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: 11:28am Wednesday 15 Aug

A low is moving away to the east of the North Island today, followed by a narrow ridge. A front is expected to move onto Fiordland overnight tonight, from the Tasman Sea.


Short Forecast

Issued: 1:23pm Wednesday 15 Aug

Valid to: Midnight Thursday 16 Aug

Nelson, Buller, Westland, Fiordland

Fine today, but showers developing south of Hokitika tonight. Showers turning to rain and spreading north tomorrow, heavy at times with possible thunderstorms.

Canterbury, Otago, Southland

Fine today. High cloud tomorrow, with a few spots of rain.


Extended Brief Forecast

Issued: 10:58am Wednesday 15 Aug

Friday

South Island, showers in the west becoming confined to Buller. Showers and cold southerlies spreading up eastern areas.

Saturday

South Island, showers in the east from Ashburton northwards clearing during the morning, mainly fine elsewhere.

Sunday

South Island, cloud increasing,late rain about Fiordland.


Brief Mountain Forecast

Issued at 12:26pm Wednesday 15 Aug

Valid to Midnight Thursday 16 Aug

South Island

North of Mt Aspiring:

Fine today. Periods of rain tomorrow, with heavy falls, possible thunderstorms, and snow lowering to 1500 metres.

Mt Aspiring and Fiordland:

A few showers, turning to rain tonight with heavy falls and possible thunderstorms tomorrow. Snow lowering to 900 metres tomorrow.

WINDS: Southwesterlies north of Arthur s Pass. Northwesterlies elsewhere, rising to gale south of Mt Cook tonight. Becoming northwest everywhere tomorrow, with severe gales for a time.

Freezing Level: About 1500 metres, rising to about 2000 metres this afternoon. lowering to 1200 metres in fiordland tomorrow night.


Extended Mountain Forecast

Issued at: 12:34pm Wednesday 15 Aug

South Island

Friday:

Showers, with snow lowering to about 900 metres, clearing south of Mt Cook.Fresh or strong westerlies turning southerly.

Freezing Level: Lowering to 1200 metres, but 900 metres in the south.

Saturday:

Remaining showers in the east north of Mt Cook clearing during the morning with southerlies dying away. Fine elsewhere with light winds.

Freezing Level: Rising to 1400 metres.

Sunday:

High cloud increasing, late rain about Fiordland. Northerlies developing, rising to gale in exposed places south of Mt Aspiring.

Freezing Level: Rising to 1600 metres.


Nelson Lakes National Park

Tomorrow - Thursday 16 August

Issued at: 1:41pm Wednesday 15 Aug

Windy

Scattered rain developing in the morning, widespread from afternoon with heavy falls possible. Snow lowers to 1500 metres. Northwest rises to gale in the morning, easing overnight.

Freezing level 1900m

Friday 17 August

Showers

Showers easing evening, with snow lowering to 1100 metres.

Freezing level 1400m

Saturday 18 August

Partly cloudy

Morning cloud in the east, otherwise fine. Southerlies dying away.

Freezing level  About 1400 metres.

Sunday 19 August

Partly cloudy

Cloud increasing and northerlies slowly strengthening.

Freezing level  About 1600 metres.


Canterbury High Country

Tomorrow

Issued at 12:17pm Wednesday 15 Aug

About the divide, rain developing early with some heavy falls and possible thunderstorms. Elsewhere, partly cloudy with a few spots of rain. Snow lowering to 1200 metres about the divide.

Wind at 1000 metres: Northwest 50 km/h, rising to gale 65 km/h early morning, then easing to 50 km/h in the south in the evening.

Wind at 2000 metres: Northwest rising to severe gales 100 km/h early morning, then easing to gale 65 km/h in the afternoon.

Freezing level: 1800 metres about the divide but 2600 metres in the east, gradually lowering to about 1700 metres everywhere.

Fri Aug 17

About the Divide, periods of rain. Elsewhere, mainly fine at first, but scattered rain spreading north from afternoon. Snow lowering to 900 metres in the south.

Wind at 1000 metres: Winds becoming light in the morning, southerly 30 km/h developing in the afternoon.

Wind at 2000 metres: Westerly easing to 40 km/h in the morning then changing southerly 40 km/h in the afternoon.

Freezing level: About 1700 metres, lowering to 1000 metres but 1200 metres in the north during the afternoon and evening.

Sat Aug 18

Cloudy at first with scattered showers north of Mt Cook, falling as snow above 1000 metres, clearing during the morning, then becoming fine. Southerlies dying away.

Sun Aug 19

Increasing high cloud. Northerlies gradually strengthening.


