Mountain Radio

Latest South Island Weather Forecast

This forecast was transmitted by ZKIB BASE this morning on our 8.30am voice call to all of our field sets located in the South Island an Stewart Island.


Situation Statement

Issued: 12:28am Sunday

A low pressure system remains slow moving over central New Zealand while associated features move across both islands.


Short Forecast

Issued: 3:30am Sunday

Valid to: Midnight Sunday

Horowhenua to Wellington, also Wairarapa, Nelson and Marlborough

Occasional rain, with some heavy and possibly thundery falls about Kapiti and northern Wellington.

Buller to Fiordland

Periods of rain, with heavy falls and possible squally thunderstorms, clearing about the fiords this morning.

Canterbury

Mainly fine at first apart from rain near the Alps. Becoming cloudy from afternoon and occasional showers developing.

Otago and Southland

Occasional showers, some heavy with hail in the south, and snow lowering to 600 metres this morning.


Extended Brief Forecast

Issued: 11:26pm Saturday

Monday

South Island, scattered rain or showers in the north, becoming fine in the west and south, rain with snow to 500 metres in Canterbury.

Tuesday

South Island, cloud increasing and isolated showers developing in the west, remaining showers in the north and Canterbury clearing, otherwise fine.

Wednesday

South Island, showers turning to rain in the west, heavy falls possible in Fiordland, elsewhere, mainly fine.


Brief Mountain Forecast

Issued at 3:54am Sunday

Valid to Midnight Sunday

South Island

Kaikoura ranges:

Occasional rain with snow above 1400 metres, easing this evening.

Kahurangi and Nelson Lakes National Parks, also the Southern Alps:

Periods of rain, with some heavy and possibly thundery falls until evening. Snow above 1200 metres, lowering to 800 metres about the Alps late evening.

Fiordland:

Rain clearing this morning then mainly fine, apart from snow showers about southern and eastern areas.

WINDS: Westerly gales, severe in exposed places at first, easing during the morning and afternoon, then southerlies developing.

Freezing Level: 2000 metres sloping to 1200 metres in the far south, lowering to 1500 metres but 800 metres in the south this evening.


Extended Mountain Forecast

Issued at: 4:13am Sunday

South Island

Monday:

Rain north of Mt Cook, with snow to 500 metres, gradually clearing. Becoming fine further south. Southeasterlies dying out.

Freezing Level: About 1200 metres in the north, sloping to 800 metres in the south.

Tuesday:

Cloudy periods and a few showers, mainly in the west. Northwesterlies developing.

Freezing Level: 1000m in the south, sloping to 1400 metres in the north.

Wednesday:

Showers turning to rain. Dry about the Kaikoura ranges. Northwesterlies rising to severe gale.

Freezing Level: Rising to 1600 metres, but to 2000 metres in fiordland.


Nelson Lakes National Park

Today - Sunday 13 August

Issued at: 8:08pm Saturday

Rain, with some heavy falls, and snow down to about 1000 metres, easing from evening. Gale westerlies, possibly severe at first, easing in the afternoon.

Freezing level 1400m

Tomorrow - Monday

A few showers, more frequent for a time in the afternoon. Snow lowering to 800 metres at first.

Freezing level. 1200m

Tuesday

A few showers, clearing. Westerlies developing.

Wednesday

Cloud increasing. Northwesterlies gradually rising to gale.

Freezing level  Rising to 1600 metres.

Thursday

Rain, possibly heavy, easing later. Severe gale northwesterlies, easing to strong westerlies.

Freezing level  Rising to 2000 metres.


Canterbury High Country

Today

Issued at 10:59pm Saturday

Rain, with heavy and possibly thundery falls about the divide easing in the morning and clearing for a time in the afternoon. Elsewhere, cloudy periods with a few early showers and scattered evening rain. Snow lowering to about 700 metres overnight.

Wind at 1000 metres: Northwest severe gale 90 km/h easing to 50 km/h in the morning, then dying out afternoon.

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

Freezing level: About 1400 metres lowering to 1100 metres at night.

Tomorrow

Rain, with snow falling to 500 metres, gradually easing.

Wind at 1000 metres: Southeast 30 km/h dying out.

Wind at 2000 metres: Southeast 40 km/h dying out.

Freezing level: Lowering to 800 metres.

Tue Aug 15

Any remaining showers clearing early and becoming fine. Northwesterlies developing.

Wed Aug 16

Fine, with increasing high cloud. Northwesterlies rising to gale or severe gale.

Thu Aug 17

Scattered rain for a time. Northwesterlies, gale in exposed places, possibly severe gale at first.


