Another thing to consider: Social science studies demonstrate that people are slow to take action in response to a warning if they don't see the danger for themselves. Twitter is filled with people posting pictures of confirmed or suspected events, and chasers posting clips and links to live streams, and clips and images of broadcasters amplifying all of this. Some of this may find some of this on Mastodon now, but there's no comparison in scale or real-time availability and interaction.
@mergerson This. Yes. No viable alternative right now. It’s how we followed developments during the derecho in May. Now it’s the winter storm that has closed campus for two days and counting (hell does occasionally freeze over). And on a regular basis, it’s all the local news, insights and tidbits.