![Tornado Canterbury New Zealand 23rd February 2014](http://www.extremestorms.com.au/wp-content/uploads/2014/02/tornado_canterbury_New_Zealand_23rd_February_2014-580x388.png)
A tornado associated with a supercell has hit a region near Canterbury New Zealand yesterday. Hail drifts as well as large hailstones affected the region. Damage was reported in a rural area.
http://www.3news.co.nz/Hail-storm-tornado-hits-Canterbury/tabid/423/articleID/333278/Default.aspx
Does anyone know the F-rating if the tornado?
Does anyone know the F-rating if the tornado?