Widespread T-storms - Dec 1-6

Archive of NZ Weather & 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These topics are a read-only archive and may be subject to out-of-date information.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
Locked
einzack
Posts: 401
Joined: Sun 12/02/2012 10:21
Location: Rolleston, Canterbury
Has thanked: 5 times
Been thanked: 44 times

Re: Widespread T-storms - Dec 1-5

Unread post by einzack »

melja
Posts: 2202
Joined: Sun 11/06/2006 20:57
Location: Waikawa, Picton
Has thanked: 0
Been thanked: 74 times

Re: Widespread T-storms - Dec 1-5

Unread post by melja »

Weather bomb lol

Sent from my Redmi Note 4 using Tapatalk

jamie
Posts: 5907
Joined: Fri 25/02/2011 21:35
Location: Hamilton NZ
Has thanked: 22 times
Been thanked: 273 times
Contact:

Re: Widespread T-storms - Dec 1-5

Unread post by jamie »

Is there a chance that Southland storm is rotating? Would love to see better radar shots of it. Looks very odd on radar we have available!


Sent from my iPhone using Tapatalk
User avatar
NZstorm
Posts: 11333
Joined: Mon 10/03/2003 19:38
Location: Grey Lynn, Auckland
Has thanked: 342 times
Been thanked: 361 times

Re: Widespread T-storms - Dec 1-5

Unread post by NZstorm »

Overcaste day with low clouds and fairly persisitent precip in Auckland today. Not a nice day although not cold with max 21C.

There may be an isolated LP supercell over the east of the South Island tomorrow south of Timaru or in Southland.
Last edited by NZstorm on Mon 03/12/2018 21:11, edited 1 time in total.
User avatar
Richard
Posts: 8369
Joined: Tue 14/07/2009 07:32
Location: Medbury, Inland North Canterbury
Has thanked: 1656 times
Been thanked: 800 times

Re: Widespread T-storms - Dec 1-5

Unread post by Richard »

Amazing amount of rain in such a short time
User avatar
03Stormchaser
Moderator
Posts: 4428
Joined: Tue 09/12/2003 12:11
Location: Prebbleton
Has thanked: 104 times
Been thanked: 184 times
Contact:

Re: Widespread T-storms - Dec 1-5

Unread post by 03Stormchaser »

einzack wrote: Mon 03/12/2018 20:45 75mm in 45mins:
https://www.stuff.co.nz/national/109036 ... s-out-road
Terrible report in this article

"A weather bomb has resulted in flash flooding around Gladstone School near Carterton"

#-o

EDIT: Just saw melja post above, when will they learn!
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
Chris Raine
Posts: 952
Joined: Thu 17/04/2003 11:54
Location: Thornbury
Has thanked: 11 times
Been thanked: 69 times

Re: Widespread T-storms - Dec 1-5

Unread post by Chris Raine »

Other than the Mokoreta storm it was a quiet day in Southland .Will see what tomorrow brings .Mokoreta is in the middle of nowhere only isolated farms in the valley
NZ Thunderstorm Soc
Posts: 18488
Joined: Wed 12/03/2003 22:08
Location: Raukapuka Geraldine
Has thanked: 1769 times
Been thanked: 1412 times

Re: Widespread T-storms - Dec 1-5

Unread post by NZ Thunderstorm Soc »

Aaron from WW popped into see me today. He had been observing today's storm around the back of Geraldine.
"Up on the Downs" as they say around here [-X
....anyway some pictures.
Rainshafts..JPG
Looking towards Mt. Peel 3.JPG
MAH03126_Moment.jpg
Chucking it Down.JPG
You do not have the required permissions to view the files attached to this post.
JohnGaul
NZThS
Cyclone Tracy
Posts: 2488
Joined: Thu 07/09/2017 19:25
Location: North Shore, Auckland
Has thanked: 771 times
Been thanked: 1719 times

Re: Widespread T-storms - Dec 1-5

Unread post by Cyclone Tracy »

Next trough coming in from the Tasman is kicking off quite a few strikes on Northland ATM. Also quite a few sparks just off the west coast of Auckland.
User avatar
NZstorm
Posts: 11333
Joined: Mon 10/03/2003 19:38
Location: Grey Lynn, Auckland
Has thanked: 342 times
Been thanked: 361 times

