Weather
Mountain Radio

Latest South Island Weather Forecast

This forecast was transmitted by ZKIB BASE this evening on our 7.30pm voice call  to all of our field sets located in the South Island and Stewart Island..


Situation Statement

Issued: 9:35am Tuesday 21 Aug

A broad low pressure system, with embedded fronts, is spreading over  New Zealand from the Tasman Sea during the next few days.


Short Forecast

Issued: 1:22pm Tuesday 21 Aug

Valid to: Midnight Wednesday 22 Aug

Marlborough, Nelson, Buller and Westland

Showers, some heavy with hail and possible thunderstorms, clearing Nelson and Marlborough tonight and elsewhere tomorrow morning.

Canterbury, North and Central Otago, and Dunedin

Mainly fine, but isolated showers today, mostly about the Canterbury foothills.

Clutha, Southland and Fiordland

A few showers, turning to rain at times tomorrow.


Extended Brief Forecast

Issued: 11:13am Tuesday 21 Aug

Thursday

South Island, fine in the west, scattered rain in the east.

Friday

South Island, showers in the east becoming isolated, mainly fine elsewhere.

Saturday

South Island, mainly fine but a few showers for Fiordland and coastal Southland.


Brief Mountain Forecast

Issued at 12:41pm Tuesday 21 Aug  

Valid to Midnight Wednesday 22 Aug

South Island

Kaikoura ranges:

Showers, some possibly heavy, clearing tonight then mostly fine.

Nelson lakes and Kahurangi National Parks:

Showers, some heavy with hail and possible thunderstorms, easing tomorrow morning then clearing in the afternoon. Snow lowering to 1000 metres this evening, clearing tomorrow morning.

The Southern Alps:

A few showers, with snow lowering to 1000 metres this afternoon, clearing tomorrow afternoon.

Fiordland:

Occasional showers with snow above 900 metres. Showers turning to snow below 900 metres tonight.

WINDS: Northwesterlies, strong about Kahurangi and Kaikoura Ranges. Light winds elsewhere today, then strong northwesterlies tomorrow.

Freezing Level: 1600 metres in north sloping to 1200 metres in south, lowering to 1200 metres in north this evening.


Extended Mountain Forecast

Issued at: 1:31pm Tuesday 21 Aug

South Island

Thursday:

Occasional rain east of the divide, possibly falling as snow to 700 metres. Fine elsewhere. Southerlies, strong about the tops in Fiordland.

Freezing Level: About 1200 metres.

Friday:

Showers about the divide clearing, possible snow showers to 900 metres. Mainly fine elsewhere. Southwesterlies about the tops,light winds at lower levels.

Freezing Level: About 1200 metres.

Saturday:

Mainly fine, but a few showers about the Fiordland. Light winds at low levels, southwesterlies about the tops tending strong westerlies in Fiordland.

Freezing Level: Rising to 2000 metres.


Nelson Lakes National Park

Tomorrow - Wednesday 22 August

Issued at: 1:07pm Tuesday 21 Aug

Showers

Showers easing in the morning then clearing by evening. Snow possible to 800 metres.

Freezing level 1100m

Thursday 23 August

Showers

Occasional rain, especially in the east. Snow possible to 900 metres.

Freezing level 1100m

Friday 24 August

Few showers

Mainly fine, but a few showers or snow showers in the south. Southerlies.

Freezing level  1200 metres.

Saturday 25 August

Fine

Fine. Light southwesterlies.

Freezing level  Rising to 2000 metres.


Canterbury High Country

Tomorrow

Issued at 12:09pm Tuesday 21 Aug

Mainly fine, apart from showers about the Divide which clear by evening. Snow lowering to 700 metres.

Wind at 1000 metres: Westerly 35 km/h but 55 km/h north of Arthur's Pass developing in the morning, then dying out in the evening.

Wind at 2000 metres: Northwest rising to 50 km/h in the morning, then dying out in the evening.

Freezing level: 1300 metres, lowering to 900 metres about the Divide.

Thu Aug 23

Cloud increasing. Occasional rain from afternoon, with snow to 700 metres.

Wind at 1000 metres: Light.

Wind at 2000 metres: Southerly 40 km/h.

