What happens when plates shift in western united states

Your answer would be an earthquake.

I'm going to assume you're talking about tectonic plates, as this question is under geography.

Tectonic plates make up the surface of Earth. Where two of them meet is where the possibility of an earthquake emerges.

When enough pressure is placed on a fault, the plates can sometimes suddenly shift, causing what we feel as an earthquake. This is what happened at the Western United States, when at the San Andreas Fault, for example, two plates suddenly shifted and caused a massive earthquake.

Hope this helped!

i would expect light rain in pittsburgh throughout the following 24 to 48 hours. the lower/falling weights in urban areas toward the west demonstrate that a low weight framework is moving from west to east toward pittsburgh. low weight frameworks are ordinarily connected with precipitation. the way that you don't see a major drop in temperature in the more western urban areas demonstrates the low weight framework is moving with a warm front, so just light rain would be normal. substantial downpours or progressively vicious climate is just typically connected with chilly fronts, where the warm air is pushed up and over a cool front quickly. this quickly rising air (convection) is what gives you heavier torrential downpours, and other conceivably serious weather conditions.