It had “cycloidal marks,” or a chain of dark loops created by the tornado’s suction vortexes. Based on their observations, ...

Image: Google Earth “It bears striking patterns called ‘cycloidal marks,’ formed by tornado suction vortexes,” said Matej Lipar, a researcher at Curtin University in Australia and lead ...

It bears striking patterns called "cycloidal marks," formed by tornado suction vortexes. This suggests the tornado was no ordinary storm but in the strong F2 or F3 category, spinning with ...

It bears striking patterns called “cycloidal marks”, formed by tornado suction vortexes. This suggests the tornado was no ordinary storm but in the strong F2 or F3 category, spinning with ...

Dr Lipar said these were "cycloidal marks", and the biggest clue to what created the scar. "We usually see tornadoes as eyewitnesses or concerning how much destruction they left behind," he said.

The scar is 11km long and between 160–250m wide. It bears striking patterns called “cycloidal marks”, formed by tornado suction vortexes. This suggests the tornado was no ordinary storm but in the ...

It bears striking patterns called "cycloidal marks", formed by tornado suction vortexes. This suggests the tornado was no ordinary storm but in the strong F2 or F3 category, spinning with ...

Researchers studied the looping "cycloidal marks" in the scar to determine the tornado's severity, direction and wind speeds. Matej Lipar, Journal of Southern Hemisphere Earth Systems Science ...

It bears striking patterns called “cycloidal marks”, formed by tornado suction vortexes. This suggests the tornado was no ordinary storm but in the strong F2 or F3 category, spinning with ...