The 4th December 2007 was one of the few decent severe thunderstorm days of the 2007/08 season in the NSW Northern Rivers region after the incredibly active and destructive October storms.

The day started off with fairly weak and dryish looking convection along the Richmond Range before a decent thunderstorm organised southwest of Grafton. The storm tracked fairly slowly northwards over several hours cycling into the severe category several times, before dissipating near Casino.

At times there were characteristics of a supercell but these were short-lived. A storm chase between Casino and Grafton provided some nice photo opportunities.
Full sequence of this event.

Severe thunderstorms affected the inland parts of New South wales on the 26th November 2005. Widespread thunderstorms remained mostly high based and made for microburst conditions and wind damage across the region. The activity merged into a lightning active system during the night hours with periods of very intense lightning bolt activity. Some heavy falls were reported across the northern NSW as well as some hailstorms. Full sequence of this event.

After an active day with tornadoes in Kansas, the 23rd May 2007 saw storms erupting in the Texas Panhandle including the threat of supercells and strong tornadoes. What amalgamated were training supercells - one supercell followed by another traversing over the same region. Some very large hailstones were reported to the size of base balls or larger as well as some high precipitation totals - up to 11 inches on the old scale (275mm). This caused some major flash flooding in low lying areas. A few tornadoes were also reported across the northeastern Texas Panhandle region. Full sequence of this event.

October began with an active pattern over the northeast NSW and southeast QLD region. However, it was the north east of NSW that scored major direct hits. The most significant supercell occurred on the 9th October 2007. This storm was the left mover from a split pair and made a direct path as it rapidly approached Lismore. Although the northern parts of Lismore were worst hit, the whole district was affected as the storm powered on towards the Brunswick Heads area. Hail to the size of cricket balls smashed house and car windows causing widespread damage. This storm left an insurance bill well into the tens of millions of dollars. Feel free to find out more about this Lismore hailstorm event.

The 16th January 2008 severe storm developed reasonably explosively. From a better perspective at Prospect, the circular base structure indicated the storm attempted to organise for at least 40 to 50 minutes over the western suburbs. The result was strong downburst winds achieving severe criteria, large hailstones probable about 2cm in diameter and extremely heavy rainfall. The hail as per usual was very localised and intense when it fell at one point. The damage caused was just not welcome particularly since it was one of the few storms to hit the same region affected by the western Sydney hailstorm December 9 2007.

The 17th December 2005 saw widespread supercells develop across eastern and north eastern NSW. The storms dumped large hailstones in the region near Gloucester and Taree whilst areas further north largely missed out on much of the activity due to drier intruding.

Meanwhile, a violent high precipitation supercell produced extreme straight line winds and very large hailstones on the north coast. Extensive damage occurred between Lismore and Casino.