Westland Forecast

Issued at: 12:15pm 15 Aug

THURSDAY

16 AUG

Rain setting in, with some heavy falls and possible thunderstorms from late morning. Rain easing in the evening. Northerlies developing early, dying out in the evening.

FRIDAY

17 AUG

Showers, clearing in the south in the evening then elsewhere overnight. Light winds.

SATURDAY

18 AUG

Fine with light winds.

SUNDAY

19 AUG

Becoming cloudy. Northeasterlies developing.

MONDAY

20 AUG

Widespread rain, briefly heavy, followed by showers. Northeasterlies, strong for a time.


Southern Lakes

Tomorrow

Issued at 12:17pm Wednesday 15 Aug

Rain developing early, with heavy falls and possible thunderstorms about the headwaters. Rain easing, and eventually clearing in the east during the afternoon and evening. Snow falling to 1200 metres about the headwaters.

Wind at 1000 metres: Northwest gale 65 km/h, easing to 40 km/h by afternoon and dying out in the evening.

Wind at 2000 metres: Northwest severe gale 100 km/h, easing to gale 70 km/h by afternoon and to 45 km/h by evening.

Freezing level: Lowering 1700 metres everywhere in the morning then to 1400 metres in the evening.

Fri Aug 17

Occasional rain, persistent during the afternoon. Snow lowering to 700 metres.

Wind at 1000 metres: Light, southerly 30 km/h developing about midday.

Wind at 2000 metres: Northwest 30 km/h changing southerly 40 km/h in the afternoon

Freezing level: 1400 metres lowering to 900 metres from late morning.

Sat Aug 18

Morning cloud, then fine. Light winds.

Sun Aug 19

Increasing high cloud. Northeasterlies strengthening, rising to gale about the tops.


Mt Aspiring National Park

Tomorrow - Thursday 16 August

Issued at: 1:41pm Wednesday 15 Aug

Windy

Rain, with some heavy falls and possible thunderstorms with hail, easing in the evening. Snow lowering to 1100 metres. Severe northwest gales, easing in the afternoon.

Freezing level 1500m

Friday 17 August

Showers

Periods of rain, with possibly heavy falls, easing in the afternoon. Snow lowering to 800 metres.

Freezing level 1200m

Saturday 18 August

Partly cloudy

Morning cloud in the east, otherwise fine. Light winds.

Freezing level  About 1400 metres.

Sunday 19 August

Windy

Becoming cloudy. Northeasterlies strengthening, rising to gale about higher ground.

Freezing level  About 1600 metres.


Fiordland National Park

Tomorrow - Thursday 16 August

Issued at: 1:41pm Wednesday 15 Aug

Windy

Rain, with some heavy falls and possible thunderstorms with hail, easing evening. Snow lowers to 1000 metres. Severe northwest gales, gradually easing in the morning and afternoon.

Freezing level 1500m

Friday 17 August

Windy

Showers, with heavy falls possible in the morning, easing and becoming confined to the east in the afternoon. Snow above 700 metres.

Freezing level 900m

Saturday 18 August

Partly cloudy

Mainly fine. Northerlies developing.

Freezing level  About 1300 metres.

Sunday 19 August

Windy

Becoming cloudy, late rain or drizzle. Northeasterlies strengthening, rising to gale in exposed places.

Freezing level  About 1500 metres.


Southland Forecast

Issued at: 12:15pm 15 Aug

THURSDAY

16 AUG

Cloudy periods. Patchy rain retreating to the coast and Stewart Island around midday. Northwesterlies, strong about Stewart Island, easing in the afternoon.

FRIDAY

17 AUG

Rain and southerlies developing in the morning. Rain becoming scattered during the afternoon as wind die out.

SATURDAY

18 AUG

Early cloud, then fine. Light winds.

SUNDAY

19 AUG

Increasing high cloud. Northeasterlies developing.

MONDAY

20 AUG

Brief rain. Northeasterlies.


Foveaux

Valid to Midnight Thursday 16 Aug

Issued at 4:42pm Wednesday 15 Aug

Forecast:

Northerly 15 knots, rising to 25 knots this evening, then easing to northwest 15 knots Thursday evening. Sea becoming rough for a time. Southwest swell rising to 2 metres. Northeast swell offshore, 1 metre. Fair visibility in showers developing Thursday morning.

Three Day Outlook:

Becoming Friday morning variable 10 knots. Developing early Saturday northwest 20 knots, turning Sunday northeast 20 knots. Moderate southwest swell dying out Sunday. Northeast swell becoming moderate Sunday.

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