Thunderstorms- NI- 12th -13th November

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These topics are a read-only archive and may be subject to out-of-date information.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
Manukau heads obs
Posts: 12305
Joined: Mon 10/03/2003 16:30
Location: West Coast Road, Manukau Peninsula, North Island

Re: Thunderstorms- NI- 12th -13th November

Unread post by Manukau heads obs »

6am
skies clear here on the west coast this morning, but can see a cloud layer in land
light easterly here at the moment
so that means a sea breeze convergence will start here on the west coast, then move inland
I can see towering clouds and old cb's out in the tasman, as the cut off low approaches :)

the cloud layer over the waikato this morning might be a good thing, and then rain band last night might be a good thing too...i.e lots of surface moisture but like a cap...that will burn off late morning...
yes?
Last edited by Manukau heads obs on Tue 13/11/2012 06:17, edited 1 time in total.
Image
Brian Hamilton, weather enthusiast. My weather dataEmail: [email protected]
User avatar
Nev
Moderator
Posts: 6324
Joined: Tue 07/03/2006 15:24
Location: Waiheke Island, Hauraki Gulf

Re: Thunderstorms- NI- 12th -13th November

Unread post by Nev »

Nice funnel-clouds pic on TVNZ last night.
Taken in Ngatea, North Waikato (just south of the Firth of Thames) yesterday arvo…
.
You do not have the required permissions to view the files attached to this post.
Manukau heads obs
Posts: 12305
Joined: Mon 10/03/2003 16:30
Location: West Coast Road, Manukau Peninsula, North Island

Re: Thunderstorms- NI- 12th -13th November

Unread post by Manukau heads obs »

nice ....most likely would have been a northerly wind down through the firth of thames
to create the wind shear
Image
Brian Hamilton, weather enthusiast. My weather dataEmail: [email protected]
User avatar
NZstorm
Posts: 11333
Joined: Mon 10/03/2003 19:38
Location: Grey Lynn, Auckland

Re: Thunderstorms- NI- 12th -13th November

Unread post by NZstorm »

Thanks for the pic Neville.

The only weakness with todays set up is the lack of shear. While storms end up slow moving individual cells don't hold up long in these situations.

Maybe a landspout again today given the very steep lapse rates!
spwill
Posts: 10072
Joined: Sun 29/06/2003 22:39
Location: Mt Eden Auckland

Re: Thunderstorms- NI- 12th -13th November

Unread post by spwill »

Nev wrote:Nice funnel-clouds pic on TVNZ last night.
Taken in Ngatea, North Waikato (just south of the Firth of Thames) yesterday arvo…
.
Thanks Nev, good to see that photo. Given the particularly cold upper air today there could be more waterspouts where convergence lines run across warm waters.

A fine start here, 11C, dewpoint 10C
Last edited by spwill on Tue 13/11/2012 07:17, edited 1 time in total.
jamie
Posts: 5907
Joined: Fri 25/02/2011 21:35
Location: Hamilton NZ

Thunderstorms- NI- 12th -13th November

Unread post by jamie »

Sunny skies here
jamie
Posts: 5907
Joined: Fri 25/02/2011 21:35
Location: Hamilton NZ

Thunderstorms- NI- 12th -13th November

Unread post by jamie »

Metservice outlook thismorning is no change from last night.
Manukau heads obs
Posts: 12305
Joined: Mon 10/03/2003 16:30
Location: West Coast Road, Manukau Peninsula, North Island

Re: Thunderstorms- NI- 12th -13th November

Unread post by Manukau heads obs »

In Waiuku,school sports day,but i can get
Away from here lunchtime or whenever to meet
Up Bombay hills
Image
Brian Hamilton, weather enthusiast. My weather dataEmail: [email protected]
User avatar
Tornado Tim
Moderator
Posts: 4920
Joined: Sun 19/10/2008 17:17
Location: Raglan, Waikato / Hillcrest, Hamilton

Re: Thunderstorms- NI- 12th -13th November

Unread post by Tornado Tim »

Partly to mostly cloudy atm, probably the residue leftover from last nights showers.

