SUN HALO

20150201-IMG_8716When you see these Halos,it’s a foreteller of rain coming usually within 24 hours.
The arc is created by billions of tiny plates of ice. The plates are hexagonal shaped & refract the light.
If you were to look at a typical rain storm cross section,it would be composed of water droplets ranging in size from small (outer edge) to large (centre) & to small again on the trailing end.
The very smallest droplets precede the storm. They can be hundreds of miles from the centre of the storm. The fine vapour is at a high altitude & so freezes. They freeze into transparent hexagonal plates. These plates act in the same fashion as prisms & bend the light.
So when you see these arcs,it’s Mother Natures way of telling you to get out the rain gear!

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