Add Yahoo as a preferred source to see more of our stories on Google. With the spring thunderstorm season upon us in Michigan, residents may see cold air funnels — essentially weak tornadoes that ...

Not all funnel clouds in Oklahoma are dangerous tornadoes—some are cold air funnels. These form in the spring and fall under high-based showers or thunderstorms when colder air aloft moves over warmer ...

Cold air funnels are weak, short-lived tornadoes that form under cold air showers or thunderstorms, most commonly seen in spring or fall and usually don't reach ground. Cold air funnels are difficult ...

Cold air funnels are weak, short-lived tornadoes that form under cold air showers or thunderstorms, most commonly seen in spring or fall and usually don't reach ground. Cold air funnels are difficult ...

When we think about funnel clouds in Oklahoma, we think of tornadoes—powerful, rotating columns of air capable of significant damage. But not all funnel clouds are dangerous. Cold air funnels ...

With the spring thunderstorm season upon us in Michigan, residents may see cold air funnels — essentially weak tornadoes that usually are harmless. "(Cold air funnels are) funnel clouds or (rarely) a ...