Theoretical P-Wave Travel Times
Magnitude 6.4 COSTA RICA
Saturday, November 20, 2004 at 08:07:22 UTC
Preliminary Earthquake Report
U.S. Geological Survey, National Earthquake Information Center
World Data Center for Seismology, Denver
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).
| City | Distance (degrees) |
Travel Time (min:secs) |
Arrival Time UTC |
Phase |
|---|---|---|---|---|
| Miami, Florida | 16.55 | 3:50.5 | 8:11:13.5 | Pn |
| Mexico City, Mexico | 17.48 | 4:02.2 | 8:11:25.2 | Pn |
| San Juan, Puerto Rico | 19.62 | 4:26.7 | 8:11:49.7 | P |
| Brownsville, Texas | 20.57 | 4:37.1 | 8:12:00.1 | P |
| Lima, Peru | 22.66 | 4:59.5 | 8:12:22.5 | P |
| Knoxville, Tennessee | 26.27 | 5:33.5 | 8:12:56.5 | P |
| St. Louis, Missouri | 29.48 | 6:02.2 | 8:13:25.2 | P |
| Washington, D.C. | 29.89 | 6:05.9 | 8:13:28.9 | P |
| Wichita, Kansas | 30.47 | 6:11.0 | 8:13:34.0 | P |
| Philadephia, Pennsylvania | 31.30 | 6:18.3 | 8:13:41.3 | P |
| New York, New York | 32.30 | 6:27.1 | 8:13:50.1 | P |
| Albuquerque, New Mexico | 32.63 | 6:30.0 | 8:13:53.0 | P |
| Boston, Massachusetts | 34.60 | 6:47.1 | 8:14:10.1 | P |
| Golden, Colorado | 35.41 | 6:54.0 | 8:14:17.0 | P |
| Ottawa, Canada | 36.45 | 7:02.9 | 8:14:25.9 | P |
| Bangor, Maine | 37.54 | 7:12.2 | 8:14:35.2 | P |
| Duluth, Minnesota | 37.67 | 7:13.2 | 8:14:36.2 | P |
| Los Angeles, California | 39.60 | 7:29.4 | 8:14:52.4 | P |
| San Francisco, California | 44.38 | 8:08.5 | 8:15:31.5 | P |
| Seattle, Washington | 49.83 | 8:51.0 | 8:16:14.0 | P |
| Anchorage, Alaska | 70.07 | 11:10.1 | 8:18:33.2 | P |
| Honolulu, Hawaii | 71.42 | 11:18.4 | 8:18:41.4 | P |
| Palmer Station, Antarctica | 78.49 | 11:59.2 | 8:19:22.2 | P |
| London, England | 78.87 | 12:01.3 | 8:19:24.3 | P |
| Bergen, Norway | 81.52 | 12:15.6 | 8:19:38.6 | P |
| Rome, Italy | 88.62 | 12:51.1 | 8:20:14.1 | P |
| Moscow, Russia | 99.12 | 13:39.0 | 8:21:02.0 | Pdiff |
| Wellington, New Zealand | 104.52 | 14:03.0 | 8:21:26.0 | Pdiff |
| Tokyo, Japan | 118.85 | 15:06.6 | 8:22:29.6 | Pdiff |
| Nairobi, Kenya | 120.79 | 15:15.2 | 8:22:38.2 | Pdiff |
| Brisbane, Australia | 123.41 | 15:26.8 | 8:22:49.8 | Pdiff |
| Agana, Guam | 126.30 | 15:39.7 | 8:23:02.7 | Pdiff |
| Beijing, China | 127.19 | 15:43.6 | 8:23:06.6 | Pdiff |
| Kathmandu, Nepal | 141.59 | 16:47.6 | 8:24:10.6 | Pdiff |
Travel Time Information and Calculator
