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Extreme Weather Video Analysis

Content type
User Generated
Subject
Environmental Science
School
Indiana University Bloomington
Type
Homework
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Running head: EXTREME WEATHER 1
Extreme Weather
Students Name
Professor’s Name
Date of Submission

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EXTREME WEATHER 2
Video: Identifying Key Features
1. “Rain cooled downdraft air, when it hits the ground, spreads out in all directions.” What is the
leading edge of that cool air called? (He didn’t say the phrase in the video narration, but we’ve
already learned it.)
A gust front
2. Every thunderstorm starts with an updraft. What makes the updraft of a supercell unique?
Supercell is unique since its updraft rotates horizontally and as such, making the storm
intensified and organized, and as such, the storm could last for long periods, not minutes but
hours.
3. When looking at a supercell visually (in real life or in a photo or video), what are some things
you might look for when trying to locate the updraft? List three.
- Air-free base (air inflow visible at the bottom of the storm and raising into the storm)
- Distinctive cloud base -Smooth cloud
- No rain zone/area
Video: Wall Clouds & Tornadoes
4. In your own words, how will you know that you are looking at a wall cloud and not just a “scary
looking” cloud?
Wall clouds are primarily connected to the base of the bottom of the storm and around the
action area of the storm. Additionally, a wall cloud, in most cases, will slope towards the rain
zone, indicating the steady drift between the cool and warm air.
5. Does a wall cloud guarantee a tornado is about to occur?
For a wall cloud to a tornado, it needs to be persistent for more than five minutes. Again,
there must be evidence of increasing inflow i.e., winds moving towards the storm. The wall
cloud as well needs to lower towards the ground and also show increasing rotation. The cloud
as well needs to show increasing and rapid upward motion.

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Running head: EXTREME WEATHER 1 Extreme Weather Students Name Professor’s Name Date of Submission EXTREME WEATHER 2 Video: Identifying Key Features 1. “Rain cooled downdraft air, when it hits the ground, spreads out in all directions.” What is the leading edge of that cool air called? (He didn’t say the phrase in the video narration, but we’ve already learned it.) A gust front 2. Every thunderstorm starts with an updraft. What makes the updraft of a supercell unique? Supercell is unique since its updraft rotates horizontally and as such, making the storm intensified and organized, and as such, the storm could last for long periods, not minutes but hours. 3. When looking at a supercell visually (in real life or in a photo or video), what are some things you might look for when trying to locate the updraft? List three. - Air-free base (air inflow visible at the bottom of the storm and raising into the storm) Distinctive cloud base -Smooth cloud No rain zone/area Video: Wall Clouds & Tornadoes 4. In your own words, how will you know that you are looking at a wall cloud and not just a “scary looking” cloud? Wall clouds are primarily connected to the base of the ...
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