Author Topic: Eastern NSW Storms 22 - 24 January 2007  (Read 16014 times)

0 Members and 1 Guest are viewing this topic.

Offline Michael Bath

  • storm chaser
  • Administrator
  • Wedge tornado F5
  • *
  • Posts: 1,602
  • Gender: Male
    • Australian Severe Weather
Re: Eastern NSW Storms 22 - 24 January 2007
« Reply #15 on: 26 January 2007, 03:06:31 AM »
Casino observations suggest 33/20 is a fairly good representation of the surface conditions prior to the severe storm developing yesterday. Plotted with the 00z Brisbane sounding, it certainly shows an unstable atmosphere, but marginal. I suggest that upper level temps would be lower in the Northern Rivers - given the storm was six hours later and further south.  Shear profile was not the best but the dry upper levels would have assisted some strong updrafts. The regular lightning observed certainly reflects this.

Brisbane sounding:
http://australiasevereweather.com/storm_news/2007/soundings/2007012400brisbane.png

The very moist lower 3ks of the atmosphere and the slow movement of the storm resulted in some impressive rainfall rates and totals. The highest reported this morning is 50mm from Fairy Hill which is just north of Casino.

The Casino AWS measured a gust of 78km/h at 5.17pm.

The anvil was quite strong for a brief time.



MB

Location: Mcleans Ridges, NSW Northern Rivers
Australian Severe Weather:   http://australiasevereweather.com/
Lightning Photography:   http://www.lightningphotography.com/
Early Warning Network: http://www.ewn.com.au
Contact: Michael Bath

Offline Michael Bath

  • storm chaser
  • Administrator
  • Wedge tornado F5
  • *
  • Posts: 1,602
  • Gender: Male
    • Australian Severe Weather
Re: Eastern NSW Storms 22 - 24 January 2007
« Reply #16 on: 26 January 2007, 03:50:02 AM »
For your interest my shots and Wade Laube's shots are online with audio at

http://www.smh.com.au/multimedia/national/western-suburbs-storm/index.html


Thanks Nick - terrific weather shots as always. Were you in the car for that close bolt, and was it just hand held ?
Location: Mcleans Ridges, NSW Northern Rivers
Australian Severe Weather:   http://australiasevereweather.com/
Lightning Photography:   http://www.lightningphotography.com/
Early Warning Network: http://www.ewn.com.au
Contact: Michael Bath

Offline nmoir

  • Elephant Trunk F2
  • *
  • Posts: 200
  • Gender: Male
  • "busting chases since 1999"
    • Oculi.com.au
Re: Eastern NSW Storms 22 - 24 January 2007
« Reply #17 on: 26 January 2007, 02:23:19 PM »
I was in the car , and braced the camera between steering wheel and windscreen with a 30sec exposure
Nick Moir
Photographer
The Sydney Morning Herald
and www.oculi.com.au

Offline vrondes

  • Multi-vortex F1
  • *
  • Posts: 77
Re: Eastern NSW Storms 22 - 24 January 2007
« Reply #18 on: 26 January 2007, 04:56:59 PM »
Potent and atmospheric photos by everyone. In Parramatta you could hear the distant thunder and see the burnt orange flickers of lightning to the northwest . In anticipation of some activity coming this way i waited , only to capture the odd lightning strike or two, all heavily veiled in smoke from the day's fires to the north.
Cheers, Con.

Offline Michael Bath

  • storm chaser
  • Administrator
  • Wedge tornado F5
  • *
  • Posts: 1,602
  • Gender: Male
    • Australian Severe Weather
Re: Eastern NSW Storms 22 - 24 January 2007
« Reply #19 on: 28 January 2007, 08:17:12 AM »
During the trip to Grafton yesterday, spotted extensive tree damage on the Summerland Way about 15ks south of Casino. An area about 5km N-S was affected. Given how fresh the damage was I assume it was from the storm on the 24th.



MB
Location: Mcleans Ridges, NSW Northern Rivers
Australian Severe Weather:   http://australiasevereweather.com/
Lightning Photography:   http://www.lightningphotography.com/
Early Warning Network: http://www.ewn.com.au
Contact: Michael Bath