Hey Petros!
Just letting you know that that chart is no record mate. I have seen it several times before
all RED. Quite amazing, and have seen the BoM write about supercell storms and tornadic storm potential as well. So it's a fair way off a record.
And here is the latest updated version of the thunderstorm chart for everyone from the BoM.
Australian Government Bureau of Meteorology
Victoria Regional Office
THUNDERSTORM FORECAST
Issued at 4:24 pm Thursday, 4 February 2010,
Valid until midnight on Thursday, 4 February 2010.
An active area of severe thunderstorms lies near Albury-Wodonga. Local embedded thunderstorms may still occur in areas outside the severe likely zone but they are only expected to result in heavy rainfall and this is covered by a separate severe weather warning.