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Therese Fougman, a meteorologist at SMHI, explains the spontaneous light show some Gothenburg residents were invited to during the morning.
– Halofenomas usually appear when there are ice crystals in the air. Depending on the weather, it may look different. They can be seen, for example, as pillars of light, but also as rings around the sun that create various “bi-suns,” says Therese Fougman.
He also says that halophenomas can indicate different things depending on the season.
– If it appears in summer, it may mean that the rain is on its way. In the summer, high cirrus clouds come first and this is what may indicate that it will rain in a few hours.
– What you see now has more to do with low clouds, that the fog clears and that the chair is down. It is not that unusual during the winter months precisely because there are so many ice crystals in the air that refract sunlight.
Is there anything special you can do to see these phenomena?
– Not really. The sun must be at the right angle and there must be the right kind of clouds and ice crystals in the way, says Therese Fougman.
At the same time, he admits that Sunday contributed to creating the right conditions to glimpse these refractive phenomena.
– When there are such incoming fronts, tall thin sea clouds, it may be easier to see it.
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