Thursday 12 November 2020

Anatomy of a storm

Last evening I happened to glance at my lightning tracker app and it seemed that Gotterdammerung was heading our way.

This appeared to be confirmed by the Weatherzone radar.
However nothing arrived, nor seemed likely around 0500 hrs.   A few strikes somewhere near Albury.

Radar image also boring.
Around 1500hrs on 12th there were a few rumbles heard to the NW.  Blitzortung showed a steady  line of flangs headed straight towards us.  This is 1520 hrs.
By 1528 it was getting very close.  White circles are strikes within the last 20 minutes, white crosses 20 - 40 minutes yellow cross 40 -60 and orange  60-80 minutes.
By 1535 the strikes had moved across to the Howe Flat with 16 strikes in the last 40 minutes.
My weather station recorded 10.8 mm at a rate of 63 mm/hr.  The peak rate was 164 mm per hour at which the gutters gave up the struggle.  In the 20 months we have lived here I have only had 4 rain rates higher than this!

 Showing the "hit or miss" of storm cells the BoM site at the airport recorded 2.8 mm and Gabo Is 1.0 mm.  A private WS in town has recorded 8.89 mm. 

The Victorian Weather radar shows another storm heading in this general direction but it may go to the North.
 

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