Re: Widespread T-storms - Dec 1-5

Unread post by NZstorm »

Cyclone Tracy wrote: Tue 04/12/2018 05:01 Next trough coming in from the Tasman is kicking off quite a few strikes on Northland ATM. Also quite a few sparks just off the west coast of Auckland.
The Northland portion was well indicated in the modelling. The storms are elevated. Hopefully Auckland can catch a storm.

non stop spherics on the am band!
User avatar
03Stormchaser
Moderator
Posts: 4428
Joined: Tue 09/12/2003 12:11
Location: Prebbleton
Has thanked: 104 times
Been thanked: 184 times
Contact:

Re: Widespread T-storms - Dec 1-5

Unread post by 03Stormchaser »


jamie wrote:Would love to see better radar shots of it. Looks very odd on radar we have available!


Sent from my iPhone using Tapatalk
That will never happen...
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
User avatar
David
Posts: 7578
Joined: Sat 18/08/2007 21:02
Location: Howick, Auckland
Has thanked: 416 times
Been thanked: 825 times
Contact:

Re: Widespread T-storms - Dec 1-5

Unread post by David »

Woken by a roll of thunder here. Sounded east, out to sea
Image
mikestormchaser
Posts: 2711
Joined: Sat 03/06/2006 20:11
Location: Rolleston, Canterbury
Has thanked: 355 times
Been thanked: 607 times

Re: Widespread T-storms - Dec 1-5

Unread post by mikestormchaser »

NZstorm wrote: Mon 03/12/2018 21:02 Overcaste day with low clouds and fairly persisitent precip in Auckland today. Not a nice day although not cold with max 21C.

There may be an isolated LP supercell over the east of the South Island tomorrow south of Timaru or in Southland.
Interesting, can you tell us what numbers your looking at for future reference as to why a severe thunderstorm like that would accour? I can see high instability around timaru south.. strong jet stream etc and lots of surface moisture but the upper air isnt that cold and no real S change.
Thanks in advance 😊
Last edited by mikestormchaser on Tue 04/12/2018 06:50, edited 1 time in total.
Mike
Stormchasers.co.nz
User avatar
tgsnoopy
Posts: 3653
Joined: Fri 25/03/2005 21:17
Location: Tauranga, NZ (Curse you COVID-19 :-( )
Has thanked: 816 times
Been thanked: 283 times

Re: Widespread T-storms - Dec 1-5

Unread post by tgsnoopy »

03Stormchaser wrote: Tue 04/12/2018 06:27
jamie wrote:Would love to see better radar shots of it. Looks very odd on radar we have available!


Sent from my iPhone using Tapatalk
That will never happen...
I hope you are wrong. Maybe we should start an online petition and start hassling some politicians or something?
spwill
Posts: 9907
Joined: Sun 29/06/2003 22:39
Location: Mt Eden Auckland
Has thanked: 839 times
Been thanked: 866 times

Re: Widespread T-storms - Dec 1-5

Unread post by spwill »

Expecting to hear thunder here shortly but it could miss us, north Auckland looking better placed.
User avatar
Tornado Tim
Moderator
Posts: 4920
Joined: Sun 19/10/2008 17:17
Location: Raglan, Waikato / Hillcrest, Hamilton
Has thanked: 102 times
Been thanked: 202 times
Contact:

Re: Widespread T-storms - Dec 1-5

Unread post by Tornado Tim »

Thunder going off every 10 seconds or so in Hamilton atm, heading into Raglan now, will be good 😊
NZAPStrike.net - NZ Aus Pacific Strike Network
User avatar
NZstorm
Posts: 11333
Joined: Mon 10/03/2003 19:38
Location: Grey Lynn, Auckland
Has thanked: 342 times
Been thanked: 361 times

Re: Widespread T-storms - Dec 1-5

Unread post by NZstorm »

mikestormchaser wrote: Tue 04/12/2018 06:46
NZstorm wrote: Mon 03/12/2018 21:02 Overcaste day with low clouds and fairly persisitent precip in Auckland today. Not a nice day although not cold with max 21C.

