wunder beta

📘 How a tornado tightens

Trace wind shear, mesocyclones, pressure, convergence, stretching, and warning signals.

lessons

~10 min

to learn

🔬 Science

subject

Adults

level

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What you’ll learn

Wind shear
Updraft
Low-level spin
Pressure
Rear-flank downdraft
Vortex stretching
Multiple vortices
Radar
Life cycle
Safety

Questions this course answers

What is wind shear?

Shear can create horizontal rotation that an updraft tilts upright.

What is a mesocyclone?

It is the broader circulation in which some tornadoes develop.

Why can a vortex tighten?

Stretching and inward flow can concentrate angular momentum.

Does a visible funnel define every tornado?

The funnel is condensed cloud; dust and debris may mark circulation below it.

Why should people act on a warning early?

Surface conditions can worsen before visual confirmation.

Grounded in trusted sources

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