January 10th 2010 produced very deep convection and severe storms particularly in the lower Hunter Valley. Initially pulse storms developed over the mountains moving generally north. One storm near Putty exploded with the anvil repositioning at another equilibrium level.
The outflow from this storm conbined with a moist easterly eairstream to form an explosive severe storm near Jerrys Plains. The boiling updrafts looked like a volcanic explosion from as far as Sydney. Despite the relatively warm atmosphere, the steep lapse rates and the shear heights of the storm tops allowed for large hailstones to be spawned by these storms.

January 2010 provided some very impressive storm events - including one of the most significant storm episode in years - 27th to 28th January 2010. On the 27th January 2010, an outbreak of supercells organised along a dryline on the western part of the Central Tablelands. As it moved east into moist unstable atmosphere, the storms quickly became severe forming a line of significant supercells. Several of these supercells produced hook echos, likely an event never observed on Australian radar.
One of these storms exhibiting a hook echo developed northwest of Lithgow producing a split pair. The left mover intercepted and documented by Jimmy Deguara produced a well defined wall cloud. The storm remained well structured until its inflow was contaminated by another possible supercell to its immediate north. Evidence of very large hailstones from stripped leaves and smashed car windows in the region near the Cullen Bullen to Portland area may also have been attributed to the storm. This storm merged with a complex of supercells that tracked as a HP supercell complex on a direct course for Merriwa later that evening causing hail damage.
This was another severe storm that passed near Mudgee.

The next day more severe storms occurred in the same location but into the evening rather than mid afternoon. The lightning show was impressive.