There may be an isolated LP supercell over the east of the South Island tomorrow south of Timaru or in Southland.
Interesting, can you tell us what numbers your looking at for future reference as to why a severe thunderstorm like that would accour? I can see high instability around timaru south.. strong jet stream etc and lots of surface moisture but the upper air isnt that cold and no real S change.
Thanks in advance 😊
I often look at lapse rates and anything over 6.5 is potentially quite unstable. The lapse rates will steepen to 7.0 later this afternoon for Otago/Southland. 500mb temps quite cold at -20C. Some upper flow and 300mb divergence there to assist. Will come down to degree of surface heating as airmass is capped.
mikestormchaser
Posts: 2711
Joined: Sat 03/06/2006 20:11
Location: Rolleston, Canterbury
Has thanked: 355 times
Been thanked: 607 times

Re: Widespread T-storms - Dec 1-5

Unread post by mikestormchaser »

Where do you go to see lapse rates? Would be nice to see some severe hail!! Could be oppotunity for you to go chase john being close to you. Driving into Christchurch from rolleston this morning, its abit unstable already and had sporadics
Mike
Stormchasers.co.nz
User avatar
NZstorm
Posts: 11333
Joined: Mon 10/03/2003 19:38
Location: Grey Lynn, Auckland
Has thanked: 342 times
Been thanked: 361 times

Re: Widespread T-storms - Dec 1-5

Unread post by NZstorm »

Distant thunder to west.

Mike I just compute the lapse rates off the gfs. Temp difference between 850mb and 500mb devided by the hieght difference.
Chris W
Posts: 1444
Joined: Tue 04/11/2014 18:13
Location: Lyttelton
Has thanked: 947 times
Been thanked: 362 times

Re: Widespread T-storms - Dec 1-5

Unread post by Chris W »

Some very impressive anvils over the Southern Alps this morning, very picturesque. However I was driving, so no photos unfortunately.
jamie
Posts: 5907
Joined: Fri 25/02/2011 21:35
Location: Hamilton NZ
Has thanked: 22 times
Been thanked: 273 times
Contact:

Re: Widespread T-storms - Dec 1-5

Unread post by jamie »

Wow that storm had sooo much bark. Big thunder every few seconds but didn’t have much bite.


Sent from my iPhone using Tapatalk
spwill
Posts: 9907
Joined: Sun 29/06/2003 22:39
Location: Mt Eden Auckland
Has thanked: 839 times
Been thanked: 866 times

Re: Widespread T-storms - Dec 1-5

Unread post by spwill »

Rumbling away in the west, distant.
User avatar
Tornado Tim
Moderator
Posts: 4920
Joined: Sun 19/10/2008 17:17
Location: Raglan, Waikato / Hillcrest, Hamilton
Has thanked: 102 times
Been thanked: 202 times
Contact:

Re: Widespread T-storms - Dec 1-5

Unread post by Tornado Tim »

More or less core punched the storm as I came into work this morning, some very nice pink positive forks come which lit entire sky up..... Driving into it was interesting as it looked featureless and had dark slight green hue to it. Not a bad storm 😊, despite being rather messy....

Line number 2 coming into Raglan now,, thunder rumbling away...
NZAPStrike.net - NZ Aus Pacific Strike Network
Chris Raine
Posts: 952
Joined: Thu 17/04/2003 11:54
Location: Thornbury
Has thanked: 11 times
Been thanked: 69 times

Re: Widespread T-storms - Dec 1-5

Unread post by Chris Raine »

One front through at my location(Thornbury) mid Southland . Currently overcast 14C .5.1 mm in the gauge.Satellite photo shows a gap then the next trough .Sky will need to clear for some surface heating
User avatar
David
Posts: 7578
Joined: Sat 18/08/2007 21:02
Location: Howick, Auckland
Has thanked: 416 times
Been thanked: 825 times
Contact:

Re: Widespread T-storms - Dec 1-5

Unread post by David »

Hearing distant thunder now to the west. Hopefully doesn't do the usual trick and die away as it moves east...
Image
Locked