Special Event

Basic Information

Time of Occurrence (GMT): Monday June 23, 1997 at 19:13:27.03 Z
Time of Occurrence (PDT): Monday June 23, 1997 at 12:13:27.03 PM
Time of Occurrence (PST): Monday June 23, 1997 at 11:13:27.03 AM

Depth (km) 7.39
Magnitude (Mc) 4.9

Location 47.5988N 122.5740W
     5.5 km  NE of Bremerton
    16.1 km SSE of Poulsbo
    18.4 km   W of Seattle

Name of data file: 97062319131p

This is an automated web page produced after a significant earthquake to give essential information about the earthquake, its aftershocks, and previous earthquake activity in the region. Some of the information here will be updated as aftershocks occur.

Detailed Information and Graphics about the Earthquake

Our data base of earthquake hypocenters contains information from the 19th century to the present. Included are:

Foreshocks and Aftershocks

The following information will be updated as new aftershocks occur. Included are:

Earthquake Mechanism

If sufficient P-wave first motion data are available, a fault plane determination for the earthquake will be available in the form of

Preliminary Strong Motion Information

Related Information: Most Up-to-Date Local, National, and Global Earthquake Summaries

Preliminary Summary of the Public's Web Responses

As of June 26 we have received over 400 responses to a WEB based felt-report form. A preliminary summary of these responses will be updated as we receive more reports. Such information helps us to understand more about this earthquake as well as older, pre-instrumental events. A contour map shows the felt intensities estimated from these responses and averaged over zipcode areas.