Freezing level: Around 1000 metres.

Fri Aug 24

A few showers, possibly falling as snow to 900 metres, gradually clearing from the south. Light winds.

Sat Aug 25

Fine with light winds.


Westland Forecast

Issued at: 3:41pm 21 Aug

WEDNESDAY

22 AUG

Showers becoming isolated in the morning then clearing in the evening. Westerlies dying out in the afternoon.

THURSDAY

23 AUG

Fine with southwesterly breezes.

FRIDAY

24 AUG

Fine with light winds.

SATURDAY

25 AUG

Fine apart from evening cloud. Southwesterlies developing.

SUNDAY

26 AUG

Cloudy periods. Southwesterlies.


Southern Lakes

Tomorrow

Issued at 12:09pm Tuesday 21 Aug

Morning cloud, with isolated showers about the headwaters, then fine. Snow possible to 1000 metres.

Wind at 1000 metres: Westerly 30 km/h dying out in the evening.

Wind at 2000 metres: Westerly 35 km/h dying out in the evening.

Freezing level: Around 1000 metres.

Thu Aug 23

Cloud increasing.

Wind at 1000 metres: Light.

Wind at 2000 metres: Southerly 40 km/h.

Freezing level: About 1100 metres.

Fri Aug 24

Morning cloud and isolated showers, clearing and becoming fine. Southerlies dying out.

Sat Aug 25

Fine with light winds.


Mt Aspiring National Park

Tomorrow - Wednesday 22 August

Issued at: 1:07pm Tuesday 21 Aug

Few showers

A few showers, clearing by evening. Snow down to 600 metres at times.

Freezing level 800m

Thursday 23 August

Partly cloudy

Fine apart from areas of morning cloud in the east.

Freezing level 1100m

Friday 24 August

Partly cloudy

Fine apart from areas of morning cloud. Light winds at low levels, southwesterlies about the tops.

Freezing level  1200 metres.

Saturday 25 August

Fine

Fine. Light winds at low levels, southwesterlies about the tops

Freezing level  Rising to 1700 metres.


Fiordland National Park

Tomorrow - Wednesday 22 August

Issued at: 1:07pm Tuesday 21 Aug

A few showers, but occasional rain about the south coast. Snow to 700 metres at times.

Freezing level 900m

Thursday 23 August

Few showers

Mainly fine in the north. Cloud and showers developing about the Lakes and southern fiords. Snow to 900 metres.

Freezing level 1100m

Friday 24 August

Few showers

Mainly fine, a few showers in the south. Southerlies.

Freezing level  1200 metres.

Saturday 25 August

Few showers

A few showers about the fiords, otherwise fine. Westerlies strengthening.

Freezing level  Rising to 1600 metres.


Southland Forecast

Issued at: 3:41pm 21 Aug

WEDNESDAY

22 AUG

Rain, mainly about the coast and Stewart Island, and cloudy elsewhere. Westerlies, strong about the coast, but strong southeasterlies about Stewart Island.

THURSDAY

23 AUG

Cloudy with occasional showers. Winds mainly light, but southerlies about the coast.

FRIDAY

24 AUG

Showers becoming isolated and fine spells increasing. Southerlies tending westerly.

SATURDAY

25 AUG

Cloudy periods and coastal showers. Westerlies, strong about the coast.

SUNDAY

26 AUG

Mainly fine, but a few showers about the coast. Light winds inland and strong coastal westerlies.


Foveaux

Valid to Midnight Wednesday 22 Aug

Issued at 4:42pm Tuesday 21 Aug

Forecast:

Southwest 15 knots, gradually becoming southeast 25 knots but 15 knots north of Stewart Island this evening. Changing westerly 25 knots in the north Wednesday morning. Sea becoming rough. Southwest swell 2 metres. Southeast swell 3 metres developing. Fair visibility in a few showers.

Three Day Outlook:

Becoming Thursday morning southeast 15 knots everywhere, turning Friday westerly 15 knots, rising Saturday 25 knots. Sea rough at times. Moderate southeast swell,easing Thursday. Southwest swell becoming moderate Saturday.

Our base operators transmit the latest forecast daily at 8.30am and 7.30pm