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Old 15-11-2013, 09:18 PM
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Cracking storm Sydney

We're experiencing a cracking - or should that be crackling - storm through the Sydney hills at the moment, sounds like there's no roof or windows anymore

Is this normal for this time of year? It wasn't even that warm today

At least the Celestron power tank and included torch have a new, secondary purpose
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Old 15-11-2013, 10:24 PM
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AG Hybrid (Adrian)
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Yeah. Its not unusual to have a warm/hot day followed by a rain storm in the evening here in Sydney in summer. The northern beaches tend to get a lashing during this period.
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Old 15-11-2013, 10:39 PM
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Blame me- I just bought a new scope!
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Old 15-11-2013, 11:15 PM
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some serious clouds in that box Laurie
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Old 15-11-2013, 11:17 PM
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Quote:
Originally Posted by AG Hybrid View Post
Yeah. Its not unusual to have a warm/hot day followed by a rain storm in the evening here in Sydney in summer. The northern beaches tend to get a lashing during this period.
Looking at the radar, it's almost as if it rolled in off the ocean and over the beaches
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Old 15-11-2013, 11:51 PM
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Quote:
Originally Posted by Camelopardalis View Post
Is this normal for this time of year? It wasn't even that warm today
Hi Dunk,

Thunderstorms such as this in Sydney are not only normal, but have been conspicuous
in their absence over the past few months.

As you can appreciate from the recent bush fires, with the coming of tonight's shower
there are many us who are breathing a collective sigh of relief. Having said that,
all it takes is for a couple of hot days again and much of the moisture can be gone.

A common meteorological phenomena in the warmer Sydney months is the
"Southerly Buster" where after a hot day and typically either in the afternoon
or evening, there is an abrupt southerly change with strong winds.

The temperature can plummet 10C to 15C in less than an hour.

Sydney typically receives about five a year.

However, tonight's storm is not a Southerly Buster.

You can read more about Southerly Buster's here -
http://www.bom.gov.au/social/2011/10/southerly-busters/
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  #7  
Old 16-11-2013, 12:30 AM
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Sydney Storm

A lot of sheet lightning but this shot captured some interesting squiggles.

Lightning was seen from all directions with this shot looking North from Concord.

Chris
Attached Thumbnails
Click for full-size image (Small_7682.jpg)
149.0 KB38 views
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Old 16-11-2013, 05:35 AM
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Originally Posted by Larryp View Post
Blame me- I just bought a new scope!
It is your fault Laurie !!! How do you like the Tak Teaser120 so far?

Gary, you just reminded me of my sailing days on Lake Illawarra and Sydney Harbour, when during a race a Southerly Buster would come along and flatten the whole fleet.
Then a few minutes later all boats would be up again enjoying the strong steady wind behind the first front.
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Old 16-11-2013, 02:21 PM
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Dunk thunderstorms are normal from spring to Easter.

We haven't had a good one for a while; in other years they can be two a week.
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Old 16-11-2013, 04:37 PM
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Thanks guys, the garden needed the watering, so look forward to a stormy future

Great photo Chris!
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Old 16-11-2013, 04:43 PM
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Originally Posted by Camelopardalis View Post
Great photo Chris!
Thanks Dunk
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Old 17-11-2013, 12:38 PM
malau (David)
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Quote:
Originally Posted by Occulta View Post
A lot of sheet lightning but this shot captured some interesting squiggles.

Lightning was seen from all directions with this shot looking North from Concord.

Chris
Nice photo

How did you take it? I was trying on Friday night but failed...
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  #13  
Old 17-11-2013, 01:13 PM
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Quote:
Originally Posted by malau View Post
Nice photo

How did you take it? I was trying on Friday night but failed...
Thanks David

I used a Lightning Trigger that catches the flash and triggers the camera.

BlackWidow [Mardy] is an IIS member and sells the unit I have been using.

If you are trying manually, close the aperture down about half way, drop your ISO and open the shutter to between 20 to 30 seconds. And make sure you are using the lens in manual focus mode.

Chris

Should have put my shooting data as well - ISO 640; shutter 1/6 sec; aperture 3.2; lens Canon 24-70 @ 24mm; 5D III

Last edited by Occulta; 17-11-2013 at 01:33 PM. Reason: Data added
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