South Island Storms 20/11/19

Archive of NZ Weather and Climate
Forum rules
These topics are a read-only archive and may be subject to out-of-date information.

For today's weather discussion head to: New Zealand Weather & Climate
User avatar
Richard
Posts: 8596
Joined: Tue 14/07/2009 07:32
Location: Medbury, Inland North Canterbury

Re: South Island Storms 20/11/19

Unread post by Richard »

Fantastic fork lightning hitting the hills around Waipara
NZ Thunderstorm Soc
Posts: 18855
Joined: Wed 12/03/2003 22:08
Location: Raukapuka Geraldine

Re: South Island Storms 20/11/19

Unread post by NZ Thunderstorm Soc »

Just come back from Timaru. Pictures later.
Very thick hail showers which covered the roads, stripped trees and loud booming thunder. \:D/
JohnGaul
NZThS
Razor
Moderator
Posts: 5335
Joined: Fri 10/02/2006 15:14
Location: Halswell, Christchurch

Re: South Island Storms 20/11/19

Unread post by Razor »

is that a Hook????
Annotation 2019-11-20 164517.jpg
You do not have the required permissions to view the files attached to this post.
Christchurch Rocks
Chris W
Posts: 1445
Joined: Tue 04/11/2014 18:13
Location: Lyttelton

Re: South Island Storms 20/11/19

Unread post by Chris W »

Not much to report from North Canterbury, a few flashes and a burst of very heavy rain.
NZ Thunderstorm Soc
Posts: 18855
Joined: Wed 12/03/2003 22:08
Location: Raukapuka Geraldine

Re: South Island Storms 20/11/19

Unread post by NZ Thunderstorm Soc »

Just had a heavy shower with just one fork coming down, followed by a long rumble of thunder, which included a "Dump" at the end. \:D/
JohnGaul
NZThS
tornado
Posts: 1705
Joined: Sat 02/03/2019 21:58
Location: papakura,auckland

Re: South Island Storms 20/11/19

Unread post by tornado »

NZ Thunderstorm Soc wrote: Wed 20/11/2019 17:22 Just had a heavy shower with just one fork coming down, followed by a long rumble of thunder, which included a "Dump" at the end. \:D/

lucky you. you finally had thunder. meanwhile here in auckland thunder not looking possible in the future.
Razor
Moderator
Posts: 5335
Joined: Fri 10/02/2006 15:14
Location: Halswell, Christchurch

Re: South Island Storms 20/11/19

Unread post by Razor »

tornado wrote: Wed 20/11/2019 17:33
NZ Thunderstorm Soc wrote: Wed 20/11/2019 17:22 Just had a heavy shower with just one fork coming down, followed by a long rumble of thunder, which included a "Dump" at the end. \:D/

lucky you. you finally had thunder. meanwhile here in auckland thunder not looking possible in the future.
You had your fair go recently lol, our turn!
Christchurch Rocks
tornado
Posts: 1705
Joined: Sat 02/03/2019 21:58
Location: papakura,auckland

Re: South Island Storms 20/11/19

Unread post by tornado »

Razor wrote: Wed 20/11/2019 17:36
tornado wrote: Wed 20/11/2019 17:33


lucky you. you finally had thunder. meanwhile here in auckland thunder not looking possible in the future.
You had your fair go recently lol, our turn!

thats true. but lucky you all down there having two thunder days this week. even a tornado snuck in
NZ Thunderstorm Soc
Posts: 18855
Joined: Wed 12/03/2003 22:08
Location: Raukapuka Geraldine

Re: South Island Storms 20/11/19

Unread post by NZ Thunderstorm Soc »

Some photos.
Tim 3.JPG
Tim 8.JPG
Tim 2.JPG
You do not have the required permissions to view the files attached to this post.
JohnGaul
NZThS
User avatar
Richard
Posts: 8596
Joined: Tue 14/07/2009 07:32
Location: Medbury, Inland North Canterbury

Re: South Island Storms 20/11/19

Unread post by Richard »

What an amazing chase that was. Got to Waipara and we parked a k up Mt Cass road as we watched 3 bolts hill the mt Cass hills, there there was a strong WSW wind blowing, Zoe tried to get video but that cell died, but to my south I was watching rapidly circuiting cloud about 45deg in the sky so we decided to head below it, headed down SH1 2km past the truck weigh station and hit a very strong east wind and small hail, then ( Tony will know where I'm talking) we headed down Purchas Rd and when we hit Mount Brown rd I saw to my right a huge wedge funnel cloud, I just about wet me pants when i saw that, but by the time i pulled over and Zoe got the photo it had mostly disappeared back up, at that stage I didn't really know how big it was. When we got back to Waikari the fire brigade had the main street closed off, the were a power pole on the road and trees blown over. We called in to see a mate and he said that that was the most amazing wind he can remember, he described it as being dead calm and then suddenly a massive wind that blew doors in, blew his fence over, he reckons it was over in a minute. I then worked out that that funnel was over Waikari and looking at how far away I was from Waikari I think that that wedge would have to have been 1 km wide at least. Surely that would have to up there with as big as they get in this country.
003.JPG
You do not have the required permissions to view the files attached to this post.
Last edited by Richard on Thu 21/11/2019 06:34, edited 3 times in total.
Chris W
Posts: 1445
Joined: Tue 04/11/2014 18:13
Location: Lyttelton

Re: South Island Storms 20/11/19

Unread post by Chris W »

Stoked for you Richard, that's a good chase there.

