Increase in Tornado Activity

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Questions and Answers

Which region is NOT mentioned as getting a break from severe weather?

  • The Great Plains
  • The Northeast (correct)
  • The Midwest
  • The South

What is a significant factor contributing to the heightened vulnerability of rural areas in the Southeast?

  • Extensive tree cover (correct)
  • Advanced warning systems
  • Lower population density
  • Predominantly daytime tornadoes

What is the primary reason scientists are hesitant to directly link climate change to increased tornado activity?

  • There is no correlation between temperature and tornado formation
  • Funding for climate change research is limited
  • Tornadoes are decreasing in frequency
  • Tornadoes are too small to accurately model (correct)

What percentage of all twister deaths are attributed to tornado outbreaks?

<p>80% (D)</p>
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Which of the following best describes the trend in tornado touchdowns?

<p>Increasing in frequency and shifting eastward (C)</p>
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What is the significance of 'outbreak days' in the context of tornado activity?

<p>Days with 30 or more tornadoes (A)</p>
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Besides the number of tornadoes, what other weather events have had an unusually high number of reports?

<p>Large hail and damaging winds (D)</p>
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In which month was tornado activity the second-most active on record?

<p>April (B)</p>
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Which factor is LEAST likely to contribute to future increases in severe weather events, according to the information provided?

<p>Decreased heat and moisture at the surface (B)</p>
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How did the strength of EF-4 tornadoes in Oklahoma during the specified period compare to the preceding years?

<p>The strongest to strike the state in eight years (A)</p>
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Flashcards

Tornado Outbreak Days

Days with 30 or more tornadoes, contributing to 80% of tornado deaths.

Southeast Vulnerability

Rural areas are more vulnerable due to increased populations, nighttime tornadoes, and tree cover.

Warming Climate

The increase in overall global temperature that can provide energy for supercell storms.

Supercell Storms

Powerful rotating thunderstorms that can produce tornadoes.

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Active Tornado Season

The second most active April on record for tornadoes; the first was in 2011.

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EF Scale

A scale that measures the intensity of a tornado based on the damage it causes.

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Study Notes

  • A community near Pittsburgh is cleaning up after a rare tornado on Saturday which caused damage to homes and downed trees.
  • The Great Plains, Midwest, and South are getting a break from a relentless stretch of severe weather.
  • April and May are usually the busiest and most dangerous months for tornadoes.
  • This season has been exceptionally active.

Increase in Tornado Activity

  • There is an uptick in tornado activity, and tornadoes seem to be moving into more populated areas.
  • Six weeks of storms have left a trail of destruction thousands of miles long.
  • There is a question of whether tornadoes are more common and stronger nowadays.
  • There has been an increase in the number of days with 30 or more tornadoes, known as outbreak days.
  • Tornado outbreaks are responsible for 80% of all twister deaths.
  • More tornadoes are touching down further east, outside the Great Plains, hitting towns and cities not used to seeing them often.
  • Rural areas in the Southeast have heightened vulnerability due to more people, nocturnal tornadoes, and tree cover.

Climate Change

  • Scientists are hesitant to make a direct link between climate change and tornado activity because tornadoes are too small to accurately model.
  • A warming climate provides the fuel for super cell storms that can spin off twisters.
  • More of these events are expected in the future due to heat and moisture at the surface.
  • As storm patterns shift, humans need to adjust.
  • The way we build is important, with cities growing and expanding, there are more targets.

Unusually Active Year

  • It's been an unusual start to the year with over 6,000 reports of large hail, damaging winds, and tornadoes.
  • There have been more than 260 twisters across 19 states in the last few weeks.
  • This past April was the second most active April in terms of tornadoes, behind 2011.
  • There have already been two violent EF-4 tornadoes in Oklahoma, the strongest to strike the state in eight years.
  • The severe season is far from over, with more storms possible from Texas to Mississippi.

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