Essay Archive - Haloes Forecast Storms
Haloes Forecast Storms
NEWSCIENCE
If you know where and when to look, you can treat yourself to a colourful
display of atmospheric haloes, spots and pillars. These images can tell
you something about the clouds overhead and possible changes in the
weather.
All of these images are created by light shining through cirrostratus
clouds. These clouds occur at an altitude of 6,000-12,000 metres. They
appear as a thin sheet or layer (strata) that is pure white. The layer of
cloud is so thin (only 100-450 metres) that is doesn't obscure the sun or
moon, so you should be able to see your shadow.
Cirrostratus is mad....
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