Westland Forecast

Issued at: 3:26am 13 Aug

SUNDAY

Periods of rain, with heavy and possibly thundery falls, easing south of Harihari late morning, then everywhere in the evening. Fresh northwesterlies, easing in the morning then gradually turning southeast.

MONDAY

Partly cloudy, with isolated showers in the north. Southeasterlies dying out in the evening.

TUESDAY

Cloud increasing and isolated showers developing. Light winds.

WEDNESDAY

Showers turning to rain, with heavy falls in the south later. Northeasterlies becoming strong, possibly gale in the south.

THURSDAY

Rain, possibly heavy at first, easing to showers. Winds change westerly.

FRIDAY

Rain. Not much wind.


Southern Lakes

Today

Issued at 10:59pm Saturday

Scattered rain, some heavy falls about the headwaters at first, clearing in the morning to cloudy periods. However, showers returning in the evening and snow lowering to about 700 metres.

Wind at 1000 metres: Northwest 55 km/h dying out in the morning.

Wind at 2000 metres: Northwest severe gale 90 km/h easing to 50 km/h in the morning, then gradually easing and turning southeast 30 km/h in the evening.

Freezing level: 1400 metres lowering to 1000 metres at night.

Tomorrow

Isolated showers clearing early and fine spells developing.

Wind at 1000 metres: Light.

Wind at 2000 metres: Light.

Freezing level: About 800 metres.

Tue Aug 15

Fine, increasing high cloud. Northwesterlies developing.

Wed Aug 16

Cloud spreading from the west with late scattered rain, falling as snow to 1500 metres. Northwesterlies rising to gale or severe gale.

Thu Aug 17

Heavy rain about the headwaters easing to showers. Scattered falls further east clearing. Snow falling to 1400 metres. Gale westerlies.


Mt Aspiring National Park

Today - Sunday 13 August

Issued at: 8:08pm Saturday

Rain with heavy and thundery falls and snow down to 700 metres at first, easing and becoming confined to the east in the afternoon. Gale northwesterlies, easing in the morning.

Freezing level 1300m

Tomorrow - Monday

Cloud and a few showers in the east, clearing to long fine spells everywhere by afternoon. Snow flurries to about 800 metres at first.

Freezing level 800m

Tuesday

A few showers developing. Northwesterlies developing.

Wednesday

Showers turning to rain later, falling as snow to 1300 metres. Northwesterlies rising to gale or severe gale.

Freezing level  Rising to 1600 metres.

Thursday

Rain, possibly heavy, easing later. Gale or severe gale northwesterlies.

Freezing level  1600 metres.


Fiordland National Park

Today - Sunday 13 August

Issued at: 8:08pm Saturday

Rain with some heavy/thundery falls at first, easing to showers and becoming confined to south coast in the morning. Snow to 700 metres at times. Gale westerlies, easing morning.

Freezing level 1100m

Tomorrow - Monday

Cloud and isolated showers clearing to fine spells in the morning. Snow flurries to 600 metres at first.

Freezing level 1200m

Tuesday

A few showers about the fiords, mainly fine further east. Northwesterlies developing.

Wednesday

Showers turning to rain later, falling as snow to 1300 metres. Northwesterlies rising to gale or severe gale.

Freezing level  Rising to 2000 metres.

Thursday

Rain, possibly heavy, easing later. Gale or severe gale northwesterlies.

Freezing level  Lowering to 1600 metres.


Southlan Forecast

Issued at: 3:26am 13 Aug

SUNDAY

Showers about the coast, with small hail possible at first and falling as snow to 600 metres, spreading inland from midday. Westerlies turning southerly about midday.

MONDAY

Showers, falling as snow to 600 metres at first, clearing during the morning and fine spells developing. Southeasterlies dying out in the afternoon.

TUESDAY

Fine with light winds.

WEDNESDAY

Increasing high cloud, late scattered rain. Northerlies becoming strong in exposed place

THURSDAY

Scattered rain clearing. Strong northerlies, easing.

FRIDAY

Rain. Little wind.


Foveaux

Valid to Midnight Sunday

Issued at 6:30am Sunday

Forecast:

Westerly 25 knots changing southerly 25 knots this morning, then easing to southeast 15 knots this afternoon. Rough sea, easing. Westerly swell 2 metres. Northeast swell 1 metre. Poor visibility in showers, with thunderstorms possible this morning, clearing this afternoon.

Three Day Outlook:

Tending Monday evening northeast 15 knots, and rising Wednesday 25 knots with rough sea. Moderate southwest swell easing Tuesday.

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