 National Hurricane Center Director Michael Brennan. Hurricane warnings are in effect for Little Cayman, Cayman Brac, and Grand Cayman. And then thinking farther downstream, a barrel is going to move towards the Yucatan Peninsula of Mexico and then across into the Gulf of Mexico and potentially threaten northeastern Mexico and south Texas. The storm ripped off roofs in the Grenadines and jumbled fishing boats in Barbados before lashing Jamaica.