Moist trough 7th to 13th March

cbm · Unread post by **cbm** » Fri 10/03/2017 20:30

Have never before seen Waikato stadium start to accumulate surface water since it was rebuilt. Looks like getting sustained >20mm/hr there. Heavy but nothing extreme here (Leamington) probably more like the 7mm/hr showing at the airport.

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Manukau heads obs · Fri 10/03/2017 21:33

Report of a possible small tornado Stanmore bay

jamie · Unread post by **jamie** » Fri 10/03/2017 21:37

Far out its still pumping down at home. 50mm there now.

Manukau heads obs · Fri 10/03/2017 21:51

We have had over 50 mm too
I am not at home though..up in the city for the weekend staying on a Marae
I see I have reception problems with the weather station

Nev · Unread post by **Nev** » Fri 10/03/2017 22:55

Manukau heads obs wrote:Big slip on Waiheke island by the sounds of it

Yeah, there's been been a few dodgy slips on Waiheke, but this video looks a little more precarious…

'Cliff slips into ocean beneath Waiheke house' - NZ Herald

(59mm here today so far)

Willoughby · Unread post by **Willoughby** » Sat 11/03/2017 01:28

Right pissing down in Hamilton CBD right now, tropical like !

Manukau heads obs · Sat 11/03/2017 06:38

Well that was a hot and sticky night sleeping in a marae overnight
In Auckland.21c and 100% hum

NZstorm · Unread post by **NZstorm** » Sat 11/03/2017 07:17

Heavy rain is back! 19mm in Grey Lynn the last hour.

David · Unread post by **David** » Sat 11/03/2017 07:18

Steady moderate rain in Howick this morning. 78mm last 18 hrs, more than the burst of rain earlier in the week.

spwill · Unread post by **spwill** » Sat 11/03/2017 07:28

More very heavy rain here, I see Grey Lynn is showing 26mm in the last hour

NZstorm · Unread post by **NZstorm** » Sat 11/03/2017 07:33

Manukau heads obs wrote:Report of a possible small tornado Stanmore bay

I would not be surprised if there are more reports of small tornadoes in the next 24hrs.

Nev · Unread post by **Nev** » Sat 11/03/2017 07:46

Whangapara only recorded gusts to 50 km/h around the time of that possible Stanmore Bay 'tornado'…

''Mini-tornado' adds to weather mayhem' - NZ Herald

12mm here so far this morn, or 71mm here since yesterday…

Manukau heads obs · Sat 11/03/2017 07:47

The Nw wind change tomorrow afternoon might be a good chance for a nado

jamie · Unread post by **jamie** » Sat 11/03/2017 07:48

95mm in about 14 hours at home and still coming down. No heavy rain warning though for Waikato. Just a watch was put out. I think this is my highest rainfall for any 24 hour period already with 10 hours to go.

NZstorm · Unread post by **NZstorm** » Sat 11/03/2017 08:14

My rain guage on 112mm since yesterday afternooon and Rickys weather station showing similar total.

NZstorm · Unread post by **NZstorm** » Sat 11/03/2017 11:17

The convection building in the North Tasman is heading our way folks and will affect the North Island from this evening through to tomorrow morning. Risk of a tornado from Taranaki to the top of Northland with this convection.

Tornado Tim · Unread post by **Tornado Tim** » Sat 11/03/2017 11:19

Quite a large Severe Thunderstorm Watch Out:

MetService - Gerard Barrow wrote: Valid until 10:00 pm Saturday 11 March 2017
Issued for:
Northland, Auckland,Coromandel Peninsula, Waikato, Waitomo

Taumarunui,Bay of Plenty,

Taupo,Hawkes Bay,Taranaki,

Taihape,Wanganui,Manawatu,Tararua
A warm and humid northerly flow over the North Island combined with unstable conditions is expected to produce scattered heavy showers and thunderstorms in many areas of the North Island this afternoon and evening. There is a moderate risk some of these thunderstorms may become SEVERE in localised areas from about northern Manawatu and Hawkes Bay northwards, producing localised heavy rain and possible downpours with intensities of 25 to 40mm/hr and possibly more. Rainfall of this intensity can cause flash flooding, especially about low-lying areas such as streams, rivers or narrow valleys, and may also lead to slips. Driving conditions will also be hazardous with surface flooding and poor visibility in heavy rain.

7599-15ab9d4dea0-2c3b3e0-15ab9d4dea0.png

03Stormchaser · Unread post by **03Stormchaser** » Sat 11/03/2017 14:21

Rain yet to arrive here in Christchurch. Latest runs showing Nelson, Golden Bay area in for some very heavy falls over night into tomorrow morning

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Tornado Tim · Unread post by **Tornado Tim** » Sat 11/03/2017 14:32

Damb spiders, checked the rain guage and the remaints of 2 beetles partially blocking the rain cone, urrgg!

Nev · Unread post by **Nev** » Sat 11/03/2017 14:44

Nev wrote:...there's been been a few dodgy slips on Waiheke, but this video looks a little more precarious…

'Cliff slips into ocean beneath Waiheke house' - NZ Herald

Apparently the house in the video has been investsigated by police and fire service and is not at risk.

86mm here for yesterday arvo and this morn - total since Tuesday arvo 284mm.

'Waiheke Island cleans up after more floods and slips' - Stuff

Manukau heads obs · Sat 11/03/2017 16:00

Looks like we had about 15mm in 20 minutes just now at home

spwill · Unread post by **spwill** » Sat 11/03/2017 17:04

Manukau heads obs wrote:Looks like we had about 15mm in 20 minutes just now at home

Saw that Cb from here, it was the only significant shower in the area today after the rain earlier this morning.
No heating today.

Tornado Tim · Unread post by **Tornado Tim** » Sat 11/03/2017 19:29

Keep an eye on a CB line to the West of Northland running down the coast this evening/overnight, its running right along the the side exit region of the Jet and as it reaches further south I think there will be a bit more compression at lower levels and resulting higher divergence with Jet interaction.
In which case I think those Cb's could fire up quite a bit over the west coast.

spwill · Unread post by **spwill** » Sun 12/03/2017 07:52

I see that Cb line has been lightning active overnight.
A fairly muggy night, low 20-21C

Richard · Unread post by **Richard** » Sun 12/03/2017 08:51

The rain that was forcasted to move over the top of the SI during today is moving through much earlier,another hour and it will have cleared as it moves SE. Still, been a handy rain with 17.8mm so far.

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