Why do earthquakes happen in san Francisco??

because it lies on the st andreas fault, a meeting of 2 techtonic plates

Because of the San Andreas fault which runs underneath the city.

Because it is built on a fault line. That is where two tectonic plates meet and push against each other. When the pressure becomes too great the result is a massive upheaval of the ground.

Because the chose first, and Florida had to settle for Hurricanes

Earthquakes occur anywhere along "fault lines", where 2 tectonic plates meet, or where a plate has a fracture in it. San Francisco is just one of many communities around the Pacific Ocean's "ring of fire" that marks where the various crustal and oceanic plates meet. Volcanoes, hot springs, and earthquakes are common all along this "ring". Mt. St. Helens is part of that ring, so is the area in southeast Asia that caused the tsunami of 2004.

They're on top of a fault line, which is where quakes occur.

We know why earthquakes occur in the Bay Area: Two of the earth's largest tectonic plates meet in the vicinity of the San Francisco Bay Area. When boundary faults break, the North American and Pacific Plates roll suddenly and erratically past each other and quakes occur. We know that large and damaging earthquakes are certain to occur in the future: At least eight faults in the Bay Area are capable of producing earthquakes of magnitude 6.7 or larger. Such quakes can cause substantial damage to buildings, roads, bridges, and utilities, resulting in injury or death to people in the area.

It lies on a fault line where two techtonic plates meet Imagine the Earth as a jigsaw. All the parts together make the globe. The faults slide around but every now and then they stick. The pressure then builds until suddenly it gives, creating a large shockwave. This is felt as an earthquake.

Because it is a sink of iniquity and will be destroyed AGAIN. These small 'quakes are only warnings...