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Station Data and Earthquake Catalogs near the Mendocino Triple Junction, Northern California, 2021-12-01 to 2023-06-01: 20 December 2021 Mw 6.1 and 6.0 Petrolia, and 20 December 2022 Mw 6.4 Ferndale earthquake sequences

Published by U.S. Geological Survey | Department of the Interior | Metadata Last Checked: September 08, 2025 | Last Modified: 20240205
Supplemental Material: Distinct yet adjacent earthquake sequences near the Mendocino Triple Junction: 20 December 2021 Mw 6.1 and 6.0 Petrolia, and 20 December 2022 Mw 6.4 Ferndale Data Sets S0-S4 with station data and earthquake catalogs in text format See README_Data_Supplement.pdf for more details

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