10 Day Forecast

Canterbury High Country Regional Forecast

Tuesday 13 APRIL

thunderstorms

Rain & heavy showers about the Main Divide/Headwaters; some thundery falls in the mix, with high intensity rainfall (20mm/hr) gradually easing back & clearing in the evening. Snow showers to around 1500m. Scattered rain and showers developing through the Interior and about the eastern ranges and hills during the morning, easing and clearing late afternoon/evening. Snow to around 1600m about the eastern ranges briefly. Strong to gale force nor-west winds, changing colder west/south-westerly in the evening in the south and further north at night.

Wind at 1000 Metres

hc-wind
60-80km/hr nor-westerlies, easing back to around 30km/hr by evening.

Wind at 2000 Metres

hc-wind
90-110km/hr nor-westerlies, easing back to around 60km/hr by evening.

Free Air Freezing Level

hc-freezing
Lowering to around 1600m about the Main Divide and 2000m in the east.

Key Considerations & Hazard Advice

Key Considerations and Hazard Advice

High river & stream levels about the Main Divide/Headwaters. Avoid the Mt Cook & Arthur's Pass National Park. Gale nor-west winds - widespread early on, then colder air, with lowering snow and freezing levels about the Main Divide/Headwaters. Snow will be fairly widespread this afternoon about the higher ranges. CWU warning in place for the Main Divide/Headwaters.

Updated: 8:18 am Tue, 13 Apr 21

Wednesday 14 APRIL

partly-sunny

A fine day. Any early cloud clearing to bright and sunny condition, with occasional cloudy periods. Cooler south-westerly airflow eases, with nor-westerlies developing across the region at night at higher elevations.

Wind at 1000 Metres

hc-wind
20-30km/hr nor-westerlies at night.

Wind at 2000 Metres

hc-wind
40-60km/hr nor-westerlies at night.

Free Air Freezing Level

hc-freezing
2500m, rising to 3200m at night.

Key Considerations & Hazard Advice

Key Considerations and Hazard Advice

A calmer period; small 'window' of finer weather.

Updated: 8:18 am Tue, 13 Apr 21

Thursday 15 APRIL

wind

Rain develops about the Main Divide/Headwaters; possible heavy falls possible; easing in the evening. Snow about the Mt Cook National Park above 2000m. Mainly fine in the east, with high cloud. Strong to gale force nor-westerly gales - widespread.

Wind at 1000 Metres

hc-wind
60-80km/hr nor-westerlies.

Wind at 2000 Metres

hc-wind
70-110km nor-westerlies.

Free Air Freezing Level

hc-freezing
Freezing Level: 3000m in the east, lowering to 2700m in the west.

Key Considerations & Hazard Advice

Key Considerations and Hazard Advice

Nor-west gales. High river levels about Arthur's Pass & Mt Cook National Park.

Updated: 8:18 am Tue, 13 Apr 21

Friday 16 APRIL

wind

Heavy rain, with thundery falls about the Main Divide & Canterbury Headwaters, significant totals possible. Snow at higher elevations above 1700m about the Main Divide & Canterbury Headwaters. Spill over falls reaching the foothills, with snow above 2000m in the east. Gale nor-westerlies, severe at higher elevations, turning southerly at night, with showers and snow to 1500m about the eastern ranges.

Wind at 1000 Metres

hc-wind
60-90km/hr nor-west, changing colder southerly in the evening.

Wind at 2000 Metres

hc-wind
90-120km/hr nor-west, changing colder southerly in the evening.

Free Air Freezing Level

hc-freezing
2500m, lowering at night to 1700m.

Key Considerations & Hazard Advice

Key Considerations and Hazard Advice

High river levels, with heavy falls through the week about the Main Divide/Headwaters. Severe and widespread nor-west gales. Lowering snow levels at night.

Updated: 8:18 am Tue, 13 Apr 21

Saturday 17 APRIL

sunny-showers

A mostly fine day. Early showers, falling as snow above 1500m about the eastern ranges north of Mt Hutt, clearing by mid-morning. A brighter afternoon and evening in the east. South-west flow eases early, turning nor-west during the afternoon.

Wind at 1000 Metres

hc-wind
Early SW winds ease. Nor-westerlies building through the afternoon 60-80km/hr+ at night.

Wind at 2000 Metres

hc-wind
Early SW winds ease. Nor-westerlies building through the afternoon 90-130km/hr+ at night.

Free Air Freezing Level

hc-freezing
Rising to around 2900m across the region.

Key Considerations & Hazard Advice

Key Considerations and Hazard Advice

Early showers about the eastern hills and ranges north of Mt Hutt, quickly clearing. Brief fine period of weather, before nor-westerlies develop yet again.

Updated: 8:18 am Tue, 13 Apr 21

All days (1-10) are moderated and produced by the Canterbury Weather Updates forecast team. We also have a range of high-country towns and villages, with more specific information.

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