Add support for local weather alerts
Some territories routinely suffer extreme weather, and some of them have developed alerting system.
For example, most years Hong Kong is impacted by typhoons. The Hong Kong Observatory made a mobile app (for iOS and Android) which pretty much everybody I met there had installed.
That app lets the HKO alert people when a typhoon or a strong thunderstorm is coming. This is important for people to know they should stay at home to protect themselves.
I'm sure many other territories have developed similar alerting systems.
I'm not sure how this could be implemented in Weather. Do these territorial administration provide their alerts as open data? Should the app register with them? Should Weather let them provide a small plugin they would develop and local people would install it from Software? Who knows? I don't.
Basically the goal is for people to receive alerts/notifications about an incoming severe weather event. And of course, they shouldn't need to manually start the app to get the alert.