Cinarra, freezing rain and sleet: what is it about?

Photo: With Office.

Last year we mentioned the terms cinarra, freezing rain and cellisca. Let’s look at their definitions today.

The cinarra, as indicated in the International Cloud Atlas online, is a “precipitation of very small opaque white particles falling from a cloud”. They are flattened or elongated particles; its diameter is usually less than 1 millimeter.

It is a frozen precipitation that occurs at temperatures between 0 and -10 degrees Celsius approx. The cinarra can come from strata or from fog. It never falls as a shower.

The freezing rain or subcooled, on the other hand, is rain whose drops have a temperature below 0 degrees Celsius. These droplets freeze when they come into contact with the ground, aircraft or other objects.

The cellisca It is a precipitation of translucent ice particles (they are spherical or have conical tips) that occurs in showers that come from a cumulonimbus. It is an intermediate stage, according to the Atlas, between granulated snow and hail.

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