Severe Weather Warning Get File

Severe Weather Warning

Issued at 9:31am Monday 21 Sep 2020

Heavy rain in the west and gale northwesterlies in the east of central and southern New Zealand

An active front is forecast to move north across southern and central New Zealand during Tuesday and Wednesday, bringing periods of heavy rain to the west and gale to severe gale northwesterlies in the east.

Warnings and watches for heavy rain and severe gale west to northwest winds are now in force for many places.

People are advised to stay up to date with the latest forecasts in case any changes are made.

Heavy Rain Warning - Orange

Heavy rain may cause streams and rivers to rise rapidly. Surface flooding and slips are also possible and driving conditions may be hazardous.

Area: Westland about and south of Otira
Valid: 24 hours from 11:00am Tuesday to 11:00am Wednesday
Forecast: Expect 180 to 240mm of rain to accumulate about the ranges. Expect 70 to 110mm to accumulate near the coast, especially about and south of the Glaciers. Peak intensities of 15 to 25mm/h.

Area: Head waters of Canterbury lakes and rivers south of Arthurs Pass
Valid: 12 hours from 10:00pm Tuesday to 10:00am Wednesday
Forecast: Expect 150 to 200mm to accumulate near the divide and 70 to 100mm within 15km in the east. Peak intensities of 15 to 25mm/h near the divide.

Area: Head waters of Otago lakes and rivers
Valid: 16 hours from 2:00pm Tuesday to 6:00am Wednesday
Forecast: Expect 100 to 150mm to accumulate near the divide and 70 to 110mm within 15km in the east. Peak intensities of 15 to 25mm/h near the divide.

Area: Fiordland north of Breaksea Sound.
Valid: 21 hours from 7:00am Tuesday to 4:00am Wednesday
Forecast: Expect 160 to 200mm to accumulate. Peak intensities of 15 to 25mm/h.

Strong Wind Warning - Orange

Strong wind gusts could damage trees, powerlines and unsecured structures. Driving may be hazardous, especially for high-sided vehicles and motorcycles.

Area: Canterbury High Country
Valid: 15 hours from 6:00pm Tuesday to 9:00am Wednesday
Forecast: Northwest gales are forecast to become severe at times with gusts reaching 120km/h in exposed places.

An update for severe weather will be issued by 9:00pm Monday 21 Sep 2020.

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