Wow, this was definately a strong tornado and as you suggest a likely F2 intensity considering the damage it has done.
Tornado
Storm Video · Tornado
Re: Clip of Auckland NZ tornado
More storms near Auckland, NZ
Storm Clean-up begins after Auckland tornado
4 May 2011 · Auckland, NZ
Storm Tornado tears through Auckland suburbs
3 May 2011 · Auckland, NZ
Re: Clip of Auckland NZ tornado
3 May 2011 · Auckland, NZ
Clip of Auckland NZ tornado
3 May 2011 · Auckland, NZ
All storm reports from Auckland, NZ →
Also on 3 May
SE QLD – NE NSW Storms, May 3 2011
3 May 2011 · Sawtell, NSW
Storm Tornado tears through Auckland suburbs
3 May 2011 · Auckland, NZ
Re: Clip of Auckland NZ tornado
3 May 2011 · Auckland, NZ
Re: Tornado Alley Chasing 2011
3 May 2011 · Tornado Alley, OK, US
Clip of Auckland NZ tornado
3 May 2011 · Auckland, NZ
Re: Tornado Alley Chasing 2011
3 May 2011 · Winters, Texas, TX, US
Re: Tornado Alley Chasing 2011
3 May 2011 · Tornado Alley, OK, US
Shepparton 156km/h March 2010 Storm – a 10 min doco
3 May 2010 · Shepparton, VIC
NSW Coastal Showers, Storms, Flash Floods and Waterspouts : 2 – 4 May 2009
3 May 2009 · NSW coast
Tornadoes and large hail reported
3 May 2007 · Texas, TX, US