As of a National Hurricane Centre (NHC) update at 07:00 London time, the centre of Delta was around 250 miles south of Cameron, Louisiana, and displaying maximum sustained winds of 120mph, making it a Cat 3 hurricane.
The storm is moving north-northwest at around 12mph, and is expected to turn north during the next few hours. Later this evening, Delta is predicted to move north-northeast. On this trajectory, Delta will move over the northwestern Gulf of Mexico today, and then inland overnight.
Tropical Storm Risk predicts the storm will make landfall at around midnight London time or 18:00 local time near Cameron, Louisiana, which is some 100 miles southwest of Lafayette.
Delta will make landfall in the same area as Hurricane Laura, which came ashore in Cameron at Cat 4 strength in August.
The NHC said Delta is to weaken slowly as it approaches the northern Gulf coast today, and weaken rapidly after moving inland.
The NHC has a hurricane warning in place for the area from High Island, Texas to Morgan City, Louisiana.
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Hurricane Delta is set to make landfall in Louisiana later today as a strong Cat 2 or Cat 3 hurricane, before weakening as it moves north.