Hurricane Delta threatens Mexico, southern United States
The storm was heading towards the US Gulf Coast at seven miles per hour, the Miami-based center reported.
"Delta continues to strengthen," the NHC said. "Hurricane conditions expected Tuesday night in the northeast Yucatan Peninsula."
A hurricane watch is in effect for the northern tip of the Yucatan Peninsula.
The NHC predicted the storm will reach the southern United States either Thursday night or Friday morning without encountering any obstacles that could weaken it.
In September, meteorologists were forced to break out the Greek alphabet to name Atlantic storms for only the second time ever, after the 2020 hurricane season blew through their usual list, ending on Tropical Storm Wilfred.
Meteorologist MJ Ventrice of The Weather Company tweeted that when Delta makes landfall, "it would be the 10th tropical cyclone strike of the season."
"This would break the record for most landfalling tropical cyclones in a single season," he added, noting the previous record was nine storms in 1916.