Hurricane Florence ‑ the most powerful storm to threaten the Carolinas in nearly three decades ‑ is expected to strengthen.

Officials warn there is a chance of "life‑threatening inundation from rising water" over the next 48 hours as Florence heads for the US East Coast.

With sustained winds of about 215km/h, the weather system is currently a category four storm.

Forecasters say it could make landfall on Friday, near Wilmington, North Carolina.

Virginia, Maryland, Washington DC, North and South Carolina have all declared states of emergency.

[Source: BBC]