Plant closing and notice period questions - 12 weeks in

My employer announced that the site will close and gave us written notice. I have read a lot of threads here and could not find my exact situation. I do not know if I should start looking now or wait for severance news. Should I stay for the bonus?

The workforce board ran a rapid-response session for us with résumé help and information on benefits. Ask if yours will.

Write down key dates and keep copies of the notice. Mine helped when a question came up later.