Much like hurricanes are rated on a scale of 1-5, tornadoes are rated on the Fujita Scale, which measures a tornado's destruction on a scale of 0-5.
An F0 tornado, the most common in Washington, means it was very weak with wind speeds under 72 mph and caused light damage. An F1 is a moderate tornado with winds between 73-112 mph. F2's cause considerable damage, while F3s approach 200 mph and cause severe damage.
Once you get to F4, winds can get to 260 mph and houses and be leveled. F5 tornadoes are rare but are considered "incredible" tornadoes with winds up to 320 mph and destroys everything in its path. They can turn debris into missiles and send cars flying over 300 feet in the air.
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