Was there an earthquake just now in the united states?

Hope everyone is safe, Today earthquake has been recorded about magnitude 4.1 in the san Francisco

Well the earthquake was not heavy in much area but there was several damage on San Francisco 

Tremors were reported throughout the Bay Area and the Sacramento metro area, according to the USGS shake map.

Northern California has been slammed by a magnitude 6.2 earthquake, which has caused' moderate to intense shaking.'

According to a report published by USA Today,  there were no immediate reports of damage or casualties.

But why sudden earthquake is observing nowadays? It happened due to climate change

What do you think guys, what reason could be for the heavy earthquake in the city?