Hurricanes are among some of the most powerful and destructive storm system on this planet, being on par with tornadoes in terms of intensity and damage potential. They unleash massive amounts of rain, storm surge, and high winds. They can sometimes spawn tornadoes if conditions are right. How do hurricanes form? Hurricanes form in waters with temperatures of at least 26.5°C (80°F) low wind shear, and moist, unstable air helps them form.