Feb. 9, 1971 'Sylmar' Earthquake
Instrumental Intensity Map
The so-called "Sylmar" earthquake of Tuesday, Feb. 9, 1971, was actually centered in Iron Canyon, in the Sand Canyon area of Canyon Country, as seen on this official instrumental intensity map. It struck at 6:00:41 a.m. and measured 6.7 on the Richter scale.
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