FYI: This post was inspired by science mag’s 2018 article.

…We still don’t believe it – the video below proves it. 

The formation of Tornadoes has been completely knocked on its head. Measurements from Tornadoes in Oklahoma and Kansas seems to suggest these weather events first develop near the ground.

That’s country to the widely-known theory the winds of a Tornado develop many kilometres up in the clouds – only later to touch down on the ground.

Researchers studied four Tornadoes – including the El-Reno Tornado, which holds the record as the widest ever measured. 

The researchers noticed something particular when they compared radar measurements that tracked wind speeds with a number of photographs and videos of the El Reno Tornado taken by storm chasers.

The funnel was already on the ground minutes before the radar minutes before the radar data – roughly taken two hundred and fifty meters off the ground – recorded any rotation.

Just to find out, the researchers re-analysed the radar measurements taken near the ground.

A hilltop vantage point during the storm serendipitously allowed the team to scan close to the ground with the interfering effects of trees and telephone poles.”

Katherine Kornei, Science Mag

The researchers discovered rapid rotation near the ground before it appeared higher up – a pattern that was later confirmed in the three other Tornadoes.

These findings have significant implications for how forecasters issue Tornado watches/warnings – researchers suggest. 

Simply because forecasters often rely on measurements of wind speeds higher up in the clouds.

The reason why, the wind might be already swirling at dangerous speeds near the ground – “warnings might be late in the sounding the alarm for Tornado-strength winds.”

It’s suffice to say we still believe in the widely-known theory.

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