That is a very odd data point. I have no explanation for that.
As for the gulf, it is a sort of planetary scale tide pool. As far as I understand, it usually has warm waters and fairly even temperatures across its body. Although ten degrees warmer for the time of year is interesting. Tornado season will be fun.
The thought that Q and company could know of a real storm or unique event and plan for it is both fascinating and terrifying for its existential implications. Right down to Patton's prayer type stuff. But on a greater scale.