Analysis Quality

Each Seismo-Watch e-mail Earthquake Alert Bulletin comes with an Analysis Quality tag. According to the National Earthquake Information Service "the quality refers to the precision with which the earthquake location has been computed."

"A and B qualities mean that the location is quite reliable while a C quality can be pretty uncertain. Bad locations will generally not be reported. No quality implies a location held to the coordinates of another organization (e.g., a regional network with better coverage of an event)."

Also, the Regional Location is an automatically generated name and can be misleading for earthquakes near region boundaries.

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