Over the past few years videos of 'strange' phenomena in Singapore like a flashing orange sky, as well as smoke and rumbling sounds that seem to come from nowhere, have surfaced and resurfaced.
Sightings of these were so intense in August this year that the Singapore Civil Defence Force had to despatch fire engines to four locations. They found nothing.
On Oct. 13, YouTube user 'udip21' uploaded yet another video of a flashing orange sky, a bit like a beautiful sunset... a very restless, beautiful sunset:
Here's an explanation: flaring.
According to ExxonMobil, flares are used in refineries and petrochemical facilities to safely burn excess hydrocarbon gases that cannot be recovered or recycled. It's an alternative to releasing the vapour directly into the atmosphere. "During flaring, excess gases are combined with steam and/or air, and burnt off in the flare system to produce water vapour and carbon dioxide," the company writes on its website. The process is reportedly similar to the burning of liquefied petroleum gases, which some of us use as fuel for home cooking. Flaring is minimised as much as possible, but it can occur during a start-up and shut-down of facilities for maintenance purposes, and also during unplanned operational interruptions such as power outages. And as Singapore is only a short ferry ride away from its surrounding islands, it's likely that the physical impact of flaring on say, Pulau Bukom can be observed from various parts.
These are the observations that can be made when there's flaring going on — as you can see, they're very similar to the descriptions provided by the public:
Other similar (and some, stranger) sightings in the skies of Singapore:
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