General June Weather

Weather reports, prognostics, questions and discussion. Climate diagnostics, drivers, and outlooks. Weather stations and websites.
spwill
Posts: 9358
Joined: Sun 29/06/2003 22:39
Location: Mt Eden Auckland
Has thanked: 433 times
Been thanked: 527 times

Re: General June Weather

Unread post by spwill »

42mm here last couple of days but much of it this morning.
spwill
Posts: 9358
Joined: Sun 29/06/2003 22:39
Location: Mt Eden Auckland
Has thanked: 433 times
Been thanked: 527 times

Re: General June Weather

Unread post by spwill »

Another 7mm here before the brighter weather arrived.
NZ Thunderstorm Soc
Posts: 17175
Joined: Wed 12/03/2003 22:08
Location: Raukapuka Geraldine
Has thanked: 1242 times
Been thanked: 957 times

Re: General June Weather

Unread post by NZ Thunderstorm Soc »

3.1mm of rain fell early morning and then cleared away to the NE to become a blue dome sunny day.
16.3C for today with not much wind.
Fine calm evening.
JohnGaul
NZThS
RODALCO
Posts: 313
Joined: Fri 12/01/2007 17:21
Location: Titirangi, Auckland, New Zealand
Has thanked: 81 times
Been thanked: 65 times

Re: General June Weather

Unread post by RODALCO »

Our raingauge overflowed, since Thursday 2nd June, 60mm over the last 4 days in Titirangi.
Who put the LED's on the lightning arrestor ?
User avatar
kiwisk8er
Posts: 315
Joined: Mon 03/04/2006 13:17
Location: Mosgiel, Dunedin 20 m ASL
Has thanked: 22 times
Been thanked: 32 times

Re: General June Weather

Unread post by kiwisk8er »

The northwester has arrived in Mosgiel, we currently have a gentle wind and 20˚C.
Awhituobs
Posts: 2174
Joined: Tue 10/09/2019 07:20
Location: Waiuku
Has thanked: 645 times
Been thanked: 539 times
Contact:

Re: General June Weather

Unread post by Awhituobs »

another 10mm
64mm for the month already
jamie
Posts: 5845
Joined: Fri 25/02/2011 21:35
Location: Hamilton NZ
Has thanked: 22 times
Been thanked: 252 times
Contact:

Re: General June Weather

Unread post by jamie »

Awhituobs wrote:another 10mm
64mm for the month already
Yea I’m already 70 which is on the back of 100 in the last 10 days of may. Would never know we’ve had that much.
Even though we are now getting the rain we needed, lots of autumn sown grass is still germinating. Each week on my pasture walk around the farm I’m still seeing new seedlings emerging that were planted in mid March. This winter and spring will be a train wreck. It’s going to be bloody tough farming for the next few months. Very costly to buy in a huge amount of food just to get through winter. All because the rains came 6 weeks too late.


Sent from my iPhone using Tapatalk
NZ Thunderstorm Soc
Posts: 17175
Joined: Wed 12/03/2003 22:08
Location: Raukapuka Geraldine
Has thanked: 1242 times
Been thanked: 957 times

Re: General June Weather

Unread post by NZ Thunderstorm Soc »

Fine earlier on this morning but increasing high cloud from the north to NW with NW developing during the day. Mild.
Today's maximum was 18.7C.
Came onto rain around 6pm with 7mm falling, Clearing away to the SE and becoming fine this evening.
Some flashes away to the NW this evening.
JohnGaul
NZThS
Simon Culling
Posts: 2035
Joined: Mon 23/11/2009 06:41
Location: Tiverton, Devon, UK
Has thanked: 350 times
Been thanked: 327 times

Re: General June Weather

Unread post by Simon Culling »

I hope this does not appear to be a silly question, but I often see the expression "spill over rain" mentioned in these monthly weather threads as applied to the South Island. What does this mean?
Aucklandstorm
Posts: 24
Joined: Thu 16/02/2012 19:14
Location: Auckland, Hillsborough
Has thanked: 18 times
Been thanked: 21 times

Re: General June Weather

Unread post by Aucklandstorm »

