nepal 118.4515:08.015:44:49.0Pdiff
Nairobi, Kenya 118.7115:09.115:44:50.1Pdiff
Brisbane, Australia 128.3115:51.815:45:32.8Pdiff

Travel Time Information and Calculator

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