NZ Weather Forum

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.

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.

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

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

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?

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

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.

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.

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

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.

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.

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

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

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

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

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.

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

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

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.

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

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.

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