All Gwinnett Technical College campuses will close at noon Friday, ahead of a snowstorm that could leave more than four inches of snow in Gwinnett County.

Gwinnett Tech campuses will be closed all day Saturday as well, the school announced on Twitter.

Georgia Gwinnett College, in Lawrenceville, also announced an early closure Friday. Georgia Gwinnett will close at 2 p.m. Friday and remain closed Saturday and Sunday.

Snow is expected to begin in metro Atlanta this evening. Gov. Nathan Deal has issued a state of emergency and ordered state employees to go home at 4 p.m. and be prepared to stay there for three days.

Here is a list of things to do before the snow gets here.