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What are derechos?

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Chrissy Zhang

on 20 March 2014

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Transcript of What are derechos?

What are derechos?
A derecho, «day RAY choh», is a widespread, long-lived windstorm associated with a line of thunderstorms. A derecho can sometimes last for more than a day and blow across several hundred miles. However, its strong winds typically blow for less than 10 minutes at any particular location in its path. A derecho’s winds often blow between 58 and 75 miles (95 and 120 kilometers) per hour, although gusts can occasionally exceed 120 miles (195 kilometers) per hour.
5 Important Facts
Derecho is Spanish for straight ahead. The term refers to the straight-forward motion of the derecho’s powerful winds.
Derechos often form near a weather front that separates a warm and humid air mass from a cooler and drier one. Weather fronts are borders between two or more air masses with different characteristics. Most U.S. derechos gain their strength from the warm and humid air that flows north from the Gulf of Mexico. In general, warm air contains more energy than cool air.
When viewed on a weather radar, the line of thunderstorms that produces a derecho is normally bowed (curved). Such a pattern is called a bow echo. A derecho-producing storm can include from one to several bow echoes.
5 Important Facts
A derecho does not cause damage in a spiral or ci
ular pattern, as do many tornadoes. Instead, derecho damage occurs in straight lines. For example, fallen objects such as trees and power lines point in the same direction after a derecho has passed.
Derechos usually develop in spring or summer, almost always east of the Rocky Mountains.
4 Reader Responses
3 Key Vocabulary Words
a widespread, long-lived windstorm associated with a line of thunderstorms.

Bow Echo:
A pattern that is bowed, or
curved, when

viewed on

a weather radar.

Widespread: Broad,
drawn out.
2 Wondering Questions
How come derechos usually form east of the Rocky Mountains? They mentioned it in

paragraph 3.

What if 1 serial derecho and 1 progressive derecho collide together? Does that make a hybrid derecho? They mentioned the different types of derechos in paragraph 5.
1 Text Structure
The text structure of paragraph 7 is Cause/Effect. I think it is Cause/Effect because it says it was named "derecho" because of its straight-fow
d wind

Yes, I think the point effectively because it was easier
to un
derstand what the author was
to say.

Thanks for watching!
Why I thought these words were important.
I identified the three words as being important vocabulary words because they were important to trying to "dissect" the article.
I would reccomend this article to others because it was informat
yet easy to understand.

I wonder how they track derechos?

The fact that derechos mostly formed east of the Rocky Mountains
me. If derechos gained their strength from heat, wouldn't derechos more likely occur in a more southern part of the country?

I think that derechos are similiar to tornadoes, but not the same because tornadoes cause damage in a circular pattern, unlike derechos, which have powerful straight-forward winds.

I was once camping in the mountains, when it rained. I had to runoff.
During his air test a young pilot
flew through a rainbow. He passed
with flying colors.
A derecho storm in Ohio 6-29-12 Security Camera Footage
Full transcript