Did anyone get a WARN notice? - what worked for you?

My employer announced that the site will close and gave us written notice. I do not usually post, so bear with me. I do not know if I should start looking now or wait for severance news. What did the workforce office offer?

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

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