From the epicenter of the 2014 magnitude 6.0 Napa earthquake (red star), the P-wave (yellow circle) raced ahead of the more damaging S-wave (red circle). The blind zone, for which no warning was possible, is shown by the solid gray circle with a red slash. Small green circles show seismic stations. Credit: Incorporated Research Institutions for Seismology (IRIS).

Posted on by

From the epicenter of the 2014 magnitude 6.0 Napa earthquake (red star), the P-wave (yellow circle) raced ahead of the more damaging S-wave (red circle). The blind zone, for which no warning was possible, is shown by the solid gray circle with a red slash. Small green circles show seismic stations. Credit: Incorporated Research Institutions for Seismology (IRIS).

Follow her
Latest posts by Alka Tripathy-Lang, Ph.D. (see all)