Satellite imagery can help determine the strength, size and cohesion of a storm. The stronger a storm becomes, the more likely an eye will form in the center. When the eye looks symmetrical, that often means the storm is not encountering anything to weaken it.

Around one metre of rain could inundate parts of southeast Queensland and northeast NSW later this week as Tropical Cyclone Alfred makes landfall.

Tropical Cyclone could impact a heavily populated area extending from Bundaberg to south of the border. Follow the live updates.