Hurricane-grade storms? Not even close.
As an admin of several sites around San Antonio, where Microsoft's purported data center is located, I can state that none of my sites reported any service outages. They are all monitored by a third party service and located in standard office buildings. Neither were there massive blackouts reported on the news, nor did the lights so much as flicker in my home during this heavy rain event. (Tenth-highest in city history, thus well within expectations.) Whatever problems Microsoft had were confined to their campus.
There's cheap, and then there's multiple-single-points-of-failure cheap.