Thursday 25 July 2013

Bizarre cloud formations before downpour

Shelter from the Storm: Incredible and unusual clouds that herald a massive downpour are spotted in the Midwest
  • Bulbous formation turned sky over Iron Mountain orange
  • Weather phenomenon, known as Mammatus, can be sign of storm



24 July, 2013


Ominous clouds gathered over a Michigan city on Monday night, leading residents to question what was causing the bulbous formations and if they were a sign of rough weather ahead.

As the orange-tinged clouds were spotted at about 8.30pm above Iron Mountain, residents posted pictures of them on social media to see if anyone could identify what they were.

Meteorologist Jeff Last was finally able to resolve the mystery through Twitter, when he identified the phenomenon as Mammatus.

His tweet was in response to a picture Joe Nottage had put online, as he asked: 'Can anyone explain this?' Skye reported.

Another resident, Jason Asselin, filmed the clouds as they gathered over the city.

'All of a sudden it got very yellow outside, it felt strange and mysterious,' he wrote on YouTube.

'It was the craziest thing I have ever witnessed over my head. I almost expected to see a tornado or something.' 






His assumption that the formation, which gathers under a larger cloud, is a forewarning of severe weather was close to the truth.

The clouds, which are formed after a sharp change in temperature or moisture, can sometimes be a sign of an approaching thunderstorm or, in some cases, a tornado.

Other people struggled to describe the strange and beautiful weather phenomenon.

In his blog for the city's Daily News, Chris Tomassucci said: 'The pictures really don't capture how eerie the whole experience was.'

He added: 'The mammatocumulus that formed over Iron Mountain made everything take on strange coloration. Greens looked more green, blues more blue, and so on.'






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