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Lismore to Bangalow Severe Storm Chase: Tuesday 29th November 2005
Report compiled by Michael Bath and Dave Ellem

If you have any photos or video of this event, please email.

Rapidly rotating thunderstorm near Lismore timelapse [13 seconds - 1.69mb WMV]

Instability was not all that high with CAPE about 1,000 and LI -3. The windshear was excellent due to a surface and upper low over NSW. Storms would likely head SE with stronger cells towards the east.

A thunderstorm had developed by 1pm in the hills west of Kyogle.

Dave Ellem and I headed off initially expecting the storm to head generally towards Lismore and south of there. This was certainly the case during the drive to Wyrallah.

A couple of close CGs struck just after we got out of the car at Wyrallah from a new storm developing south of us. However the main interest was with the storm approaching Lismore.

We moved to near the Lismore Airport and watched the base take on a much stronger and organised appearance. It was soon clear this cell had become a left mover and was now tracking eastward. Some heavy rain was occurring and a few CGs hit on the hills a few ks away.

The chase continued NE along the Lismore Bangalow Road to keep ahead of the updrafts. The storm had a severe appearance to it and it was hard to concentrate on the driving while keeping ahead of it, and thinking of good vantage spots.

It maintained its highly organised severe appearance for almost an hour. We observed base rotation several times, and hail was quite obvious and later confirmed. The anvil was thick though did not extend too far east.

Rapidly rotating thunderstorm near Lismore timelapse [13 seconds - 1.69mb WMV]

There was not much lightning after the initial CGs at Lismore. The Bureau of Meteorology did not issue a severe thunderstorm warning on this isolated intense cell.

We passed through Bangalow and then to the lookout at Saint Helena. The storm persisted but had weakened by 3.45pm. We drove back west under the core and experienced some heavy rain and a little bit of small hail.

The line of activity along the coast was quite impressive from a vantage point at Clunes. Almost all local activity died off by about 6pm.


From Bureau of Meteorology

  • Grafton local scale loop 0030z to 0900z 29/11/2005 (11.30am to 8pm local time)

    Satellite Images

    From Weatherzone

    02z 03z 04z 05z 06z 1pm to 5pm local

    Analysis Charts

    From Bureau of Meteorology

    29/11/2005 06z

    GFS Model Analysis

    From NOAA 29/11/2005 06z analysis

  • Liftex Index
  • CAPE
  • Relative Humidity surface
  • Relative Humidity 850 hPa
  • Relative Humidity 700 hPa
  • Relative Humidity 600 hPa
  • Relative Humidity 500 hPa
  • Relative Humidity 300 hPa
  • Temperature (C) surface
  • Temperature (C) 850 hPa
  • Temperature (C) 700 hPa
  • Temperature (C) 500 hPa
  • Temperature (C) 300 hPa
  • Winds (knots) surface
  • Winds (knots) 925 hPa
  • Winds (knots) 850 hPa
  • Winds (knots) 700 hPa
  • Winds (knots) 500 hPa
  • Winds (knots) 300 hPa
  • Winds (knots) 200 hPa

    Document: 200511-07.htm
    Updated: 24th June 2006
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