Mountain Radio

Latest South Island Weather Forecast

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


Situation Statement

Issued: 11:39am Friday 23 Aug

A broad trough of low pressure moves off most of the country today, finally clearing the upper North Island early tomorrow. A slim ridge of high pressure is spreading over Aotearoa during Saturday.


Short Forecast

Issued: 5:50pm Friday 23 Aug

Valid to: Midnight Saturday 24

Buller, Nelson, Marlborough, Canterbury and Otago apart from Clutha

Scattered showers, mainly about the ranges inland, where some could be heavy with hail. Clearing to fine overnight tonight.

Clutha and Southland

A few showers, retreating to the coast overnight.

Westland and Fiordland

Showers developing in Fiordland tomorrow morning, spreading elsewhere in the afternoon.


Brief Mountain Forecast

Issued at 5:27pm Friday 23 Aug

Valid to Midnight Saturday 24

South Island

Kahurangi National Park to Nelson Lakes National Park:

Mainly fine. A few showers, especially from tomorrow afternoon.

Remaining mountain areas:

Scattered showers, some heavy with hail, possibly thundery, easing tonight and clearing east of the main divide. Snow to about 1000 metres. Winds: Southwesterlies, turning westerly and rising to gale tomorrow.

Freezing Level:

Around 1300 metres, gradually rising to 2000 metres east of the main divide tomorrow.


Extended Mountain Forecast

Issued at: 1:32pm Friday 23 Aug

South Island

Sunday:

Rain becoming heavier in Fiordland. Snow possibly to 1500 metres in the north, sloping to 1000 metres in Fiordland. Dry about the Kaikoura ranges. Gale westerlies,possibly severe gale for a time.

Freezing Level: 2000 metres in the north sloping to 1400 metres in the south.

Monday:

Rain easing to showers, snow possibly lowering to 700 metres in Fiordland. Winds turning gale southwesterly.

Freezing Level: Lowering to 1500 metres in the north, and to 900 metres in the south.

Tuesday:

Becoming mainly fine, although showers persist about the Fiordland. Southwesterlies, strong in the north, turning to gale northwesterlies south of Arthurs Pass.

Freezing Level: 1300 metres in the north sloping to 900 metres in the south.


Nelson Lakes National Park

Tomorrow - Saturday 24 August

Issued at: 12:43pm Friday 23

Windy

Fine at first. Increasing cloud and isolated showers developing in the evening, as southwesterlies rise to gale in exposed places. Sleety showers to 1500 metres.

Freezing level 1400m

06:00   12:00   18:00   00:00

Sunday 25 August

Windy

Occasional rain developing. Snow to 1500 metres. Gale westerlies at times.

Freezing level 1800m

Monday 26 August

Windy

Rain with snow to 1200 metres, easing to showers. Gale northwesterlies changing to strong southwesterlies.

Freezing level  Lowering to 1400 metres.

Tuesday 27 August

Partly cloudy

Partly cloudy. Southwesterlies.

Freezing level  Lowering to 1200 metres.


Canterbury High Country

Tomorrow

Issued at 5:38pm Friday 23 Aug

Becoming fine in the morning. Increasing cloud with scattered rain developing about the Divide in the evening. Snow to 1200 metres.

Wind at 1000 metres: Southwest 40 km/h, turning westerly 50 km/h in the afternoon and rising to gale 70 km/h in exposed places by evening.

Wind at 2000 metres: Southwest 45 km/h, rising to westerly gale 65 km/h in the afternoon and to gale 80 km/h in the evening.

Freezing level: Gradually rising to 1800 metres in the east, but remaining 1400 metres about the Mackenzie District.

Sun Aug 25

Rain about the Divide. High cloud with a few spots of afternoon rain in the east. Snow lowering to 1000 metres about the Divide.

Wind at 1000 metres: Westerly gale 65 km/h, easing to 45 km/h in the morning and to northwest 30 km/h in the evening.

Wind at 2000 metres: Westerly gale 80 km/h, easing to gale 65 km/h in the morning and to 50 km/h for a time in the afternoon.

Freezing level: About 1800 metres in the east, but 1400 metres towards the Mackenzie District.

Mon Aug 26

Rain with snow to 1600 metres, mostly clearing during the day and gale northwesterlies easing. However, rain returning later with a southerly change.

Tue Aug 27

Remaining rain clearing and becoming mainly fine. Southwesterlies tending northwest and strengthening.


Westland Forecast

Issued at: 5:31pm 23 Aug

SATURDAY

24 AUG

A fine morning, then increasing cloud with scattered showers spreading north through the afternoon. Southwesterlies.