MS just updated to remove the severe risk, which makes sense, and to continue the moderate risk into the evening. There's action to the south, but I'm dubious about its chances of getting to Chch as much more than brief showers.
snowykiwi
Posts: 154
Joined: Tue 19/07/2011 14:47
Location: Rakaia

Re: South Island Storms 20/11/19

Unread post by snowykiwi »

Hail hitting Rakaia at the moment
Rakaia, 118asl.
tornado
Posts: 1705
Joined: Sat 02/03/2019 21:58
Location: papakura,auckland

Re: South Island Storms 20/11/19

Unread post by tornado »

Richard wrote: Wed 20/11/2019 18:09 What an amazing chase that was. Got to Waipara and we parked a k up Mt Cass road as we watched 3 bolts hill the mt Cass hills, there there was a trong WSW wind blowing, Zoe tried to get video but that cell died, but to my south I was watching rapidly circuiting cloud about 45deg in the sky so we decided to head below it, headed down SH1 2km past the truck weigh station and hit a very strong east wind and small hail, then ( Tony will know where I'm talking) we headed down Purchas Rd and when we hit Mount Brown rd I saw to my right a huge wedge funnel cloud, I just about wet me pants when i saw that, but by the time i pulled over and Zoe got the photo it had mostly disappeared back up, at that stage I didn't really know how big it was. When we got back to Waikari the fire brigade had the main street closed off, the were a power pole on the road and trees blown over. We called in to see a mate and he said that that was the most amazing wind he can remember, he decided it as being dead calm and then suddenly a massive wind that blew doors in, blew his fence over, he reckons it was over in a minute. I then worked out that that funnel was over Waikari and looking at how far away I was from Waikari I think that that wedge would have to have been 2 kms wide at least. Surely that would have to up there with as big as they get in this country.003.JPG
wow good chase there. that must of been a tornado.
NZ Thunderstorm Soc
Posts: 18855
Joined: Wed 12/03/2003 22:08
Location: Raukapuka Geraldine

Re: South Island Storms 20/11/19

Unread post by NZ Thunderstorm Soc »

Good report there, Richard.
Coming back onto rain here and just heard some distant thunder.
more photos
Tim 9.JPG
Tim 6.JPG
Tim 7.JPG
You do not have the required permissions to view the files attached to this post.
JohnGaul
NZThS
User avatar
Richard
Posts: 8596
Joined: Tue 14/07/2009 07:32
Location: Medbury, Inland North Canterbury

Re: South Island Storms 20/11/19

Unread post by Richard »

Ive loaded the video of the wedge that had started to dissipate
https://youtu.be/gcj-so_KiJ4
tornado
Posts: 1705
Joined: Sat 02/03/2019 21:58
Location: papakura,auckland

Re: South Island Storms 20/11/19

Unread post by tornado »

since the storm spawned a wedge funnel/tornado and had large hail stones im happy to comfirm it a supercell.
Last edited by tornado on Wed 20/11/2019 19:53, edited 1 time in total.
User avatar
03Stormchaser
Moderator
Posts: 4431
Joined: Tue 09/12/2003 12:11
Location: Prebbleton

Re: South Island Storms 20/11/19

Unread post by 03Stormchaser »

Strongest storm I'm chased in 15 years of chasing Canterbury storm. Hail 4cm and larger. Car is well dented but I will wear them with pride!


IMG_20191120_141742_1.jpg
You do not have the required permissions to view the files attached to this post.
NZ Largest Storm Chasing Facebook Pagehttp://www.facebook.com/nzstormchasers
NZ Largest Storm Chase Community https://www.facebook.com/groups/NZStormchasersGroup
NZ Stormchasers TV https://www.youtube.com/@NZStormchasers
Powermad
Posts: 114
Joined: Tue 13/11/2012 17:08
Location: Christchurch

Re: South Island Storms 20/11/19

Unread post by Powermad »

Wow. THAT finished my drought and filled my chasing cup!

When the cell was offshore Ashburton, I headed for the beach between Ashburton and Rakaia. As soon as I got there, I noticed the easterly picking up and she was moving inland. It was HUGE already where there was nowhere obvious to point the cam for lightning shots.

It overtook me, so I started back for Rakaia township to get over the river. Started taking video from my phone on its car mount, which came out really well.

