Article from the website habc.net.au.
A strange S-shaped formation which appeared on weather bureau radar off the West Australian coast was not caused by cloud, the bureau says.
The shape was spotted on the weather bureau's radar map on Wednesday about 30 kilometres west of Rottnest.
After checking the satellite, the bureau's Neil Bennett ruled out the phenomenon being caused by cloud.
"There's no cloud, there's nothing to produce a rain echo, ... which we do see a lot, but not this particular shape," he said.
"They don't take on S shapes and things like that.
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