Active front, North Island 15th May

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Manukau heads obs
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Re: Active front, North Island 15th May

Unread post by Manukau heads obs »

just about to get walloped
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Re: Active front, North Island 15th May

Unread post by Manukau heads obs »

50 knots :)
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Re: Active front, North Island 15th May

Unread post by Vertigo »

sure is looking heavy over in the west right now!
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Re: Active front, North Island 15th May

Unread post by Manukau heads obs »

looks like a good CB about to hit north of piha area and move into west auckand city
we missed the heavy rain from the first CB line by 2 km here, but have just been clipped by a 2nd line
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Re: Active front, North Island 15th May

Unread post by jamie »

nothing exciting here from the front. looking forward to the trough coming in later this afternoon.
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Re: Active front, North Island 15th May

Unread post by David »

Getting the first rain for the day here now, up to 25mm/hr rain rate
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Re: Active front, North Island 15th May

Unread post by Vertigo »

heavy shower passed over 10 minutes ago, looks like it fired up as it hit the landmass
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Re: Active front, North Island 15th May

Unread post by Manukau heads obs »

looks like a small /weak tornado in the Nelson area early this morning:
http://www.stuff.co.nz/national/5006214 ... -in-Nelson
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Re: Active front, North Island 15th May

Unread post by Tim S »

Manukau heads obs wrote:looks like a small /weak tornado in the Nelson area early this morning:
http://www.stuff.co.nz/national/5006214 ... -in-Nelson
I thought it was a mini tornado actually! ;-) :lol: Was fairly wild when it hit here too, definitely a severe thunderstorm responsible as there was quite a distinct drop and then rise in the pressure as it passed over suggesting good inflow and outflow characteristics. Nice and frequent lightning from it too with a strike every 30 seconds or so for a good 10 minutes or so.

By the way, is Nelson now in the North Island? ;-)

Graph from last 12 hours, clearly shows the storm coming over around 2:30-2:45am and also the Southerly change coming through on midday:
nelsonwx.gif
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Re: Active front, North Island 15th May

Unread post by David »

Not much lightning in the Tasman on the trackers yet?
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Re: Active front, North Island 15th May

Unread post by Manukau heads obs »

that sounds like a good thunderstorm you got in the Nelson area early this morning Tim :wave:

the smaller scattered CB's in the trough are not lightning active at this stage....dang
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Re: Active front, North Island 15th May

Unread post by spwill »

Waitomo is as far north as the thunderstorms have come.
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Re: Active front, North Island 15th May

Unread post by Manukau heads obs »

this next line is looking more organised as it approaches the coast line
one or two strikes on it I have picked up
might get a bit more active yet...
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Re: Active front, North Island 15th May

Unread post by GreggWard »

Lots of lightning showing up to the west of Invercargill, in the last 0.5hr:
201105150110UTC.jpg
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Re: Active front, North Island 15th May

Unread post by mattyj46 »

Got dark in the last 40mins here in Invercargill, went from a fairly ordinary day to a darkish sky quick.
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Re: Active front, North Island 15th May

Unread post by KiwiWeather »

Lots of sun amongst the clouds here and the neighbour is out mowing the lawns. q-
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Re: Active front, North Island 15th May

Unread post by David »

That's the biggest 'dud' for a while, barely any activity on the Grey Lynn tracker for most of the afternoon from what I could see. Just one heavy shower here today, otherwise not too bad a day...
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Re: Active front, North Island 15th May

Unread post by tgsnoopy »

One heavy shower for a few minutes and that was it. No lightning at all, not much wind either.
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Re: Active front, North Island 15th May

Unread post by bmo »

Same here one massive downpour that caused our sky and wireless internet to go down and gutters to overflow but thats all nothing special, was hoping for some lightning! :(
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Re: Active front, North Island 15th May

Unread post by Tornado Tim »

Yup, I highly doubt there will be any t-storms now. The trough isnt even showing any CB's on it.

So I would say the risk is low now....
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Manukau heads obs
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Re: Active front, North Island 15th May

Unread post by Manukau heads obs »

can see lightning flashes now....frequent too...and I see there has been alot close to me around 5am....but I was asleep
just south of waiuku seems to be getting thunderstorms at the moment....and moving inland and still active
full gale here
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Re: Active front, North Island 15th May

Unread post by Nev »

Tim S wrote:
Manukau heads obs wrote:looks like a small /weak tornado in the Nelson area early this morning:
http://www.stuff.co.nz/national/5006214 ... -in-Nelson
I thought it was a mini tornado actually! ;-) :lol: Was fairly wild when it hit here too, definitely a severe thunderstorm responsible as there was quite a distinct drop and then rise in the pressure as it passed over suggesting good inflow and outflow characteristics. Nice and frequent lightning from it too with a strike every 30 seconds or so for a good 10 minutes or so.
Alarm-bells usually go off whenever the media reports, 'trampoline v. power-lines = mini-tornado'. :-s However, a tornado(s) does sound feasible, although downbursts or strong gusts also spring to mind.
I wonder if the neighbouring Wakapuaka Cemetery trees may have also got flanged? 8-o
Tim S wrote:By the way, is Nelson now in the North Island? ;-)
Isn't Nelson north of Wellington? lol :B
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Re: Active front, North Island 15th May

Unread post by Nev »

Some more info on the apparent Nelson tornado(s)...

'Nelson tornados wreak havoc' - Stuff


And this... :-s
'Gales, rain - now an icy blast' - NZ Herald
By Isaac Davison - 5:30 AM Monday May 16, 2011

...Mini-tornadoes also struck in the Wellington region and on the Kapiti Coast. One felled 30m trees on six properties. Waikanae resident Nigel Griffith said the brief blast of wind caused "a hell of a mess". A large pine tree fell on one of his company trucks, causing about $10,000 worth of damage. "I was surprised at the damage. It bounced off the back, stoving the roof in, pushing the doors out and bouncing the windscreen out. "Our horses were badly affected by the wind, galloping around, so I had to let them out. And next door, it took down two huge macrocarpa."
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Re: Active front, North Island 15th May

Unread post by 03Stormchaser »

Calling any weather event a tornado is just the flavor of the month for the media, its not like they will be accountable for making stuff up like that. Although calling the Nelson tornado a tornado looks accurate.
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Re: Active front, North Island 15th May

Unread post by bmo »

I think the media is just trying to sell their story by using the recent Albany tornado and saying that some strong winds are tornadoes to increase their reader count.
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