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There's one name that's been on millions of mines this weekend.

All right, so we're starting here, the storm that came ashore as Hurricane Hillary yesterday.

Tropical Storm Hillary is pommeling the Los Angeles area.

Tonight, Tropical Storm Hillary is lashing Southern California with tens of millions in

its path, Hurricane Hillary or Tropical Storm Hillary.

And what's the difference?

We categorize tropical cyclones, which is sort of the broad term for all of these types

of events based on their maximum sustained wind speed.

And if it reaches a certain level of wind speed, we designate it from a tropical depression

to a tropical storm.

We call the Jill Trepanier to explain all things Hillary because she studies hurricanes and

climate change, extreme climatic events as an associate professor at Louisiana State

University.

When I hit 74 miles per hour, it becomes a category one hurricane.

So we kind of go up from that particular wind speed up to a cat five, which are impressive

incredible wind speeds, total catastrophic damage at that level.

And even Jill was taken aback when she heard about Hillary because it's been decades since

a storm like this has hit Southern California.

My response initially was what?

To sort of vary, really is this happening?

This is a place we're so familiar with hearing about forest fires, drought conditions, not

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