Damage scales exponentially with wind speed. Hurricanes max out around ~180MPH. That's the speed of a feisty F3 tornado. You can be "hit" by a hurricane and be fine unless it's the eye or you get some debris in higher winds further out. Any hit from a tornado brings the full force of a thin column of debris whirling at that speed.

> A reinforced concrete should've been easily capable of withstanding a hurricane.

Hurricanes are kinda wimpy, though. Their main claim to fame is sustained winds. A tornado can pack winds pushing 300 mph. Good luck building a warehouse that can take a direct hit from that.

plus it’s not always the wind that does the damage, it’s what the wind picks up and throws at you

“It’s not that the wind is blowing, it’s what the wind is blowing. If you get hit with a Volvo, it doesn’t really matter how many sit-ups you did that morning.” — Ron White

Hurricanes and tornados are two different phenomena, entirely.

A Category 5 hurricane generally has wind speeds less than 200 mph.

EF5 tornadoes start at 200 mph, and can be well over 300 mph.

Could you design a warehouse (note: not a small storm shelter, but a warehouse, which by definition needs to have very large interior open spaces) that would withstand a 300 mph wind? Maybe.

The budget would be well beyond the reach of any non-military client, though.

To be fair hurricanes and tornadoes are not completely separate phenomena. Hurricanes are know to spawn tornadoes within them and these tornadoes can substantially add to the destruction.