What is a lower level jet stream?
It is a river of fast moving air in the lower level of the atmosphere, while toe big jet streams are in the higher atmosphere.
What does it do?
In the spring-summer time, the lower level jet stream will amplify itself and storms around it in the Plains at nighttime, explaining why storms are sometimes stronger at night.
It can rapidly transport moisture and warm temperatures from the Gulf of Mexico north.
So the only thing it does is use wind to make storms stronger at night?
With the rapid transport of moisture, it is able to quickly pump up storms and feed it until the jet moves away.
What does it look like?