SUNDAY

25 AUG

Periods of rain. Winds turning northwesterly.

MONDAY

26 AUG

Rain easing to a few showers, then clearing from the south. Strong southwesterlies easing.

TUESDAY

27 AUG

Remaining showers clearing and becoming fine. However, cloud increasing in the evening. Southwesterlies.

WEDNESDAY

28 AUG

Cloudy periods and showers developing in the south. Light winds.


Southern Lakes

Tomorrow

Issued at 5:38pm Friday 23 Aug

Becoming fine in the morning. Increasing cloud and rain developing about the western headwaters in the evening. Snow to 1100 metres.

Wind at 1000 metres: Turning westerly 45 km/h in the morning, rising to gale 65 km/h in exposed places in the afternoon.

Wind at 2000 metres: Turning westerly gale 65 km/h in the morning, rising to gale 80 km/h by evening.

Freezing level: Rising to 1400 metres.

Sun Aug 25

Cloudy, with rain in the west, and scattered rain developing elsewhere morning and afternoon. Snow to 1100 metres.

Wind at 1000 metres: Westerly gale 65 km/h in exposed places, easing to 50 km/h in the morning and to northwest 35 km/h in the afternoon.

Wind at 2000 metres: Westerly gale 80 km/h, easing to gale 65 km/h in the morning and to 50 km/h in the afternoon.

Freezing level: About 1400 metres.

Mon Aug 26

Rain with snow to 1100 metres, easing to a few showers in the morning and clearing later. Strong northwesterlies turning southwesterly.

Tue Aug 27

Fine apart from areas of morning cloud. Winds turning northwesterly and strengthening.


Mt Aspiring National Park

Tomorrow - Saturday 24 August

Issued at: 10:19am Friday 23

Windy

Fine at first, then increasing cloud with rain developing by late afternoon. Snow to 1000 metres. Westerlies rising to gale, severe about the tops.

Freezing level 1400m

Sunday 25 August

Windy

Rain becoming heavier, with snow to 1000 metres. Gale northwesterlies, severe about the tops, easing.

Freezing level 1400m

Monday 26 August 2019

Few showers

Heavy rain with snow to 1200 metres, easing early to showers and clearing later. Northwesterlies changing to gale southwesterlies, then easing.

Freezing level  Lowering to 1000 metres.

Tuesday 27 August

Partly cloudy

Cloud increasing, showers developing late. Southwesterlies tending northwest and becoming strong.

Freezing level  About 1000 metres.


Fiordland National Park

Tomorrow - Saturday 24 August

Issued at: 10:19am Friday 23

Windy

Rain developing from morning, or snow to 1000 metres. Westerlies rising to gale.

Freezing level 1200m

Sunday 25 August

Windy

Rain becoming heavier, with snow to 1000 metres. Gale westerlies.

Freezing level 1500m

Monday 26 August

Few showers

Rain with snow possibly lowering to 700 metres, easing to showers and clearing north of the lakes. Northwesterlies changing to strong southwesterlies.

Freezing level  Lowering to 900 metres.

Tuesday 27 August

Showers

Showers. Westerlies rising to gale.

Freezing level  About 1000 metres.


Southland Forecast

Issued at: 5:31pm 23 Aug

SATURDAY

24 AUG

Mainly fine for most. Cloudy with showers about the south coast, becoming confined to Stewart Island by afternoon. Westerlies, becoming strong in the south.

SUNDAY

25 AUG

A period of rain in the morning, becoming scattered and then clearing about the Mainland by evening. A morning southwest change, then gradually turning northeasterly.

MONDAY

26 AUG

Rain easing to showers and gradually clearing inland. Winds changing southerly then tending westerly.

TUESDAY

27 AUG

Mainly fine inland. Showers about the coast, gradually clearing. Westerlies, strong about the coast.

WEDNESDAY

28 AUG

Fine with increasing high cloud. However, showers about the Stewart Island. Northwesterlies.


Foveaux

Valid to Midnight Saturday 24

Issued at 4:42pm Friday 23 Aug

Forecast:

Southerly 10 knots rising to southwest 20 knots this evening, turning northwest 25 knots overnight tonight and rising to westerly 35 knots Saturday morning. Sea becoming very rough.Southwest swell rising to 4 metres. Fair visibility in showers.

Three Day Outlook:

Easing Sunday morning variable 10 knots, becoming late Sunday northerly 15 knots,then changing early Monday southwest 20 knots and becoming Tuesday westerly 30 knots with rough sea. Heavy southwest swell easing Sunday.

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