I'm watching Sky News right now and I'm wondering how do British broadcast networks handle things like regionalized severe weather alerts and school closings in the UK given the extent of regionalizations and centralized play Out?
Here in the US when there's severe weather or the threat of severe weather they will throw up a bug or specialized logo graphic saying Thunder Storm Warning and they will run a crawl (and sometimes a small radar box) usually after every commercial break and if the "block" between breaks is particularly long they will play it again.
If there's imminent wide spread danger for say a Tornado Warning stations will break into programming with their meteorologist (or anchor in one case*) at the ready using their $100,000 weather computers with $5,000/month subscription fee and occasionally their own operated radar all to show you the details of the storm. Of course with certain severe weather events like tornados the local cable companies will cut out of all programming and air this:
For school /business closings they will leave up a ticker up on screen until about 10AM. Some are designed to work within a stations graphic packages while others like WNBC's decide to push back the frame:
Don’t let anyone treat you like you’re a VO/SOT when you’re a PKG.