Michael Thompson's Australian
Storm Chase Diary
5th December
2004 - Non Severe storm, Southern Highlands, NSW
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Pulse
type cell near Bundanoon
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Weak
storm near Bungonia
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It
had been an absolutely dreadful November,
with few storms and a complete lack of moisture whenever a weak trough
developed. I had taken five weeks annual leave and the first three had
slipped past stormless. I was desperate !
The storm drought
was broken on the 5th December when at last humid onshore winds were set
to penetrate inland, but more important be deeper than previous surface
winds. In many ways today was a demonstration of how critical moisture
is. On at least two occasions in November we had days with higher Lift
Index and CAPE, but no storms due to poor moisture depth - today's figures
would keep most chasers firmly tucked in bed - Lift Index bearly negative
at -1C to -2C and CAPE less than 500. However there was moisture and a
SE front working up the coast.
I chased with Steve
and we scored a reasonably lightning active cell near Bundanoon, and another
weak storm near Bungonia.
Map
below courtesy of Bureau of Meteorology

  
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