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Storm Chase with Microbursts near the Richmond Range: Sunday 20th November 2005
Report compiled by Michael Bath

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

Shear was rather poor on this day and low level moisture a bit marginal. Upper temperatures were quite good, but short lived cells were all that were expected today.

Dave Ellem and I headed out and arrived just west of Casino about 1.30pm. Storms were already active on the eastern parts of the Northern Tablelands, and a new cell had gone up on the Richmond River just to our west.

Base features became quite interesting and had it not been for anvil cloud from storms further west, may have organised a little further. Strong looking updrafts formed on the cell's southern side along with CG lightning.

Heavy rain with a microburst soon developed. Seeing as though it was close to the Bruxner Highway we decided to head west under the precipitation to see if any hail was falling. Some very large drops were observed with moderate rain but the storm was already dying by the time we passed under it.

From the Mallanganee lookout we watched a small cell develop a few kilometres to the SW. The storm itself was not impressive but the precipitation shaft sure was! It was very dramatic to see a nearby microburst from an elevated position.

After this cell died, some other nice updrafts formed to the north on the Border Ranges, but it was all over locally and we called it quits soon after 4pm.


From Bureau of Meteorology

  • Grafton local scale loop 2330z to 0700z 20/11/2005 (10.30am to 6pm local time)

    Satellite Images

    From Weatherzone and MODIS: Land Rapid Response System

    20/11/2005 0300z 2pm local

    00z 01z 02z 03z 04z 05z 06z 11am to 5pm local

    Analysis Charts

    From Bureau of Meteorology

    20/11/2005 06z

    GFS Model Analysis

    From NOAA 20/11/2005 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: 200511-05.htm
    Updated: 13th January 2006
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