Mudge, NSW Australian right moving supercell


Given that the start of the season in the US is near, I thought it would
be ideal to mention one of the surprise events that occurred here

The conditions were briefly very ideal for quick supercell development
favouring right movers - not left movers! Of course we all know this is
the opposite of what we normally get.

With the slow advection of moist air against our drier hot westerlies at
the surface, it provided for the development of a triple point. Despite
some storms developing it was along this boundary (dryline**??) that the
storm struggled initially but literally exploded as it broke through the
cap. The slow movement of the boundary - and thence delayed intrusion of
the cooler air allowed for a brief window of opportunity for a storm to
last approximately an hour - and it was visually and on radar stronger
than the left mover!

Here are some of the pictures and report from the event:

Latest pictures here:

Some favourite pictures

Earlier storm

Here are eastern view of an earlier storm

These are the mature stage fo the supercell

Side anvil

These are just a few hailstones captured quickly on the edge of the core - unfortunately in the rush out of focus - video was fine. I do believe that hailstones in the main core were of the order 5 to 6 cm

Here are some of the video stills:

All stills


Jimmy Deguara
Thanks for the comments and taking an interest!

Chris, the storm you mention was just an example of a time when you can sit back and relax as the storm backbuilt towards us! With the setting sun, I have always enjoyed the surprising colours.

The Mudgee event was certainly one example of why deep layer shear is important in creating sculptured storms. Winds at 850hPa according to the models are from the east.

I would also like to give credit for the data being put together by Michael Bath as he has all the archives!


Jimmy Deguara
Nice shots Jimmy! That was a great storm and the hail wasn't too shabby either! Hope you have good luck with more storms this year.
Hey Jimmy,

Great shots. Where was that exactly? I am planning on coming down this summer (Our Summer) to the Brisbane area for some church stuff and surfing stuff.

What's it like there in late June in the Brisbane area?

Are you coming out this spring? My brother's and I will be out in late May.

Hope all is well.

Hi Brian,

Trying to remain on topic, Mudgee is situated about 3 hours drive NNW of Sydney region - for me 2 and half hours drive. It is one of the wine producing districts but not the best wines apparently:) Well this hailstorm would have devasted the wineries east of the township. Sydney is situated east of a dividing range of mountains (elvated plateau). The moisture in this case gradually worked its way over with the boundary shifting westwards with Mudgee on the other (dry) side of the range. It was alogn this boundary/dryline that the storm developed and once deep convection occurred exploded and began to clearly rotate.

I'll answer other questions offline I guess:)


Jimmy Deguara