General June Weather

NZstorm · Unread post by **NZstorm** » Thu 31/05/2018 07:20

June starts with a splash for northern areas this weekend. Heavy rain/thunder/gales in exposed areas likely. An active front will be moving south over Northland Saturday to reach Auckland later in the day. Plenty of moisture with the front.

just add 850mb wind chart for Saturday afternoon. Shows low level jet with the front, quite typical in these sets. 50knots at 850mb means 50knot gusts are possible in exposed areas at the surface.

NZstorm · Unread post by **NZstorm** » Fri 01/06/2018 07:03

Now looking like Sunday before we see decent precip in the Auckland area.

Met Service going for a cooler than average June for NZ and NIWA warmer than average.

David · Unread post by **David** » Fri 01/06/2018 07:43

Cold start down south for first day of June! A few -9 readings on the Wunderground PWS map.

David · Unread post by **David** » Fri 01/06/2018 07:46

Also Dunedin Airport is showing -5.4C and Dunedin City showing +6.2C currently! Huge difference...

einzack · Unread post by **einzack** » Fri 01/06/2018 09:13

David wrote: ↑Fri 01/06/2018 07:46 Also Dunedin Airport is showing -5.4C and Dunedin City showing +6.2C currently! Huge difference...

Indeed. A difference of 12.0°C recorded at 7:30am it seems.
For these two sites to be only ~28km apart by road, and perhaps 20k as the crow flies, that's pretty impressive.
Certainly not unusual round these parts, but I wonder what the largest temp difference between two "close-ish" sites would be?

TonyT · Unread post by **TonyT** » Fri 01/06/2018 11:17

einzack wrote: ↑Fri 01/06/2018 09:13
David wrote: ↑Fri 01/06/2018 07:46 Also Dunedin Airport is showing -5.4C and Dunedin City showing +6.2C currently! Huge difference...
Indeed. A difference of 12.0°C recorded at 7:30am it seems.
For these two sites to be only ~28km apart by road, and perhaps 20k as the crow flies, that's pretty impressive.
Certainly not unusual round these parts, but I wonder what the largest temp difference between two "close-ish" sites would be?

There was a recent time when Chch airport was on 36, the Gardens on 30, and New Brighton on 18.

viewtopic.php?f=30&t=5480&start=25

treetop · Unread post by **treetop** » Fri 01/06/2018 17:46

Dunedin airport lies in a rarther sheltered vally[night time cold air inversion] while Dunedin only needs a light breeze off the ocean to get 6 deg overnight.

Richard · Unread post by **Richard** » Fri 01/06/2018 18:12

einzack wrote: ↑Fri 01/06/2018 09:13
David wrote: ↑Fri 01/06/2018 07:46 Also Dunedin Airport is showing -5.4C and Dunedin City showing +6.2C currently! Huge difference...
Indeed. A difference of 12.0°C recorded at 7:30am it seems.
For these two sites to be only ~28km apart by road, and perhaps 20k as the crow flies, that's pretty impressive.
Certainly not unusual round these parts, but I wonder what the largest temp difference between two "close-ish" sites would be?

Two locations that i can think of up this way that would be similar and in less distance than the 20 k between Dunedin Airport & Dunedin City would be Gore Bay vs Cheviot.

David · Unread post by **David** » Fri 01/06/2018 21:52

Looks like there were some isolated patches of all-day fog around northern Waikato near the border with Auckland today - PWS at Mangatawhiri shows a max of 9C today with near 100% humidity

NZstorm · Unread post by **NZstorm** » Sat 02/06/2018 07:34

15C in Grey Lynn 7am this morning. A nice change back to milder weather.

An unstable atmosphere arrives over Auckland tomorrow but I think Monday the most likely day for a thunderstorm in Auckland.

spwill · Unread post by **spwill** » Sat 02/06/2018 09:17

Dunedin Airport had 15 days in May with a minimum of 0C or lower, Alexandra showing 12 days with a min of 0C or lower, used Metservice.

spwill · Unread post by **spwill** » Sun 03/06/2018 09:22

Twizel and Omarama have not got above 0C last 3 days, Wanaka not above 3C .

NZstorm · Unread post by **NZstorm** » Mon 04/06/2018 07:23

Big temperature spread across NZ this morning, Whangarei on 18C at 7am to Invercargill on -4C.
15C in Auckland.

melja · Unread post by **melja** » Mon 04/06/2018 07:42

In the Marlborough sounds there has been hardly enough rain to wet the ground this weekend despite all this rain forecast.

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spwill · Unread post by **spwill** » Mon 04/06/2018 08:36

Twizel and Omarama into their 5th day with temperatures not getting above 0C, quite a cold spell there.

Andy · Unread post by **Andy** » Mon 04/06/2018 08:45

https://www.odt.co.nz/regions/central-o ... emperature

NZstorm · Unread post by **NZstorm** » Tue 05/06/2018 06:48

Big thermal contrast between north and south again this morning. At 6am Whangarei on 15C, Dunedin Airport and Queenstown -4C. Auckland 14C

Andy · Unread post by **Andy** » Tue 05/06/2018 12:33

https://www.odt.co.nz/regions/slideshow-life-freezer

Cyclone Tracy · Unread post by **Cyclone Tracy** » Tue 05/06/2018 14:51

Upper cold pool breaching 20 degrees south of the equator within 72 hours according to all models. System 7 is about to be put in the oven.... in the tropics, 2nd week of June.... a touch unusual.

Andy · Unread post by **Andy** » Tue 05/06/2018 20:12

Mitchell’s cottage, Fruitland’s -4 deg at mid-day, 450m above sea level.

David · Unread post by **David** » Wed 06/06/2018 11:14

Torrential downpour in Parnell for a few minutes now... you wouldn't guess from looking at the radar

Cyclone Tracy · Unread post by **Cyclone Tracy** » Thu 07/06/2018 08:12

Another 8mm in the last 24 hours. 88mm for the month now with the June average well in sight.

Most models putting a subtropical low near the upper NI by early to mid next week originating from a tropical disturbance. The southern hemisphere version of the omega block looks to be breaking down with this system, as SE OZ starts to get more frontal action. This subtropical low will be system 7 (and last) in 22 days from the early may SSW event with a more normal programming resuming from late next week IMO.

einzack · Unread post by **einzack** » Thu 07/06/2018 08:16

Currently sitting on 10.6°C, which is the warmest temperature I've recorded since May 21st!

spwill · Unread post by **spwill** » Thu 07/06/2018 08:40

For Auckland it is 3 or 4 fine sunny days now until a northern low starts impacting us early next week.

Possible pattern change to disturbed westerly coming up mid month for NZ.

Andy · Unread post by **Andy** » Thu 07/06/2018 09:04

So it will be abit warmer down south next week with the westerly flow

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