How Tornadoes Cause Catastrophic Property Damage

The sheer force of tornado winds is the primary cause of catastrophic damage. Winds strong enough to lift cars and peel asphalt can rip roofing materials away in seconds. Once the roof is gone, the walls lose their main support and can collapse inward or outward.

Even if the structure stays standing, the wind can push on exterior walls and create internal pressure. That pressure can blow out windows and doors, letting rain and debris enter. The result is a building that looks intact from the outside but is severely compromised inside.

A tornado's center has extremely low pressure compared to the inside of a building. When the vortex passes over, the higher indoor pressure pushes outward. This can blow out walls and roofs from the inside, even without direct wind contact.

That explosive effect is why some homes appear to burst apart. The sudden pressure drop also sucks windows and doors outward. After the storm, the building is open to the elements, and any rain that follows soaks everything inside.

Mold can start growing on damp materials within 24 to 48 hours. Contaminated water from sewage or flooding can carry bacteria. Electrical hazards from downed wires or wet outlets are common after a tornado.

Do not enter a damaged building until local authorities say it is safe. Wear sturdy boots, gloves, and a mask if you go inside. If you feel unwell from mold or dust, see a doctor. For thorough water damage inspection and drying, local water damage pros can help.

Policies vary, and your insurer decides what is covered. Take photos of the damage before any cleanup. Contact your insurance company to report the loss and ask about coverage for temporary housing and repairs.

• Turn off gas and electricity if safe
• Avoid standing water that may be electrified
• Wear protective gear during cleanup
• Document damage with photos and notes
• Check for structural cracks before entering