Meteorologists dont always have the say when they go on the air.
In most markets, they would put up a banner or reduce the screen box and wrap the announcement around the screen.
I would never suggest that someone die for a TV programming decision. But there are ways to get the message out to the masses without interrupting the program entirely.
The masters was still shown side by side with her weather report minus the sound and golf commentators. A tornado had already touched down and looked as if it was reforming in north metro Atlanta.