This week's question comes from Morning Brief reader Blake, who asks, "Why do some weeks have lots of weather while others don’t?”

Meteorologist Jonathan Belles: Your presumption is that we do have more active weeks than others, and that's totally true.

It isn’t just the chaos of weather, though it may seem like that at the time. To some degree, it is predictable. Typically in the spring and then again in the fall, we get transition periods.

In the spring, you get these massive storms like we saw last weekend, where you get a blizzard on one side and you get severe weather on the other. In the fall, you add hurricanes into that mix.

In those transition periods, the Earth is trying to figure out where to put its heat. The sun is coming northward and that heat has to go somewhere. The earth is trying to figure out how to equalize heat around the planet, and that's just never going to happen equally.

The atmosphere is a fluid. Sometimes, that'll come up through the East Coast, sometimes that'll come up through the West Coast, and that throws the jet stream out of whack every time. Each one of those kicks sends our weather into chaos.

The reason why we get those big pattern flips, often this time of year, depends on whether we have high pressure or not. High pressure keeps things stable. Heat stays in one place and moisture doesn't come in.

High pressure systems are like mountains of air. Anytime you want to move a mountain, it takes a giant heave. So, it can take 1 week or 2 or 3 weeks, especially in the summer, when you get a lot of hot air already to move those high pressure systems, to get them moved out of whack.

From June to August-ish, we get into a period where high pressure has just taken over.

That’s because high pressures feature sinking air. Sinking air isn't conducive to thunderstorms and all the things that make us go mad here at the Weather Channel.

Do you know the Acme desert cartoon, where there's just nothing going on? You can see Wile E. Coyote just run on by. That’s because the high pressure has just taken over and there’s just nowhere to get thunderstorms.

On the edges of those high pressure systems, though, you often see round after round of thunderstorms where air isn't sinking.

As we saw the last couple of weeks, we've had tornado outbreaks or severe weather, severe thunderstorm outbreaks just outside of this heat dome, and those come from low pressure systems.

If you're on the edge of a heat dome and in the path of these thunderstorms for a week or two, it can feel rather active.

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