I'm unsure why we should really care about what buoys floating in the ocean, directly at sea level, say about recorded wind speeds.
Instead, I would consider what the radar indicated speeds were. The storm would not have been given a Category 1 rating without the requisite wind speeds being detected. I'll keep my tinfoil hat on the shelf for this one.
They are not concerned with the computer knowing the answer, they are concerned with the computer understanding the question. That's the real challenge with Jeopardy anyway, and would be a great indicator of progress in the field of artificial intelligence.