Once over the bridge, it was definitely heading for West Melton/Darfield so I headed for Greendale to get over the Selwyn too. Continuous hail marble size and getting bigger. Then had to cross the Waimak, so went up to Sheffield and headed for Oxford.. Cust was getting NAILED with golfballs and all the way to Rangiora continuous thunder and heavy hail. It started dissipating on radar there so I stopped at Rangiora.

SUCH a great day 😊
Screenshot_20191120-194516_Maps.jpg
Screenshot_20191120-165010_Video Player.jpg
20191120_153108.jpg
Screenshot_20191120-182855_Video Player.jpg
You do not have the required permissions to view the files attached to this post.
User avatar
David
Posts: 7632
Joined: Sat 18/08/2007 21:02
Location: Howick, Auckland

Re: South Island Storms 20/11/19

Unread post by David »

Great photos/videos! Why is it that several posters here were able to recognise yesterday there was a chance for severe hail, but Metservice did not mention this until quite late (when it was already happening in Timaru, wasn't it?)
Image
mikestormchaser
Posts: 2765
Joined: Sat 03/06/2006 20:11
Location: Rolleston, Canterbury

Re: South Island Storms 20/11/19

Unread post by mikestormchaser »

Screenshot_20191120-173405_Facebook.jpg
Well unfortunately i missed alot of the action due to work reasons but ill leave it at that. Iv been left feeling very frustrated having missed that big hail although when i did get to leave i headed straight north on johns rd but got caught up in so much traffic, knowing id probably missed the best i decided to not give up and went all way into woodend and beyond, chaser converging with aaron :lol: seeing some big CGs in the process, but yet again stuck in a situation where i just wasnt in the right place at the right dam time!! Being a tru storm enthusiast it literally gives me headaches! But i know its not over and i get the feeling as we head into dec its going to be a season to remember! Awesome pics and videos who were in the right place! Seriously gets me fustrated when i honestly want to be there and get those moments. Ill attach a photo which i saw on stormchasers.co.nz page someone sent in. Clearly shows the Supercell structure i think the storm from timaru!
You do not have the required permissions to view the files attached to this post.
Last edited by mikestormchaser on Wed 20/11/2019 22:30, edited 1 time in total.
Mike
Stormchasers.co.nz
mikestormchaser
Posts: 2765
Joined: Sat 03/06/2006 20:11
Location: Rolleston, Canterbury

Re: South Island Storms 20/11/19

Unread post by mikestormchaser »

David wrote: Wed 20/11/2019 20:10 Great photos/videos! Why is it that several posters here were able to recognise yesterday there was a chance for severe hail, but Metservice did not mention this until quite late (when it was already happening in Timaru, wasn't it?)
I'm not quite sure sometimes on what the severe convection meteorologists for MS look at at times, but for me obviously the upper air at 700 snd 500 were extremely cold. Number 2 there was a distinct curved jet which was very strong over the south island today and 3 there was a lot of shear, converging winds which made it look quite the potent mix. The heating was a good thing aswel
Mike
Stormchasers.co.nz
Thunder
Posts: 2068
Joined: Wed 12/03/2003 19:47
Location: Mt Somers

Re: South Island Storms 20/11/19

Unread post by Thunder »

Impressive storm today, saw some incredible lightning but very hard actually getting it on camera due to all the reasons you can think of. Still had plenty of fun. Great photo's Andrew, that hail is huge! Nice capture there Richard, I nearly considered going over into Waikari but I was a bit spent after all the driving I had done and the storm looked to be weakening around Amberley so didn't go further north, looks like I should have! Oh well.....


20191120_paw01.jpg
20191120_paw02.jpg
20191120_saw01.jpg
You do not have the required permissions to view the files attached to this post.
Image
Aaron Wilkinson
User avatar
Richard
Posts: 8596
Joined: Tue 14/07/2009 07:32
Location: Medbury, Inland North Canterbury

Re: South Island Storms 20/11/19

Unread post by Richard »

My mistake yesterday was not to get a photo as soon as we saw the funnel, instead I thought we would get closer before getting a shot and by then it had largely shrunk. Is anyone able to get a screen shot of the radar? surely it would have shown up on it.

Here's another photo, still zoomed in which makes them look closer than they are
002.JPG
You do not have the required permissions to view the files attached to this post.
Awhituobs
Posts: 2256
Joined: Tue 10/09/2019 07:20
Location: Waiuku

Re: South Island Storms 20/11/19

Unread post by Awhituobs »

there did seem to be a hook on the rain radar in north canterbury Richard
althougth it was not clear if that was just because of the foot hills causing that
User avatar
Richard
Posts: 8596
Joined: Tue 14/07/2009 07:32
Location: Medbury, Inland North Canterbury

Re: South Island Storms 20/11/19

Unread post by Richard »

Awhituobs wrote: Thu 21/11/2019 06:06 there did seem to be a hook on the rain radar in north canterbury Richard
althougth it was not clear if that was just because of the foot hills causing that
Ive email the Met Service to see if they can send me a snap shot, again that's something else I should have done at the time was to check out the radar to see if a hook was showing