This just in: Michelle Obama's appearance tomorrow at the Moda Center has been postponed. Live Nation just sent the following press release:
Live Nation and Crown Publishing announce Becoming: An Intimate Conversation with Michelle Obama scheduled for Saturday, February 9 will be postponed to March 19.

Acting out of an abundance of caution and concern for the safety of guests, Mrs. Obama’s show is being rescheduled due to predicted winter snow conditions.
Tickets for the previously scheduled event will be honored for the new date. No exchange necessary.
No need to brave the ice and snow for Michelle, everyone! She'll be back.

(Plus, that gives you enough time to finish reading Becoming, because we all know you haven't finished it yet. It's a long book!)