Thunderstorms - 6th - 7th October

jamie · Unread post by **jamie** » Thu 06/10/2016 14:30

NZstorm wrote:7mm here off that front. Instability is quite weak this morning.

I was at paparimu just before 11am when it came thru and we had hail bigger than pea size!

Rogue · Unread post by **Rogue** » Thu 06/10/2016 14:49

Suprisingly unstable atmosphere here in Porirua, big cb's coming ashore.

Tornado Tim · Unread post by **Tornado Tim** » Thu 06/10/2016 14:54

Not often you get a nice t-storm outlook map like below:

Metservice wrote:very unstable conditions across New Zealand today. A frontal system is moving eastwards across the North Island this morning and early afternoon, bringing periods of rain and a moderate risk of thunderstorms from Taranaki to Northland and across to Bay of Plenty. These thunderstorms may produce localised rainfall rates of 10 to 20mm/hr, strong wind gusts of 90 km/h and small hail.

An active trough moves rapidly across the North Island during the evening,bringing a burst of heavy rain and squally thunderstorms to western and northern areas. There is a high risk of thunderstorms with this trough from Taranaki to Northland and across to Bay of Plenty, as depicted on the chart. These thunderstorms may produce localised rainfall rates of 10 to 20mm/hr, strong wind gusts of 90 to 110 km/h and hail of 5 to 15mm diameter. In addition, there is a MODERATE RISK OF SEVERE THUNDERSTORMS in the west from Taranaki to Northland this evening, with the potential for damaging wind gusts in excess of 110 km/h and the chance of small tornado.

A lesser risk of thunderstorms covers the lower North Island to Horowhenua Kapiti Coast, also northwest Nelson and Buller.

Wind convergences and cold temperatures aloft are likely to produce scattered showers over inland parts of Canterbury, eastern Otago and Southland today. There is a general low risk of thunderstorms in these areas as depicted on the chart, however the risk is considered moderate over Canterbury and North Otago this afternoon and early evening. These thunderstorms may produce localised rainfall rates of 10 to 20mm/hr, and hail of 10 to 20mm diameter.

No thunderstorms expected over the remainder of New Zealand.

NZ Thunderstorm Soc · Thu 06/10/2016 17:17

No thunder here, sadly but a good drop of rain this afternoon.
Nice and warm this morning, which I wasn't really expecting but conditions looked not all that right for thunderstorm development for here, or inland despite the variations of wind convergence and low surface pressure. There could of been a few 'Clayton's inland but nothing like what Richard reported, last week.

tich · Unread post by **tich** » Thu 06/10/2016 17:20

Raining solidly in Chch now. Area of red on radar just northeast of Timaru.

Richard · Unread post by **Richard** » Thu 06/10/2016 17:23

Being blowing NW here all day, but just in the last few moments its swung around to the SE and a lot cooler, so no action from this neck of the woods

NZstorm · Unread post by **NZstorm** » Thu 06/10/2016 17:52

Front in Tasman looks mildly active.

Looks like the Thunderstorms that developed in Canterbury this afternoon were more over the foothills.

NZ Thunderstorm Soc · Thu 06/10/2016 18:40

NZstorm wrote:
Looks like the Thunderstorms that developed in Canterbury this afternoon were more over the foothills.

I think so. My wife reported she heard a very distant rumble around 2pm, possibly from the TC area, which looked quite ominous when I was driving home about that time.

Manukau heads obs · Thu 06/10/2016 18:42

the media are making a big deal out of it
but it looks garden variety average, what is coming in overnight

NZ Thunderstorm Soc · Thu 06/10/2016 18:51

They always do, especially STUFF

mikestormchaser · Unread post by **mikestormchaser** » Thu 06/10/2016 19:39

NZ Thunderstorm Soc wrote:
NZstorm wrote:
Looks like the Thunderstorms that developed in Canterbury this afternoon were more over the foothills.
I think so. My wife reported she heard a very distant rumble around 2pm, possibly from the TC area, which looked quite ominous when I was driving home about that time.

It looked very ominous inland this afternoon. I saw heavy showers storms in Mt somers area today. Wonder if Aaron got a chance to chase?? I was going to leave work early if storms fired up but it got to messy in the end to head out. So didn't bother

melja · Unread post by **melja** » Thu 06/10/2016 20:01

A good half dozen loud rumbles here in Rangiora to the northwest.

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Manukau heads obs · Thu 06/10/2016 20:09

having said the above, a nice lightning active cell is moving my way

jamie · Unread post by **jamie** » Thu 06/10/2016 20:12

Manukau heads obs wrote:having said the above, a nice lightning active cell is moving my way

Still doesn't look like all the hype tho. I'm not anticipating much excitement tonight. Hope I'm wrong.

NZstorm · Unread post by **NZstorm** » Thu 06/10/2016 20:14

Frequent lightning north of Auckland. Every 3-5 seconds at peak. I'm at kaukapa and storm now out to east.

spwill · Unread post by **spwill** » Thu 06/10/2016 20:46

Yes, I drove north of Auckland to Owera, a lot of lightning/thunder . Storms mostly just north of Owera, plenty of rain.

Tornado Tim · Unread post by **Tornado Tim** » Thu 06/10/2016 21:02

Yea the storms north of Auckland are very active, a pity none of the activity so far has reached further south.......

David · Unread post by **David** » Thu 06/10/2016 21:32

Nothing of interest here this evening unfortunately. Just a few ordinary showers

Nev · Unread post by **Nev** » Thu 06/10/2016 22:06

Been getting quite a few decent flashes and the odd decent rumble out in the Gulf.

Here's Blitzortung's CG's for the 3 hours to 10pm so far tonight…

Blitzortung NZ - Oct 6, 7pm-10pm.png

03Stormchaser · Unread post by **03Stormchaser** » Fri 07/10/2016 06:51

Having small hail showers this morning

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NZstorm · Unread post by **NZstorm** » Fri 07/10/2016 07:01

Got woken at 3am by thunder.

Herald have got a story on last nights thunderstorm over north Auckland.

http://www.nzherald.co.nz/nz/news/artic ... d=11723143

Manukau heads obs · Fri 07/10/2016 07:03

That 3 am thunderstorm had like 3 seconds only to explosion like thunder here...but not all that frequent lightning

jamie · Unread post by **jamie** » Fri 07/10/2016 07:35

Thunder only about 3 seconds after lightning at 3am here too

Manukau heads obs · Fri 07/10/2016 08:35

Anyone get a capture of blitzortung at 3 am and or rain radar?

David · Unread post by **David** » Fri 07/10/2016 08:51

There was a heavy shower with a single reasonably loud roll of thunder here sometime 3-3.30am as well, was about 5 seconds between lightning and thunder.

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