NZ Weather Forum

Storm Struck wrote: Fri 09/12/2022 18:24 Some models are in favour for an upper trough crossing from the west on Sunday, converging with a NE and a later SW wind shift.
Others not too keen on surface moisture on the plains.
I'd give it a low risk with general showers on the plains possibly heavy for a brief period.

MetService Thunderstorm Outlook

A large trough covers most of the country today. A low in this trough lies west of the South Island while a front moves onto the North Island. These features contribute to an unstable situation in many places.

Initially there is a low risk of thunderstorms about the west of the North Island and west and south of the South Island, but this spreads to a wider area during the morning and early afternoon, covering most of the North Island (except Wellington and parts of eastern Bay of Plenty and Gisborne) and the west, central and southern parts of the South Island.

There is a moderate risk of thunderstorms about Westland and northern Fiordland during most of the day, and these thunderstorms may be accompanied by localised heavy rain with intensities of 10 to 20 mm per hour and hail of 10 to 20 mm in diameter.

Also this morning, a moderate risk of thunderstorms develops about the north of Northland, possibly bringing localised heavy rain with intensities of 10 to 25 mm per hour and small hail. In the afternoon a moderate risk of thunderstorms develops over much of the rest of the North Island, as shown on the chart. Here, the thunderstorms may be associated with localised heavy rain of 10 to 25 mm per hour, strong wind gusts of 60 to 80 km/h and hail with diameters 5 to 15 mm. There is also a low risk that there could be severe thunderstorms with downpours of 25 to 40 mm per hour. In the Far North, the thunderstorms should ease late afternoon or early evening, but continue longer into the evening further south.

For the southern Canterbury Plains, North Otago, Dunedin, parts of Central Otago and Southland there is a high risk of thunderstorms this afternoon and evening. These thunderstorms may be accompanied by hail of 5 to 15 mm in diameter and localised heavy rain of 10 to 25 mm per hour, or possibly more.

MetService Thunderstorm Outlook Map - Is. 10 Dec 8.19am.png

Issued: 8:21am Sat, 10 Dec
Valid to midnight Sat, 10 Dec

Nev wrote: Sat 10/12/2022 15:12 A few more nice pics of this morning's controlled burn-off near Dunedin...

'Controlled burn sparks call-out' - Otago Daily Times

NZ Thunderstorm Soc wrote: Sat 10/12/2022 16:32 Thunder heard about 5 minutes ago from a development just to the SW of here.

Richard wrote: Sat 10/12/2022 16:43 Such interesting weather here in the south. Now in Lawrence sitting outside having an ale at the pub. Lots of storms around but not what I would call overly active. But still they keep coming

Nev wrote: Sat 10/12/2022 17:51 Mod Note: Thought it was about time we had a thread for this weekend's T-storms, etc.