Bass Strait Jet Plume Clyve Herbert |
Photo - C Herbert (ASWA Archive) |
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| Okay, I have to admit
it...I do watch grass growing!! especially after several years of drought. Green
grass is therapeutic! especially with daisies and buttercups. But seriously........a cold
outbreak had affected Victoria on this day (August 99). Typically, Bass Strait was
bubbling with cold air cumulonimbus. They sailed merrily across from west to east -
and that's where they stayed all day. About 1400 something odd was happening to the distant cold air Cb group. Over a period of just maybe 3-4 minutes, a plume shot almost twice the vertical height of the parent Cb (weird stuff!!). I had never seen anything like this before! My brain tossed it around for days after - the vision stuck.. My only explanation was that a small part of the Cb broke through a stable layer to enter a much colder layer above, allowing the plume to continue upwards where conditions may have been saturated for ice. It's things like this we should all look for and ask why?????? |
