Sunday, March 30, 2008

Once in a lifetime weather phenomenon in Sabah

12 OCTOBER 2007 (FRIDAY) - Halo Phenomenon

Halos are caused by ice crystals in cold cirrus clouds located in the upper troposphere. The particular shape and orientation of the crystals are responsible for the type of halo. Light is reflected and refracted by the ice crystals and may split up into colours because of dispersion, similar to a rainbow.

28 MARCH 2008 (FRIDAY) - Rain Ice Phenomenon

The phenomenon, known as hail, occurs when supercooled water freezes. Hail is a form of precipitation, which consists of balls or irregular lumps of ice (hailstones).

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