Should burn away fairly easily...

Waikato usually gets a NE to E Sea Breeze, any convergence line should actually move west.
If I was heading from Auckland, North Waikato looks quite good just after lunch, head further inland as the afternoon progresses.
Keep west of the line and let it come to you :)
NZAPStrike.net - NZ Aus Pacific Strike Network
Orion
Posts: 4210
Joined: Sun 08/08/2010 16:49
Location: Ashburton, Mid-Canterbury, 110m asl.

Re: Thunderstorms- NI- 12th -13th November

Unread post by Orion »

Happy hunting!
spwill
Posts: 10072
Joined: Sun 29/06/2003 22:39
Location: Mt Eden Auckland

Re: Thunderstorms- NI- 12th -13th November

Unread post by spwill »

Not sure of my movements yet.

Some towering Cu around now, these clouds over the Gulf.
You do not have the required permissions to view the files attached to this post.
jamie
Posts: 5907
Joined: Fri 25/02/2011 21:35
Location: Hamilton NZ

Thunderstorms- NI- 12th -13th November

Unread post by jamie »

Auckland people feel free to stop in at my place for a retarget. 027 6359444 just txt to make sure I'm not already in the road.
Manukau heads obs
Posts: 12305
Joined: Mon 10/03/2003 16:30
Location: West Coast Road, Manukau Peninsula, North Island

Re: Thunderstorms- NI- 12th -13th November

Unread post by Manukau heads obs »

Lots of cu around now
Is slowing the the heating...so sea breeze Will be
Late maybe
Cool about your place for headquarters
Image
Brian Hamilton, weather enthusiast. My weather dataEmail: [email protected]
User avatar
Tornado Tim
Moderator
Posts: 4920
Joined: Sun 19/10/2008 17:17
Location: Raglan, Waikato / Hillcrest, Hamilton

Re: Thunderstorms- NI- 12th -13th November

Unread post by Tornado Tim »

Severe Risk has extended more west in the latest outlook....
Metservice wrote:Widespread showers are forecast as a deep pool of cold air moves slowly east across the North Island today. There is a high risk that afternoon heating will produce thunderstorms where sea-breezes converge from about Taupo northwards.The thunderstorms that form may have hail 10 to 15mm in diameter and rainfall rates approaching 25mm per hour. Over western Bay of Plenty, southern Waikato,eastern Waitomo, Taumarunui and northern Taupo there is a moderate risk that some of these thunderstorms will become severe with rainfall rates 40mm/hr and hail 20mm because of very slow storm motion.

There is also a low risk afternoon heating may produce isolated thunderstorms over the ranges of Nelson, Buller and Marlborough, and also central Otago and inland Southland.

Elsewhere, no risk of thunderstorms or significant convection.
You do not have the required permissions to view the files attached to this post.
NZAPStrike.net - NZ Aus Pacific Strike Network
jamie
Posts: 5907
Joined: Fri 25/02/2011 21:35
Location: Hamilton NZ

Thunderstorms- NI- 12th -13th November

Unread post by jamie »

Yea I saw that. I might end up starting in Cambridge.

I see thunderstorm watch already out for a triangle between rotorua Hamilton and taupo.
User avatar
NZstorm
Posts: 11333
Joined: Mon 10/03/2003 19:38
Location: Grey Lynn, Auckland

Re: Thunderstorms- NI- 12th -13th November

Unread post by NZstorm »

Alot of t/cu here with small glaciated cb already appearing over the Waitakeri ranges. I think Auckland is a good target area today.
User avatar
Tornado Tim
Moderator
Posts: 4920
Joined: Sun 19/10/2008 17:17
Location: Raglan, Waikato / Hillcrest, Hamilton

Re: Thunderstorms- NI- 12th -13th November

Unread post by Tornado Tim »

Severe Tstorm Watch Issued for Waikato....
Metservice wrote: Issued by MetService at 10:30 am Tuesday 13 November 2012
Valid until 08:30 pm Tuesday 13 November 2012
This watch affects people in the following weather forecast districts:
Waikato
Waitomo
Taumarunui
Bay of Plenty
Rotorua
Taupo

Slow-moving thunderstorms are expected to develop this afternoon and there is a moderate risk some thunderstorms may have flooding rainfall of 25 to 40mm per hour and large hail around 20mm in diameter.

