Did anyone get a WARN notice? after 9 years as a line cook

I received a formal notice about a mass layoff at my workplace. I do not usually post, so bear with me. I do not know if I should start looking now or wait for severance news. Has anyone been through this?

I stayed for the retention bonus and looked for work on the side. It cushioned the gap.

Start your search early. I wish I had begun the day of the notice.