On the day of the Sylmar earthquake that occurred 54 years ago, I commuted to college during my freshman year and learned that I didn't have to arrive for class for several hours to give the administrators adequate time to determine whether the school buildings had sustained any structural damage (they hadn't). Within a few weeks, the tremor had faded (more or less) into the background, and neither government officials nor the news media promoted climate change or global warming as being a causal factor.
-NW

The 1971 San Fernando Earthquake
California Department of Conservation
Earthquake summary
Date: Tue Feb 9, 1971
Time: 06:00:41 AM PST
Location: N34.42 W118.40: San Fernando
Magnitude: 6.6

On February 9, 1971 at 6:01 am PST, a devastating M6.6 earthquake struck the densely populated metropolitan area of Los Angeles, leaving death and destruction in its wake. The epicenter of the earthquake was in the vicinity of Magic Mountain, about six miles northeast of Sylmar, at a depth of about seven miles.

The shock was felt for 300 miles along the southern California coastal region and as far inland as Las Vegas, Nevada. The greatest damage was in the San Fernando area northwest of Los Angeles. The earthquake resulted in 65 deaths and more than 2,000 people injured. Property damage losses totaled more than half a billion dollars.

Hospitals were severely damaged; freeway interchanges collapsed; and a reservoir was in imminent danger of failure, forcing nearly 80,000 residents who lived downstream to evacuate. Movement along the fault reached the surface during the earthquake and extended 12.5 miles from the San Fernando-Sylmar area in the northern San Fernando Valley to Big Tujunga Wash in the Sunland area. Along this zone, many additional structures sitting on top of the fault zone were severely damaged directly by fault movement at the surface.