Michael Thompson's Australian
Storm Chase Diary
4th January
2004 - Lightning show from non-severe storm, or the " Almost my last
ever lightning shot chase "
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Taken
at 28mm (eq) this bolt is closer than it appears. Oak Flats, NSW.
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Take
away the lightning and this storm would rated about a 1 out of 10 on the
interest scale. When I played back the radar loops later that night I
was amazed at the pitiful shower that animated across the screen.
As
it was it could have been my last ever lightning photo, read on for the
full story.
It
had been a hot an humid day, but the humidity was a cruel thin layer associated
with a seabreeze, as far as being a moisture source for storms it did
not rate, there was a weak trough, but the lack of moisture was keeping
things dry. Around midday small convection showers about 150 kms further
down the coast took my interest, there was also a weak front moving up
the coast aiding the development of these showers. The front passed my
area about 6pm, not long afterwards high based cumulus started developing,
but nothing of note. Around dusk I noted some showers had developed about
100km west, but they looked mositure starved and struggling. By now I
had resigned myself to a quite night at home. I walked outside just after
dark to see lightning immediately to my west. I grabbed the camera gear
and drove around the corner and took three 1 minute exposures.
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The
first photo I took. Bolts grounding near Albion Park, NSW
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Second
photo and closer this time, Oak Flats. NSW
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During the
third exposure ( large photo at top of page ) it started to rain. I quickly
grabbed my gear and retreated to the car, cursing my bad luck as some
lovely close bolts rained down. The rain eased so I decided to grab at
least another photo, as I walked back to the lake edge I looked at an
inviting sheltering tree, not overly tall and lower than the ridge immediately
behind me, I even did some mental sums - ' my car is a better target as
its metal..... the tree is only small.... but tree is exposed '. I even
started to walk towards the tree, but changed my mind due its exposure
and walked about 10m ( 30ft ) further up the shoreline. The next photo
below is my fourth photo, and what may have been a last for this chaser.
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Photo
4, same 1 min exposure, but look at the light..and what is that
orange stuff?
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Photo
of the tree taken the next day
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Part of the
way through photo 4 and bang !!! As my eyes came too from the sudden flash
I thought to myself that was a close one, imagine my surprise, shock,
horror when I looked at the tree to see it smolder than spring into fire,
the same tree had contemplated sheltering under, albeit briefly. The photo
has a funny orange glow at the top right, one possible cause is that I
had to interrupt the exposure due to rain returning, the Noise Reduction
may have still been working away. I don't know, perhaps it is something
to do with the tree being struck just 30 ft to my right.
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One
last photo in a new location as the storm decays rapidly over the
ocean.
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Small
track marks down the tree.
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There was
no hair standing on end, no sense of the electrical potential build up,
no funny cracklings. I guess I was lucky that I did not receive any secondary
shocks being that close. The tree was growing into saturated salty soil,
perhaps the earth was just too good.
The storm
moved out to sea and decayed very rapidly.
  
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