Simon Culling wrote: Wed 08/06/2022 21:17 I hope this does not appear to be a silly question, but I often see the expression "spill over rain" mentioned in these monthly weather threads as applied to the South Island. What does this mean?
Rain spilling over the mountains basically, fronts coming from the west hit and drag over the mountains and spill over the otherside I'm guessing, not 100% sure.
Aucklandstorm
Posts: 24
Joined: Thu 16/02/2012 19:14
Location: Auckland, Hillsborough
Has thanked: 18 times
Been thanked: 21 times

Re: General June Weather

Unread post by Aucklandstorm »

Probably caused by the updraft and going over the top and wouldn't go to far? I'm usually here to read and learn.
But I enjoy it, I'm sure some others have more detailed info on this.
NZ Thunderstorm Soc
Posts: 17175
Joined: Wed 12/03/2003 22:08
Location: Raukapuka Geraldine
Has thanked: 1242 times
Been thanked: 957 times

Re: General June Weather

Unread post by NZ Thunderstorm Soc »

I call it 'throw over' rain as what great amounts have been dumped on the West Coast, extra falls from this seem to come over the Southern Alps and rain in eastern areas, like today for example. Traditionally NW rain usually dumps it's load on the West Coast and then as the moisture has dried out of it, continues as a Foehn wind over the Canterbury Plains. There are similar effects like this in Europe and USA.
JohnGaul
NZThS
NZ Thunderstorm Soc
Posts: 17175
Joined: Wed 12/03/2003 22:08
Location: Raukapuka Geraldine
Has thanked: 1242 times
Been thanked: 957 times

Re: General June Weather

Unread post by NZ Thunderstorm Soc »

Last report from here for 2 weeks.
Cold NW sky with some throw over showers this afternoon.
Thunderstormic cloud along the Alps.
Maximum for today was 13.5C with 3mm of rain.
JohnGaul
NZThS
User avatar
Nev
Moderator
Posts: 5703
Joined: Tue 07/03/2006 15:24
Location: Waiheke Island, Hauraki Gulf
Has thanked: 318 times
Been thanked: 606 times

Re: General June Weather

Unread post by Nev »

Simon Culling wrote: Wed 08/06/2022 21:17 I hope this does not appear to be a silly question, but I often see the expression "spill over rain" mentioned in these monthly weather threads as applied to the South Island. What does this mean?
The only silly question is the one you don't ask... :smile: Thought the excerpts below from a past NIWA report may be of interest...

https://niwa.co.nz/news/new-zealand%E2% ... -mountains
Past research has indicated there is a relationship between temperature and the amount of precipitation that spills over the mountains into the headwaters of the major South Island hydro-storage catchments. The colder it is, the greater the 'spillover' precipitation. This effect is generally attributed to the greater distance a cold snowflake will drift in the wind compared to a warm rain drop.

The headwaters of the Lake Pukaki catchment are considered to be particularly susceptible to this effect, as a large proportion of precipitation there falls as snow.

Much climate change research assumes that there will be generally more rain falling as the world warms up. "But in some locations," says Dr Kerr, "there will be less. To date the assumption has been that in a warmer climate the hydro lakes will get more rainfall, but if this temperature-spillover relationship is significant, the hydro lakes may actually get drier – that means more expensive electricity. By the same token, and more importantly from a hazard management point of view, West Coast villages like Franz Josef may end up with an even greater likelihood of flooding.
spwill
Posts: 9358
Joined: Sun 29/06/2003 22:39
Location: Mt Eden Auckland
Has thanked: 433 times
Been thanked: 527 times

Re: General June Weather

Unread post by spwill »

Simon Culling wrote: Wed 08/06/2022 21:17 I hope this does not appear to be a silly question, but I often see the expression "spill over rain" mentioned in these monthly weather threads as applied to the South Island. What does this mean?
It will be the rain east of the Alps on a west/NW flow. With the air descending off the Alps and the blocking affect of the Alps rain clouds tend to dissipate quickly as they move east from the main divide along the Alps. I'm picking moisture in the higher levels plays the biggest part in how much rain goes east.
User avatar
Richard
Posts: 7785
Joined: Tue 14/07/2009 07:32
Location: Amuri basin,Inland North Canterbury
Has thanked: 1168 times
Been thanked: 518 times

