Since 1964, the USGS/ANSS ComCat catalog records more than 10 earthquakes greater than or equal to magnitude 6.4. Tuesday’s magnitude-6.4 event is in yellow. The Gorda Plate region is by far the largest producer of moderate and large earthquakes in the conterminous US. Credit: Chris Rollins, GNS Science

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Since 1964, the USGS/ANSS ComCat catalog records more than 10 earthquakes greater than or equal to magnitude 6.4. Tuesday’s magnitude-6.4 event is in yellow. The Gorda Plate region is by far the largest producer of moderate and large earthquakes in the conterminous US. Credit: Chris Rollins, GNS Science

Since 1964, the USGS/ANSS ComCat catalog records more than 10 earthquakes greater than or equal to magnitude 6.4. Tuesday’s magnitude-6.4 event is in yellow. The Gorda Plate region is by far the largest producer of moderate and large earthquakes in the conterminous US. Credit: Chris Rollins, GNS Science

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