Derecho Storm in US

Context

A storm system known as a 'Derecho' impacted the states of Nebraska, Minnesota, and Illinois in the US.

As the storm approached, winds blowing over 140 km/h damaged power lines and brought down trees.

About

Derecho, according to the US National Weather Service, is "a widespread, long-lasting, direct storm" associated with "a fast-moving rain belt or thunderstorm".
The name is derived from the Spanish phrase 'la derecha', which means 'straight'. Straight storms are those where thunderstorms do not change, unlike a hurricanes.
These storms travel hundreds of miles and occupy a large area.
Because it is a warmer environment, Derecho frequently (but not always) happens in the summer, beginning in May and intensifying in June and July.
However, they are uncommon compared to other storm systems such as hurricanes or hurricanes.

Classification

A derecho is defined as a storm with wind gusts of at least 93 kilometers per hour. The wind damage swath extended over 400 km.
According to the University of Oklahoma's School of Meteorology, the period between consecutive wind damage incidents should not exceed three hours.

Types of Derecho

Progressive: A progressive derecho is characterized by a small line of thunderstorms that can move hundreds of miles over a restricted route. This is a summer phenomena.
Serial: A serial derecho, on the other hand, consists of a lengthy and broad squall line that sweeps across a huge region. It generally happens in the spring or fall.
Hybrid: Hybrid ones combine progressive and serial derechos.

What happens during Derecho?

Severe thunderstorms produce a 'green sky' as light interacts with the massive amount of water they contain.
Large rains and hail scatter all wavelengths except blue, allowing only blue light to penetrate beneath the storm cloud.
This blue is then combined with the red-yellow of the afternoon or evening sun to form green.