Re: General June Weather

Unread post by Richard »

In your link Simon it says -
To date the assumption has been that in a warmer climate the hydro lakes will get more rainfall, but if this temperature-spillover relationship is significant, the hydro lakes may actually get drier
My thinking would be that the extra evaporation from a warmer Tasman would far outweigh the small amount of spillway rainfall not spreading out as far, its just a drop in a bucket to what falls within the first 20-30km. Yes I could see maybe less rainfall further from the main divide, but it still has to fall and it still will within that divide/20-30km zone.
darcyplumb
Posts: 334
Joined: Sun 06/12/2020 20:15
Location: Ashburton
Has thanked: 687 times
Been thanked: 154 times

Re: General June Weather

Unread post by darcyplumb »

News breaking at the moment of a possible tornado impacting Waikanae on the Kapiti Coast.
Simon Culling
Posts: 2035
Joined: Mon 23/11/2009 06:41
Location: Tiverton, Devon, UK
Has thanked: 350 times
Been thanked: 327 times

Re: General June Weather

Unread post by Simon Culling »

Thanks for all the replies about spill over rain. Judging by the height of the Alps, I am guessing that the rain will fall from Altostratus cloud and would therefore be generally light, except close to the mountains?
User avatar
Richard
Posts: 7785
Joined: Tue 14/07/2009 07:32
Location: Amuri basin,Inland North Canterbury
Has thanked: 1168 times
Been thanked: 518 times

Re: General June Weather

Unread post by Richard »

Not always, some spillover rain can be quite heavy rain at times
User avatar
TonyT
Moderator
Posts: 2746
Joined: Thu 08/05/2003 11:09
Location: Amberley, North Canterbury
Has thanked: 317 times
Been thanked: 958 times

Re: General June Weather

Unread post by TonyT »

Simon Culling wrote: Thu 09/06/2022 20:20 Thanks for all the replies about spill over rain. Judging by the height of the Alps, I am guessing that the rain will fall from Altostratus cloud and would therefore be generally light, except close to the mountains?
CBs definitely make it through/over/round to the other side.
User avatar
David
Posts: 7149
Joined: Sat 18/08/2007 21:02
Location: Howick, Auckland
Has thanked: 345 times
Been thanked: 533 times
Contact:

Re: General June Weather

Unread post by David »

Temps running way above average for June so far. Daily max around 2C above average and daily min around 3.5C above average. Another mild one today, 18C
Image
NZ Thunderstorm Soc
Posts: 17175
Joined: Wed 12/03/2003 22:08
Location: Raukapuka Geraldine
Has thanked: 1242 times
Been thanked: 957 times

Re: General June Weather

Unread post by NZ Thunderstorm Soc »

Great trip to the Wellington region, so far.
Thunderstorms every day :smile:
Rather raw today with constant showers of heavy rain.
JohnGaul
NZThS
Awhituobs
Posts: 2174
Joined: Tue 10/09/2019 07:20
Location: Waiuku
Has thanked: 645 times
Been thanked: 539 times
Contact:

Re: General June Weather

Unread post by Awhituobs »

woa.png
something to keep an eye on !
(next monday)
You do not have the required permissions to view the files attached to this post.
cbm
Posts: 929
Joined: Fri 17/10/2008 08:50
Location: Cambridge, Waikato NZ
Has thanked: 11 times
Been thanked: 167 times

Re: General June Weather

Unread post by cbm »

Awhituobs wrote:
woa.png
something to keep an eye on !
(next monday)
All the models ( at least the runs that Windy is displaying) are showing a deep low approaching from the North. This is quite different fron the summer TC where typically one (often GFS) would 1 week out show a direct hit and the others nothing.

Sent from my SM-N950F using Tapatalk

NZ Thunderstorm Soc
Posts: 17175
Joined: Wed 12/03/2003 22:08
Location: Raukapuka Geraldine
Has thanked: 1242 times
Been thanked: 957 times

Re: General June Weather

Unread post by NZ Thunderstorm Soc »

Apart from the thunderous downpour in Upper Hutt around lunchtime, unstable conditions now starting to ease up here in the Hutt/Wellington region with winds easing and weather clearing this evening.
JohnGaul
NZThS
Post Reply