Papatoetoe Tornado - June 19

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spwill
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Re: Papatoetoe Tornado - June 19

Unread post by spwill »

Awhituobs wrote: Sun 20/06/2021 11:26 amazing footage
good you were able to work out damage width Simon
100m is a really decent tornado for NZ!
But very hit and miss damage within the damage zone, the more concentrated line of damage was more narrow.
The East Tamaki Tornado last year on the 27th of June was only about 5 km away from yesterdays event.
darcyplumb
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Re: Papatoetoe Tornado - June 19

Unread post by darcyplumb »

Looks like a decent wedge to me. Very impressive structure with obvious power flashes.
Awhituobs
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Re: Papatoetoe Tornado - June 19

Unread post by Awhituobs »

Auckland has been getting a lot of Tornadoes lately ...remember the Hobbsonville one too was bad
Awhituobs
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Re: Papatoetoe Tornado - June 19

Unread post by Awhituobs »

that South Auckland area..you will have the Bombay hills/ Hunua ranges enhancing the surface NE ahead...funnelling it...down from Cleveland..then you have a West or NW wind change being funnelled in from around the Waitakere ranges...i.e lots of surface wind shear...a meso scale computer simulation would be interesting
Cyclone Tracy
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Re: Papatoetoe Tornado - June 19

Unread post by Cyclone Tracy »

Just noting for future reference.

Compared a few obs from 27 June 2020 & 19 June 2021 for South Auckland from 8am to 9am.

Dew point = both 14c
Temp 500 hPa = both -20c
surface air pressure = both 1010 hPa
spwill
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Re: Papatoetoe Tornado - June 19

Unread post by spwill »

Some other nearby damaging tornadoes are Ramarama, September 2009 , Albany May 2011 and Avondale September 2011. Auckland is a very small land area so is very much a hot spot for tornadoes.
Awhituobs
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Re: Papatoetoe Tornado - June 19

Unread post by Awhituobs »

seems to be a lot more frequent since 2009 than what I remember prior...there was always the occasional small one (Otahuhu has been a spot in the past)
don't forget the Drury Flat one too ,2020
and Hobsonville 2012

warmer ocean temperatures, which we have been getting -> more energy (dew point) -> stronger and longer lasting tornadoes
Last edited by Awhituobs on Sun 20/06/2021 18:00, edited 1 time in total.
ScottyD
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Re: Papatoetoe Tornado - June 19

Unread post by ScottyD »

Just had a look at the distance that this has traveled. From reports and pictures of damage in Omana Road Papatoetoe, to the Containers in Wiri, that's 3.5km. Would be interesting to see a track map of the damage.
spwill
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Re: Papatoetoe Tornado - June 19

Unread post by spwill »

Awhituobs wrote: Sun 20/06/2021 16:07 seems to be a lot more frequent since 2009 that what I remember...there was always the occasional small one (Otahuhu has been a spot in the past)
don't forget the Drury Flat one too ,2020
and Hobsonville 2012

warmer ocean temperatures, which we have been getting -> more energy (dew point) -> stronger and longer lasting tornadoes
There was the Devonport tornado Oct 2013 which was well covered on this forum.
Awhituobs
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Re: Papatoetoe Tornado - June 19

Unread post by Awhituobs »

that is a lot since 2009
tich
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Re: Papatoetoe Tornado - June 19

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Last edited by tich on Mon 21/06/2021 17:23, edited 1 time in total.
Awhituobs
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Re: Papatoetoe Tornado - June 19

Unread post by Awhituobs »

have seen a tik tok video on the SW motorway
next to the shipping containers in land port
cars are stopped as the tornado passes in front of them
and you can see the shipping containers blowing in the air!
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Thunder081
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Re: Papatoetoe Tornado - June 19

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Awhituobs wrote:have seen a tik tok video on the SW motorway
next to the shipping containers in land port
cars are stopped as the tornado passes in front of them
and you can see the shipping containers blowing in the air!
Here's the link to it: https://vm.tiktok.com/ZSJXPRSXv/

At 12 seconds in you can see the shipping containers blowing in the air

Sent from my TA-1054 using Tapatalk

Wellington southerly front timelapse: www.youtube.com/watch?v=MBl3hsuIg2Q
Awhituobs
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Re: Papatoetoe Tornado - June 19

Unread post by Awhituobs »

that's the one!
incredible footage
great to see that the cars stopped
in the USA they would have carried on driving and then got blown off the road?!
spwill
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Re: Papatoetoe Tornado - June 19

Unread post by spwill »

Interesting clip, cars are easily picked up by tornadoes so a close call for those people on the southwestern at the time it crossed..
mikestormchaser
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Re: Papatoetoe Tornado - June 19

Unread post by mikestormchaser »

What was the scale of it do you think? Ef1? Has to be on the scale surely? And was the storm supercell or more landspout stuff? No large hail reports to go with it for supercell identity?
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Nev
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Re: Papatoetoe Tornado - June 19

Unread post by Nev »

Looks more like an EF2 to me, i.e. winds around 180-220 km/h.
spwill
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Re: Papatoetoe Tornado - June 19

Unread post by spwill »

mikestormchaser wrote: Mon 21/06/2021 10:30 What was the scale of it do you think? Ef1? Has to be on the scale surely? And was the storm supercell or more landspout stuff? No large hail reports to go with it for supercell identity?
It will be supercell type process that produced the tornado, I would say the Cb was not high enough and perhaps too short lived to get the large hail process going.
Some more photos from Saturday afternoon, I looked at only a couple of streets that were affected.
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spwill
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Re: Papatoetoe Tornado - June 19

Unread post by spwill »

This clip shows wedge tornado.
https://www.youtube.com/watch?v=uJ8kUKpptWk
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Re: Papatoetoe Tornado - June 19

Unread post by Awhituobs »

tracknado.png
that guy actually sounds like you Simon lol
It might have even been a multi vortex wedge?

I did a quick track map
2km longish?, would have only taken 3 minutes to travel that?
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Nev
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Re: Papatoetoe Tornado - June 19

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Stuff has some quite good drone footage showing some parts of the damage (looks like a war zone).
https://www.stuff.co.nz/national/crime/ ... oned-homes

Below are a couple of my estimated tornado track-maps based on damage reports, which range from Omana Rd in Papatoetoe to the north and Pallant St in Manurewa to the south. That's a distance of at least 6.3 km.

Akld June 19 Tornado Track-map sml.jpg
Akld June 19 Tornado Track-map med.jpg
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Awhituobs
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Re: Papatoetoe Tornado - June 19

Unread post by Awhituobs »

oh wow, so it went a lot further than I thought
I would have expected though more damage occurred south of those shipping containers
spwill
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Re: Papatoetoe Tornado - June 19

Unread post by spwill »

A survey would establish the full track, there may be light unreported damage both ends on the path. I think this is the largest NZ tornado to be caught on camera. In the above clip how wide is the damage path ?
Cyclone Tracy
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Re: Papatoetoe Tornado - June 19

Unread post by Cyclone Tracy »

New clip and angle.

Awhituobs
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Re: Papatoetoe Tornado - June 19

Unread post by Awhituobs »

woa
surely multi vortex
incredible speeds the visible condensation clouds are moving when you consider the distances and scale