I would not even worry about 50 mph winds! 100 mph winds, I would be concerned!
We were in our current HTT, a few years back in a severe downdraft, we figured the winds were close to 90 mph. The FW tank was full, and we were in it! We could feel the TT rocking on the stabilizers, coming of the ground.
In a hurricane, the TTs on the outer edge of the lot will take the brunt force. Those rigs will help protect the ones in the center like yours. Another thing you can do, is fill the FW tank, and even the sewer tank. This will add 250 to 1000 pounds. All that weight will be down low, so the center of mass will drop way down closer to the floor level. Making it a lot harder for the wind to tip it.
When in storage, it is best to keep the stabilizers up. Your chance of damaging them is greater from a flat tire than storm damage.
Big thing to remember, keep your awning in during any wind storms!
Happy Camping