WENATCHEE, CHELAN COUNTY, WASHINGTON USA
METR 210 Activity Name: Thunderstorms and Tornadoes according to USA Today
Although USA Today does not publish real weather charts in hard copy (bad) the newspaper does provide solid information on the basics of weather (good). In this exercise you will take a look at the USA Today Web site for its information on thunderstorms and tornadoes. Ignore all advertisements on the Web page.
Go to USA Today Weather online at
Click on Today’s Graphic, “How Tornadoes Form.”
98% of tornadoes have wind speeds of less than ____________- mph.
Click on conditions favorable for tornado development, among other things on the Web site.
Describe the three layers of air that include a “convective cap,” from the lower level up.
What is a “dry line.”
Besides the dry line and convection, what other triggering mechanism can cause warm, humid air to start rising from the Great Plains?
Although the Fujita tornado scale originally went above F5 and posited wind speeds of over 300 mph in super tornadoes, has any scientific study ever verified that such high wind speeds actually occur?
What is the Fujita scale based on – the size of hailstones, the speed of the wind, or what?
Besides warm, humid air at ground level, what does the upper air have to be like to set up powerful thunderstorms?
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