Supercells SW of Sydney 22nd March 2014

0322jd062 0322jd070Chased the Southern Tablelands and fater initially targetting further south near Marulan that the deeper moisture was further north with slightly less shear. Heading back towards Picton, I was able to circumnavigate the first main cell which was to become a supercell. It exploded complete with backshear. Trying to get in front for great contrast meant I went all the way to near Bulli and had no choice but to head up Picton Road through the now supercell! The southern side shear was spectacular as well and I experienced most likely up to 3cm hailstones. But I made it back to the northern portion and western portion of developing cells and original cell core punched. I noted after some time that radar did not seem to fit the development so I quickly headed north realising that outflow had prompted the development of another cell on the forward flank near Campbelltown. After quick shots of the base here, I was into the Sydney suburbs and made it in front near the Georges River in between trees for some timelapse. Noting this storm eventually was lining and bowing out (and it rapidly weakened), I was back heading SW towards Appin for another cell. But it began to collapse after being severe warned! Another cell was heading towards Bowral and Moss Vale. I noted the base and new development on the northern side and maintained position. Alas a split on radar! Jeff Brislane arrived and we moved to a position only 2km south and when we arrived, the supercell had just illuminated its classical supercell structure! Timelapse was again in order. Some nice lightning bolts and anvil crawlers occurred from this cell but it was the structure and rotation that was evident that made for an excellent end to the day! It has been the year for the Southern Tablelands to fire in the second season ( or was it the first!)

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Front of the supercell from near Bulli

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Southern side shear anvil!

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New developing base of the new developing cell behind the original supercell.

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This base rapidly developed and organised - this development was confirmed and timelapsed by Jeff Brislane.

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Georges River - I have timelapse of this base and impending hailshaft. Golf ball sized hail was reported at Menai apparently from the Bureau reports.

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Back near Campbelltown

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Classic supercell structure emerges from the split! Scud rising into the base!

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29 thoughts on “Supercells SW of Sydney 22nd March 2014

  1. Con Marathos

    Excellent photos and report Jimmy. From here in Parramatta that Picton storm certainly had some great structure with boiling updrafts , and showing some nice tiered features as it gusted out.

  2. Ben

    Fantastic shots there everyone!

    Jimmy, good you got some photos of the Sydney storm. I had issues pulling up for photos, and I took heathcote road and got stuck in the core, getting some hard 2cm stones. Had a nice shelfy on it!

    Also got the Appin storm

  3. Ben

    I tried to get closer to the storm, but it fell apart and views became shoddy. However, seems I got the same lightning bolt as you Jimmy with the CG!

  4. Harley Pearman

    I am going to post this photo of the supercell from Castlereagh Road just north of Penrith. I was with Colin and shot this image looking south east. In addition to the visible base, the updraft tower is impressive and so is the anvil. I struggled to get this into the frame but while other chasers were under it, we were on a separate storm that had a very interesting base. We had excellent visibility of the supercell looking south and south east. The updraft tower was solid and maintained it structure and shape for some time.

  5. Harley Pearman

    Here is one more image. Th updraft towers were incredible and solid. This was not our target storm but it certainly made an impression in the sky for much of the afternoon.

  6. Jimmy Deguara

    Hi guys, the supercell structure covered is quite impressive and good to see different phases of the supercell including the explosive updrafts! Harley were this updrafts of the initial supercell of the redeveloped one after it passed over Campbelltown? I am thinking the former. I can tell you very rarely do you egg opportunities to go right around a supercell and are able to egg out in front again!

  7. Jimmy Deguara

    Hi guys, the supercell structure covered is quite impressive and good to see different phases of the supercell including the explosive updrafts! Harley were this updrafts of the initial supercell of the redeveloped one after it passed over Campbelltown? I am thinking the former. I can tell you very rarely do you egg opportunities to go right around a supercell and are able to egg out in front again!

  8. Jimmy Deguara

    Con, that is a rounded base – where was the supercell at that stage ie on radar? Your updraft explosion seems to be at the same time as Harley's too.

  9. Jimmy Deguara

    Con, that is a rounded base – where was the supercell at that stage ie on radar? Your updraft explosion seems to be at the same time as Harley's too.

  10. Jimmy Deguara

    Ben the shot of the base is similar to mine – you may have been fuether north near Appin – I was virtually under it. I basically got going and only stopped briefly when I realised visually 20 minutes ahead of radar that it was transitioning into a new cell!!

  11. Jimmy Deguara

    Ben the shot of the base is similar to mine – you may have been fuether north near Appin – I was virtually under it. I basically got going and only stopped briefly when I realised visually 20 minutes ahead of radar that it was transitioning into a new cell!!

  12. Jimmy Deguara

    By the way the shot I have in the report of the supercell with river in foreground was shot under a tree – not something I recommend with winds picking up as the supercell was becoming linear and bowing out. I had one eye on the storms and glimpses on branches etc – it was a pain but I had little choice in this area.

  13. Jimmy Deguara

    By the way the shot I have in the report of the supercell with river in foreground was shot under a tree – not something I recommend with winds picking up as the supercell was becoming linear and bowing out. I had one eye on the storms and glimpses on branches etc – it was a pain but I had little choice in this area.

  14. Harley Pearman

    The images I took are of the initial supercell between 2 and 4 pm. These are some of the best explosive updrafts I have seen here. They were constant and sustained as well.

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