Issued by: Erick Brenstrum

This watch will be updated by: 04:30 pm Tuesday 13 November 2012
NZstorm wrote: I think Auckland is a good target area today.
For a standard storm yes, but Waikato looks better for storms with larger hail and will be easier to chase.
You do not have the required permissions to view the files attached to this post.
NZAPStrike.net - NZ Aus Pacific Strike Network
jamie
Posts: 5907
Joined: Fri 25/02/2011 21:35
Location: Hamilton NZ

Thunderstorms- NI- 12th -13th November

Unread post by jamie »

Itereating you guys have tcu up there. We are completely clouded over here now.
User avatar
NZstorm
Posts: 11333
Joined: Mon 10/03/2003 19:38
Location: Grey Lynn, Auckland

Re: Thunderstorms- NI- 12th -13th November

Unread post by NZstorm »

jamie.haultain wrote:Itereating you guys have tcu up there. We are completely clouded over here now.
Reasonably fine here with high topped t/cu and heavy showers developing.
spwill
Posts: 10072
Joined: Sun 29/06/2003 22:39
Location: Mt Eden Auckland

Re: Thunderstorms- NI- 12th -13th November

Unread post by spwill »

A few small showers have developed over the Ak area., 17C dp 12C
You do not have the required permissions to view the files attached to this post.
Manukau heads obs
Posts: 12305
Joined: Mon 10/03/2003 16:30
Location: West Coast Road, Manukau Peninsula, North Island

Re: Thunderstorms- NI- 12th -13th November

Unread post by Manukau heads obs »

Sea breeze started on the west coast
Looking primmed here for early storms in franklin
Area
Image
Brian Hamilton, weather enthusiast. My weather dataEmail: [email protected]
Manukau heads obs
Posts: 12305
Joined: Mon 10/03/2003 16:30
Location: West Coast Road, Manukau Peninsula, North Island

Re: Thunderstorms- NI- 12th -13th November

Unread post by Manukau heads obs »

Ps call me when u guys head to bombay,25 minutes
From here in Waiuku
Image
Brian Hamilton, weather enthusiast. My weather dataEmail: [email protected]
User avatar
Tornado Tim
Moderator
Posts: 4920
Joined: Sun 19/10/2008 17:17
Location: Raglan, Waikato / Hillcrest, Hamilton

Re: Thunderstorms- NI- 12th -13th November

Unread post by Tornado Tim »

Starting to get some clearance here, finally......
NZAPStrike.net - NZ Aus Pacific Strike Network
spwill
Posts: 10072
Joined: Sun 29/06/2003 22:39
Location: Mt Eden Auckland

Re: Thunderstorms- NI- 12th -13th November

Unread post by spwill »

Manukau heads obs wrote:Ps call me when u guys head to bombay,25 minutes
From here in Waiuku
I think NZstorm wants to stay in Auckland, I will keep a watch on Waikato from here for now.

Lovely day here, 19C, sunny, T Cu around.
Manukau heads obs
Posts: 12305
Joined: Mon 10/03/2003 16:30
Location: West Coast Road, Manukau Peninsula, North Island

Re: Thunderstorms- NI- 12th -13th November

Unread post by Manukau heads obs »

Showrs developed to SE of me
Not strong looking
Cb,s out to few have fizzled as sea breeze devolops
I can meet up in auckland from here too
Sea breeze here in Waiuku now
Image
Brian Hamilton, weather enthusiast. My weather dataEmail: [email protected]